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Drilling machine | Interview viva ,oral Question and Answers  1. What is drilling machine?  It is the one of the machine tools used in work...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/drilling-machine-interview-question-and-answers/" aria-label="View Post: Drilling machine | Interview Question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Drilling machine | Interview Question and Answers","url":"\/\/www.gunkrazy.com\/drilling-machine-interview-question-and-answers\/","articleBody":"Drilling machine | Interview Question and Answers\r\nDrilling machine | Interview viva ,oral Question and Answers\r\n\r\n1. What is drilling machine?\r\n\r\nIt is the one of the machine tools used in work shops. It is used to produce hole on the surface of\r\nthe work piece and the hole may be drilled quickly and accurately.\r\n\r\n2. List the types of drilling machines.\r\n\r\n1. Portable drilling machine\r\n2. Sensitive drilling machine\r\n3. Upright drilling machine\r\n4. Radial drilling machine\r\n5. Gang drilling machine\r\n6. Multiple spindle drilling machine\r\n7. Automatic drilling machine\r\n8. Deep hole drilling machine\r\n\r\nRead more ;\u00a0Classification\/Types Of Drilling Machine use In Mechanical Workshop\r\n\r\n3. List the types of Sensitive drilling machine.\r\n\r\n1. Bench mounting 2. Flour mounting.\r\n\r\n4. List the types of Upright drilling machine\r\n\r\n1. Round column 2. Box column\r\n\r\n5. List the types of Radial drilling machine.\r\n\r\n1. Plain 2. Semiuniversal 3. Universal.\r\n\r\n6. List the types of Deep hole drilling machine.\r\n\r\n1. Vertical. 2. Horizontal \r\n\r\n7. What is sensitive drilling machine?\r\n\r\nIt is a small machine designed for drilling a small holes at high speed in light jobs. The feed should be manual .It is used to produce the up to 1.5 to 15mm.\r\n\r\n8. What are the different adjustments made in Round column drilling machine?\r\n\r\n1. Arm and table moves up and down to accommodate the work piece.\r\n2. Arm and table may be moved in an arc up to 180 around the column\r\n3. The table may be rotated 360 about its own axis.\r\n\r\n9. What is the use of deep hole drilling machines?\r\n\r\nIt is used to produce deep holes in rifle barrels, cranks shaft, long shafts.\r\n\r\n10. List the part involved in the up right drilling machine.\r\n\r\n1. Base 2. Column 3. Table 4. Head 5. Spindle, quill and drill head assembly.\r\n\r\n11. List the part involved in the radial drilling machine.\r\n\r\n1. Base 2. Column 3. Radial arm 4. Drill head\r\n\r\n12. What are the work holding devices used in drilling machine?\r\n\r\n1. T bolt and clamp , 2. Step block, 3. Angle plate, 4. Drill jig.\r\n\r\n13. What are the different operations performed in drilling machine?\r\n\r\n1.Driling 2. Reaming 3.Boring 4. Counter boring 5. Counter sinking 6. Spot facing 7. Tapping 8. Lapping 9.Grinding.\r\n\r\nRead more :\u00a0Basic and related Drilling machine Operations\r\n\r\n14. What is reaming?\r\n\r\nIt is the secondary operation after the drilling operation has been performed to produce the occurate hole or finish the hole.\r\n\r\n15. What is boring?\r\n\r\nIt is used to enlarge the hole by means of adjustable cutting tool with only one cutting edge.\r\n\r\n16. What is counter boring?\r\n\r\nIt is used to enlarge the end of the hole cylindrically and the enlarge hole forms the square shoulders with original hole.\r\n\r\n17. What is tapping?\r\n\r\nIt is the operation to produce internal threads by using tap tool.\r\n\r\n18. List the types of drill.\r\n\r\n1. Flat or spade drill, 2. Straight fluted drill, 3. Two lip twist drill,4. Centre drill.\r\n\r\nRead more\u00a0 Types of Drilling tools -LearnMech\r\n\r\n19. What is heel?\r\n\r\nThe edge is formed by the intersection of the flute surface and body clearance.\r\n\r\ndrill bit nomenclature\r\n\r\n20. What is lip?\r\n\r\nThe edge formed by the intersection of the flank and face.\r\n\r\n21. What is face in drill bit?\r\n\r\nThe portion of the flute surface adjacent to the lip on which chip impinges as it cut from the work.\r\n\r\n22. What s chisel edge angle?\r\n\r\nThe angle included between the chisel edge and the lip as viewed from the end of the drill.\r\n\r\n23. What is rake or helix angle?\r\n\r\nThe angle is held between leading edge of the land to the drill axis.\r\n\r\n24. What is circular land?\r\n\r\nThe cylindrically ground surface adjacent to the cutting edge,on the leading edge of the land.\r\n\r\n25. What is the advantage of flute?\r\n\r\nThe flute is the helical groove. It is used to remove the chip through the helical groove and the cutting fluid will enter through the flute surface.\r\n\r\nRead More :\u00a0Nomenclature and Basic Parts Of Drilling tool (Twist bit)\r\n\r\n26. What is primary clearance?\r\n\r\nThe portion of the land removed to provide clearance immediately behind the cutting edge.\r\n\r\n27. What is secondary clearance?\r\n\r\nThe portion of the land removed to provide clearance behind the primary clearance or circular land.\r\n\r\n\r\n\r\nMore Resources \/articles\r\nTechnical Mechanical Interview Question and Answers\r\nMachine Tool Articles , notes , Interview Que &amp; Ans\r\nManufacturing Technology Notes , Articles\r\nLatest seminar topic index - Report ,PPT Download\r\nMechanical Subjectwise Basic Concept Notes ,Articles\r\n\r\n\r\n\r\n&nbsp;","headline":"Drilling machine | Interview Question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-05-10","mainEntityOfPage":"False","dateModified":"February 19, 2020","image":{"@type":"ImageObject","url":"","height":0,"width":0},"publisher":{"@context":"http:\/\/schema.org\/","@type":"Organization","name":"Learn Mechanical Engineering","logo":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2020\/01\/learn-mech-logo-1-300x300.png","height":600,"width":60}}}</script> <article class="article-card horizontal no-thumb"><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/shaper-planer-slotter-machine-interview-question-and-answers/">Shaper , Planer , Slotter machine | Interview Question and Answers</a></p></header><div class="excerpt"><p>Shaper , Planer , Slotter machine | Interview Question and Answers
