Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 17, Problem 44SDP
To determine
Make sketches of PM products in which density variations (see Fig. 17.12) would be desirable. Explain why interms of the functions of these parts.
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Chapter 17 Solutions
Manufacturing Engineering & Technology
Ch. 17 - Describe briefly the production steps involved in...Ch. 17 - Name the various methods of powder production and...Ch. 17 - Explain why metal powders may be blended.Ch. 17 - Describe the methods used in metal powder...Ch. 17 - What is isostatic pressing? How is it different...Ch. 17 - What hazards are involved in PM processing?...Ch. 17 - Describe what occurs to metal powders during...Ch. 17 - Prob. 8RQCh. 17 - Why might secondary and finishing operations be...Ch. 17 - Prob. 10RQ
Ch. 17 - Prob. 11RQCh. 17 - Prob. 12RQCh. 17 - Prob. 13RQCh. 17 - What is screening of metal powders? Why is it...Ch. 17 - Why are protective atmospheres necessary in...Ch. 17 - Why is there density variation in the compacting...Ch. 17 - What is the magnitude of the stresses and forces...Ch. 17 - List the similarities and differences of forging...Ch. 17 - Give some reasons that powder-injection molding is...Ch. 17 - How does the equipment used for powder compaction...Ch. 17 - Explain why the mechanical and physical properties...Ch. 17 - What are the effects of the different shapes and...Ch. 17 - Describe the relative advantages and limitations...Ch. 17 - How different, if any, are the requirements for...Ch. 17 - The powder metallurgy process can be competitive...Ch. 17 - What are the reasons for the shapes of the shown...Ch. 17 - Should green compacts be brought up to the...Ch. 17 - Because they undergo special processing, metal...Ch. 17 - In Fig. 17.12, it can be seen that the pressure is...Ch. 17 - Why do the compacting pressure and the sintering...Ch. 17 - What will be stronger: a blend of stainless steel...Ch. 17 - Name the various methods of powder production and...Ch. 17 - Estimate the maximum tonnage required to compact a...Ch. 17 - Refer to Fig. 17.11a. What should be the volume of...Ch. 17 - Determine the shape factors for (a) a cylinder...Ch. 17 - Estimate the number of particles in a 500-g sample...Ch. 17 - Prob. 37QTPCh. 17 - A coarse copper powder is compacted in a...Ch. 17 - A gear is to be manufactured from iron powders. It...Ch. 17 - What volume of powder is needed to make the gear...Ch. 17 - The axisymmetric part shown in Fig. P17.41 is to...Ch. 17 - Prepare an illustration similar to Fig. 13.1,...Ch. 17 - Prob. 44SDPCh. 17 - Compare the design considerations for PM products...Ch. 17 - Prob. 46SDPCh. 17 - Prob. 47SDPCh. 17 - Using the Internet, locate suppliers of metal...Ch. 17 - Explain why powder metal parts are commonly used...Ch. 17 - Prob. 50SDPCh. 17 - Describe how the information given in Fig. 17.15...Ch. 17 - It was stated that, in the process shown in Fig....Ch. 17 - Prob. 53SDPCh. 17 - The axisymmetric parts shown in Fig. P17.54 are to...Ch. 17 - Assume you are working in technical sales. What...
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- QUESTION 1 (a) Powder Metallurgy (PM) has become competitive with processes such as casting, forging and machining, particularly for complex parts made of high strength and hard alloys. Compare the design considerations for products made of powder metallurgy, casting and forging process. Evaluate your observation. (b) Products made of sheet metals can be easily found around us. Identify some of the products in your automobile which are made from sheet metal, and discuss the process or combination of processes required to produce such products.arrow_forwardShould green compacts be brought up to the sintering temperature slowly or rapidly? Explain your reasoning.arrow_forwardBriefly Explain the properties of polymer that is related to crystallinity.arrow_forward
- In 2018, 25% of produced flat glass were recycled back as a raw material in the production of flat glass as it yielded sustainable impacts such as the reduction of energy requirement to heat up the furnace since the mixture will melt easily. In your opinion, can other types of glass wastes (eg. tempered glass, glass bottles, etc) be used as a raw material in the production of flat glass. Justify your answer by providing references.arrow_forwardFor a powder binding process that mixes a 3:1 volume ratio mixture of semi-crystalline polyethylene powder with a density of 0.900 g/cm³ and crystalline polyethylene powder, what is the percent crystallinity of the manufactured parts? (The density of polyethylene in its amorphous and crystalline states is 0.870 g/cm³ and 0.998 g/cm³ respectively)arrow_forward"The tensile modulus of a given polymer increases as its crystallinity increases" Is this statement True or False? Provide an argument with a simple drawing to support your answer.arrow_forward
- Regarding amorphous plastics, explain why they tend to have higher tensile strength when deformed compared to when not. please include an illustrationarrow_forward1) What types of products are made using a spider-mandrel die? Why can lubricants not be used in spider-mandrel extrusion? 2) Make a survey of various sports equipment and identify the components made of composite materials. Explain the reason for and the advantages of using composites in these specific applications.arrow_forwardA Silicon Carbide powder has an internal energy of 3 X 108 J/m³, a surface tension of 1.2 J/m², and a total energy of 2.6 X 10-¹5 J. What is the smallest diameter that this powder may be ground without agglomerating? (show your work)arrow_forward
- For a powder binding process that mixes a 1:2 volume ratio mixture of semi-crystalline polyethylene powder with a density of 0.900 g/cm3 andcrystalline polyethylene powder, what is the percent crystallinity of the manufactured parts? (The density of polyethylene in its amorphous andcrystalline states is 0.870 g/cm3 and 0.998 g/cm3 respectively)(This question has only one correct answer)% Crystallinity = 55.45%% Crystallinity = 65.50%% Crystallinity = 76.99%% Crystallinity = 82.30%% Crystallinity = 57.25%arrow_forwardLenora Manufacturing company is planning to market enamel cups. After conducting extensive market surveys, the research department provides the following estimates: a monthly demand of 200 cups at a price of $16 per cup and a monthly demand of 300 cups at a price of $14 per cup. The financial department estimates that monthly fixed costs will be $1,400 and variable costs (cost per unit) will be $4. (a) Assume that the relationship between price p and demand x is linear. Use the research department's estimates to determine the Lenora's price-demand function, p(x). (b) What would be the price per cup for an order of 260 units? (c) Find the revenue function, R(x). (d) Find the maximum revenue that the company can realize, stating the number of books that must be sold to obtain this highest revenue. (e) Assume that the cost function is linear. Use the financial department's estimates to find the cost function,C(x). (f) Find the profit function, P(x). (g) Determine, algebraically, the…arrow_forwardYour die setter brings you a print of a cylinder with a 2 inch outside diameter and a 1.75 inch inside diameter. The cylinder is to be molded of iron powder with a green density of 6.8 g/cc. The apparent density of the powder is 2.9 g/cc. What is the die fill if the green part is to have a height of 2.5 inches? (show your work)arrow_forward
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