The proper preliminary heat treatment for T12 steel is .
A: complete annealing
B: homogenizing annealing
C: spheroidizing annealing
D: isothermal annealing
A: complete annealing
B: homogenizing annealing
C: spheroidizing annealing
D: isothermal annealing
举一反三
- ____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
- To obtain an steel with fine pearlite we perform the commercial heat treatment known as total annealing
- ____<br/>is the isothermal heat treatment by which austenite transforms to<br/>bainite. A: Isothermal<br/>annealing B: Quenching C: Austempering D: Marquenching
- During heat treatment of steel, austenite transforms into martensite by A: annealing B: austenitizing C: quenching D: normalizing
- The brazing weld need annealing heat treatment so that it is easily machined.。（ ）