Shaper , Planer , Slotter machine | Interview , viva , Oral  Question and Answers  Shaper Machine Interview Question and...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/shaper-planer-slotter-machine-interview-question-and-answers/" aria-label="View Post: Shaper , Planer , Slotter machine | Interview Question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Shaper , Planer , Slotter machine | Interview Question and Answers","url":"\/\/www.gunkrazy.com\/shaper-planer-slotter-machine-interview-question-and-answers\/","articleBody":"Shaper , Planer , Slotter machine | Interview Question and Answers\r\nShaper , Planer , Slotter machine | Interview , viva , Oral\u00a0 Question and Answers\r\n\r\n\r\n\r\nShaper Machine Interview Question and Answers\u00a0\r\n\r\n1. What is shaper?\r\n\r\nThe shaper is a reciprocating type of machine tool intended to produce flat surface. These surfaces may be horizontal, vertical or inclined.\r\n\r\nRead more ;\u00a0Types Of Shaping machine | Classification Of Shaper\r\n\r\n2. Classify the shaper according to the reciprocating of ram.\r\n\r\ni. Crank type, ii. Hydraulic type, iii. Geared type.\r\n\r\n3. Classify the shaper according to the travel and position of the ram\r\n\r\na. Horizontal type, b. Vertical type, c. Traveling head type.\r\n\r\n4. Classify the shaper according to the design of table\r\n\r\na. Standard type, b. Universal type.\r\n\r\n5. Classify the shaper according to the type of cutting stroke\r\n\r\na. Push type, b. Draw type\r\n\r\n6. List the different types of parts involved in the shaper\r\n\r\na. Base, b. Column, c. Cross rail, d. Saddle, e. Table, f. Ram, h. Tool head.\r\n\r\n7. List the parts in tool head .\r\n\r\na. Swivel base, b. Vertical slide , c. Apron, d. Tool post\r\n\r\n8. List the parts in apron.\r\n\r\na. Clapper box, b. Clapper block, c. Tool post\r\n\r\n9. What are the different types of mechanism used in shaper?\r\n\r\na. Crank and slotted Mechanism\r\nb. Whit worth mechanism\r\nc. Hydraulic shaper mechanism\r\n\r\n10. List the two block used in the Crank and slotted Mechanism.\r\n\r\na. Bull gear sliding block, b. Rocker arm sliding block.\r\n\r\n11. What is Crank and slotted Mechanism?\r\n\r\nThe rotary motion of the bull gear is transmitted in to reciprocating motion of the ram through the rocker arm.\r\n\r\nRead more ;\u00a0Withworth Quick Return mechanism Operated Conveyor- Mechanical Project\r\n\r\n12. What are the different types of adjustment made in the Crank and slotted Mechanism?\r\n\r\na. Adjusting the length of stroke.\r\nb. Adjusting the position of the stroke.\r\n\r\n 13. What is the use of shaper dog in hydraulic shaper mechanism?\r\n\r\nIt is used to change the position of the flow to facilitate the reciprocating motion.\r\n\r\n14. What are the advantages of hydraulic shaper mechanism?\r\n\r\na. The cutting and return speed are partially constant through out the stroke.\r\nb. Infinite number of cutting may be obtained from zero to maximum value and control easier.\r\n\r\n15. What are the work holding devices used in shaper.\r\n\r\n1. Clamping the vise\r\n2. Clamping on the table\r\n3. Clamped to the angular plate.\r\n\r\n16. What are the devices used to hold the work in to the table?\r\n\r\na. T bolt and clamps\r\nb. Stop pins\r\nc. Strip and stop pins\r\n\r\nRead more :\u00a0Shaper tools | Types of Shaper Tools , Classification Of Shaper Tools\r\n\r\n17. What are the different operations performed by using shaper?\r\n\r\n1. Horizontal surface , 2. Vertical surface 3. Angular surface , 4. Cutting slot and key ways 5. Irregular surface\r\n\r\n\r\n\r\nPlaner Machine Interview Question and Answers\u00a0\r\n\r\n18. What is planer?\r\n\r\nThe planer like a shaper is a machine tool primarily intended to produce plane and flat surfaces by a single point cutting tools. it is used to machining a large work piece which cannot accommodate by shaper table.\r\n\r\nRead more ;\u00a0Types Of Planer machine -Classification Of Planer Machine\r\n\r\n19. What is the difference between shaper and planer?\r\n\r\nThe fundamental difference between shaper and planer is that in a planer the work which is supported on the table reciprocate and the cross wise and perpendicular movement of the tool but shaper the tool reciprocate cross wise and vertical movement of the table.\r\n\r\n20. What are the types of planer?\r\n\r\na. Double housing planer\r\nb. Open side planer\r\nc. Pit planer\r\nd. Edge or plate planer\r\ne. Divided table planer\r\n\r\n21. What is open side planer?\r\n\r\nThe open side planer is having housing at one side which is used to accommodate large work pieces\r\n\r\n22. What is the main intention for plate planer?\r\n\r\nIt is used to squaring and beveling the edges of steel plates used for different pressure vessels.\r\n\r\n23. What is divided table planer?\r\n\r\nThis type of planer has two tables on the bed which may be reciprocated separately or together. It is used to reduce the time for setting the work pieces in the table.\r\n\r\n24. What are the parts involved in the planer?\r\n\r\na. Bed b. table c. Tool head d. Cross rail e. Housing or column. F. Driving and feed mechanism.\r\n\r\n25. What are the parts involved in tool head?\r\n\r\n1. Saddle\r\n2. Swivel base\r\n3. Apron\r\n4. Clapper box\r\n5. Clapper block\r\n\r\n26. List the mechanism involved in the planer.\r\n\r\n1. Table feed\r\n2. Feeding\r\n\r\n27. List the mechanism used to drive the table.\r\n\r\n1. Open and cross belt drive\r\n2. Reversible motor\r\n3. Hydraulic\r\n\r\n28. What is belt shifter lever?\r\n\r\nIt is used to shift the cross and open belt from one pulley to other to reverse the direction of the table.\r\n\r\n29. List two general methods to drive the rack in planer.\r\n\r\n1. Through a train of gearing to bull gear engaging the rack.\r\n2. By a worm mounted on the motor spindle which meshes with the rack at an angle\r\n\r\n30. List the advantages of electric drive in planer.\r\n\r\n1. There is very little chance of any accident as the net driving arrangement is eliminated.\r\n2. Large number of cutting speed and return speed are available.\r\n3. Control is quick and accurate.\r\n\r\n31. List the feed mechanism used in planer.\r\n\r\na. By friction disc, b. By electric drive\r\n\r\n32. List the feed involved in the planer.\r\n\r\n1. Cross feed, 2. Down feed\r\n\r\n33. What are the factors considered to hold the work piece in planer?\r\n\r\n1. Work should be rigidly fixed to the table so that it may not be shifted out of its position while cutting activity progresses.\r\n2. Proper clamping should be needed all around the work piece.\r\n\r\n34. What are the devices used to clamp the work in planer?\r\n\r\n1. By standard clamping\r\n2. By special fixtures\r\n\r\n35. List the standard clamping devices used in planer.