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GATE PI

Sheet Metal Forming Processes

Metal Forming

Previous Years Questions

Marks 1

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The ratio of press force required to punch a square hole of $$30$$ $$mm$$ side in a $$1$$ $$mm$$ thick aluminium sheet t...
GATE PI 2016
Circular blanks of $$10mm$$ diameter are punched from an aluminium sheet of $$2$$ $$mm$$ thickness. The shear strength o...
GATE PI 2013
Match the following metal forming processes with their associated stresses in the Work-piece ...
GATE PI 2012
...
GATE PI 2003
Which one is not a method of reducing cutting forces to prevent the overloading of press
GATE PI 2003
A cup of $$10$$ $$cm$$ height and $$5$$ $$cm$$ diameter is to be made from a sheet metal of $$2mm$$ thickness. The numbe...
GATE PI 2002
For $$50\% $$ penetration of work material, a punch with single shear equal to thickness will
GATE PI 2001
The function of draw bead in the deep drawing operation is to
GATE PI 1994
In producing a punched hole of $$20mm$$ diameter, the dimension of the punch is ........ given the radial die clearance ...
GATE PI 1994
In blanking operation, the best way to improve the smoothness and squarness of the edges is to
GATE PI 1994
In a bending operation, If the modulus of elasticity $$E$$ is increased keeping all other parameters unchanged, the spri...
GATE PI 1994
Wall thickness of drawn cup is controlled by
GATE PI 1992
A cup of $$10$$ $$cm$$ height and $$5$$ $$cm$$ diameter is to be made from a sheet metal of $$2mm$$ thickness. The numbe...
GATE PI 1991
In .................. A ................. operation the diameter of the desired hole will be smaller than the diameter...
GATE PI 1991
In progressive die (for sheet metal), spring loaded stripper plate is used to clamps the stock until:
GATE PI 1991

Marks 2

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Calculate the punch size in $$mm,$$ for a circular blanking operation for which details are given below. Size of the bla...
GATE PI 2012
A disc of $$200$$ $$mm$$ diameter is blanked from a strip of an aluminium alloy of thickness $$3.2$$ $$mm.$$ The materia...
GATE PI 2009
A blank of $$50$$ $$mm$$ diameter is to be sheared from a sheet of $$2.5$$ $$mm$$ thickness. The required radial clearan...
GATE PI 2008
Match the following ...
GATE PI 2008
Circular blanks of $$35$$ $$mm$$ diameter are punched from a steel sheet of $$2$$ $$mm$$ thickness. If the clearance per...
GATE PI 2007
A cup is to be drawn to a diameter of $$70mm$$ with $$35mm$$ depth from a $$0.5mm$$ thick sheet metal. The cup is drawn...
GATE PI 2006
A cup is to be drawn to a diameter of $$70mm$$ with $$35mm$$ depth from a $$0.5mm$$ thick sheet metal. The cup is drawn...
GATE PI 2006
It is required to punch a hole of diameter $$10mm$$ on a sheet of thickness $$3mm.$$ The shear strength of the work mate...
GATE PI 2006
In a surface broaching process, a broach having $$5mm$$ pitch and cut per teeth $$0.05mm$$ is used for reducing the thic...
GATE PI 2006
Match the items in Group - $${\rm I}$$ and $${\rm I}$$ $${\rm I}$$ ...
GATE PI 2006
A gear with $$84$$ teeth is to be machined using a milling process with indexing. The index plate has the following four...
GATE PI 2006
A work piece of $$1000$$ $$mm$$ length and $$300$$ $$mm$$ width is machined by planning operation with a feed of $$0.3$...
GATE PI 2006
It is required to punch a hole of diameter $$10mm$$ on a sheet of thickness $$3mm.$$ The shear strength of the work mate...
GATE PI 2006
A $$\phi \,\,25$$ $$mm$$ hole is pierced in a $$t=2.5mm$$ thick steel sheet having shear strength $$\tau = 350\,\,MPa.$...
GATE PI 2005
In deep drawing of sheet metal, spring loaded stripper clamps the work until:
GATE PI 2004
A hole of $$40$$ $$mm$$ diameter is pierced in a steel sheet of $$4$$ $$mm$$ thickness without shear on the tool. Shear ...
GATE PI 2004
Determine the load required to punch a $$20$$ $$mm$$ diameter hole in $$2$$ $$mm$$ thick sheet. The properties of the ma...
GATE PI 2004
A cylindrical cup of $$48.5$$ $$mm$$ diameter and $$52$$ $$mm$$ height has a corner radius of $$1.5$$ $$mm$$ Cold rolled...
GATE PI 2004
Consider the following statements related piercing and blanking $$1.$$ Shear on the punch reduces the maximum cutting fo...
GATE PI 2003
A hydraulic press is used to produce circular blanks of $$10$$ $$mm$$ diameter from a sheet of $$2$$ $$mm$$ thickness. I...
GATE PI 2003
In sheet metal working, the spring back increase when $$P:$$ Ratio of bend radius to sheet thickness is small $$Q:$$ Yo...
GATE PI 2002
In metal forming operation, the true strain in the $$X$$-direction is $$0.3$$ and in the $$Y$$-direction is $$-0.1.$$ Th...
GATE PI 1994
A hemispherical cup of radius $$'R'$$ is formed in a press working operation. The radius of blank would be
GATE PI 1992
Calculate the smallest punch diameter that can be designed for piercing sheet metal strip with the following data. Crush...
GATE PI 1990

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