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16 Cards in this Set
- Front
- Back
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The starting workpiece in steel hot rolling of plate and sheet stock is which of the following? (a) bar stock (b) billet (c) bloom (d) slab (e) wire stock |
slab |
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The maximum possible draft in a rolling operation depends on which of the following parameters? (a) coefficient of friction between toll and work (b) roll diameter (c) roll velocity (d) stock thickness (e) strain (f) strength coefficient of the work metal |
coefficient of friction between roll and work |
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Which of the following stress or strength parameters is used in the computation of rolling force? (a) average flow stress (b) compression strength (c) final slow stress (d) tensile strength (e) yield stength |
average flow stress |
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Which of the following rolling mill types are associated with relatively small diameter rolls in contact with the work? (a) cluster mill (b) continuous rolling mill (c) four-high mill (d) reversing mill (e) three-high configuration |
cluster mill |
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Production of pipes and tubes is associated with which of the following bulk deformation processes? (3)
(a) extrusion (b) hobbing (c) ring rolling (d) roll forging (e) roll piercing (f) tube sinking (g) upsetting |
extrusion, roll piercing, tube sinking |
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Which of the following stress or strength parameters is used in the computation of the maximum force in a forging operation? (a) average flow stress (b) compression strength (c) final flow stress (d) tensile strength (e) yield strength |
final flow stress |
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Which of the following operation are closely related to open-die forging? (3)
(a) cogging (b) flashless forging (c) fullering (d) impression-die forging (e) mannesmann process (f) precision forging (g) soaking (h) upsetting |
cogging, fullering, upsetting |
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Flash in impression-die forging serves no useful purpose and is undesirable because it must be trimmed from the part after forming? (a) true (b) false |
false |
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Which of the following are classified as forging operations? (4)
(a) coining (b) fullering (c) impact extrusion (d) roll piercing (e) swaging (f) thread rolling (g) trimming (h) upsetting |
coining, fulling, swaging, upsetting |
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Which of the following are alternative names for indirect extrusion? (2)
(a) backward extrusion (b) direct extrusion (c) forward extrusion (d) impact extrusion (e) reverse extrusion |
backward extrusion, reverse extrusion |
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The production of tubing is possible in indirect extrusion but not in direct extrusion? (a) true (b) false |
false |
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Which of the following stress or strength parameters us used in the computation of the force in an extrusion operation? (a) average flow stress (b) compression strength (c) final flow stress (d) tensile strength (e) yield strength |
average flow stress |
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In which of the following extrusion operations is friction a factor in determining the extrusion force? (a) direct extrusion (b) indirect extrusion |
direct extrusion |
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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 of the following? (a) zero (b) 0.63 (c) 1.0 (d) 2.72 |
0.63 |
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Which of the following bulk deformation processes are involved in the production of nails for lumber construction? (3)
(a) bar and wire drawing (b) extrusion (c) flashless forging (d) impression-die forging (e) rolling (f) upsetting |
bar and wire drawing, flashless forging, impression-die forging |
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Johnson's formula is associated with which one of the four bulk deformation processes? (a) bar and wire drawing (b) extrusion (c) forging (d) rolling |
extrusion |
