EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 8220100793431
Author: KALPAKJIAN
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 24QLP
Table 15.1 gives temperature ranges for extruding various metals. Describe the possible consequences of extruding at a temperature (a) below and (b) above these ranges.
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Explain the Hot extrusion process with a neat diagram
What is the Forging process? Explain the process including two forged products.
1. A component is designed to be hot forged in an impression die. The projected area of the product is 5800 mm2. During the forging process flashing is formed so that the area including the flash will be 8900 mm2. The part geometry is considered to be simple and the heated work material yields at 92 MPa. Calculate the maximum force required to perform the operation.
2. What are the advantages and disadvantages to forge a product through the open forging process, rather than to machine it from the same material?
Chapter 15 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
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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- QUESTION 3 Extrusion and drawing have numerous application in manufacturing continuous as well as discrete products from a wide variety of metals and alloys. There are three types of extrusion. Please describe and draw the schematic illustration to represent each of them. Question 4 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_forwardNonearrow_forwardWith a neat diagram differentiate the direct and indirect extrusion process. Write any two advantages and applications of extrusion.arrow_forward
- 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_forwardExtrusion is a fundamental shaping process. Describe itarrow_forwardManufacturing methodsarrow_forward
- Question 7 A component is designed to be hot forged in an impression die. The projected area of the product is 5800 mm?. During the forging process flashing is formed so that the area including the flash will be 8900 mm?. The part geometry is considered to be simple and the heated work material yields at 92 MPa. Calculate the maximum force required to perform the operation. 7.1 7.2 What are the advantages and disadvantages to forge a product through the open forging process, rather than to machine it from the same material?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_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_forward
- 1) 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_forwardDescribe the defects found on the injection/ compression moulded parts with different temperatures or time setting. Discuss the possible causes for each case.arrow_forwardDescribe the effect that extrusion has on material properties with examplesarrow_forward
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