摘要
为提高液压柱塞泵用30CrMoV9钢的综合性能及表面的耐磨性和抗疲劳性,对30CrMoV9钢的调质工艺及粗加工后的气体渗氮工艺进行了研究,对调质硬度、渗氮层深度、渗氮后的显微组织、渗氮层硬度等进行了测试。结果表明,经900℃淬火及630~640℃的回火处理后,30CrMoV9钢可满足硬度在28~35 HRC的要求;调质态30CrMoV9钢进行气体渗氮处理后,表面平均硬度可达750 HV0.5以上,可有效提高零件的接触疲劳强度。
In order to improve the comprehensive performance and surface wear resistance and fatigue resistance of the 30CrMoV9 steel for hydraulic piston pump,the quenching and tempering process and the gas nitriding process after rough machining of the 30CrMoV9 steel were studied,and the quenched and tempered hardness,nitrided layer depth,nitrided microstructure and nitrided layer hardness were tested.The results show that after quenching at 900℃and tempering at 630-640℃,the tested steel can meet the requirement of hardness in the range of 28-35 HRC.After gas nitriding,the average surface hardness of the quenched and tempered 30CrMoV9 steel can reach more than 750 HV0.5,which can effectively improve the contact fatigue strength of parts.
作者
王镌
胡柯
钟湘玲
金永黔
Wang Juan;Hu Ke;Zhong Xiangling;Jin Yongqian(Li Yuan Hydraulic(Suzhou)Co.,Ltd.,Guiyang Guizhou 550018,China)
出处
《金属热处理》
CSCD
北大核心
2021年第8期205-208,共4页
Heat Treatment of Metals
关键词
30CrMoV9钢
调质
气体渗氮
综合性能
显微组织
30CrMoV9 steel
quenching and tempering
gas nitriding
comprehensive performance
microstructure
