即使所有其它条件保持不变，随着要淬火的零件尺寸的增加其表面硬度也会有所下降。
As the size of parts to be hardened increases, the surface hardness decreases somewhat even though all other conditions have remained the same.
本文介绍国产A508-3钢在不同的淬火、回火和退火条件下的热处理实验的某些结果。
This paper presents some results of heat treatment experiments of A508-3 steel at different quenching, tempering and annealing conditions.
分析了工厂网带炉条件下淬火织针表面硬度不足的原因。
Analyse the reason that surface hardness of quench needle is not enough under original production technology circumstance of factory.
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