合金工具钢芯模水淬油冷热处理工艺  

Heat treatment process of water quenching and oil cooling for alloy tool steel mandrel

作　　者：李文 LI Wen(MCC-SFRE Heavy Industry Equipment Co.,Ltd.,Weinan 711711,Shaanxi,China)

机构地区：[1]中冶陕压重工设备有限公司,陕西渭南711711

出　　处：《金属加工(热加工)》2025年第3期110-113,共4页MW Metal Forming

摘　　要：旋压芯模是旋压加工生产中的关键工装,多采用高合金工具钢制作,常见的材质有9SiCr钢、CrWMn钢等。一般旋压芯模都要进行热处理,必须保证芯模硬度达到58~64HRC才能满足使用要求。原工艺对CrWMn钢芯模采用井式炉加热后油冷的淬火方式,最终硬度只能达到50~55HRC,无法满足使用要求。经过工艺改进,采用水淬油冷工艺使芯模形成2个硬度区域,工作端硬度达到59~60HRC,夹持端硬度为35~40HRC,满足了使用要求。Spinning mandrel is a key tooling in spinning processing production,mostly made of high alloy tool steel,common materials are 9SiCr,CrWMn and so on.Generally,the spinning core die must be heat treated,and the hardness of the core die must be ensured to reach the range of 58~64HRC to meet the requirements of use.At first,we used the oil-cooled quenching method after the well furnace heating on the CrWMn core mold,so that the final hardness can only reach 50~55HRC or so,which can not meet the use.Finally,through the process improvement,the core mold is made to reach two kinds of hardness zone by the water quenching and oil cooling process,the hardness of the used part reaches 59~60HRC,and the hardness of the shaft journal reaches 35~40 HRC.

关 键 词：工具钢芯模 热处理工艺改进 水淬油冷 

分 类 号：TG162[金属学及工艺—热处理]