GATE ME
Production Engineering
Sheet Metal Forming Processes
Previous Years Questions

## Marks 1

Match the following metal forming processes with their associated stresses in the Work-piece ...
In blanking operation the clearance is provided on
The cutting force in punching and blanking operations mainly depends on
In deep drawing of sheets, the values of limiting draw ratio depends on
Wrinkling is a common defect found in
For blanking and piercing operations, clearance is provided on the ................... and the ......................... respectively

## Marks 2

A $$10$$ $$mm$$ deep cylindrical cup with diameter of $$15$$ $$mm$$ is drawn from a circular blank. Neglecting the variation in the sheet thickness, t...
In a sheet metal of $$2$$ $$mm$$ thickness a hole of $$10$$ $$mm$$ diameter needs to be punched. The yield strength in tension of the sheet material i...
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 she...
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 shear strength of a sheet metal is $$300MPa.$$ The blanking force required to produce a blank of $$100$$ $$mm$$ diameter from a $$1.54$$ $$mm$$ th...
In a shear cutting operation, a sheet of $$5mm$$ thickness is cut along a length of $$200mm.$$ The cutting blade is $$400mm$$ long and zero-shear $$(S... In a shear cutting operation, a sheet of$$5mm$$thickness is cut along a length of$$200mm.$$The cutting blade is$$400mm$$long and zero-shear$$(S...
In the deep drawing of cups, blanks show a tendency to wrinkle up around the periphery (flange). The most likely cause and remedy of the phenomenon a...
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 b...
Match the items in column $${\rm I}$$ and $${\rm I}$$ $${\rm I}$$ ...
A $$2$$ $$mm$$ thick metal sheet is to be bent at an angle of one radian with a bend radius of $$100$$ $$mm.$$ If the stretch factor is $$0.5,$$ the b...
$$10$$ $$mm$$ 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 ...
A shell of $$100$$ $$mm$$ diameter and $$100$$ $$mm$$ height with the corner radius of $$0.4$$ $$mm$$ is to be produced by cup drawing. The required b...
A metal disc of $$20$$ $$mm$$ diameter is to be punched from a sheet of $$2$$ $$mm$$ thickness. The punch and the die clearance is $$3\%$$. The requi...
Identify the stress strain in the flange portion of a partially drawn cylindrical cup when deep drawing without a blank holder
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 clearanc...
The thickness of the blank needed to produce, by power spinning a missile cone of thickness $$1.5mm$$ and half cone angle $$30deg$$
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