大型铸钢件正火保温时间的研究  

Study on normalizing holding time of large casting steel castings

作　　者：李文辉 马进 冯周荣 纳学洋 魏欢 LI Wenhui;MA Jin;FENG Zhourong;NA Xueyang;WEI Huan(Kocel Steel Foundry Co.,Ltd.,Yinchuan 750021,Ningxia China)

机构地区：[1]共享铸钢有限公司,宁夏银川750021

出　　处：《中国铸造装备与技术》2020年第1期54-57,共4页China Foundry Machinery & Technology

摘　　要：经试验研究,大型铸钢件正火过程中,相对原来的较长时间保温,缩短保温时间甚至零保温,铸件的强度和塑韧性有明显的提高,且全部力学性能指标都符合铸件材料标准要求。同时,达到了节能降耗,提高生产力的效果。After experimental research,during the normalizing process of large-scale steel castings,by shortening the heat preservation time or even zero heat preservation,the strength and plastic toughness of the casting have been significantly improved,and all the mechanical performance indicators are consistent with the casting material standard requirement.At the same time,the effect of saving energy and reducing consumption and improving productivity has been achieved.

关 键 词：铸钢件 正火 保温时间 零保温 

分 类 号：TG161[金属学及工艺—热处理]