\r\n\r\n1. Heavy duty vice\r\n2. T bolt and clamps\r\n3. Angle plate\r\n4. Stops\r\n\r\n36. What is the use of planer jack?\r\n\r\nIt is used to support the overhanging parts.\r\n\r\n37. List the planer operation.\r\n\r\n1. Horizontal surface, 2. Vertical surface 3. Planning curved surfaces, 4. Planning slots and grooves.\r\n\r\n\r\n\r\nSlotter Machine Interview Question and Answers\u00a0\r\n\r\n38 What is slotter?\r\n\r\nIt is falls under the category of reciprocating types of machine tool similar to shaper.\r\n\r\nRead more :\u00a0What is Slotting Machine- Principal parts of Slotter Machine\r\n\r\n39 What is the difference between shaper and slotter?\r\n\r\n1. In shaper ram reciprocate about horizontal axis but slotter the ram reciprocate about vertical axis.\r\n\r\n40. What is the difference between vertical shaper and slotter?\r\n\r\nIn vertical shaper the holding the tool may also reciprocate at an angle to the horizontal table in addition to the vertical stroke.\r\n\r\n41. What is the use of slotter?\r\n\r\nIt is used to cutting groove,keyway,and slots of various shapes.\r\n\r\n42. What are the types of slotter?\r\n\r\n1. Puncher slotter, 2. Precision slotter\r\n\r\n43. What is puncher slotter?\r\n\r\nThe puncher slotter is heavy, rigid machine designed for removal of large amount of work pieces. It is driven by a spiral pinion meshing with the rack teeth on the under side of the ram.\r\n\r\n44. What are the parts involved in slotter?\r\n\r\n1. Base 2. Column 3. Saddle 4. Cross slide 5.Rotating table. 6. Ram and tool head.\r\n\r\n45. List the ram driving mechanism used in slotter.\r\n\r\n1. Whith worth quick return mechanism\r\n2. Variable speed reversible motor drive mechanism.\r\n3. Hydraulic drive.\r\n\r\n46. List the feed involved in slotter.\r\n\r\n1. Longitudinal feed\r\n2. Cross feed\r\n3. Circular feed.\r\n\r\n47. List the slotter operation.\r\n\r\n1. Machining flat surfaces 2. Cylindrical surfaces 3. Irregular surfaces. 4. Slot, key ways and grooves.\r\n\r\n\r\n\r\nMore Resources \/articles\r\nTechnical Mechanical Interview Question and Answers\r\nManufacturing Technology Notes , Articles\r\nMachine Tool Articles , notes , Interview Que &amp; Ans\r\nLatest seminar topic index - Report ,PPT Download\r\n\r\n\r\n\r\n&nbsp;","headline":"Shaper , Planer , Slotter machine | Interview Question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-05-10","mainEntityOfPage":"False","dateModified":"February 19, 2020","image":{"@type":"ImageObject","url":"","height":0,"width":0},"publisher":{"@context":"http:\/\/schema.org\/","@type":"Organization","name":"Learn Mechanical Engineering","logo":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2020\/01\/learn-mech-logo-1-300x300.png","height":600,"width":60}}}</script> <article class="article-card horizontal no-thumb"><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/basic-of-metal-cutting-interview-question-and-answers/">Basic Of Metal Cutting | Interview Question and Answers</a></p></header><div class="excerpt"><p>Basic Of Metal Cutting | Interview Question and Answers
Basic Of Metal Cutting | Interview , VIVA, Oral Question and Answers  Read Also : Theory Of Metal Cutting | Interview question and...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/basic-of-metal-cutting-interview-question-and-answers/" aria-label="View Post: Basic Of Metal Cutting | Interview Question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Basic Of Metal Cutting | Interview Question and Answers","url":"\/\/www.gunkrazy.com\/basic-of-metal-cutting-interview-question-and-answers\/","articleBody":"Basic Of Metal Cutting | Interview Question and Answers\r\nBasic Of Metal Cutting | Interview , VIVA, Oral Question and Answers\r\n\r\nRead Also :\u00a0Theory Of Metal Cutting | Interview question and Answers\r\n\r\n1. Explain the cutting shaping process?\r\n\r\nThe required shape of metal is obtained by removing the unwanted material from the work piece in the form of chips is called cutting shaping. Example: Turning, Drilling, Milling, Boring etc.\r\n\r\n2. Classify the relative motion between work piece and cutting tool.\r\n\r\n(i) Rotation of work against the tool. Example: Turning,\r\n(ii) Rotation of tool against work piece. Example: Drilling, Milling,\r\n(iii) linear movement of the work piece against the tool. Example: Planer,\r\n(iv) Linear movement of the tool against the work. Example: Shaper.\r\n\r\n3. What are all the different types of cutting tool?\r\n\r\n(i) Single point cutting tool, (ii) Multiply point cutting tool.\r\n\r\n4. Classify the various angles in cutting tool?\r\n\r\n1) Back rake angle 2) Side rake angle 3) End relief angle 4) Side relief angle 5) Side cutting angle 6) End cutting angle.\r\n\r\n5. What is tool signature?\r\n\r\nThe various angles of tools are mentioned in a numerical number in particular order. That order is known as tool signature.\r\n\r\nRead more :\u00a0Nomenclature |Terminology of Single Point Cutting Tool\r\n\r\n6. What is effect of back rake angle and mention the types?\r\n\r\nBack rake angle of tool is increases the strength of cutting tool and cutting action. \r\n\r\nIt can be classified into two types. 1. Positive rake angle. 2. Negative rake angle.\r\n\r\n7. What is side rake angle and Mention its effects?\r\n\r\nThe angle between the tool face and the line parallel to the base of the tool. It is used to control chip flow.\r\n\r\n8. What is clearance angle and mention the types?\r\n\r\nThese are the slopes ground downwards from the cutting edges. The clearance angle can be classified into two types. i Side relief angle. Ii. End relief angle. .\r\n\r\n9. Explain the nose radius?\r\n\r\nJoining of side and end cutting edges by means of small radius in order to increase the tool life and better surface finish on the work piece.\r\n\r\n10. What are all conditions for using positive rake angle?\r\n\r\na. To machine the work hardened materials.\r\nb. to machine low strength ferrous and non-ferrous metals.\r\nc. To turn the long shaft of small diameters.\r\nd. To machine the metal below recommended cutting speeds.\r\n\r\n11. When will the negative rake angles be used?\r\n\r\na. To machine high strength alloys. b. The machine tools are more rigid. c.The feed rates are high. d. To give heavy and interrupted cuts.\r\n\r\n12. Classify the types of metal cutting process?\r\n\r\nThe metal cutting processes are mainly classified into two types.\r\na. Orthogonal cutting process (two dimensional cutting),\r\nb. Oblique cutting process (Three dimensional cutting).