The heat treatment process comprises annealing, hardening and tempering.
热处理过程包括：退火、淬火与回火。
In the process known AS annealing, we heat the steel above the critical temperature and permit it to cool very slowly.
在通常所说的退火的热处理过程中，我们把钢加热到临界温度以上，再让它慢慢冷却。
A mathematical model for heat transfer process in HPH furnace was established and verified, then applied to analysis of the relationship between gas flow rate and annealing time.
通过建立全氢罩式退火炉炉内传热过程的数学模型，并经过实测验证后，分析了循环风量与退火时间的关系。
The heat treating process was improved for the malleable cast iron, in accordance with its long annealing period, coarse graphite, residual carbide, lower mechanical properties and limited serve life.
针对可锻铸铁退火周期长、石墨粗大、碳化物消除不彻底、退火工件力学性能低和使用寿命短的问题，对它的退火工艺进行了改进。
Through the annealing test of 304 stainless steel, high performance access to a comprehensive process of heat treatment parameters, to provide for the production of some reference value.
通过304不锈钢的退火试验，获得了综合性能较高的热处理工艺参数，能够为生产提供一定的参考作用。
Basing on the heat transfer mathematical models and the simulation system, the temperature fields of coils during annealing process have been calculated.
并结合对钢卷导热方程和边界条件的离散求解，实现了钢卷温度场模拟计算的同时，获取了全氢炉退火过程的工艺制度。
Basing on the heat transfer mathematical models and the simulation system, the temperature fields of coils during annealing process have been calculated.
并结合对钢卷导热方程和边界条件的离散求解，实现了钢卷温度场模拟计算的同时，获取了全氢炉退火过程的工艺制度。
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