Mikell P. Groover 2012

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© Mikell P. Groover 2012
Chapter 18 BULK DEFORMATION PROCESSES IN METAL WORKIING
Multiple Choice Quiz
There are 34 correct answers in this multiple choice quiz (some questions have multiple answers
that are correct). To achieve a perfect score on the quiz, all correct answers must be given. Each
correct answer is worth 1 point. Each omitted answer or wrong answer reduces the score by 1
point. Percentage score on the quiz is based on the total number of correct answers.
18.1 Which of the following are basic bulk deformation processes in metal forming (three correct
answers): (a) bar drawing, (b) blanking, (c) deep drawing, (d) extrusion, (e) forging, and (f)
stamping?
18.2 Rolling is a bulk deformation process in which the thickness of the work is reduced by
compressive forces exerted by two opposing rolls: (a) true or (b) false?
18.3 The starting workpiece in hot rolling of steel plate and sheet stock is which one of the
following: (a) bar stock, (b) billet, (c) bloom, (d) slab, or (e) wire stock?
18.4 Furnaces used to heat cast steel ingots to achieve a uniform temperature throughout prior to
rolling are called which of the following (one best answer): (a) annealing furnaces, (b) heat
treating ovens, (c) soaking pits, or (d) tempering furnaces?
18.5 The maximum possible draft in a rolling operation depends on which of the following
parameters (two correct answers): (a) coefficient of friction between roll and work, (b) roll
diameter, (c) roll velocity, (d) stock thickness, (e) strain, and (f) strength coefficient of the
work metal?
18.6 Which of the following stress or strength parameters is used in the computation of rolling
force (one best answer): (a) average flow stress, (b) compression strength, (c) final flow
stress, (d) tensile strength, or (e) yield strength?
18.7 Which of the following rolling mill types are associated with relatively small diameter rolls
in contact with the work (two correct answers): (a) cluster mill, (b) continuous rolling mill,
(c) four-high mill, (d) reversing mill, and (e) three-high configuration?
18.8 Production of pipes and tubes is associated with which of the following bulk deformation
processes (three correct answers): (a) extrusion, (b) hobbing, (c) ring rolling, (d) roll
forging, (e) roll piercing, (f) tube sinking, and (g) upsetting?
18.9 Which of the following stress or strength parameters is used in the computation of the
maximum force in a forging operation (one best answer): (a) average flow stress, (b)
compression strength, (c) final flow stress, (d) tensile strength, or (e) yield strength?
18.10 Which of the following operations are closely related to open-die forging (three best
answers): (a) cogging, (b) flashless forging, (c) fullering, (d) impression-die forging, (e)
Mannesmann process, (f) precision forging, and (g) upsetting?
18.11 Flash in impression die forging serves no useful purpose and is undesirable because it must
be trimmed from the part after forming: (a) true or (b) false?
Excerpts from this work may be reproduced by instructors for distribution on a not-for-profit basis for testing or instructional purposes only to
students enrolled in courses for which the textbook has been adopted. Any other reproduction or translation of this work beyond that permitted
by Sections 107 or 108 of the 1976 United States Copyright Act without the permission of the copyright owner is unlawful.
© Mikell P. Groover 2012
18.12 Which of the following are classified as forging operations (four correct answers): (a)
coining, (b) fullering, (c) impact extrusion, (d) roll piercing, (e) swaging, (f) thread rolling,
(g) trimming, and (h) upsetting?
18.13 Which of the following are alternative names for indirect extrusion (two correct answers):
(a) backward extrusion, (b) direct extrusion, (c) forward extrusion, (d) impact extrusion, and
(e) reverse extrusion?
18.14 Production of tubing is possible in indirect extrusion but not in direct extrusion: (a) true or
(b) false?
18.15 In metal extrusion, the extrusion ratio is also known by which of the following terms (one
best answer): (a) area reduction, (b) draft, (c) reduction, or (d) reduction ratio?
18.16 Which of the following stress or strength parameters is used in the computation of the force
in an extrusion operation (one best answer): (a) average flow stress, (b) compression
strength, (c) final flow stress, (d) tensile strength, or (e) yield strength?
18.17 In which of the following extrusion operations is friction a factor in determining the
extrusion force: (a) direct extrusion or (b) indirect extrusion?
18.18 Theoretically, the maximum reduction possible in a wire drawing operation, under the
assumptions of a perfectly plastic metal, no friction, and no redundant work, is which one of
the following: (a) zero, (b) 0.63, (c) 1.0, or (d) 2.72?
18.19 Which of the following bulk deformation processes are involved in the production of nails
for lumber construction (three best answers): (a) bar and wire drawing, (b) extrusion, (c)
flashless forging, (d) impression die forging, (e) rolling, and (f) upsetting?
18.20 Johnson's formula is associated with which one of the four bulk deformation processes: (a)
bar and wire drawing, (b) extrusion, (c) forging, and (d) rolling?
Excerpts from this work may be reproduced by instructors for distribution on a not-for-profit basis for testing or instructional purposes only to
students enrolled in courses for which the textbook has been adopted. Any other reproduction or translation of this work beyond that permitted
by Sections 107 or 108 of the 1976 United States Copyright Act without the permission of the copyright owner is unlawful.
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