\r\n\r\n13. Define orthogonal and oblique cutting?\r\n\r\nOrthogonal cutting :- The cutting edge of tool is perpendicular to the work piece axis.\r\nOblique cutting :- The cutting edge is inclined at an acute angle with normal to the cutting velocity vector is called oblique cutting process.\r\n\r\nRead More : Difference between Orthogonal and Oblique Cutting\r\n\r\n14. What is shear plane?\r\n\r\nThe material of work piece is stressed beyond its yield point under the compressive force. This causes the material to deform plastically and shear off. The plastic flow takes place in a localized region is called shear plane.\r\n\r\n15. What is cutting force?\r\n\r\nThe sheared material begins to flow along the cutting tool face in the form of small pieces. The compressive force applied to form the chip is called cutting force.\r\n\r\n16. What is chip and mention its different types?\r\n\r\nThe sheared material begins to flow along the cutting tool face in the form of small pieces is called chip. The chips are mainly classified into two types.\r\na. Continuous chip. b. Discontinuous chip. c. Continuous chip with built up edge.\r\n\r\n18. When will the continuous chip deformed?\r\n\r\nThe following factor favours the formation of continuous chip. \r\n\r\n(i) Ductile material (ii) Smaller depth of cut (iii) High cutting speed (iv) Large rake angle\r\n(v) Sharp cutting edge. (vi) Proper cutting fluid, (vii) Low friction between tool face and chips.\r\n\r\n19. What are the favourable factors for discontinuous chip formation?\r\n\r\na. Machining of brittle material, b. Small rake angle, c. Higher depth of cut, d. Low cutting speeds , e. Excess cutting fluid. f. Cutting ductile material with low speed and small rake angle of the tool.\r\n\r\n20.What are the favorable factors for continuous chip with built up edge?\r\n\r\na. Low cutting speed.\r\nb. Small rake angle.\r\nc. Coarse feed.\r\nd .Strong adhesion between chip and tool face.\r\ne. Insufficient cutting fluid.\r\n\r\nRead More :\u00a0Types Of Chips in Metal Cutting | Basic Of Metal Cutting\r\n\r\n19. What is chip thickness ratio?\r\n\r\nThe ratio of chip thickness before cutting, to chip thickness after cutting is called chip thickness ratio.\r\n\r\n20. What is chip reduction co-efficient?\r\n\r\nThe reciprocal of chip thickness ratio is called chip reduction co-efficient.\r\n\r\n21. What are purposes of chip breakers?\r\n\r\nThe chip breakers are used to break the chips into small pieces - for removal, safety and to prevent to machine and work.\r\n\r\n22. What is the difficulty for long and continuous chip?\r\n\r\nDuring machining, long and continuous chip that are formed at high cutting speed will affect machining. It will spoil tool, work and machine. These chips are hard, sharp and hot. It will be difficult to remove metal and also dangerous to safety.\r\n\r\n23. Classify the different types of chip breakers?\r\n\r\nThe chip breakers are classified into three types. a. Step type. b.Groove type. c. Clamp type.\r\n\r\n24. What are the cuttings forces acting on the cutting tool?\r\n\r\nDuring the cutting process, the following three component of cutting forces acting mutually right angles.\r\na. Feed force Fx acts in a horizontal plane, but in the Direction opposite to feed.\r\nb. Thrust force Fy acts in a direction perpendicular to the generated surface.\r\nc. Cutting force Fz in the direction of the main cutting motion.\r\n\r\n26. What are the assumptions made by merchant circle?\r\n\r\na. The chip formation will be continuous without built up edge.\r\nb. During cutting process cutting velocity remains constant,\r\nc. The cutting tool has a sharp cutting edge so that it does not make flank contact to the work piece.\r\n\r\n27. What is metal removal rate?\r\n\r\nIt is defined as the volume of metal removed in unit time. It is used to calculate time required to remove specified quantity of material from the work piece.\r\n\r\nRead More :\u00a0Chip breakers | Need , Purpose , Principles of chip-breaking\r\n\r\n28. What are the assumptions made in lee and Shaffer's theory?\r\n\r\na. The work ahead of the tool behaves as ideal plasticmass\r\nb. There exists a shear plane which separates the chip and work piece\r\nc. No hardening in chip occurs.\r\n\r\n29. Explain the total energy of the cutting process?\r\n\r\nTotal energy per unit volume is approximate equal to the sum of following four energies.\r\na. Shear energy per unit volume in shear plane,\r\nb. Friction energy per unit volume in tool face,\r\nc. Surface energy per unit volume due to the formation of a new surface area in cutting.\r\nd. Momentum energy per unit volume, due to the change in momentum associated with the metal it crosses the shear plane.\r\n\r\n30. Define mach inability of metal?\r\n\r\nMach inability is defined as the ease with which a material can be satisfactorily machined.\r\n\r\n31. What are the factors affecting the machinability?\r\n\r\na. Chemical composition of work piece material,\r\nb. Microstructure of work piece material\r\nc. Mechanical properties like ductility, toughness etc.\r\nd. Physical properties of work materials.\r\ne. Method of production of the work materials.\r\n\r\n32. What are all the tool variables affecting the machinabiliry?\r\n\r\na. Tool geometry and tool material.\r\nb. Nature of engagement of tool with the work.\r\nc. Rigidity of tool.\r\n\r\n33. What are the machine variables affecting the machinability?\r\n\r\na. Rigidity of machine. b. Power and accuracy of the machine tool.\r\n\r\n34. How the machinability can be evaluated?\r\n\r\nThe following criteria suggested for evaluating machinability.\r\na. Tool life per grind,\r\nb. Rate of removal per tool grind,\r\nc. Magnitude of cutting forces and power consumption. Surface finish.\r\ne. Dimensional stability of finished work.\r\nf. Heat generated during cutting.\r\ng. Ease of chip disposal.\r\nh. Chip hardness, shape and size.\r\n\r\n35. Mention the advantage of high machinability?\r\n\r\na. Good surface finish can be produced,\r\nb. High cutting speed can be used,\r\nc. Less power consumption,\r\nd. Metal removal rate is high,\r\ne. Less tool wear.\r\n\r\n36. What is machinability index?\r\n\r\nIt is a comparison of machinability of different material to standard material. US material standard for 100% machinability is SAE 1112 hot rolled steel.\r\n\r\nRead More :\u00a0What Is Machinability Index | Ways Of Improving Machinability\r\n\r\n37. Classify the tool wear?