Manufacturing Engineering And Technology
7th Edition
ISBN: 9789810694067
Author: Stephen R. Schmid (author) Serope Kalpakjian (author)
Publisher: Pearson Education Orphans
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Textbook Question
Chapter 15, Problem 30QLP
How would you prepare the end of a wire in order to be able to feed it through a die so that a drawing operation can commence?
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A drawing operation is used to form a cylindrical cup with inside diameter of 75 mm and height of 50 mm. The starting blank size is 140 mm and the stock thickness is 2.4 mm.
Based on the data, is the operation feasible?
what is Deep Drawing?
The quantity of work that can be done in the die may be used as a defining feature of forging processes. Please identify the following three broad classes that this sorting generates.
Chapter 15 Solutions
Manufacturing Engineering And Technology
Ch. 15 - How does extrusion differ from rolling and...Ch. 15 - Explain the difference between extrusion and...Ch. 15 - What is a spider die? What is it used for?Ch. 15 - Why are wires sometimes drawn in bundles?Ch. 15 - What is a dead-metal zone?Ch. 15 - Define the terms (a) cladding, (b) dummy block,...Ch. 15 - Why is glass a good lubricant in hot extrusion?Ch. 15 - What types of defects may occur in (a) extrusion...Ch. 15 - Describe the difference between direct and reverse...Ch. 15 - What is land? What is its function in a die?
Ch. 15 - How are tubes extruded? Can they also be drawn?...Ch. 15 - Prob. 12RQCh. 15 - What is the difference between piping and...Ch. 15 - What is impact extrusion?Ch. 15 - What is the pipe defect in extrusion?Ch. 15 - List the similarities and differences between...Ch. 15 - Explain why extrusion is a batch, or...Ch. 15 - The extrusion ratio, die geometry, extrusion...Ch. 15 - Explain why cold extrusion is an important...Ch. 15 - What is the function of a stripper plate in impact...Ch. 15 - Explain the different ways by which changing the...Ch. 15 - Glass is a good lubricant in hot extrusion. Would...Ch. 15 - How would you go about avoiding center-cracking...Ch. 15 - Table 15.1 gives temperature ranges for extruding...Ch. 15 - Will the force in direct extrusion vary as the...Ch. 15 - Comment on the significance of metal flow patterns...Ch. 15 - In which applications could you use the type of...Ch. 15 - What is the purpose of the land in a drawing die?...Ch. 15 - Can spur gears be made by (a) drawing and (b)...Ch. 15 - How would you prepare the end of a wire in order...Ch. 15 - What is the purpose of a dummy block in extrusion?...Ch. 15 - Describe your observations concerning Fig. 15.9.Ch. 15 - Occasionally, steel wire drawing will take place...Ch. 15 - Explain the advantages of bundle drawing.Ch. 15 - Under what circumstances would backward extrusion...Ch. 15 - Why is lubrication detrimental in extrusion with a...Ch. 15 - In hydrostatic extrusion, complex seals are used...Ch. 15 - Describe the purpose of a container liner in...Ch. 15 - Estimate the force required in extruding 7030...Ch. 15 - Assuming an ideal drawing process, what is the...Ch. 15 - Prob. 41QTPCh. 15 - Calculate the extrusion force for a round billet...Ch. 15 - Prob. 43QTPCh. 15 - A round wire made of a perfectly plastic material...Ch. 15 - Assume that the summary to this chapter is...Ch. 15 - Prob. 47SDPCh. 15 - Figure 15.2 shows examples of discrete parts that...Ch. 15 - The parts shown in Fig. 15.2 are economically...Ch. 15 - Survey the technical literature, and explain how...Ch. 15 - Prob. 51SDPCh. 15 - List the processes that are suitable for producing...
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- Both extrusion and bar drawing processes can be used to reduce the cross section. What can be the basic differences between extrusion and bar drawing processes? Also discuss briefly why must the drawing stress never exceed the yield strength of the work metal?arrow_forwardIf it is desired to reduce the power required for the rolling operation of part (b), what modifications to the process can be made? (The dimensions of the initial and final rolled sheet cannot be altered.arrow_forwardHow long does the extrusion process take?arrow_forward
- Question: 2 a. Distinguish between roll bending and roll forming.b. What are some of the simple measures used to assess the feasibility of a proposed cup drawingoperation?c. Compare spinning over the press work for sheet metal products.d. Identify a major technical problem in tube bending.arrow_forwardOne way to describe forging processes is by the amount of work that can be done in the die. Based on this grouping, what are the three main types?arrow_forwardHow to study rolling process and its parameters?arrow_forward
- L) Friction between .................. and .... ........... in direct extrusion more forcerequires.m) The method of sheet forming in which springback is prevented is named ..........arrow_forwardWhat is the working principles of Sheet Metal Rolling Machine?arrow_forwardIn a wire drawing operation diameter of a steel wire is reduced from 10 mm to 8 mm. The mean flow stress of the material is 400 MPa.what is the ideal force required for drawing (ignoring friction and redundant work).?arrow_forward
- How long does the Forging process take?arrow_forwardForging processes may be characterized by die work limitation. This categorization yields three basic types.arrow_forward1) Selection of die in forging process is very important in order to control the quality of the product. List four general requirements for die material.arrow_forward
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