热处理
熱處理
열처리
HEAT TREATMENT
2015年
1期
60-61,62
,共3页
齿轮%畸变%分级淬火油
齒輪%畸變%分級淬火油
치륜%기변%분급쉬화유
gear%distortion%marquenching oil
一种材质为20Cr2Ni4A的齿轮，经渗碳、淬火后，其内花键畸变量超差。分析表明，齿轮内花键淬火畸变过大，是由于采用冷却速度很高的HOUGHTO-QUENCH K 油淬火所造成的。据此，减小齿轮内花键淬火畸变的根本性措施为：订购含碳量为下限的20Cr2Ni4A 钢；采用好富顿公司的MAR-TEMP 355分级淬火油淬火。
一種材質為20Cr2Ni4A的齒輪，經滲碳、淬火後，其內花鍵畸變量超差。分析錶明，齒輪內花鍵淬火畸變過大，是由于採用冷卻速度很高的HOUGHTO-QUENCH K 油淬火所造成的。據此，減小齒輪內花鍵淬火畸變的根本性措施為：訂購含碳量為下限的20Cr2Ni4A 鋼；採用好富頓公司的MAR-TEMP 355分級淬火油淬火。
일충재질위20Cr2Ni4A적치륜，경삼탄、쉬화후，기내화건기변량초차。분석표명，치륜내화건쉬화기변과대，시유우채용냉각속도흔고적HOUGHTO-QUENCH K 유쉬화소조성적。거차，감소치륜내화건쉬화기변적근본성조시위：정구함탄량위하한적20Cr2Ni4A 강；채용호부돈공사적MAR-TEMP 355분급쉬화유쉬화。
Distortion amount of internal spline of one type of gear carburized and hardened went beyond the limit. It was revealed,on the basis of the analysis on cause of the gear distortion ,that the excess distortion of the gear internal spline attributed to quenching of the gear in a HOUGHTO-QUENCH K oil.In view of the above,cardinal precautions against excess distortion of the gear internal spline are as follows:(a)purchasing 20Cr2Ni4A steel with carbon level on the lower side;(b)quenching the gear in MAR-TEMP 355 marquench oil produced by Houghton (China)High-grade Industrial Medium Co..
