Question

1. What type of product would be considered to be a prospect for powder metallurgy manufacture? 4. Why might the term “particulate processing” be a more accurate description than “powder metallurgy”? 5. What are some of the primary market areas for P/M products? 6. Which metal family currently dominates the powder metallurgy market? 7. What are the four basic steps that are usually involved in making products by powder metallurgy? 15. What is green strength, and why is it important to the manufacture of high‐quality P/M products? 18. How does the addition of a lubricant affect compressibility? Green strength? 25. For what conditions might a double‐action pressing be more attractive than compaction with a single moving punch? 27. Describe the four classes of conventional powder metallurgy products. 30. What is a typical as‐compacted density? How much residual porosity is still present? 33. What are the three stages associated with most P/M sintering operations? 35. Why is a protective atmosphere required during sintering? During the cool‐down period? 36. What types of atmospheres are used during sintering?

          1. What type of product would be considered to be a prospect for powder metallurgy manufacture?
4. Why might the term “particulate processing” be a more accurate description than “powder metallurgy”?
5. What are some of the primary market areas for P/M products?
6. Which metal family currently dominates the powder metallurgy market?
7. What are the four basic steps that are usually involved in making products by powder metallurgy?
15. What is green strength, and why is it important to the manufacture of high‐quality P/M products?
18. How does the addition of a lubricant affect compressibility? Green strength?
25. For what conditions might a double‐action pressing be more attractive than compaction with a single moving punch?
27. Describe the four classes of conventional powder metallurgy products.
30. What is a typical as‐compacted density? How much residual porosity is still present?
33. What are the three stages associated with most P/M sintering operations?
35. Why is a protective atmosphere required during sintering? During the cool‐down period?
36. What types of atmospheres are used during sintering?

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