Manufacturing and Industrial Engineering - GATE practice papers - Mechanical for Q. 387

Q.  What is the effect of hot working process on material density? (Marks: 02)
- Published on 19 Oct 15

a. material density decreases in hot working process
b. material density increases in hot working process
c. material density remains same in hot working process
d. unpredictable

ANSWER: material density increases in hot working process
 
Any pores or cavity in the cast metal disappear in hot working process. This results in increase in material density.

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