\r\n\r\nThe tool wear is generally classified as follows, (i) Flank wear or crater wear (ii) Face wear (iii) Nose wear\r\n\r\nTypes Of tool Wear Zones\r\n\r\n38. How tool life is defined?\r\n\r\nTool life is defined as time elapsed between two consecutive tool resharpening. During, this period tool serves effectively and efficiently.\r\n\r\n39. What are the ways of representing tool life?\r\n\r\nThe following are some of the ways of expressing tool life.\r\ni. Volume of metal removed per grind,\r\nii. Number of work piece machined per grind, iii. Time unit.\r\n\r\n40. What are the factors affecting tool life?\r\n\r\ni. Cutting speed ii. Feed and depth of cut iii. Tool geometry iv. Tool material v. Cutting fluid vi. Work material vii. Rigidity of work, tool and machine.\r\n\r\n41. Express the Taylor's tool life equation.\r\n\r\nTaylor's tool life equation\r\nVT ^ n = C\r\nV= Cutting speed in m\/min.\r\nT = Tool life in minute\r\nC = Constant\r\nn = Index depends upon tool and work.\r\n\r\nRead Also :\u00a0Merchant\u2019s circle diagram | Advantages and Disadvantages\r\n\r\n42. What are all the factors considered for selection of cutting speed?\r\n\r\ni. Tool life ii.Properties of material being machined, iii.Rate of feed iv.Depth of cut v.Tool geometry. Vi.Cutting fluid used, vii.Type of machining process viii.Surface finish to be obtained.\r\n\r\n43. What are the factors should be considered for selection of tool materials?\r\n\r\ni. Volume of production\r\nii. Tool design\r\niii. Type of machining process\r\niv. Physical &amp; Chemical properties\r\nv. Rigidity and condition of machine.\r\n\r\n44. What are the important characteristics?\r\n\r\ni. Hot hardness\r\nii. Wear resistance\r\niii. Toughness\r\niv. Low friction\r\nv. Cost of tool\r\nvi. High thermal conductivity\r\nvii. Resistance to thermal shock\r\nviii. Easy to grind and sharpen.\r\n\r\n45. Name any four tools material?\r\n\r\ni. Carbon tool steel\r\nii. High speed steel\r\niii. Cemented carbides\r\niv. Ceramics\r\nv. Diamonds\r\n\r\nRead More :\u00a0Properties Of tool Material -Types Of Tool Materials\r\n\r\n46. What is the function of cutting fluids?\r\n\r\ni. It is used to cool the cutting tool and work piece,\r\nii. It lubricates the cutting tool and thus reduces the co-efficient of friction between tool and work,\r\niii. It improves the surface finish as stated earlier,\r\niv. It causes the chips to break up into small parts,\r\nv. It protects the finished surface from corrosion,\r\nvi. It washes away the chips from the tool. It prevents the tool from fouling,\r\nvii. It prevents corrosion of work and machine.\r\n\r\n47. What are the properties of cutting fluid?\r\n\r\ni. It should have good lubricant properties,\r\nii. High heat absorbing capacity,\r\niii. It should have a high specific heat, high heat conductivity and high film co-efficient,\r\niv. High flash point.\r\nv. It should be odorless,\r\nvi. It should be non-corrosive to work and tool,\r\nvii.It should have low viscosity to permit free flow of the liquid.\r\n\r\n48. What is built up edge?\r\n\r\nDuring cutting process, the interface temperature and pressure is.\r\n\r\n49. Briefly differentiate between orthogonal cutting i cutting?\r\n\r\nOrthogonal cutting\r\n\r\n \tThe cutting edge of the tool is perpendicular to the cutting velocity vector.\r\n \tThe chip flows over the tool face and the direction of chip-flow velocity is normal to the cutting edge.\r\n \tThe cutting edge clears the width of the work piece on either ends. (i.e. No side flow)\r\n \tThe maximum chip thickness occurs at its middle.\r\n\r\nOblique cutting\r\n\r\n \tThe cutting edge is inclined at an acute angle with normal to the cutting velocity vector.\r\n \tThe chip flows on the tool face making an angle with the normal on the cutting edge.\r\n \tThe cutting edge may or may not clear the width of the work piece.\r\n \tThe maximum chip thickness may not occur at the middle.\r\n\r\n50. Mention the various parts single point cutting tool?\r\n\r\n1) Shank , 2) Face , 3) Flank , 4) Base, 5) Nose, 6) Cutting edge.\r\n\r\n\r\n\r\n More Resources \/articles\r\n Technical Mechanical Interview Question and Answers\r\n Manufacturing Technology Notes , Articles\r\nMechanical Subjectwise Basic Concept Notes ,Articles\r\n Design and Fabrication projects - Abstract , Report Download\r\nNew Mechanical Projects 2020 ( All Projects Post Index List )\r\n\r\n\r\n\r\n&nbsp;","headline":"Basic Of Metal Cutting | Interview Question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-05-09","mainEntityOfPage":"False","dateModified":"February 19, 2020","image":{"@type":"ImageObject","url":"","height":0,"width":0},"publisher":{"@context":"http:\/\/schema.org\/","@type":"Organization","name":"Learn Mechanical Engineering","logo":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2020\/01\/learn-mech-logo-1-300x300.png","height":600,"width":60}}}</script> <article class="article-card horizontal no-thumb"><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/plastic-components-manufacturing-interview-question-and-answers/">Plastic Components Manufacturing | Interview question and Answers</a></p></header><div class="excerpt"><p>Plastic Components Manufacturing | Interview question and Answers
Plastic Components Manufacturing | Interview , viva , oral  question and Answers  1. Classify the types of plastics.  1....</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/plastic-components-manufacturing-interview-question-and-answers/" aria-label="View Post: Plastic Components Manufacturing | Interview question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Plastic Components Manufacturing | Interview question and Answers","url":"\/\/www.gunkrazy.com\/plastic-components-manufacturing-interview-question-and-answers\/","articleBody":"Plastic Components Manufacturing | Interview question and Answers\r\nPlastic Components Manufacturing | Interview , viva , oral\u00a0 question and Answers\r\n\r\n1. Classify the types of plastics.\r\n\r\n1. Thermoplastics\r\n2. Thermosetting plastics.\r\n\r\n2. Classify thermoplastics.\r\n\r\n1. Amorphous \u2013 Methacrylate, polyvinyl chloride, cellulose, fluorinated polymer\r\n2. Crystalline \u2013 polyethylene, polyamide, polypropylene\r\n\r\n3. List the application of blow moulding.\r\n\r\nIt is used to produce hollow components like containers, drink bottles etc.\r\n\r\nBlow molding Process\r\n\r\n4. What are the characteristics of thermosetting plastics?\r\n\r\n1. It cannot soften once it moulded even at high temperature.