1- Explain why a casting may have to be subjected to various heat treatments. 2- Describe the drawbacks to having a riser that is (a) too large and (b) too small. 3- Explain the effects of mold materials on fluid flow and heat transfer in casting operations.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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1- Explain why a casting may have to be subjected to various heat treatments.
2- Describe the drawbacks to having a riser that is (a) too large and (b) too small.
3- Explain the effects of mold materials on fluid flow and heat transfer in casting
operations.
4- Explain why continuous chips are not necessarily desirable.
5- List the factors that contribute to poor surface finish in cutting.
6- Tool life can be almost infinite at low cutting speeds. Would you then
recommend that all machining be done at low speeds? Explain
7- The cutting force increases with the depth of cut and decreasing rake angle.
Explain why.
8- Explain the segregation in casting of alloys.
Transcribed Image Text:1- Explain why a casting may have to be subjected to various heat treatments. 2- Describe the drawbacks to having a riser that is (a) too large and (b) too small. 3- Explain the effects of mold materials on fluid flow and heat transfer in casting operations. 4- Explain why continuous chips are not necessarily desirable. 5- List the factors that contribute to poor surface finish in cutting. 6- Tool life can be almost infinite at low cutting speeds. Would you then recommend that all machining be done at low speeds? Explain 7- The cutting force increases with the depth of cut and decreasing rake angle. Explain why. 8- Explain the segregation in casting of alloys.
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