CAJ | 학술논문

对31 CrMoV9钢棒料和大型齿圈坯件进行了双细化处理。结果表明，双细化工艺处理可使φ70 mm的棒料完全淬透，高温回火后组织为回火索氏体1级，晶粒度6．5～7．5级，力学性能达到或超过德国相关标准，并解决了含V钢切削性能差的问题。
대31 CrMoV9강봉료화대형치권배건진행료쌍세화처리。결과표명，쌍세화공예처리가사φ70 mm적봉료완전쉬투，고온회화후조직위회화색씨체1급，정립도6．5～7．5급，역학성능체도혹초과덕국상관표준，병해결료함V강절삭성능차적문제。
The bars and heavy gear ring blanks of 31CrMoV9 steel were solution-double-refinement treated.The results show that 70-mm-diam bar can be through hardened , and after high tempering the size class number of the tempered sorbite is 1, and the grain size number is 6.5 to 7.5, the mechanical properties reaching or exceeding those in the Germany standards , and removing cutting ability problem of vanadium-containing steel .