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 15, Problem 38RQ
Describe the inner surface profile of true centrifugal casting if the rotational axis is horizontal. If it is vertical.
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A vertical true centrifugal casting process is used to produce bushings
that are 200 mm long and 200 mm in outside diameter. If the rotational
speed during solidification is 500 rev/min, determine the inside diameter at
the top of the bushing if the inside diameter at the bottom is 150 mm?
Ans. Dt = 167.98 mm.
where are the die cores placed in die casting?
3. (Slow or Fast, which one? – Circle one) cooling rates results in coarse dendritic structures.
4. The higher the viscosity of the melt, the .
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5. Name 3 defects in casting:
6. Internal or external
are an effective means of reducing shrinkage porosity during solidification.
7. Is green-sand molding expensive?
8.
.... are inserts placed in the molds to form the hollow regions in casting.
9. The method of casting turbine blades:
Sample A
10. Which one has higher stiffness? Sample A or Sample B
Sample B
11. Which one has higher toughness? Sample A or Sample B
12. Which one has higher strength? Sample A or Sample B
13. Which one has higher ductility? Sample A or Sample
14. Higher
......... means more rigidity.
Strain
15. Before the no-slip point, the velocity is (higher or lower, which one? - Circle one)
16. In flat-rolling process, using smaller diameter rolls (increases or decreases, which one? - Circle one) the roll
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17. Balls for ball bearings can be made by
rolling…
Chapter 15 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 15 - What are some of the major disadvantages of the...Ch. 15 - What are some possible limitations of multiple-use...Ch. 15 - Prob. 3RQCh. 15 - Prob. 4RQCh. 15 - Why do permanent-mold castings generally have...Ch. 15 - Prob. 6RQCh. 15 - What is semipermanent-mold casting?Ch. 15 - Why might low production runs be unattractive for...Ch. 15 - Prob. 9RQCh. 15 - In addition to the mold cavity, what additional...
Ch. 15 - Prob. 11RQCh. 15 - Prob. 12RQCh. 15 - Prob. 13RQCh. 15 - Prob. 14RQCh. 15 - Prob. 15RQCh. 15 - Prob. 16RQCh. 15 - What types of products would be possible...Ch. 15 - Prob. 18RQCh. 15 - What are the most common die-cast materials?Ch. 15 - Contrast the materials used to make dies for...Ch. 15 - Prob. 21RQCh. 15 - Prob. 22RQCh. 15 - Prob. 23RQCh. 15 - Prob. 24RQCh. 15 - Prob. 25RQCh. 15 - Prob. 26RQCh. 15 - How does the air in the mold cavity escape in the...Ch. 15 - Are risers employed in die casting? Can sand cores...Ch. 15 - Prob. 29RQCh. 15 - Give some examples of cast-in inserts.Ch. 15 - Prob. 31RQCh. 15 - Prob. 32RQCh. 15 - Prob. 33RQCh. 15 - Prob. 34RQCh. 15 - Prob. 35RQCh. 15 - What is a thixotropic material? How does it...Ch. 15 - What are some of the attractive features of...Ch. 15 - Describe the inner surface profile of true...Ch. 15 - Prob. 39RQCh. 15 - Prob. 40RQCh. 15 - Prob. 41RQCh. 15 - Prob. 42RQCh. 15 - Prob. 43RQCh. 15 - What types of equipment are used by foundries to...Ch. 15 - What are some of the factors that influence the...Ch. 15 - What are some of the possible feedstock materials...Ch. 15 - What types of metals are commonly melted in...Ch. 15 - What are some of the ways that the melting rate of...Ch. 15 - What are some of the pros and cons of indirect...Ch. 15 - Prob. 50RQCh. 15 - Prob. 51RQCh. 15 - Prob. 52RQCh. 15 - What are the primary functions of a pouring...Ch. 15 - Prob. 54RQCh. 15 - Prob. 55RQCh. 15 - What are some common ways to remove cores from...Ch. 15 - Prob. 57RQCh. 15 - Prob. 58RQCh. 15 - What is the difference between infiltration and...Ch. 15 - Prob. 60RQCh. 15 - What are some of the ways that industrial robots...Ch. 15 - Prob. 62RQCh. 15 - Prob. 63RQCh. 15 - Attractive properties for casting alloys include...Ch. 15 - Prob. 2PCh. 15 - Prob. 3PCh. 15 - Prob. 4PCh. 15 - Select two of the methods used to produce and hold...Ch. 15 - Prob. 7PCh. 15 - Discuss the various features that this component...Ch. 15 - Prob. 3CSCh. 15 - Prob. 4CSCh. 15 - Prob. 5CSCh. 15 - Prob. 6CS
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- In turbine blade casting, how is a single-crystal structure achieved? Select one or more: a. By using a curving coil-like channel in the casting mould b. By removing grain boundaries by hot working and recrystallisation c. By careful control of the temperatures of the mould d. By introducing impurities into the molten alloy in the mouldarrow_forwardWhat is gating system in casting?arrow_forwardA vertical centrifugal casting process is used to produce bushings that are 0.2 m outside diameter and 0.2 m in long. If the rotational speed during solidification is 500 rpm, determine the inside diameter at the bottom of the bushing if the diameter at the top is 0.084 m. * Add filearrow_forward
- 2. What do the various elements that comprise the gating system? what are the pouring basin in a sand casting? 3. Explain why a sprue should be tapered? 4. What are the disadvantages of die casting? 5. Explain the various kinds of patterns in use. What are the allowances provided How do the patterns differ from the casting required? 6. Define Expendable-mold, Expendable-pattern Casting Processesarrow_forwardWhat is a pattern? What are the consideration necessary while designing pattern in casting?arrow_forward32 Explain in detail different components of a gating system in sand mold casting.arrow_forward
- Sketch a simple part that can be green sand or injection molded. Sketch at least one view of the part. Draw the part in casting orientation. Choose the parting line and label it. Decide if cores are necessary and label them.arrow_forward4) List the passageway (gating system) elements in sand casting moulds and show them with drawing? Draw the stress-strain curve and gives the stress and strain equations for both Engineering and True stress-strainarrow_forward2. What are the general defects found in casting processes? Name and briefly describe two.arrow_forward
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