摘要
渗碳工艺不变，通过改变淬火温度、淬火介质的种类及其搅拌速率和回火工艺，研究了热处理工艺对长381mm、粗花键外径73．8mm的17CrNiMo6钢齿轮轴心部硬度的影响。结果表明，经920℃、1．20％碳势渗碳，820℃×30min保温，在搅拌速度为400r／min和300r／min的等温淬火油中淬火，随后165℃×3h回火后，齿轮轴心部硬度为36～41HRC，具有更佳的韧性。
Not changing carburizing process, but changing austenitizing temperature, kind and agitation rate of quenchant and tempering process, the effect of heat treatment process on core hardness of a 17CrNiMo6 steel gear shaft, 73.8 mm in OD of thick spline by 381 mm long, was investigated. The results show that the gear shaft subjected to carburizing at 920 ℃ and carbon potential of 1.20% C, austenitizing at 820 ℃ for 30 rain followed by quenching in martempering oil agitated at 400 and 300 r/min, and then tempering at 165 ℃ for 3 h exhibits core hardness of 36 to 41 HRC, having better toughness.
出处
《热处理》
CAS
2015年第6期53-55,共3页
Heat Treatment
关键词
高合金钢
齿轮轴
热处理工艺
心部硬度
high alloy steel
gear shaft
heat treatment process
core hardness
