1Cr25Ni20Si2钢渗氮罐老化问题及处理方法  

Aging problem and counter method for 1Cr25Ni20Si2 steel nitriding tank

作　　者：朱瑞芳 米琇娟 Zhu Ruifang;Mi Xiujuan(Xi'an Coal Mining Machinery Co.,Ltd.,Xi'an Shaanxi 710200,China)

机构地区：[1]西安煤矿机械有限公司,陕西西安710200

出　　处：《金属热处理》2020年第7期228-230,共3页Heat Treatment of Metals

摘　　要：气体渗氮炉使用1Cr25Ni20Si2钢渗氮罐时,随着使用时间的增加,会出现老化现象,致使工艺无法进行。采用不同的方法解决老化问题时,发现使用装入工件在炉中进行数次高温回火的方法可有效退氮,解决炉罐的老化问题。When 1Cr25Ni20Si2 steel nitriding tank was used as a retort in a gas nitriding furnace,the aging phenomenon would occur with the increase of the nitriding time,resulting in that the nitriding of workpiece could not be carried out.Though many different methods were used to solve the aging problem,they were not effective enough,but it was found that high temperature tempering in the failed nitriding furnace could effectively denitrify and solve the aging problem of retort.

关 键 词：渗氮罐老化 氨分解率 高温回火 

分 类 号：TG155.7[金属学及工艺—热处理]