SS400B热轧带钢四次氧化铁皮成因分析及控制
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摘要
针对厚规格(h≥8 mm)SS400B热轧带钢用户开平后出现黑色起粉问题,从板坯规格、轧制温度、轧制速率以及轧后冷却过程等方面详细分析了其氧化铁皮形成原因,通过提高轧制速率、降低卷取温度、将钢卷放置通风处等措施,减少了氧化铁皮残留和四次氧化铁皮的形成,解决了卷取后带钢表面氧化铁皮起粉问题。
Aimed at the black powder on the thick gauge(above 8 mm) SS400B strip surface after levelling process,the causes were analyzed in the way of slab specifications,rolling temperature,rolling speed and cooling process after rolling.Based on it,the measures of increasing rolling speed,decreasing coiling temperature and placing the coil in open air were put into practice,so the residual scale and the fourth scale were reduced,and the black powder problem was resolved.
Aimed at the black powder on the thick gauge(above 8 mm) SS400B strip surface after levelling process,the causes were analyzed in the way of slab specifications,rolling temperature,rolling speed and cooling process after rolling.Based on it,the measures of increasing rolling speed,decreasing coiling temperature and placing the coil in open air were put into practice,so the residual scale and the fourth scale were reduced,and the black powder problem was resolved.
引文
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[13] 石杰.热轧碳钢表面氧化皮结构、机械研磨酸洗及无酸酸洗研究[D].北京:北京科技大学,2008.
[2] 郭晓波,钟莉莉,王锐,等.HQ460热轧带钢粉状氧化铁皮形成原因及消除措施[J].鞍钢技术,2009(2):44.
[3] 中村峻之,佐藤始夫.厚板の高温酸化スヶヘル性状じ及ばすSi,Mn,Cの影响[J].铁と钢,1994,180(3):61.
[4] 韩斌,刘振宇,杨奕,等.轧制过程表面氧化层控制技术的研发应用[J].轧钢,2016,33(3):49.
[5] 夏先平,何晓明,孙业中,等.三次氧化铁皮缺陷的成因分析 [J].宝钢技术,2002(4):33.
[6] 魏天斌.热轧氧化铁皮的成因及去除方法[J].钢铁研究,2003,32(4):54.
[7] Torrcsam,Colasr.A model for heat conduction through the oxide layer of steel during hot rolling [J].Material of Process and Technologiy,2000,105(3):258.
[8] 余伟,王俊,刘涛.热轧钢材氧化及表面质量控制技术的发展及应用[J].轧钢,2017,34(3):1.
[9] 孙彬,曹光明.热轧高强钢氧化铁皮演变规律的研究[J].钢铁,2010,45(11):53.
[10] 王畅,于洋,李文远,等.SPA-H钢高温氧化膜生长机理研究[J].轧钢,2017,34(5):6.
[11] Morales M,Chimenos J M,Espiell F,et al.The effect of temperature on mechanical properties of oxide scales formed on a carbon steel in a simulated municipal solid waste incineration environment[J].Surface & Coatings Technology,2014(238):51.
[12] 许斐范,许静,刘立伟,等.510L氧化层物相组成、结构与耐蚀性关系的研究[J].轧钢,2018,35(6):19.
[13] 石杰.热轧碳钢表面氧化皮结构、机械研磨酸洗及无酸酸洗研究[D].北京:北京科技大学,2008.
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