CAJ | 학술논문

通过不同热处理工艺试验结果的对比分析，制定了30Cr2Ni2Mo钢大型环类锻件的最佳热处理工艺。对锻件不同部位进行取样分析，结果表明锻件表面和心部的力学性能全部满足技术要求，但壁厚1/2处的力学性能略优于内层。这主要是由于心部获得粒状贝氏体和富含合金元素回火索氏体混合组织的缘故。同时，试验还获得了锻件调质后的变形情况，为高淬透性钢大型环类锻件的热处理留量提供了有力的参考依据。
통과불동열처리공예시험결과적대비분석，제정료30Cr2Ni2Mo강대형배류단건적최가열처리공예。대단건불동부위진행취양분석，결과표명단건표면화심부적역학성능전부만족기술요구，단벽후1/2처적역학성능략우우내층。저주요시유우심부획득립상패씨체화부함합금원소회화색씨체혼합조직적연고。동시，시험환획득료단건조질후적변형정황，위고쉬투성강대형배류단건적열처리류량제공료유력적삼고의거。
Through the comparative analysis of results of different heat treatment process test , the best heat treat-ment process of 30Cr2Ni2Mo steel large ring forgings is formulated .The results show that all mechanical properties of forging surface and center satisfy the technical requirements by analyzing the different sampling parts of the forgings , but the mechanical properties of 1/2 of the wall thickness is slightly better than that of the inner layer , which is mainly caused by the heart obtaining granular bainite and being rich in alloying elements tempered sorbite hybrid organization . The distortion situation after quenching and tempering is obtained by test which can be regarded as powerful reference for the process allowance of heat treatment deformation of large ring forgings made by high hardenability steel .