The heat treatment of spring steel is treated by ( ).
A: quenching and low tempering
B: quenching and tempering
C: quenching and middle tempering
D: quenching and high tempering
A: quenching and low tempering
B: quenching and tempering
C: quenching and middle tempering
D: quenching and high tempering
C
举一反三
- For tool steel, the heat treatment is usually: () A: spheroidizing followed by quenching and low temperature tempering B: carburizing followed by quenching and low temperature tempering C: Quenching and high temperature tempering D: normalizing
- The heat treatment process after carburization is () A: Quenching + high temperature tempering B: Quenching + medium temperature tempering C: Quenching + low temperature tempering D: normalizing
- The common heat treatment on steels such as 65Mn and 60Si2Mn is . A: quenching + low temperature tempering B: quenching + medium temperature tempering C: quenching + high temperature tempering D: normalizing
- To improve the machinability of low carbon steel, the heat treatment process usually used is ( ) . A: quenching B: tempering C: annealing D: normalizing
- In which heat treatment process, the specimen should be cooled in water or oil A: Tempering B: Annealing C: Quenching D: Case hardening
内容
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英译汉： Carbon steel(碳钢) Martensite(马氏体) Pearlite(珠光体) Cementite(渗碳体) Ferrite(铁素体) Austenite(奥氏体) annealing(退火), normalizing(正火), quenching(淬火), and tempering(回火)
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During heat treatment of steel, austenite transforms into martensite by A: annealing B: austenitizing C: quenching D: normalizing
- 2
Quenching<br/>is the heat treatment by which austenite transforms to ____. A: bainite B: pearlite C: martensite D: ferrite
- 3
____<br/>is the isothermal heat treatment by which austenite transforms to<br/>bainite. A: Isothermal<br/>annealing B: Quenching C: Austempering D: Marquenching
- 4
The final structure obtained from tempering a fully hardened steel is called tempered .