| 连铸保护渣对GCr15轴承钢铸坯渣沟缺陷的影响 |
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| 引用本文： | 李权辉,陶镳,徐志祥,周剑,王强强,何生平.连铸保护渣对GCr15轴承钢铸坯渣沟缺陷的影响[J].连铸,2021,40(1):55-58. |
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| 作者姓名： | 李权辉 陶镳 徐志祥 周剑 王强强 何生平 |
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| 作者单位： | 1.南京钢铁股份有限公司研究院, 江苏 南京 210044;
2.重庆大学材料科学与工程学院, 重庆 400044 |
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| 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。
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| 关 键 词： | 轴承钢 连铸 保护渣 渣沟缺陷 黏度 |
Effect of mold slag on slag-scratch on continuous casting billet of GCr15 bearing steel |
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| LI Quan-hui,TAO Biao,XU Zhi-xiang,ZHOU Jian,WANG Qiang-qiang,HE Sheng-ping.Effect of mold slag on slag-scratch on continuous casting billet of GCr15 bearing steel[J].CONTINUOUS CASTING,2021,40(1):55-58. |
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| Authors: | LI Quan-hui TAO Biao XU Zhi-xiang ZHOU Jian WANG Qiang-qiang HE Sheng-ping |
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| Affiliation: | 1. Research Institute, Nanjing Iron and Steel Co., Ltd., Nanjing 210044, Jiangsu, China;
2. School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China |
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| Abstract: | 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. |
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| Keywords: | bearing steel continuous casting mold slag slag-scratch defect viscosity |
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