Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 16, Problem 7RQ
List the properties of materials that influence spring-back. Explain why and how they do so.
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Explain the methods of reducing or eliminating springback in bending with proper diagram.
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Chapter 16 Solutions
Manufacturing Engineering & Technology
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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- What is the general equation for bending?arrow_forwardAre the wedge grips suitable for tests of brittle materials? Explainarrow_forwardLow carbon steel plate that is 1.65 inches thick is to be rolled down to 1.3 inches in a single pass. The plate gets 4% wider as the thickness gets smaller. The steel plate has a 174 MPa yield strength and a 290 MPa tensile strength. The plate enters at a pace of 0.6 inches per minute. The rotating speed is 49.0 rev/min, and the roll radius is 12.8 inches. Calculate: a) Determine the minimum required coefficient of friction that would make this rolling operation possible b) exit velocity of the plate (m/min) c) forward slip (m/min) Please submit the final answers in 2 decimal placesarrow_forward
- Explain what is the effective-slenderness ratio?arrow_forwardDraw and explain drop forging process. Write any three common forging materials and mention its applications.arrow_forwardPlot the Rf/Ri as a function of initial bend radius, Ri in bending for (a) 5052-O aluminum; (b) 5052-H34 aluminum; (c) C24000 brass; and (d) AISI 304 stainless steel. (e) Explain what you get from the plot 6arrow_forward
- What are motion screws? Where are motion screws used? Static of motion screws Explain how strength calculations are made under stresses.arrow_forwardExplain the properties and applications of High Speed Steelarrow_forwardWrite at least Three assumptions in the Theory of simple Bending. What do you mean by Fatigue Ratioarrow_forward
- Describe the nature of the load and strength distributions in four practical engineering situations (use sketches to show the shapes and locations of distributions). Comment on each situation in relations to the predictability of failure and reliability, and in relation to the methods that can be used to reduce the probabilities of failure.arrow_forwardA solid, cylindrical workpiece made of 5052-O aluminum that is 87 mm high and 65.878 mm radius and is to be reduced in height by 30% using forging. The coefficient of friction is 0.168. 5052-O yield stress is 98.21 MPa, strain hardening exponent is 0.128 , and strength coefficient is 193.74 MPa. Determine the forging force (MN) at the end of the stroke when the height has been reduced by 30%.arrow_forwardWith suitable sketches of the relationship of friction force and applied load, briefly explain the concept of friction force.arrow_forward
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