1. Annealing — stress relief, soften for machining
2. Quenching — harden to HRC 55-65
3. Tempering — reduce brittleness, adjust final hardness
4. Nitriding — surface hardening for wear resistance (0.1-0.3mm case)

Full guide: https://www.mfgabc.com/guides/heat-treatment-steel-guide.html

这个参数你们一般设多少？评论区说说。