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Metal Forming
Metal Forming Process
Sheet Metal Forming Processes
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GATE PI
Metal Forming Process
Metal Forming
Previous Years Questions
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Marks 1
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A steel wire of $$2$$ $$mm$$ diameter is to be drawn from a wire of $$5mm$$ diameter. The value of true strain developed...
GATE PI 2017
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The maximum reduction per pass during wire drawing of an aluminium alloy ignoring friction and redundant work is $$77\% ...
GATE PI 2015
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In rolling of a flat strip, the relative velocity of strip with respect to the roller is
GATE PI 2015
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The true stress at fracture of a tensile tested specimen, having an initial diameter of specimen at fracture is $$10$$ $...
GATE PI 2015
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In an open die forging, a circular disc is gradually compressed between two flat plates. The exponential decay of normal...
GATE PI 2014
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A moving mandrel is used in
GATE PI 2014
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In a rolling process, the state of stress of the material undergoing deformation is
GATE PI 2013
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A solid cylinder of diameter $$100$$ $$mm$$ and height $$50$$ $$mm$$ is forged between two frictionless flat dies to a h...
GATE PI 2012
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Hot die steel, used for large solid dies in drop forging, should necessarily have
GATE PI 2010
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Cold shut (lap) may occur in products obtained by:
GATE PI 2010
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Anisotropy in rolled components is caused by
GATE PI 2009
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Flash and gutter are provided in drop forging dies at the following stage:
GATE PI 2005
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Cold shut (lap) may occur in products obtained by:
GATE PI 2005
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In order to reduce roll pressure in strip rolling, back tension must be applied to strip.
GATE PI 1995
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A moving mandrel is used in
GATE PI 1994
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Which one of the following manufacturing process requires the provision of 'gutters'
GATE PI 1994
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Forces in hot extrusion is a function of the strain hardening component of the billet material.
GATE PI 1994
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In order to reduce roll pressure in strip rolling, back tension can be applied to strip.
GATE PI 1994
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Thread rolling is restricted to
GATE PI 1992
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At $${1000^ \circ }C$$ the crystallographic structure of iron is ....................
GATE PI 1991
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Seamless long steel tubes are manufactured by rolling, drawing and .............
GATE PI 1991
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While rolling a strip the peripheral velocity of the roll is ..... A .... than the entry velocity of the strip and is .....
GATE PI 1990
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Semi brittle materials can be extruded by
GATE PI 1990
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At the last hammer stroke the excess material from the finishing cavity of a forging die is pushed into .............
GATE PI 1989
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The blank diameter used in thread rolling will be
GATE PI 1989
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Collapsible tubes are made by
GATE PI 1989
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Marks 2
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A metallic strip having a thickness of $$12$$ $$mm$$ is to be rolled using two steel rolls, each of $$800$$ $$mm$$ diame...
GATE PI 2017
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Two solid cylinders of equal diameter have different heights. They are compressed plastically by a pair of rigid dies to...
GATE PI 2016
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In a single-pass rolling operation, a $$200$$ $$mm$$ wide metalic strip is rolled from a thickness $$10$$ $$mm$$ to a th...
GATE PI 2016
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Open die forging of a cylinder made of a rigid perfectly plastic material with yield strength of $$200$$ $$MPa$$ having ...
GATE PI 2015
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A $$80$$ $$mm$$ thick steel plate with $$400$$ $$mm$$ width is rolled to $$40mm$$ thickness in $$4$$ passes with equal r...
GATE PI 2014
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In a single pass rolling process using $$410mm$$ diameter steel rollers, a strip of width $$140mm$$ and thickness $$8mm$...
GATE PI 2012
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The thickness of a plate is reduced from $$30$$ $$mm$$ to $$10$$ $$mm$$ by successive cold rolling passes using identica...
GATE PI 2011
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In multi-pass operation, a round bar of $$10$$ $$mm$$ diameter and $$100$$ $$mm$$ length is reduced in cross-section by ...
GATE PI 2011
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In multi-pass operation, a round bar of $$10$$ $$mm$$ diameter and $$100$$ $$mm$$ length is reduced in cross-section by ...
