我厂生产的35CrMnSi截齿工序:下料→锻→退火→机加工→淬火→回火→磨角→抛丸处理。退火工艺的目的是便于随后的机加工(刨、铣、钻孔),但退火工艺周期长、氧化脱碳严重,并且耗电较大。为了消除这种现象,又不影响机加工,我们采用高温软化回火来代替退火工艺,软化温度为680～700℃,到温后保温2～3 h即出炉空冷,回火后HB180～200(退火HB90～120) 35CrMnSi picks I plant production process: blanking → forging → annealing → machining → quenching → tempering → grinding angle → shot blasting. The purpose of annealing process is to facilitate the subsequent machining (planing, milling, drilling), but the annealing process is long, serious oxidation and decarbonization, and power consumption. In order to eliminate this phenomenon, does not affect the machining, we use high temperature softening and tempering instead of annealing process, the softening temperature of 680 ~ 700 ℃, to warm after 2 ~ 3 h baked air cooling, tempering HB180 ~ 200 ( Annealed HB90 ~ 120)