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Concept drill

blanking

GATE Mechanical Engineering · Manufacturing Processes - Sheet Metal Operations · 1987-2024

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11
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2024 Q62

A blanking operation is performed on C20 steel sheet to obtain a circular disc having a diameter of 20 mm and a thickness of 2 mm. An allowance of 0.04 is provided. The punch size...

medium
2024 PYQ

A blanking operation is performed on C20 steel sheet to obtain a circular disc having a diameter of 20 mm and a thickness of 2 mm. An allowance of 0.04 is provided. The punch size...

mediumbasic explanation
2018 Q36

The percentage scrap in a sheet metal blanking operation of a continuous strip of sheet metal as shown in the figure is ________ (correct to two decimal places).

mediumanswer key
2014 PYQ

A rectangular hole of size $$100\,\,mm \times 50\,\,mm$$ is to be made on a $$5$$ $$mm$$ thick sheet of steel having ultimate tensile strength and shear strength of $$500$$ $$MPa$$...

easyanswer key
2012 PYQ

Calculate the punch size in $$mm,$$ for a circular blanking operation for which details are given below. Size of the blank $$25$$ $$mm$$ Thickness of the sheet $$2$$ $$mm$$ Radial...

mediumanswer key
2011 PYQ

The shear strength of a sheet metal is $$300MPa.$$ The blanking force required to produce a blank of $$100$$ $$mm$$ diameter from a $$1.54$$ $$mm$$ thick sheet is close to

easyanswer key
2007 PYQ

The force requirement in a blanking operation of low carbon steel sheet is $$5.0$$ $$kN.$$ The thickness of the sheet is $$'t'$$ and diameter of the blanked part is $$'d'.$$ For th...

easyanswer key
2004 PYQ

$$10$$ $$mm$$ diameter holes are to be punched in a steel sheet of $$3$$ $$mm$$ thickness. Shear strength of the material is $$400\,\,N/m{m^2}$$ and penetration is $$40\% $$. Shear...

mediumanswer key
2002 PYQ

In blanking operation the clearance is provided on

easyanswer key
2001 PYQ

The cutting force in punching and blanking operations mainly depends on

easyanswer key
1996 PYQ

A $$50$$ $$mm$$ diameter disc is to be punched out from a carbon steel sheet $$1.0$$ $$mm$$ thick. The diameter of the punch should be (Take clearance as $$3\% $$ of sheet thicknes...

mediumanswer key
1987 PYQ

For blanking and piercing operations, clearance is provided on the ................... and the ......................... respectively

easy