GATE PI 2011
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In a rolling process, the roll separating force can be decreased by
GATE PI 2010
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During open die forging process using two flat and parallel dies, a solid steel disc of initial radius $$({R_{IN}})\,\,2...
GATE PI 2010
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Using direct extrusion process, a round billet of $$100$$ $$mm$$ length and $$50mm$$ diameter is extruded. Considering a...
GATE PI 2009
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A $$10mm$$ diameter annealed steel wire is drawn through a die at a speed of $$0.5/sec$$ to reduce the diameter by $$20\...
GATE PI 2008
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In a rolling process, thickness of a strip is reduced from $$4mm$$ to $$3mm$$ using $$300mm$$ diameter rolls rotating at...
GATE PI 2008
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A $$10mm$$ diameter annealed steel wire is drawn through a die at a speed of $$0.5/sec$$ to reduce the diameter by $$20\...
GATE PI 2008
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By application of tensile force, the cross sectional area of bar $$' P '$$ is first reduced by $$30\% $$ and then by an ...
GATE PI 2008
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The maximum possible percentage reduction in area per pass during wire drawing of an ideal plastic material without fric...
GATE PI 2007
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A copper strip of $$200$$ $$mm$$ width and $$30$$ $$mm$$ thickness is to be rolled to a thickness of $$25$$ $$mm.$$ The ...
GATE PI 2006
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A solid cylindrical stainless steel work piece of $$200mm$$ diameter and $$150mm$$ height. This component is reduced by ...
GATE PI 2006
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Consider the following statements: In comparison to hot working, in cold working, $$1.$$ Higher forces are required $$2...
GATE PI 2005
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Assertion (A) : Cold working of metals result in increase of strength and hardness. Reason (R) : Cold working reduces t...
GATE PI 2005
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A round billet made of brass is to be extruded (extrusion constant $$=250$$ $$MPa$$ ) at $${700^ \circ }C.$$ The billet ...
GATE PI 2005
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The true stress-true strain curve is given by $$\sigma = 1400\,{\varepsilon ^{0.33}},$$ where the stress $$\sigma $$ is...
GATE PI 2005
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A level having $${90^0}$$ bend is to be produced by drop forging using mild steel bar as raw material. The various opera...
GATE PI 2005
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The extrusion process(es) used for the production of toothpaste tubes is / are $$1.$$ Tube extrusion $$2.$$ Forward extr...
GATE PI 2004
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Consider the following steps in forging a connecting rod from the bar stock $$1.$$ blocking $$\,\,\,\,\,\,\,\,\,$$ $$\,...
GATE PI 2003
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Cold working produces the following effects $$1.$$$$\,\,\,\,\,\,\,\,\,\,\,\,\,\,$$ Stress are set up in the material $$...
GATE PI 2003
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An annealed copper wire of $$25 mm$$ diameter is drawn into a wire of $$5$$ $$mm$$ dia. The average yield stress in this...
GATE PI 1994
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...
GATE PI 1992
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To stress relive a cold worked steel part, it is heated to a temp close to ..... A....... and grains obtained after cool...
GATE PI 1992
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If the elongation factor during rolling of an ingot is $$1.22.$$ The minimum number of passes needed to produce a sectio...
GATE PI 1992
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Marks 5
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In a single pass flat rolling operation, a $$400$$ $$mm$$ wide steel strip having a thickness of $$10mm$$ is reduced to ...
GATE PI 2003
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In a single pass flat rolling operation, a $$400mm$$ wide steel strip having a thickness of $$10mm$$ is reduced to $$8mm...
GATE PI 2003
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Calculate the minimum number of hot rolling passes necessary to reduce an ingot of $$200mm$$ thickness to $$100mm$$ thic...
GATE PI 1993
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A steel wire of length $$100$$ $$m$$ and diameter $$12.214$$ $$mm$$ is drawn to a final diameter of $$10mm.$$ Tensile te...
GATE PI 1990
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A steel wire of length $$100$$ $$m$$ and diameter $$12.214$$ $$mm$$ is drawn to a final diameter of $$10mm.$$ Tensile te...
GATE PI 1990
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In a wire drawing operation diameter of $$6mm$$ is reduced in stages to a diameter of $$1.34mm.$$ Assuming ideally rigid...
GATE PI 1989
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