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本文详细总结了各类铜的球化退火工艺,并根据相变的基本规律对其中某些工艺进行了评述,对近年来钢的球化退火工艺的变革和进展也作了扼要介绍,并对在 A_1以下长期加热碳化物球化的两种球化机制分别进行了分析。
In this paper, the various types of copper spheroidizing annealing process are summarized in detail, and some of them are reviewed according to the basic law of phase transformation. The changes and progress of steel spheroidizing annealing process in recent years are also briefly introduced. The two spheroidization mechanisms of long-term heating carbide under A_1 were analyzed respectively.