EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 8220100793431
Author: KALPAKJIAN
Publisher: PEARSON
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Textbook Question
Chapter 16, Problem 1RQ
How does sheet-metal forming differ from rolling, forging, and extrusion?
Expert Solution & Answer
To determine
How does sheet-metal forming differ from rolling, forging, and extrusion?
Explanation of Solution
The major difference between sheet metal forming and rolling, forging and extrusion are:
| Sheet metal forming | Rolling | Forging | Extrusion |
| It can be performed in room temperature | Can be performed May or may not be at room temperature | Can be performed above the room temperature | Can be Performed above the room temperature |
| Grain size of material do not improve | Grain size will be improved | Grain size will be improved | Grain size may or may not improved |
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motor supplies 200 kW at 6 Hz to flange A of the shaft shown in Figure. Gear B transfers 125 W of power to operating machinery in the factory, and the remaining power in the shaft is mansferred by gear D. Shafts (1) and (2) are solid aluminum (G = 28 GPa) shafts that have the same diameter and an allowable shear stress of t= 40 MPa. Shaft (3) is a solid steel (G = 80 GPa) shaft with an allowable shear stress of t = 55 MPa. Determine:
a) the minimum permissible diameter for aluminum shafts (1) and (2)
b) the minimum permissible diameter for steel shaft (3).
c) the rotation angle of gear D with respect to flange A if the shafts have the minimum permissible diameters as determined in (a) and (b).
Chapter 16 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 16 - How does sheet-metal forming differ from rolling,...Ch. 16 - What causes burrs? How can they be reduced or...Ch. 16 - Prob. 3RQCh. 16 - Describe the difference between compound,...Ch. 16 - Describe the characteristics of sheet metals that...Ch. 16 - Describe the features of forming-limit diagrams...Ch. 16 - List the properties of materials that influence...Ch. 16 - Give one specific application for each of the...Ch. 16 - Why do tubes buckle when bent? What is the effect...Ch. 16 - Define normal anisotropy, and explain why it is...
Ch. 16 - Describe earing and why it occurs.Ch. 16 - What are the advantages of rubber forming? Which...Ch. 16 - Explain the difference between deep drawing and...Ch. 16 - How is roll forming fundamentally different from...Ch. 16 - What is nesting? What is its significance?Ch. 16 - Describe the differences between compound,...Ch. 16 - What is microforming?Ch. 16 - Explain the advantages of superplastic forming.Ch. 16 - What is hot stamping? For what materials is it...Ch. 16 - What is springback? What is negative springback?Ch. 16 - Explain the differences that you have observed...Ch. 16 - Take any three topics from Chapter 2, and, with...Ch. 16 - Do the same as for Problem 16.22, but for Chapter...Ch. 16 - Identify the material and process variables that...Ch. 16 - Explain why springback in bending depends on yield...Ch. 16 - Explain why cupping tests may not predict well the...Ch. 16 - Identify the factors that influence the...Ch. 16 - Why are the beads in Fig. 16.36b placed in those...Ch. 16 - A general rule for dimensional relationships for...Ch. 16 - Section 16.2 stated that the punch stripping force...Ch. 16 - Is it possible to have ironing take place in an...Ch. 16 - Note the roughness of the periphery of the flanged...Ch. 16 - What recommendations would you make in order to...Ch. 16 - It has been stated that the quality of the sheared...Ch. 16 - Give several specific examples from this chapter...Ch. 16 - As you can see, some of the operations described...Ch. 16 - Through changes in clamping or die design, it is...Ch. 16 - How would you produce the part shown in Fig....Ch. 16 - It has been stated that the thicker the sheet...Ch. 16 - Prob. 41QTPCh. 16 - Calculate the value of R in Problem 16.41. Will...Ch. 16 - Estimate the limiting drawing ratio for the...Ch. 16 - Using Eq. (16.15) and the K value for TNT, plot...Ch. 16 - Section 16.5 states that the k values in bend...Ch. 16 - For explosive forming, calculate the peak pressure...Ch. 16 - Measure the respective areas of the solid outlines...Ch. 16 - Plot Eq. (16.6) in terms of the elastic modulus,...Ch. 16 - What is the minimum bend radius for a 1.0-mm-thick...Ch. 16 - Survey the technical literature and explain the...Ch. 16 - Using the data in Table 16.3 and referring to Eq....Ch. 16 - What is the force required to punch a square hole...Ch. 16 - In Case Study 16.2, it was stated that the reason...Ch. 16 - A cup is being drawn from a sheet metal that has a...Ch. 16 - Prob. 55QTPCh. 16 - Figure P16.57 shows a parabolic profile that will...Ch. 16 - Prob. 59SDPCh. 16 - Consider several shapes to be blanked from a large...Ch. 16 - Prob. 61SDPCh. 16 - Many axisymmetric missile bodies are made by...Ch. 16 - Metal cans are either two-piece (in which the...Ch. 16 - The design shown in Fig. P16.65 is proposed for a...Ch. 16 - Suggest consumer-product designs that could...Ch. 16 - How would you produce the part shown in Fig. 16.44...Ch. 16 - Using a ball-peen hammer, strike the surface of...Ch. 16 - Inspect a common paper punch and observe the shape...Ch. 16 - Obtain an aluminum beverage can and slit it in...Ch. 16 - Prob. 71SDPCh. 16 - Prob. 73SDPCh. 16 - On the basis of experiments, it has been suggested...Ch. 16 - Design a box that will contain a 4-in. 6-in. ...Ch. 16 - Repeat Problem 16.77, but design the box from a...
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