\r\n2. These plastics have cross linked molecules\r\n3. These links are broken at high temperature but important properties are destroyed.\r\n\r\n5. Give some example for thermosetting plastics.\r\n\r\nPhenol formaldehyde, urea formaldehyde, phenolic, polyester, epoxide.\r\n\r\n6. Distinguish between thermo and thermosetting plastics.\r\n\r\n1. They can be repeadly softened 1. Once hardened and set, they do by heat an hardened by cooling. not soften with the application of heat.\r\n2. They are comparatively softer 2. They are more stronger and and less strong harder than thermoplastics\r\n3. They are produced by the 3. They are produced by the Polymerization condensation Polymerization\r\n4. They are usually supplied as 4. They are usually supplied in granular material polymerized form.\r\n\r\n7. What are the types of injection mouldings?\r\n\r\n1. Straight plunger type\r\n2. Single stage reciprocating screw type\r\n3. Two stage plunger or screw plasticizer type.\r\n\r\n8. What is extrusion?\r\n\r\nIt is the term applied to the Process OF shaping plastics through die orifice. It is a continuous process.\r\n\r\n9. List the parts used in the transfer moulding.\r\n\r\n1. Plunger\r\n2. Sprue.\r\n3. Knockout pins\r\n4. Cooling systems\r\n5. Transfer chamber.\r\n\r\n10. What is the use of torpedo and hopper?\r\n\r\nHopper \u2013 It is used to feed the granular form of material in to the heated cylinder.\r\nTorpedo \u2013 It helps in spreading the moulding material uniform around the wall of the heated cylinder.\r\n\r\n11. What is the use of rotational moulding?\r\n\r\nIt is used to produce the hollow component like toys. Normally it is used for polyvinyl chloride, polyethylene.\r\n\r\n12. What is calendaring?\r\n\r\nIt is used to produce sheets and films from plastics materials such as polyvinyl chloride, polyethylene.\r\n\r\n13. What is Parison?\r\n\r\nThe blow moulding process starts with the production of a tube made of thermoplastics material. This is called parison.\r\n\r\n14. List the types of joining of plastics.\r\n\r\n1. Mechanical fastening\r\n2. Solvent bonding\r\n3. Hot plate welding\r\n4. Induction welding.\r\n\r\n15. Define - solvent welding.\r\n\r\nIt is used to join the plastics by the help of solvent. The solvent is used to soften the plastics and joining by pressing together.\r\n\r\n\r\n\r\nMore Resources \/articles\r\nManufacturing Technology Notes , Articles\r\n Technical Mechanical Interview Question and Answers\r\n Mechanical Subjectwise Basic Concept Notes ,Articles\r\nNew Mechanical Projects 2020 ( All Projects Post Index List )\r\n\r\n\r\n\r\n&nbsp;","headline":"Plastic Components Manufacturing | Interview question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-05-09","mainEntityOfPage":"False","dateModified":"February 19, 2020","image":{"@type":"ImageObject","url":"","height":0,"width":0},"publisher":{"@context":"http:\/\/schema.org\/","@type":"Organization","name":"Learn Mechanical Engineering","logo":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2020\/01\/learn-mech-logo-1-300x300.png","height":600,"width":60}}}</script> <article class="article-card horizontal no-thumb"><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/joining-process-welding-interview-question-and-answers/">Joining Process &#8211; Welding | Interview Question and Answers</a></p></header><div class="excerpt"><p>Joining Process - Welding | Interview Question and Answers
Joining Process - Welding | Interview , VIVA, Oral Question and Answers  1. What are the types of joints?  1. Permanent joint 2....</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/joining-process-welding-interview-question-and-answers/" aria-label="View Post: Joining Process &#8211; Welding | Interview Question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Joining Process &#8211; Welding | Interview Question and Answers","url":"\/\/www.gunkrazy.com\/joining-process-welding-interview-question-and-answers\/","articleBody":"Joining Process - Welding | Interview Question and Answers\r\nJoining Process - Welding | Interview , VIVA, Oral Question and Answers\r\n\r\n1. What are the types of joints?\r\n\r\n1. Permanent joint 2. Temporary joints\r\n\r\n2. Give some example for permanent joints.\r\n\r\n1. Riveted joint\r\n2. Welded joint\r\n\r\n3. Define \u2013 Welding.\r\n\r\nWelding may be defined as the process of joining similar metals by the application of heat, with or without application of pressure and filler material.\r\n\r\n4. What are the advantages of welding?\r\n\r\n1. It produces permanent joints.\r\n2. The overall cost of the welding equipment is very low.\r\n3. A Large number of metals can be welded.\r\n4. A good weld is as strong as base metal.\r\n\r\n5. What are the types of welding process?\r\n\r\n1. Pressure welding\r\n2. Non-pressure welding\r\n\r\n6. Give some example for pressure welding.\r\n\r\nSpot welding, seam welding, lap and butt welding, projection welding.\r\n\r\n7. Give some example for non - pressure welding.\r\n\r\n1. Gas welding\r\n2. Electric arc welding.\r\n\r\n8. What is the principal of resistance welding?\r\n\r\nThe current is passes through the work pieces causes local heating and temperature rises to fusion point. Subsequent applications of pressure result in permanent joining of work pieces.\r\n\r\n9. Give some example for resistance welding.\r\n\r\nSpot welding, seam welding, butt welding, projection welding.\r\n\r\n10. Give some example for gas welding.\r\n\r\n1. Oxy acetylene welding\r\n2. Oxy hydrogen welding\r\n3. Oxy butane welding.\r\n\r\n11. What are the types of flame used in gas welding?\r\n\r\n1. Neutral flame\r\n2. Oxidizing flame\r\n3. Reduction flame.\r\n\r\n12. What are the equipments used in gas welding?\r\n\r\nAcetylene cylinder, gas cylinder, trolley, hose and hose fitting, pressure regulator, Welding torch.\r\n\r\n13. List the technique used in gas welding.\r\n\r\n1. Left ward welding. 2. Rightward welding.\r\n3. Vertical welding 4. Overhead welding.\r\n\r\n14. List the power sources used in arc welding.\r\n\r\n1. AC machine 2. DC machine\r\n3. Transformer 4. Transformer with DC rectifier\r\n\r\n15. What is the use of flux?\r\n\r\nTo avoid the formation of oxide and get strong perfect weld. It takes away from the impurities present in the surface of metal.\r\n\r\n16. Give some example for commonly used flux materials.\r\n\r\nBorex, sodium chloride.\r\n\r\n17. What is electrode?\r\n\r\nElectrode made of metallic wire called core wire, coated uniformly protective coating called flux.