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 20, Problem 81RQ
To determine
The molding processes used to shape products from laminated sheets of woven fibers.
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What are some things to take into consideration when injection-molding long, thin parts?
What materials should not be used for injection molding?
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1) Thermoplastics that have not been previously molded are called which of the following?
A) Fresh
B) virgin
C) pure
D) unused
E) New
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2) When compared to conventional injection molding, the clamping forces in structural foam molding are.
A) the same
B) higher
C) lower
Chapter 20 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 20 - Why are the fabrication processes applied to...Ch. 20 - How does the fabrication of a shaped product from...Ch. 20 - What are some of the methods used to shape...Ch. 20 - What are some of the ways that plastic sheet,...Ch. 20 - Prob. 5RQCh. 20 - What types of polymers are most commonly blow...Ch. 20 - What are some common blow molded products, in...Ch. 20 - Why do blow molding molds typically contain a...Ch. 20 - Prob. 9RQCh. 20 - Prob. 10RQ
Ch. 20 - Prob. 11RQCh. 20 - Prob. 12RQCh. 20 - Prob. 13RQCh. 20 - Prob. 14RQCh. 20 - Prob. 15RQCh. 20 - What are some of the benefits of a hot runner...Ch. 20 - Why is the cycle time for the injection molding of...Ch. 20 - Prob. 18RQCh. 20 - Prob. 19RQCh. 20 - What are some of the ways by which a polymer...Ch. 20 - Prob. 21RQCh. 20 - How can the extrusion process be used to produce...Ch. 20 - Prob. 23RQCh. 20 - Prob. 24RQCh. 20 - Prob. 25RQCh. 20 - What is the difference between open-cell and...Ch. 20 - Prob. 27RQCh. 20 - What types of products are produced by...Ch. 20 - Prob. 29RQCh. 20 - What are some of the general properties of...Ch. 20 - What are some of the attractive features of laser...Ch. 20 - What property of plastics is responsible for...Ch. 20 - Prob. 33RQCh. 20 - Prob. 34RQCh. 20 - Prob. 35RQCh. 20 - Prob. 36RQCh. 20 - Prob. 37RQCh. 20 - Prob. 38RQCh. 20 - Why might threaded inserts be preferred over other...Ch. 20 - What are some of the ways in which metal inserts...Ch. 20 - Prob. 41RQCh. 20 - Why does locating a parting line on a sharp corner...Ch. 20 - Prob. 43RQCh. 20 - Prob. 44RQCh. 20 - Prob. 45RQCh. 20 - What property changes occur during vulcanization?Ch. 20 - Prob. 47RQCh. 20 - Prob. 48RQCh. 20 - How are glass fibers produced?Ch. 20 - Prob. 50RQCh. 20 - Prob. 51RQCh. 20 - What are glass-ceramics? How are they produced?Ch. 20 - Prob. 53RQCh. 20 - Describe the differences between the injection...Ch. 20 - Prob. 55RQCh. 20 - What is the difference between slip casting and...Ch. 20 - Prob. 57RQCh. 20 - Prob. 58RQCh. 20 - How does cementation differ from sintering?Ch. 20 - What are the benefits and limitations of machining...Ch. 20 - Prob. 61RQCh. 20 - Why are joining operations usually avoided when...Ch. 20 - Prob. 63RQCh. 20 - Discuss some of the design guidelines that relate...Ch. 20 - Prob. 65RQCh. 20 - Why are the processes used to fabricate...Ch. 20 - How are metals and ceramics combined in the...Ch. 20 - What are some of the processes that can be used to...Ch. 20 - What conditions might be attractive for...Ch. 20 - Prob. 70RQCh. 20 - Prob. 71RQCh. 20 - Prob. 72RQCh. 20 - Prob. 73RQCh. 20 - What are some of the ways that liquefied matrix...Ch. 20 - Prob. 75RQCh. 20 - Prob. 76RQCh. 20 - Prob. 77RQCh. 20 - In what way is pultrusion similar to wire drawing?Ch. 20 - Prob. 79RQCh. 20 - What are some typical products that are made by...Ch. 20 - Prob. 81RQCh. 20 - Prob. 82RQCh. 20 - Prob. 83RQCh. 20 - Prob. 84RQCh. 20 - Prob. 85RQCh. 20 - Prob. 86RQCh. 20 - What is the difference between reaction injection...Ch. 20 - Prob. 88RQCh. 20 - Prob. 89RQCh. 20 - What is a common property objective in...Ch. 20 - Prob. 91RQCh. 20 - Prob. 92RQCh. 20 - Prob. 93RQCh. 20 - What is the major concern when considering the...Ch. 20 - Prob. 95RQCh. 20 - Prob. 1PCh. 20 - Figure 20.A depicts the handles of two large...Ch. 20 - Tires are the dominant product of the rubber...Ch. 20 - Prob. 4PCh. 20 - Prob. 6PCh. 20 - Prob. 8PCh. 20 - Prob. 1.1CSCh. 20 - For plastic (high-density polyethylene)...Ch. 20 - What might be the pros and cons of weldable...Ch. 20 - Prob. 1.5CSCh. 20 - Prob. 1.6CSCh. 20 - Prob. 1.7CSCh. 20 - Crashworthiness is an important safety...Ch. 20 - Prob. 1.9CSCh. 20 - Prob. 1.10CSCh. 20 - Prob. 1.11CSCh. 20 - Prob. 2.1CSCh. 20 - Prob. 2.2CSCh. 20 - Prob. 2.3CSCh. 20 - Prob. 2.4CSCh. 20 - Prob. 2.5CS
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- What are the functions of the screen pack and breaker plate at the die end of the extruder barrel?arrow_forwardViscosity is an important property of a polymer melt in plastics shaping processes. Upon what parameters does viscosity depend?arrow_forwardThe parting line in injection molding is which one of the following: (a) the lines formed where polymer melt meets after flowing around a core in the mold, (b) the narrow gate sections where the parts are separated from the runner, (c) where the clamping unit is joined to the injection unit in the molding machine, or (d) where the two mold halves come together?arrow_forward
- What are some P/M (powder metallurgy) products that have been intentionally designed to use the porosity or permeability features of the process?arrow_forwardIndustrial Pipes Is the residual tightening given in screw cases intended to compensate for internal pressure and should be added to the initial tightening?arrow_forwardBriefly describe the process and then identify at least one type of product which can be manufactured using Manual and automated layup process. Then describe the properties that make the composite and process suitable for that application.arrow_forward
- What means product quality ? What characristics does the term product quality include ? 2 - what steps are included in the molding process, list them ?arrow_forwardCompare compression and injection molding for speed, cost per part, investment cost, and flexibility in types of material that can be handled?arrow_forwardWhat laws of thermodynamics applicable to the compression molding machine concept? Explain.arrow_forward
- Which forming process would you use to make the following composite parts? (Explain) A. A 12" diameter pipe with a 1/4" wall thickness to be used in a chemical plant. B. A roof panel for a road grader. Production is one grader per day. C. Tool chests for contractors. The company produces five units a day. D. Overhead storage bin doors for a passenger jet. A hundred parts are needed for each plane, and production is four planes per month.arrow_forwardWhen plastic processing blanks, the blanks undergo a permanent change in shape. Name examples of at least four plastic manufacturing processes.arrow_forwardBriefly describe the process and then identify at least one type of product which can be manufactured using pultrusion process. Then describe the properties that make the composite and process suitable for that application.arrow_forward
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