单项选择题
Reheating a hardening component to a temperature lower than the hardening temperature and then cooling it is known as （）
A.low temperature hardening
B.case hardening
C.annealing
D.tempering
点击查看答案&解析
相关考题
-
单项选择题
Which of the listed effects represents the purpose of heat treating steel?（）
A.Develop ductility
B.Improve machining qualities
C.Relieves stresses
D.All of the above -
单项选择题
Which of the following nondestructive testing methods can be used to detect a suspected subsurface defect in a tail-shaft liner?（）
A.Dye penetrant
B.Magnetic particle
C.Ultrasonic
D.All of the above -
单项选择题
To anneal a copper gasket, you should heat the gasket（）
A.and quench it in oil
B.cherry red and quench in water
C.and let it cool slowly in the air
D.and carbonize
