Materials Science and Manufacturing Engineering Miscellaneous
- The cutting force in punching and blanking operations mainly depends on
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Cutting force = τ × A
τ = Shear strengthCorrect Option: B
Cutting force = τ × A
τ = Shear strength
- A 50 mm diameter disc is to be punched out from a carbon steel sheet 1.0 mm thick. The diameter of the die should be (Take clearance as 3% of sheet thickness) _______.
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Clearness should be given on punch in Blanking operation. Die should be exact.
Correct Option: B
Clearness should be given on punch in Blanking operation. Die should be exact.
- The thickness of the blank needed to produce, by power spinning a missile cone of thickness 1.5 mm and half cone angle 30°
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Thickness of blank = cone thickness cos( 2α ) Thickness of blank = 1.5 = 3 mm cos60° Correct Option: A
Thickness of blank = cone thickness cos( 2α ) Thickness of blank = 1.5 = 3 mm cos60°
- For blanking and piercing operations, clearance is provided on the..... and the.... respectively.
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Punch & Die
Correct Option: A
Punch & Die
- The blank diameter used in thread rolling will be
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NA
Correct Option: D
NA