\r\n\r\n18. What are the types of electrode?\r\n\r\n1. Bare electrode 2. Dust coated electrode\r\n\r\n19. What are the types of welding rods?\r\n\r\nLow carbon steel rod, mild steel rod, vanadium steel rod.\r\n\r\n20. List the spot welding methods.\r\n\r\nDirect, indirect, push pulls method.\r\n\r\napplication of resistance spot welding\r\n\r\n21. What is seam welding?\r\n\r\nIt is the resistance welding process. The heat is produced due to resistance against current. It is also called stitch welding.\r\n\r\n22. Define - Electro slag welding.\r\n\r\nIt is the welding process in which metal fused together by molten slag which melt the filler material and surface of the work to be welded.\r\n\r\n23. What are the advantages of AC arc welding?\r\n\r\n1. The transformer maintenance cost is less.\r\n2. Efficiency is very high.\r\n3. The power available is very less.\r\n\r\n24. What is submerged arc welding?\r\n\r\nThe arc is produced between the electrode and the work piece. The arc, end of electrode, the molten pool is submerged in the molten pool.\r\n\r\n25. What is the use of inert gases in TIG welding?\r\n\r\nIt is used to avoid atmospheric contamination of the weld pool. The gases used in the welding process are argon helium hydrogen.\r\n\r\n26. What is the difference between TIG and MIG welding?\r\n\r\nThere is no filler material used in the MIG welding instead OF filler material some inert gases are used.\r\n\r\n27. What are the equipments used in the TIG welding?\r\n\r\n1. Electrode, filler material, FLUX\r\n2. Welding power source\r\n3. Inert gas cylinder\r\n4. Pressure regulator.\r\n\r\n28. What is the use of wire feed mechanism in MIG welding?\r\n\r\nIt is used to deliver electrode to the constant or varying speed.\r\n\r\n29. List the types of arc used in the plasma arc welding?\r\n\r\n1. Transferred arc\r\n2. Non transferred arc.\r\n\r\n30. What is Thermit welding?\r\n\r\nIt is the welding process employing chemical energy is used to produce high temperature.\r\n\r\n31. What are the equipments used in Thermit welding?\r\n\r\n1. Crucible\r\n2. Mould\r\n3. Supporting structure.\r\n\r\n32. What is the principal of Electron beam welding?\r\n\r\nThe heat is generated from the kinetic energy of intense beam of high velocity electron.\r\n\r\n33. What are the types of weld defects?\r\n\r\n1. Dimensional defects \u2013 Warpage, incorrect joint preparation, size and profile.\r\n2. Structural defects \u2013 porosity, non metallic inclusion, incomplete fusion, inadequate penetration.\r\n3. Defective properties \u2013 low strength, toughness.\r\n\r\n32. What is slag inclusion?\r\n\r\nIt is a defect in the welding process in which failure to remove the slag after each layer in a multilayer in the welding operation lead to slag inclusion.\r\n\r\n33. What is the principle crack in the welding?\r\n\r\n1. Hot cracking \u2013 It occurs at high temperature just below freezing point. Excessive sulpher and carbon content in promotes the cracking.\r\n2. Cold cracking \u2013 It occurs at room temperature. It occurs due to change in volume at weld cool.\r\n\r\n34. List the method involve in soldering.\r\n\r\n1. Torch method\r\n2. Furnace and hot plate method\r\n3. Soldering iron method\r\n4. Induction method.\r\n\r\n35. What is soldering?\r\n\r\nSoldering is the metal joining process with the help of the low melting point metal by the use of filler material and heat. The melting point of filler metal is below 427\u00b0C.\r\n\r\n36. What is brazing?\r\n\r\nBrazing may be defined as the technique of joining two similar or dissimilar materials by the addition of filler material whose melting point is above 427\u00b0C.\r\n\r\n\r\n\r\nMore Resources \/articles\r\nManufacturing Technology Notes , Articles\r\nLatest seminar topic index - Report ,PPT Download\r\nMechanical Subjectwise Basic Concept Notes ,Articles\r\nProduct Ideas , Innovative Machine Ideas Projects\r\nNew Mechanical Projects 2020 ( All Projects Post Index List )\r\n\r\n\r\n\r\n&nbsp;","headline":"Joining Process &#8211; Welding | Interview Question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-05-09","mainEntityOfPage":"False","dateModified":"February 19, 2020","image":{"@type":"ImageObject","url":"","height":0,"width":0},"publisher":{"@context":"http:\/\/schema.org\/","@type":"Organization","name":"Learn Mechanical Engineering","logo":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2020\/01\/learn-mech-logo-1-300x300.png","height":600,"width":60}}}</script> <article class="article-card horizontal "> <a href="//www.gunkrazy.com/metal-casting-process-interview-question-and-answers/" rel="nofollow"><div class="image-container" style="background-image: url('//www.gunkrazy.com/wp-content/uploads/2019/05/difference-between-green-sand-mould-and-dry-sand-mould-300x94.jpg')"></div><span class="sr-only">link to Metal Casting Process | Interview Question and Answers</span></a><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/metal-casting-process-interview-question-and-answers/">Metal Casting Process | Interview Question and Answers</a></p></header><div class="excerpt"><p>Metal Casting Process | Interview Question and Answers
Metal Casting Process | Interview , VIVA , Oral Question and Answers  Read More :
Casting Process | Foundry interview Question and...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/metal-casting-process-interview-question-and-answers/" aria-label="View Post: Metal Casting Process | Interview Question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Metal Casting Process | Interview Question and Answers","url":"\/\/www.gunkrazy.com\/metal-casting-process-interview-question-and-answers\/","articleBody":"Metal Casting Process | Interview Question and Answers\r\nMetal Casting Process | Interview , VIVA , Oral Question and Answers\r\n\r\nRead More :\r\nCasting Process | Foundry interview Question and Answers\r\nCasting Process- Mechanical Interview Questions with answers\r\n\r\n1. What is draft allowance? How is it provided for patterns?\r\n\r\nIt the vertical faces of pattern are perpendicular to parting line, the edges of mould may damaged when the pattern is removed from the sand. Hence the vertical faces are mode taper for easy removal of pattern. This slight taper given on the vertical sides of pattern in caused draft allowance.\r\n\r\n2. Name four different casting defects.