DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 19, Problem 74RQ
To determine
The combination of forming and hardening process in hot stamping or press hardening operation.
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1. What types of drawing process?
2. What are the Defects in cold drawn products?
3. What advantages of hot extrusion?
4. What disadvantages of cold extrusion?
5. What is the principle of the formation process?
6. Rolling is classified according to the temperature of the metal rolled:
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.
Chapter 19 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 19 - What distinguishes sheet forming from bulk...Ch. 19 - What is a definition of shearing?Ch. 19 - Prob. 3RQCh. 19 - What measures can be employed to improve the...Ch. 19 - How does fineblanking create shearing in a...Ch. 19 - Prob. 6RQCh. 19 - What types of cuts are made by squaring shears?Ch. 19 - Why might a long shearing cut be made in a...Ch. 19 - What is a slitting operation?Ch. 19 - What is the difference between piercing and...
Ch. 19 - Prob. 11RQCh. 19 - Prob. 12RQCh. 19 - Prob. 13RQCh. 19 - Prob. 14RQCh. 19 - Prob. 15RQCh. 19 - Prob. 16RQCh. 19 - What is the benefit of making dies as a multipiece...Ch. 19 - Prob. 18RQCh. 19 - Prob. 19RQCh. 19 - Prob. 20RQCh. 19 - Prob. 21RQCh. 19 - Prob. 22RQCh. 19 - When making bends in sheet metal, what is the...Ch. 19 - Prob. 24RQCh. 19 - Prob. 25RQCh. 19 - Why does a metal usually become thinner in the...Ch. 19 - Prob. 27RQCh. 19 - Prob. 28RQCh. 19 - Prob. 29RQCh. 19 - What types of operations can be performed on a...Ch. 19 - Prob. 31RQCh. 19 - Prob. 32RQCh. 19 - Prob. 33RQCh. 19 - Prob. 34RQCh. 19 - What is the primary benefit of incorporating a...Ch. 19 - Prob. 36RQCh. 19 - What is the benefit of using a urethane (rubber)...Ch. 19 - What is the objective of the roll bending process?Ch. 19 - What is the role of the form block in draw bending...Ch. 19 - Prob. 40RQCh. 19 - Prob. 41RQCh. 19 - Prob. 42RQCh. 19 - Prob. 43RQCh. 19 - Prob. 44RQCh. 19 - Prob. 45RQCh. 19 - Prob. 46RQCh. 19 - Prob. 47RQCh. 19 - Prob. 48RQCh. 19 - Prob. 49RQCh. 19 - Prob. 50RQCh. 19 - Prob. 51RQCh. 19 - Prob. 52RQCh. 19 - Prob. 53RQCh. 19 - What is the distinction between shallow drawing...Ch. 19 - What is the function of the pressure ring or...Ch. 19 - Prob. 56RQCh. 19 - Prob. 57RQCh. 19 - Prob. 58RQCh. 19 - Prob. 59RQCh. 19 - Prob. 60RQCh. 19 - Prob. 61RQCh. 19 - Prob. 62RQCh. 19 - Prob. 63RQCh. 19 - Prob. 64RQCh. 19 - Prob. 65RQCh. 19 - Prob. 66RQCh. 19 - Prob. 67RQCh. 19 - Prob. 68RQCh. 19 - Prob. 69RQCh. 19 - Prob. 70RQCh. 19 - Prob. 71RQCh. 19 - Prob. 72RQCh. 19 - Prob. 73RQCh. 19 - Prob. 74RQCh. 19 - Prob. 75RQCh. 19 - What are some of the basic methods that have been...Ch. 19 - Prob. 77RQCh. 19 - Prob. 78RQCh. 19 - Prob. 79RQCh. 19 - Prob. 80RQCh. 19 - Prob. 81RQCh. 19 - What properties from a uniaxial tensile test can...Ch. 19 - How is the formability in biaxial tension...Ch. 19 - What is normal anisotropy, R and planar...Ch. 19 - Prob. 85RQCh. 19 - Prob. 86RQCh. 19 - Prob. 87RQCh. 19 - Prob. 88RQCh. 19 - What two hot�forming operations can be used to...Ch. 19 - Prob. 90RQCh. 19 - What are the primary assets and limitations of...Ch. 19 - Prob. 92RQCh. 19 - Prob. 93RQCh. 19 - What are some of the attractive features of...Ch. 19 - What are some of the common types of press frames?Ch. 19 - What are some features that may be included into a...Ch. 19 - Prob. 97RQCh. 19 - Prob. 98RQCh. 19 - Prob. 99RQCh. 19 - Prob. 100RQCh. 19 - The maximum punch force in blanking can be...Ch. 19 - Prob. 2PCh. 19 - Prob. 3PCh. 19 - What are some of the techniques for minimizing the...Ch. 19 - Prob. 5PCh. 19 - Prob. 6PCh. 19 - Prob. 1CSCh. 19 - Prob. 2CSCh. 19 - Prob. 3CSCh. 19 - Polymeric materials have characteristically low...Ch. 19 - If adhesive bonding is specified as a replacement...Ch. 19 - Which of the material/process options do you feel...Ch. 19 - Prob. 7CSCh. 19 - Prob. 8CS
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- please quickarrow_forwardWhich would you recommed based on your understanding and explain on it each of isa. hot forging and heat treating a workpiece orb. cold forging it and relying upon strain hardening for strengthening? Manufacturing Processarrow_forwardWhich three of the following are basic bulk deformation processes in metal forming: forging bar drawing extrusion stamping blanking deep drawingarrow_forward
- Name the four basic bulk deformation processes.arrow_forwardWhat is isothermal forming?arrow_forward3XPL@!N THE PROCESS @ND PROVIDE EXAMPLES FORMING OPERATIONS 1. Forging is mechanically working or deforming a single piece of a usually hot metal; this may be accomplished by the application of successive blows or by continuous squeezing. 2. Rolling, the most widely used deformation process, consists of passing a piece of metal between two rolls; a reduction in thickness results from compressive stresses exerted by the rolls. 3. Extrusion, a bar of metal is forced through a die orifice by a compressive force that is applied to a ram; the extruded piece that emerges has the desired shape and a reduced cross-sectional area. 4. Drawing is the pulling of a metal piece through a die having a tapered bore by means of a tensile force that is applied on the exit side.arrow_forward
- When deforming metal at room temperature, what kind of forging will you prefer?arrow_forwardBoth extrusion and bar drawing processes can be used to reduce the cross section. What can be the basic differences between extrusion and bar drawing processes? Also discuss briefly why must the drawing stress never exceed the yield strength of the work metal?arrow_forwardWhy must press forging often employ heated dies?arrow_forward
- (USCS units) A part is hot forged in an impression die. The projected area of the part, including flash, = 17.3 in2. After trimming, the part has a projected area of 12.5 in2. Part geometry is complex. As heated the work metal yields at 13,000 lb/in2and no strain hardening occurs. At room temperature, the metal yields at 30,000 lb/in2. Determine the maximum force required to perform the forging operation. (use table 18.1 for Kf )arrow_forwardName some products that can be manufactured by shape rolling and thread rollingarrow_forwardIdentify the type of forming process in which the material is required to pass repeatedly through dies of different size. a. Drop forging process b. Wire drawing process c. Rolling process d. Extrusion procesarrow_forward
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