Materials Science and Manufacturing Engineering Miscellaneous
- Hot hardness in an essential property for
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Hot Hardness is the property of tool material to withstand at higher temperature with hardness.
Correct Option: D
Hot Hardness is the property of tool material to withstand at higher temperature with hardness.
- The heat generated in metal cutting is dissipated in different proportions into environment, tool, chip and workpiece. The correct order of this proportion in decreasing magnitude is (no cutting fluid is used)
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10 : 20 : 10 : 5–10 Maximum heat generated must goes with chip and remaining goes to workplace & tool least goes to the Environment
Correct Option: D
10 : 20 : 10 : 5–10 Maximum heat generated must goes with chip and remaining goes to workplace & tool least goes to the Environment
- In metal cutting BUE formation results in
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Detoriation of surface finish
Correct Option: C
Detoriation of surface finish
- Only negative rake angles are used with the following tool material
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Carbide tool are ceramics, which are having low toughness. So negative rakes angles are used.
Correct Option: C
Carbide tool are ceramics, which are having low toughness. So negative rakes angles are used.
- Thrust force in drilling can be reduced by... A., the point angle and by... B... the helix angle of the drill
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Reducing & Increasing.
Point angle in drill plays the role of side cutting edge angle as in single point turning tool.Correct Option: B
Reducing & Increasing.
Point angle in drill plays the role of side cutting edge angle as in single point turning tool.
