Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 13, Problem 23QLP
Make a list of parts that can be made by (a) shape rolling and (b) thread rolling.
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Explain the function of backing rolls in Four High Rolling Mill and Cluster Rolling Mill.
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Chapter 13 Solutions
Manufacturing Engineering & Technology
Ch. 13 - What is the difference between a plate and a...Ch. 13 - Define roll gap, neutral point, and draft.Ch. 13 - What factors contribute to spreading in flat...Ch. 13 - What is forward slip? Why is it important?Ch. 13 - Describe the types of deflections that rolls...Ch. 13 - Describe the difference between a bloom, a slab,...Ch. 13 - Why may roller leveling be a necessary operation?Ch. 13 - List the defects commonly observed in flat...Ch. 13 - What are the advantages of tandem rolling? Pack...Ch. 13 - How are seamless tubes produced?
Ch. 13 - Why is the surface finish of a rolled product...Ch. 13 - What is a Sendzimir mill? What are its important...Ch. 13 - What is the Mannesmann process? How is it...Ch. 13 - Describe ring rolling. Is there a neutral plane in...Ch. 13 - How is back tension generated?Ch. 13 - Explain why the rolling process was invented and...Ch. 13 - Flat rolling reduces the thickness of plates and...Ch. 13 - Explain how the residual stress patterns shown in...Ch. 13 - Explain whether it would be practical to apply the...Ch. 13 - Describe the factors that influence the magnitude...Ch. 13 - Explain how you would go about applying front and...Ch. 13 - What typically is done to make sure that the...Ch. 13 - Make a list of parts that can be made by (a) shape...Ch. 13 - Describe the methods by which roll flattening can...Ch. 13 - It was stated that spreading in flat rolling...Ch. 13 - Flat rolling can be carried out by front tension...Ch. 13 - Explain the consequence of applying too high a...Ch. 13 - Note in Fig. 13.3f that the driven rolls (powered...Ch. 13 - Describe the importance of controlling roll...Ch. 13 - In Fig. 13.9a, if you remove the top compressive...Ch. 13 - Name several products that can be made by each of...Ch. 13 - List the possible consequences of rolling at (a)...Ch. 13 - It is known that in thread rolling, as illustrated...Ch. 13 - If a rolling mill encounters chatter, what process...Ch. 13 - Can the forward slip ever become negative? Why or...Ch. 13 - In Example 13.1, calculate the roll force and the...Ch. 13 - Calculate the individual drafts in each of the...Ch. 13 - Estimate the roll force, F, and the torque for an...Ch. 13 - A rolling operation takes place under the...Ch. 13 - Estimate the roll force and power for annealed...Ch. 13 - A flat-rolling operation is being carried out...Ch. 13 - A simple sketch of a four-high mill stand is shown...Ch. 13 - Obtain a piece of soft, round rubber eraser, such...Ch. 13 - If you repeat the experiment in Problem 13.45 with...Ch. 13 - Design a set of rolls to produce cross-sections...Ch. 13 - Design an experimental procedure for determining...Ch. 13 - Derive an expression for the thickest workpiece...
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- A 10 mm thick plate is rolled to 7 mm thick in a rolling mill using 1000 mm diameter rigid rolls. The neutral point is located at an angle of 0.3 times the bite angle from the exit. What will be the thickness of the plate at the neutral point.arrow_forwardExplain steps of rolling process in forming process?arrow_forwardWhich of the following operations are closely related to open-die forging: Select one: a. Coining b. Hobbing c. Upsetting d. Flashless forgingarrow_forward
- 4) Make a summary of the types of defects found in sheet-metal forming processes, and include brief comments on the reason(s) for each defect.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_forwardCompare hot and cold rolling products in terms of surface quality, mechanical properties, force required for rolling.arrow_forward
- WHAT ARE THE 5 USES/APPLICATIONS OF ROLLING CONES AND ROLLING CYLINDERS?arrow_forwardA 40 mm thick plate made from 410 grade stainless steel is to be reduced to 34 mm in one pass in a rolling operation. As the thickness is reduced, the plate widens by 3%. The entrance speed of the plate is 13 m/min and the roll radius is 310 mm with a rotational speed of 30 rpm. To do 5.1 If the final width of the sheet is 200 mm, calculate the required roll force. 5.2. Explain what is roll flattening, its effects and how it can be reduced.arrow_forwardIf coefficient of friction µ in a rolling process is 0.5 and radius of roller is 1,000 mm, what is the maximum reduction or draft possible?arrow_forward
- Write a Brief Application of Pure Rolling Bodies in The Mechanical Systems?arrow_forward3) What are the reasons for developing forming limit diagrams (FLD)? Explain its use.arrow_forwardQuestion: 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_forward
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