20CrMnTiH齿轮钢不同脱氧、钙处理工艺试验研究  

Experimental Study on Different Deoxidation and Calcium Treatment Processes of Gear Steel

作　　者：胡玉军 Hu Yujun(Fujian Sansteel Minguang Co.,Ltd.,Sanming 365000,Fujian)

机构地区：[1]福建三钢闽光股份有限责任公司,福建三明365000

出　　处：《福建冶金》2022年第4期24-28,共5页Fujian Metallurgy

摘　　要：本文针对三钢VD炉20CrMnTiH齿轮钢轧材B类非金属夹杂物级别较高甚至超标的问题,开展了不同脱氧、钙处理等工艺优化试验。研究结果发现LF炉使用碳化硅脱氧,冶炼过程低铝控制以及轻钙处理工艺,可一定程度降低铸坯中尺寸大于30μm夹杂物数量,从而降低轧材B类非金属夹杂物级别。In this paper, aiming at the problem that B-type non-metallic inclusions in the rolled stock of 20 CrMnTiH gear steel produced by Sangang Minguang Co.,Ltd is high or even exceeds the standard, the optimization tests of different deoxidization and calcium treatment processes are carried out.The results show that using SiC deoxidation in LF refining furnace, low Al controlling in smelting process, and light calcium treatment process can decrease the number of inclusions with size greater than 30 μm in the billet, so as to reduce the grade of B-type non-metallic inclusions in rolled stock.

关 键 词：非金属夹杂物 碳化硅脱氧 铝脱氧 铸坯全氧 

分 类 号：TF703[冶金工程—钢铁冶金]