carburizing stage

The self adaptation principle which has been employed in the selection of carburizing stage and diffusion stage during a two stage carburizing process has been suspected and its unreasonability has been approved.

利用气体渗碳的物质传递数学模型和气体渗碳ＣＡＤ软件进行了两段渗碳工艺的数值模拟计算，对两段渗碳工艺强渗期和扩散期选择的自适应原则提出了疑问，证明了其不合理性。

The study proves that utilizing high temperature reinforcing carburizing,higher temperature sub balance carbon potential diffusion and pre cooling quenching can effectively increase the speed of carburizing improve diffusion layer structure and eliminate carburizing grinding crack.

本文介绍了一种新型渗碳工艺，研究表明：利用高温强渗，较高温次平衡碳势扩散、预冷淬火的渗碳方法，可有效地提高渗碳速度，改善渗层组织，消除渗碳磨削裂纹。