摘要
为了解决GCr15轴承钢连铸坯表面渣沟缺陷的问题,系统分析了所用保护渣的理化性能,以改善保护渣的熔化与润滑效果为出发点提出两种保护渣解决方案,并进行了工业试验。试验结果表明,采用低黏度、低熔点、烧结性能适宜的保护渣对改善铸坯渣沟缺陷效果显著。1 300℃时,保护渣高温黏度由0.35~0.55降低到0.15~0.25Pa·s,熔点由1 180~1 220降低到1 060~1 110℃,消耗量从0.27提到至0.35kg/t(钢),铸坯表面渣沟缺陷得到解决。
To solve the problem of slag-scratch defect on the surface of GCr15 steel strand continuous casting billet,the physical and chemical properties of the mold flux were systematically analyzed,and two solutions were proposed to improve the melting and lubrication of mold flux,and industrial trials were conducted to test the effect of mold slag.The viscosity of the mold flux at 1 300℃ was reduced from 0.35-0.55 to 0.15-0.25 Pa·s,the melting point was lowered from 1 180-1 220 to 1 060-1 110 ℃,the slag consumption of steel was increased from 0.27 to 0.35 kg/t(steal),and the slag-scratch defect was eliminated.
作者
李权辉
陶镳
徐志祥
周剑
王强强
何生平
LI Quan-hui;TAO Biao;XU Zhi-xiang;ZHOU Jian;WANG Qiang-qiang;HE Sheng-ping(Research Institute,Nanjing Iron and Steel Co.,Ltd.,Nanjing 210044,Jiangsu,China;School of Materials Science and Engineering,Chongqing University,Chongqing 400044,China)
出处
《连铸》
2021年第1期55-58,65,共5页
Continuous Casting
关键词
轴承钢
连铸
保护渣
渣沟缺陷
黏度
bearing steel
continuous casting
mold slag
slag-scratch defect
viscosity
