| 保护渣物性对圆坯表面纵裂的影响 |
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| 引用本文： | 耿继双,于守巍,朱晓雷,李泽林,齐志宇.保护渣物性对圆坯表面纵裂的影响[J].鞍山科技大学学报,2014(2):159-162. |
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| 作者姓名： | 耿继双 于守巍 朱晓雷 李泽林 齐志宇 |
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| 作者单位： | 鞍钢股份有限公司技术中心;鞍钢股份有限公司炼钢总厂; |
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| 摘 要： | 为了防止圆坯在生产过程中产生纵裂问题,研究了5种保护渣的熔点、熔速、粘度和成分等对规格为φ150 mm的20#圆坯表面纵裂的影响。结果表明：熔速适中、熔点小于1 165℃、粘度约为0.3 Pa·S的连铸保护渣对该钢种减少表面纵裂有利。该钢种保护渣中的w（）C=7%~13%和w（Al）2O3=3%~4.5%时纵裂发生率低。
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| 关 键 词： | 圆坯 表面纵裂 保护渣 |
Influence of mold powders on surface longitudinal crack of round billet |
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| Institution: | GENG Jishuang, YU Shouwei, ZHU Xiaolei, LI Zelin, QI Zhiyu ( 1.Technology Center, Angang Steel Company Limited,Anshan 114001, China; 2.General Steelmaking Plant, Angang Steel Company Limited, Anshan 114021, China) |
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| Abstract: | In order to prevent the longitudinal crack problem happened in the production process of the round billet,the influences on the longitudinal surface crack of the φ150mm round billet are analyzed,such as melting point,melting rate,viscosity and ingredient. The results show that the mold powder with the moderate melting speed,melting point lower than 1 165 ℃ and viscosity in 0.3 Pa·S is better for reducing the surface longitudinal crack. When the mold powder protection w（C） and w（Al2O3） are in the range of 7% to 13% and3% to 4.5% respectively,the longitudinal crack can be restrained. |
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| Keywords: | round billet surface longitudinal crack mold powder |
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