\r\n\r\n \tShifts - Two halves mismatching or casting\r\n \tHot tear - Internal or external cracks\r\n \tFins - Thin projection of parting line\r\n \tInclusions - Foreign material present in casting\r\n\r\n3. What are the common allowances provided on pattern?\r\n\r\nThe various types of pattern allowances normally given are;\r\n1. Shrinkage allowance\r\n2. Machining or finish allowance\r\n3. Draft or taper allowance\r\n4. Distortion or camber allowance\r\n5. Rapping or shake allowance\r\n\r\n4. What are the functions or riser?\r\n\r\nThe main function of the riser is to supply excess molten metal to the solidifying casting it allows the escape of air.\r\n\r\n5. How pattern differ from casting?\r\n\r\nPattern is slightly larger in size as compared to the casting. Pattern may be in two or three pieces where as a casting is in one piece.\r\n\r\n6. What are the tests carried out to determine the quality of casting?\r\n\r\n \tDestructive test: Tensile, Impact, Hardness etc.\r\n \tNon Destructive: Visual, sound, magnetic particles, dye penetration, ultrasonic etc.\r\n\r\n7. Define foundry.\r\n\r\nA plant where the castings are made is called a foundry.\r\n\r\n8. Define casting.\r\n\r\nThe Process of producing metal parts by pouring molten metal in to the mould cavity of the required shape and allowing the metal to solidify. The solidified metal piece is called as casting.\r\n\r\n9. Define mould.\r\n\r\nMould is the cavity of the required casting made in wood, metal or plastics.\r\n\r\n10. Define pattern.\r\n\r\nThe Model of the required casting made in wood, metal or plastics.\r\n\r\n11. Name the various pattern materials.\r\n\r\nWood \u2013 Teak wood, white pine etc.\r\nMetal \u2013 cast iron, brass, aluminium etc.\r\nPlaster\r\nPlastic\r\nWax\r\n\r\n12. What are the different types of patterns used in foundries?\r\n\r\nSolid or single piece pattern, match plate pattern, split pattern, sweep pattern, skeleton Pattern, segmental pattern, loose piece pattern, shell pattern.\r\n\r\n13. When do you made core (or) what is function of core in moulding sand?\r\n\r\nTo provide a hollow surface or recess on the casting, the core is made.\r\n\r\n14. What is core print and what is its purpose?\r\n\r\nA core print is an extra projection on the pattern. It supports the core.\r\n\r\n15. What do you understand by core setting?\r\n\r\nCaring or heating the cores to obtain enough hardness is called as core setting.\r\n\r\n16. What are requirements of core sand?\r\n\r\nPermeability, refractoriness, strength collapsibility, stability.\r\n\r\n17. Mention the specific advantages of CO2 process.\r\n\r\n \tGive strength and hardness to core\r\n \tProcess cost is less\r\n \tIt saves time on heating\r\n \tIt can be stored for long use\r\n\r\n18. What is the properties good moulding sand?\r\n\r\nPorosity or permeability, plasticity or flowability, strength or cohesiveness, adhesiveness, Refractoriness, collapsibility.\r\n\r\n19. What are the different types of moulding sand?\r\n\r\nGreen sand, Dry sand, Synthetic sand, Loam sand, Special sand, parting sand.\r\n\r\n20. Write the composition of good moulding sand.\r\n\r\nGreen sand: It contains 5 to 8% water and 15 to 20% clay.\r\n\r\nLoam Sand: Loam sand is a mixture of fine sands, fine refractoriness, clay, graphite fiber and water. It contains more clay (50%)\r\n\r\n21. List out any five moulding tools.\r\n\r\nShovel, Riddle, Rammer, Trowel, Slick, Strike off bar, lifter\r\n\r\n22. What are the uses of runner and riser?\r\n\r\nRunner:\r\n\r\n \tIt is used to make a sprue a hole in the cope.\r\n \tIt receives the molten metal from the pouring basin and passes to the cavity.\r\n\r\nRiser:\r\n\r\n \tIt supplies excess molten metal to the solidifying casting.\r\n \tIt allows the escape of air.\r\n\r\n23. What are chaplets?\r\n\r\nSome times it is not possible to provide sufficient support for a core in the mould being poured, if the cores are bigger in size. In such cases the core is supported with rigid metal pieces called chaplets.\r\n\r\n24. Mention any 2 difference between green sand mould and dry sand mould. \r\n\r\ndifference between green sand mould and dry sand mould\r\n\r\n25. What are the different types of furnaces used for casting?\r\n\r\nCupola furnace, open hearth furnace, crucible furnace, pot furnace, Electric furnace.\r\n\r\n26. What is need for providing chills in casting?\r\n\r\nThe chills are used to provide directional solidification or to increase the rate of Solidification where the higher hardness required.","headline":"Metal Casting Process | Interview Question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-05-09","mainEntityOfPage":"False","dateModified":"February 19, 2020","image":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2019\/05\/difference-between-green-sand-mould-and-dry-sand-mould-300x94.jpg","height":94,"width":300},"publisher":{"@context":"http:\/\/schema.org\/","@type":"Organization","name":"Learn Mechanical Engineering","logo":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2020\/01\/learn-mech-logo-1-300x300.png","height":600,"width":60}}}</script> <nav class="pagination-wrapper" aria-label="article pagination"> <a class="prev page-numbers" href="?page_num=52">&laquo; PREV</a> <a class="page-numbers" href="?page_num=1"><span class="screen-reader-text">Page </span>1</a> <span class="page-numbers dots">&hellip;</span> <a class="page-numbers" href="?page_num=51"><span class="screen-reader-text">Page </span>51</a> <a class="page-numbers" href="?page_num=52"><span class="screen-reader-text">Page </span>52</a> <span aria-current="page" class="page-numbers current"><span class="screen-reader-text">Page </span>53</span> <a class="page-numbers" href="?page_num=54"><span class="screen-reader-text">Page </span>54</a> <a class="page-numbers" href="?page_num=55"><span class="screen-reader-text">Page </span>55</a> <span class="page-numbers dots">&hellip;</span> <a class="page-numbers" href="?page_num=338"><span class="screen-reader-text">Page </span>338</a> <a class="next page-numbers" href="?page_num=54">NEXT &raquo;</a></nav></section></main><aside id="secondary" class="widget-area"><div class="about-wrapper"><h2 class="widget-title" style="background: #d693c6; color: #ff392e">About Us</h2><div class="about-image" style="background-image: url('//www.gunkrazy.com/wp-content/uploads/2020/03/Sachin-Thorat-300x300-min.png')"></div><p class="about-copy">LearnMech.Com is a Mechanical Project-oriented platform run by Sachin Thorat who is a B-Tech Graduate in Mechanical Engineering. 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