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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Textbook Question
Chapter 14, Problem 80RQ
What are some of the ways by which expanded polystyrene patterns can be made?
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Which of the following are reasons why injection molding of thermosets is more difficult
than injection molding of thermoplastics (two best answers):
O allowances must be made for cross-linking of thermosets
O barrel temperatures must be hotter for thermosets
O cycle times are longer because of curing
thermosets are denser
O two injection units are required
Reaction injection molding is used for which one of the following plastic types:
thermoplastics
thermosets
2. Geometry
The top part in Figure 1 is used as the battery cover in a cellphone. How would you modify the
design to make it easier to manufacture?
Plastic bottle caps [the kind that screw on to a bottle] illustrate one major injection molding hurdle.
What is it? How can you get around it?
Cellphone back
Bottle cap
Figure 1 Geometry Problem
Chapter 14 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 14 - What are some of the factors that influence the...Ch. 14 - What are the three basic categories of casting...Ch. 14 - What metals are frequently cast into products?Ch. 14 - What features combine to make cast iron and...Ch. 14 - Which type of casting is the most common and most...Ch. 14 - Prob. 6RQCh. 14 - Prob. 7RQCh. 14 - What is the simplest and least expensive type of...Ch. 14 - What is a match plate, and how does it aid...Ch. 14 - How is a cope-and-drag pattern different from a...
Ch. 14 - Prob. 11RQCh. 14 - Prob. 12RQCh. 14 - For what types of products might a loose-piece...Ch. 14 - What are the four primary requirements of molding...Ch. 14 - Prob. 15RQCh. 14 - Prob. 16RQCh. 14 - What is a muller, and what function does it...Ch. 14 - Prob. 18RQCh. 14 - What is a standard rammed specimen for evaluating...Ch. 14 - What is permeability, and why is it important in...Ch. 14 - How does the ratio of water to clay affect the...Ch. 14 - How is the hardness of molding sand determined?Ch. 14 - Prob. 23RQCh. 14 - How does the size and shape of the sand grains...Ch. 14 - Prob. 25RQCh. 14 - Prob. 26RQCh. 14 - Prob. 27RQCh. 14 - Prob. 28RQCh. 14 - Prob. 29RQCh. 14 - Prob. 30RQCh. 14 - What are hot tears, and what can cause them to...Ch. 14 - When might hand ramming be the preferred method of...Ch. 14 - Prob. 33RQCh. 14 - Prob. 34RQCh. 14 - Prob. 35RQCh. 14 - Prob. 36RQCh. 14 - What is stack molding?Ch. 14 - Prob. 38RQCh. 14 - What are the components of green sand?Ch. 14 - Prob. 40RQCh. 14 - Prob. 41RQCh. 14 - Prob. 42RQCh. 14 - What are some of the advantages and limitations of...Ch. 14 - Prob. 44RQCh. 14 - Prob. 45RQCh. 14 - Prob. 46RQCh. 14 - Prob. 47RQCh. 14 - Prob. 48RQCh. 14 - Prob. 49RQCh. 14 - Why do shell molds have excellent permeability and...Ch. 14 - Prob. 51RQCh. 14 - Prob. 52RQCh. 14 - Prob. 53RQCh. 14 - Prob. 54RQCh. 14 - Prob. 55RQCh. 14 - What is the sand binder in the core-oil process,...Ch. 14 - What is the binder in the hot-box core-making...Ch. 14 - What is the primary attraction of the cold-box...Ch. 14 - What is shelf life? How is it different from bench...Ch. 14 - Prob. 60RQCh. 14 - Prob. 61RQCh. 14 - Prob. 62RQCh. 14 - Prob. 63RQCh. 14 - Prob. 64RQCh. 14 - Prob. 65RQCh. 14 - Why are plaster molds only suitable for the...Ch. 14 - How does the Antioch process provide permeability...Ch. 14 - What is the primary performance difference between...Ch. 14 - Prob. 69RQCh. 14 - Prob. 70RQCh. 14 - Prob. 71RQCh. 14 - Describe the progressive construction of an...Ch. 14 - Why are investment casting molds generally...Ch. 14 - Prob. 74RQCh. 14 - What are some of the attractive features of...Ch. 14 - What recent development has made one-of-a-kind or...Ch. 14 - Prob. 77RQCh. 14 - Prob. 78RQCh. 14 - What are some of the benefits of not having to...Ch. 14 - What are some of the ways by which expanded...Ch. 14 - Prob. 81RQCh. 14 - Prob. 82RQCh. 14 - Prob. 83RQCh. 14 - Prob. 84RQCh. 14 - Prob. 85RQCh. 14 - Prob. 86RQCh. 14 - What are the most common single-use mold...Ch. 14 - What are the most common methods of core...Ch. 14 - Although cores increase the cost of castings, they...Ch. 14 - Several of the additive manufacturing processes...Ch. 14 - Additive manufacturing processes can also build...Ch. 14 - Cast iron cookware can offer a number of...Ch. 14 - Figure CS-14 shows the hitch ball component of a...Ch. 14 - Prob. 2.1CSCh. 14 - Prob. 2.2CSCh. 14 - Prob. 2.3CS
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- How are composite materials created?arrow_forwardViscosity is an important property of a polymer melt in plastics shaping processes. Upon what parameters does viscosity depend?arrow_forwardWhat are the roles of heat, pressure, and moisture in the process used to makecorrugated fiberboard?arrow_forward
- (b) Which of the following plastic and composite materials processing is most suitable for the application of polymer automotive body panel? Explain how the selected manufacturing process selected can be used to produce the product shown in Figure 1.2 below • Injection Moulding • Reaction injection Moulding (RIM) • Blow Moulding • Rotational Moulding • Thermoforming • Compression Moulding (CM) • Transfer Moulding (TM) • Casting • Foam Moulding SULIT SULIT (BMCG 2323) Figure 1.2 Example of polymer automotive body panelarrow_forwardCompression Moulding of plastic please write the all process of thsi machinearrow_forwardCompare compression and injection molding for speed, cost per part, investment cost, and flexibility in types of material that can be handled?arrow_forward
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