Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 15, Problem 34QLP
Explain the advantages of bundle drawing.
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Chapter 15 Solutions
Manufacturing Engineering & 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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- 1. In the manufacture of automotive-body panels from carbon-steel sheet, stretcher strains (Lueders bands) are observed, which detrimentally affect surface finish. How can stretcher strains be eliminated? Explain with appropriate sketches. Also discuss how wrinkles in a deep drawing operation can be eliminated.arrow_forwardIt is proposed to use an axisymmetric drawing operation to reduce the diameter of a cylindrical rod of steel from Do to Do/4. If the steel behaves like a perfectly-plastic material, and there is no redundant deformation or friction in the process, what is the minimum number of drawing stages needed to obtain this reduction?arrow_forwardplease answer to both of these parts of the question, thanks (a) Explain the advantage of corner radii of punch and die in Sheet Metal Drawing Process. (b) Explain the disadvantages of Tube Drawing process in which mandrel is not used.arrow_forward
- In 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_forwardHow can we possibly measure the drawability of sheet metal ?arrow_forwardWrite a detail note on “Tube Drawing with Mandrels”.arrow_forward
- Explain the basic operation of closed-die forging. Use sketches to assist the explanation.arrow_forwardExplain the basic operation of open-die forging. Use sketches to assist the explanation.arrow_forwardExplainthe advantage of corner radii of punch and die in Sheet Metal Drawing Process.arrow_forward
- What is the difference between rotational motion and linear motion, explain this with the drawing.arrow_forward1) A cup-drawing operation is performed in which: The cup's inside diameter = 75 mm and its height = 50 mm. %3D Stock thickness = 3.0 mm. %3D Punch and die radii = 4 mm. Tensile strength = 400 MPa for this sheet metal. %3D (a) Find the required starting blank size (b) Is this drawing operation feasible? (c) Determine the drawing force, and (d) Determine the blank-holder force.arrow_forward4) In the deep drawing of cups, blanks show a tendency to wrinkle up around the periphery (flange). The most likely cause and remedy of the phenomenon are respectively: Buckling due to circumferential compression; Increase blank holder pressure. High blank holder pressure and high friction; Reduce blank holder pressure and apply lubricant. High temperature causing an increase in circumferential length; Apply coolant to blank. Buckling due to circumferential compression; decrease blank holder pressure.arrow_forward
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