GCr15钢制薄壁轴承套圈高压气淬工艺及分析

摘要

为探索 GCr15钢薄壁套圈高压气淬的可行性，对有效壁厚5 mm 的 GCr15钢制薄壁轴承套圈在真空炉中以不同压力的氮气进行了气淬试验。结果表明：高压气淬能满足薄壁套圈的淬透性要求；最佳气淬压力为0．3～0．4 MPa，此时套圈变形较小，且淬火组织和硬度均能满足相关标准的要求。%In order to explore the feasibility of high -pressure gas quenching for thin -walled rings made of steel GCr15,the gas quenching tests are carried out in a vacuum furnace under different pressure of nitrogen for rings of thin-walled bearings made of steel GCr15 with effective wall thickness of 5 mm.The results show that the high -pressure gas quenching meets the hardenability requirements of thin -walled ring.The optimum gas quenching pressure is 0.3~0.4 MPa,the deformation of rings is smaller,the structure and hardness after quenching meet the requirements of relevant standard.