Degarmo's Materials And Processes In Manufacturing
13th Edition
ISBN: 9781119492825
Author: Black, J. Temple, Kohser, Ronald A., Author.
Publisher: Wiley,
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Chapter 16, Problem 3P
To determine
The features that have been overlooked in the argument that would tend to favor the press-and- sinter sequence for convectional manufacture.
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GKN Sinter Metals Company pressed iron powders using a compaction pressure of 600 MPa to produced a cylindrical bearing which is 70 cm long and has internal and external diameters of 8 cm and 16 cm, respectively. Determine (a) the most appropriate pressing direction, (b) the required press tonnage to perform this operation, and (c) the final weight of the part if the porosity is 12%, given that the density of iron, ρ = 7.87 g/cm3. Assume shrinkage during sintering can be neglected
In powder processing, a cylinder with a diameter of 2 inches and a height of 10 inches is to be made from fine copper powders. A single-action press is used for compaction. If the average density of the green product is 7 g/cm3 at the bottom half of the cylinder, estimate the compaction pressure at the punch surface. Assume no friction between the powders. The coefficient of friction between particles and containers is 0.2.
Chapter 16 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 16 - What type of product would be considered to be a...Ch. 16 - What were some of the earliest powder metallurgy...Ch. 16 - Prob. 3RQCh. 16 - Why might the term particulate processing be a...Ch. 16 - What are some of the primary market areas for P/M...Ch. 16 - Prob. 6RQCh. 16 - What are the four basic steps that are usually...Ch. 16 - Prob. 8RQCh. 16 - Prob. 9RQCh. 16 - Prob. 10RQ
Ch. 16 - Which of the powder manufacturing processes are...Ch. 16 - Why might the powdered material be heat�treated...Ch. 16 - Prob. 13RQCh. 16 - Prob. 14RQCh. 16 - Prob. 15RQCh. 16 - Prob. 16RQCh. 16 - Prob. 17RQCh. 16 - Prob. 18RQCh. 16 - Prob. 19RQCh. 16 - Prob. 20RQCh. 16 - Prob. 21RQCh. 16 - What is the benefit of a removable die set in a...Ch. 16 - What limits the cross�sectional area of most P/M...Ch. 16 - Prob. 24RQCh. 16 - Prob. 25RQCh. 16 - Prob. 26RQCh. 16 - Prob. 27RQCh. 16 - Prob. 28RQCh. 16 - Prob. 29RQCh. 16 - Prob. 30RQCh. 16 - Prob. 31RQCh. 16 - Prob. 32RQCh. 16 - Prob. 33RQCh. 16 - Prob. 34RQCh. 16 - Prob. 35RQCh. 16 - What types of atmospheres are used during...Ch. 16 - Prob. 37RQCh. 16 - What is the purpose of the sinter brazing process?Ch. 16 - Prob. 39RQCh. 16 - Prob. 40RQCh. 16 - Prob. 41RQCh. 16 - Prob. 42RQCh. 16 - Prob. 43RQCh. 16 - What is canning and decanning, and how do these...Ch. 16 - Prob. 45RQCh. 16 - Prob. 46RQCh. 16 - Prob. 47RQCh. 16 - Prob. 48RQCh. 16 - Prob. 49RQCh. 16 - Prob. 50RQCh. 16 - How is the metal powder used in metal injection...Ch. 16 - Prob. 52RQCh. 16 - Prob. 53RQCh. 16 - Prob. 54RQCh. 16 - Prob. 55RQCh. 16 - Prob. 56RQCh. 16 - Prob. 57RQCh. 16 - Prob. 58RQCh. 16 - Prob. 59RQCh. 16 - Prob. 60RQCh. 16 - Prob. 61RQCh. 16 - Prob. 62RQCh. 16 - Prob. 63RQCh. 16 - Prob. 64RQCh. 16 - Prob. 65RQCh. 16 - Prob. 66RQCh. 16 - Prob. 67RQCh. 16 - Give an example of a product where two or more...Ch. 16 - What are the primary assets or advantages of the...Ch. 16 - Prob. 70RQCh. 16 - Prob. 71RQCh. 16 - Prob. 72RQCh. 16 - Prob. 73RQCh. 16 - Prob. 74RQCh. 16 - Prob. 75RQCh. 16 - Prob. 76RQCh. 16 - Prob. 1PCh. 16 - Prob. 2PCh. 16 - Prob. 3PCh. 16 - Prob. 4PCh. 16 - Prob. 5PCh. 16 - Particulate materials can be made by a variety of...Ch. 16 - Prob. 7PCh. 16 - Briefly discuss the properties and characteristics...Ch. 16 - Based on the size, shape, and reasonable precision...Ch. 16 - Prob. 1.8CSCh. 16 - Prob. 1.9CSCh. 16 - Prob. 1.10CSCh. 16 - Prob. 2.1CSCh. 16 - Prob. 2.3CS
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- QUESTION 1 (a) Powder Metallurgy (PM) enables the processing of materials with very high melting points, including refractory metals such as tungsten, molybdenum and tantalum. Such metals are very difficult to produce by melting and casting and are often very brittle in the cast state. As a manufacturing engineer, state and explain at least SIX (6) limitations of powder metallurgy that is not applicable in particular engineering industries. In a case where you were assigned to use powder metallurgy in metal forming, justify at least THREE (3) PM requirements. (b) A coil of sheet metal is placed in a furnace and annealed in order to improve its ductility. Nonetheless, it is found that the sheet metal has a lower limiting drawing (LDR) than it had before the annealing process. Describe the meaning of LDR and explain the reasons for this behaviour by referring to the microstructure and materials' properties point of view for different types of materials. In addition, discuss the process…arrow_forwardIf your aim is to obtain enhanced densification rates and accelerated grain growth during sintering, which sintering method would you prefer and why?What are the stages of this sintering method?arrow_forwardManufacturingarrow_forward
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