Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Textbook Question
Chapter 11, Problem 9RQ
Name the type of materials typically used for permanent-mold casting processes.
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Chapter 11 Solutions
Manufacturing Engineering & Technology
Ch. 11 - Describe the differences between expendable and...Ch. 11 - Name the important factors in selecting sand for...Ch. 11 - What are the major types of sand molds? What are...Ch. 11 - List important considerations when selecting...Ch. 11 - What is the function of a core?Ch. 11 - What is the difference between sand-mold and...Ch. 11 - What are composite molds? Why are they used?Ch. 11 - Describe the features of plaster-mold casting.Ch. 11 - Name the type of materials typically used for...Ch. 11 - What are the advantages of pressure casting over...
Ch. 11 - List the advantages and limitations of die...Ch. 11 - What is the purpose of a riser? What is a blind...Ch. 11 - Explain the purpose of a vent and a runner in a...Ch. 11 - How are shell molds produced?Ch. 11 - What keeps the mold together in vacuum casting?Ch. 11 - What is squeeze casting? What are its advantages?Ch. 11 - What are the advantages of the lost-foam casting...Ch. 11 - Prob. 18RQCh. 11 - What are the reasons for the large variety of...Ch. 11 - Why are risers not as useful in die casting as...Ch. 11 - Describe the drawbacks to having a riser that is...Ch. 11 - Why can blind risers be smaller than open-top...Ch. 11 - Why does die casting produce the smallest cast...Ch. 11 - Why is the investment-casting process capable of...Ch. 11 - What differences, if any, would you expect in the...Ch. 11 - Recently, cores for sand casting have been...Ch. 11 - Would you recommend preheating the molds used in...Ch. 11 - Give reasons for, and examples of, using die...Ch. 11 - Referring to Fig. 11.3, do you think it is...Ch. 11 - Explain why squeeze casting produces parts with...Ch. 11 - How are the individual wax patterns attached on a...Ch. 11 - Describe the measures that you would take to...Ch. 11 - You have seen that, even though die casting...Ch. 11 - How are hollow parts with various cavities made by...Ch. 11 - It was stated that the strength-to-weight ratio of...Ch. 11 - How are risers and sprues placed in sand molds?...Ch. 11 - In shell-mold casting, the curing process is...Ch. 11 - Why does the die-casting machine shown in Fig....Ch. 11 - Prob. 39QLPCh. 11 - What are the benefits to heating the mold in...Ch. 11 - The slushy state of alloys refers to that state...Ch. 11 - Can a chaplet also act as a chill? Explain.Ch. 11 - Rank the casting processes described in this...Ch. 11 - Estimate the clamping force for a die-casting...Ch. 11 - In sand casting, it is important that the...Ch. 11 - If an acceleration of 100 g is necessary to...Ch. 11 - A jeweler wishes to produce 24 gold rings in one...Ch. 11 - Describe the procedures that would be involved in...Ch. 11 - The optimum shape of a riser is spherical to...Ch. 11 - Sketch and describe a casting line consisting of...Ch. 11 - Outline the casting processes that would be most...Ch. 11 - Make a list of the mold and die materials used in...Ch. 11 - Write a brief paper on the permeability of molds...Ch. 11 - Light metals commonly are cast in vulcanized...Ch. 11 - It sometimes is desirable to cool metals more...Ch. 11 - The part shown in Fig. P11.59 is a hemispherical...Ch. 11 - Porosity that has developed in the boss of a...Ch. 11 - In Fig. II.1b the gemstones have been cast in...
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- What would you do to improve the surface finish in expendable-mold casting processes?arrow_forwardwhere are the die cores placed in die casting?arrow_forwardWhich among the following design considerations for casting to be followed to reduce stress concentration in parts? O a. Shape the casting for orderly solidification O b. Avoid abrupt changes in cross section Oc Avoid thin sections O d. Make provision for easy removal of pattern from the mouldarrow_forward
- Explain the Desirable Mold Properties in sand casting?arrow_forward3. (Slow or Fast, which one? – Circle one) cooling rates results in coarse dendritic structures. 4. The higher the viscosity of the melt, the . its fluidity? 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 force. 17. Balls for ball bearings can be made by rolling…arrow_forward2. 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_forward
- What is gating system in casting?arrow_forward3) What are the means of elastic and plastic deformations? List the passageway (gating system) elements in sand casting moulds and show them with drawing?arrow_forwardExplain in detail different components of a gating system in sand mold castingarrow_forward
- 4) 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_forwardWhat are patterns for stand castings made of and what material is used to make patterns for shell molds?arrow_forward(27) List the applications of permanent mold casting along with metals most commonly cast for permanent mold casting.arrow_forward
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