EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 9780100793439
Author: KALPAKJIAN
Publisher: YUZU
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Textbook Question
Chapter 19, Problem 9RQ
Explain the difference between potting and encapsulation.
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Explain why is there a need for novel drying techniques?
Sintering of ceramics may exhibit the following characteristics:
Select one or more:
a. It involves the high-pressure deformation of a pre-existing shape into a new form
b. The total surface area (including internal area) decreases
C.
Pores become smaller
d. Pores become larger on average
Parts of the material may become amorphous
Of. The surface energy of the system increases
e.
Good wetting of the solid by the liquid is a fundamental requirement for liquid phase sintering. Answer the following questions.
Calculate the dihedtal angle for a ratio of the interfacial energies Yss/ Ysl equal to 1.732 at a particular sintering temperature. How would you describe the microstructure based on your calculation ?
Chapter 19 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 19 - What are the forms of raw materials for processing...Ch. 19 - What is extrusion? What products are produced by...Ch. 19 - Describe the features of an extruder screw and...Ch. 19 - How are injection-molding machines rated?Ch. 19 - What is (a) a parison, (b) a plastisol, and (c) a...Ch. 19 - How is thin plastic film produced?Ch. 19 - List several common products that can be made by...Ch. 19 - What similarities and differences are there...Ch. 19 - Explain the difference between potting and...Ch. 19 - What is thermoforming?
Ch. 19 - Describe runner, gate, sprue, and well.Ch. 19 - Describe the advantages of cold-forming plastics...Ch. 19 - What are the characteristics of filament-wound...Ch. 19 - Describe the methods that can be used to make...Ch. 19 - What is pultrusion? Pulforming?Ch. 19 - How are very thin plastic film produced?Ch. 19 - What process is used to make foam drinking cups?Ch. 19 - If a polymer is in the form of a thin sheet, is it...Ch. 19 - How are polymer fibers made? Why are they much...Ch. 19 - What are the advantages of coextrusion?Ch. 19 - Explain how latex rubber gloves are made.Ch. 19 - Describe the features of a screw extruder...Ch. 19 - Explain why injection molding is capable of...Ch. 19 - Prob. 24QLPCh. 19 - Explain the reasons that some plastic-forming...Ch. 19 - Describe the problems involved in recycling...Ch. 19 - Can thermosetting plastics be used in injection...Ch. 19 - Inspect some plastic containers, such as those...Ch. 19 - An injection-molded nylon gear is found to contain...Ch. 19 - Explain why operations such as blow molding and...Ch. 19 - Prob. 31QLPCh. 19 - Typical production rates are given in Table 19.2....Ch. 19 - What determines the cycle time for (a) injection...Ch. 19 - Does the pull-in defect (sink marks) shown in Fig....Ch. 19 - What determines the intervals at which the...Ch. 19 - Identify processes that would be suitable for...Ch. 19 - Identify processes that are capable of producing...Ch. 19 - Inspect several electrical components, such as...Ch. 19 - Inspect several similar products that are made of...Ch. 19 - What are the advantages of using whiskers a...Ch. 19 - Construct a table that lists the main...Ch. 19 - Estimate the die-clamping force required for...Ch. 19 - A 2-Iitcr plastic beverage bottle is made by blow...Ch. 19 - Consider a Styrofoam drinking cup. Measure the...Ch. 19 - In Fig. 19.2, what flight angle, , should be used...Ch. 19 - Make a survey of a variety of sports equipment,...Ch. 19 - Explain the design considerations involved in...Ch. 19 - Give examples of several parts suitable for insert...Ch. 19 - Give other examples of design modifications in...Ch. 19 - With specific examples, discuss the design issues...Ch. 19 - Die swell in extrusion is radially uniform for...Ch. 19 - Inspect various plastic components in a typical...Ch. 19 - It is well known that plastic forks, spoons, and...Ch. 19 - Prob. 55SDPCh. 19 - Make a survey of the technical literature, and...Ch. 19 - Prob. 57SDPCh. 19 - Prob. 58SDPCh. 19 - Prob. 59SDPCh. 19 - Examine some common and colorful plastic poker...Ch. 19 - Obtain different styles of toothpaste tubes,...Ch. 19 - By incorporating small amounts of blowing agent,...
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- What means product quality ? What characristics does the term product quality include ? 2 - what steps are included in the molding process, list them ?arrow_forwardA thin steel disk of an oil separator of 100mm outside diameter is shrunk onto a solid steel shaft of 20mm diameter. The system is to be designed to make sure the disc does not become loose at speeds lower than 100000rev/min. Determine the shrinkage allowance required in order to avoid separation disc and shaft, at a speed of 100000rev/min. For the material assume a Young's Modulus, Poisson Ratio and density of 210GPa, 0.3 and 7850kg/m³ respectively.arrow_forwardSintering of ceramics may exhibit the following characteristics: Select one or more: a. The surface energy of the system increases b. It involves the high-pressure deformation of a pre-existing shape into a new form c. Pores become larger on average d. Pores become smaller e. Parts of the material may become amorphous f. The total surface area (including internal area) decreasesarrow_forward
- If 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_forwardExplain sintering and provide an ICT diagram of the processarrow_forwardexplain how we can made cranckshaft from die casting in steps (with pictures)arrow_forward
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