| 低合金热装轧制钢板表面裂纹控制实践 |
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| 引用本文： | 方恩俊,崔福祥,康伟,廖相巍. 低合金热装轧制钢板表面裂纹控制实践[J]. 鞍钢技术, 2015, 0(1): 56-59. DOI: 10.3969/j.issn.1006-4613.2015.01.013 |
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| 作者姓名： | 方恩俊 崔福祥 康伟 廖相巍 |
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| 作者单位： | 鞍钢股份有限公司鲅鱼圈钢铁分公司,辽宁营口,115007;鞍钢集团钢铁研究院,辽宁鞍山,114009 |
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| 摘 要： | 分析了低合金钢连铸坯热装轧制时钢板表面晶界裂纹缺陷产生的原因。根据入炉前铸坯表面温度及相应的冷却制度,进行了工业试验。试验结果表明,入炉前铸坯表面温度小于450℃或大于750℃时不产生晶界裂纹。采取下线冷却工艺后,低合金钢厚铸坯轧后的晶界裂纹从原来的27.3%降低到0。
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| 关 键 词： | 低合金钢 连铸坯 晶界裂纹 |
Practice of Controlling Surface Cracks of Low Alloy Steel Sheets by Rolling Hot Charging Slabs |
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| Fang Enjun,Cui Fuxiang,Kang Wei,Liao Xiangwei. Practice of Controlling Surface Cracks of Low Alloy Steel Sheets by Rolling Hot Charging Slabs[J]. Aisc Techniques, 2015, 0(1): 56-59. DOI: 10.3969/j.issn.1006-4613.2015.01.013 |
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| Authors: | Fang Enjun Cui Fuxiang Kang Wei Liao Xiangwei |
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| Abstract: | The causes leading to grain boundary cracks occurred on the surface of low alloy steel sheets by rolling hot charging continuous casting slabs are analyzed. Industrial experiments are carried out according to the surface temperature of the slabs prior to entering the reheating furnace and the corresponding cooling schedule. The testing results show that the cracks can be avoided when the surface temperature of the slabs prior to entering the reheating furnace is less than 450℃or more than 750℃. The percentage of cracks is reduced to 0 from 27.3% after using off-line cooling process. |
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| Keywords: | low alloy steel continuous casting slab grain boundary crack |
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