氮基气氛淬火对脱碳品的挽救  

Remedy Treatment for Decarburized Products in Nitrogen-base Atmosphere

作　　者：王秀艳 张艳华 杨春泉[1] 

机构地区：[1]瓦房店轴承集团公司,辽宁瓦房店116300

出　　处：《轴承》2000年第8期6-7,共2页Bearing

摘　　要：针对2 5mm、长度 50mm圆锥滚子淬火脱碳的原因进行了分析 ,在原淬火工艺及DRES90 / 80 0辊底炉热处理工艺的基础上 ,减少淬火时的装炉量 ,延长淬火节拍 ,总的淬火加热时间增加 ,并严格控制炉内氮基气氛和露点 ,则可对上述脱碳的滚子进行挽救 ,使其表面、心部的硬度、金相组织及表面质量等达到工艺技术条件的要求。附图 1幅 ,表 6个。The article analyses the reasons why decarbonization occured during quenching of tapered rollers with a length of 50mm and a radius of 25mm. Based on the original quenching and heat treatment in DRES90/800 roller hearth furance, the above mentioned decarbonized rollers can be remedied by reducing furance burdening during quenching, by prolonging quenching rhythm to increase the total heating time and by strictly controlling furance nitroatmosphere and dew point. As a result, surface and core hardness, microstructure and surface quality can all meet technical requirements.

关 键 词：圆锥滚子 脱碳 氨基气氛淬火 

分 类 号：TG162.71[金属学及工艺—热处理] TG156.35[金属学及工艺—金属学]