A: quenching
B: tempering
C: annealing
D: normalizing
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 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
- 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
- During heat treatment of steel, austenite transforms into martensite by A: annealing B: austenitizing C: quenching D: normalizing
内容
- 0
In which heat treatment process, the specimen should be cooled in water or oil A: Tempering B: Annealing C: Quenching D: Case hardening
- 1
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)
- 2
____is<br/>a low-temperature heat treatment used to eliminate all or part of the<br/>effect of cold working in steels. A: Normalizing B: Spheroidizing C: Annealing D: Process<br/>annealing
- 3
The<br/>heat treatment process (such as annealing, normalizing, etc. ) to<br/>improve the cutting performance of materials is usually arranged in<br/>(). A: After machining B: Before grinding C: Before cutting D: After roughing and before finishing
- 4
In the as-quenched state, martensite is very hard and so brittle that a heat treatment known as_________must be accomplished sequently. A: normalizing B: annealing C: tempering D: austempering