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In a wire drawing operation, why must the drawing stress never exceed the yield strength of the work metal?
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Although the workpiece in a wire drawing operation is obviously subjected to tensile stresses, how do compressive stresses also play a role in the process?
What is wire drawing and bar drawing?
What does the centerburst defect in extrusion have in common with the roll piercing process?
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Why is friction a factor in determining the ram force in direct extrusion but not a factor in indirect extrusion?
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Name some products that are produced by extrusion.
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Distinguish between direct and indirect extrusion
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What is extrusion?
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What is isothermal forging?
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What are the two basic types of forging equipment?
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What is a trimming operation in the context of impression die forging?
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Why is flash desirable in impression die forging?
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One way to classify forging operations is by the degree to which the work is constrained in the die. By this classification, name the three basic types.
What is forging?
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Besides flat rolling and shape rolling, identify some additional bulk forming processes that use rolls to effect the deformation
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What is a reversing mill in rolling?
What is a two-high rolling mill?
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Identify some of the ways in which force in flat rolling can be reduced.
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What is sticking in a hot rolling operation?
What is draft in a rolling operation?
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List some of the products produced on a rolling mill.
In rolling of steel, what are the differences between a bloom, a slab, and a billet?
What is rolling in the context of the bulk deformation processes?
Name the four basic bulk deformation processes.
What are the reasons why the bulk deformation processes are important commercially and technologically?
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