汽车工程机械用钢表面“黑灰”原因分析与改进  

CAUSE ANALYSIS AND IMPROVEMENT OF"BLACK ASH"ON STEEL SURFACE FOR AUTOMOBILE CONSTRUCTION MACHINERY

作　　者：申保军 饶静[2] 杨立庆[2] 王超海[2] Shen Baojun;Rao Jing;Yang Liqing;Wang Chaohai(Anyang Iron and Steel Stock Co.,Ltd)

机构地区：[1]安阳钢铁股份有限公司第二炼轧厂,河南安阳455004 [2]安阳钢铁股份有限公司,河南安阳455004

出　　处：《河南冶金》2020年第6期17-18,56,共3页Henan Metallurgy

摘　　要：针对汽车工程机械用钢表面的"黑灰"问题,指出热连轧精轧工序产生的三次氧化铁皮是缺陷产生的原因,并分析了不同成分氧化铁皮对表面质量的影响。在此基础上,通过降低精轧机入口温度、提升轧制速度、改善机架间除鳞的方式,减少了氧化铁皮,提升了表面质量。In view of the problem of"black ash"in the steel used for automobile construction machinery,this paper points out that the triple scale produced in the finishing rolling process of hot continuous rolling is the cause of the defect,and the effect of oxide scale with different composition on the surface quality is analyzed.On this basis,the surface quality is improved by reducing the inlet temperature of the finishing mill,increasing the rolling speed and improving the descaling way between stands.

关 键 词：汽车工程机械用钢 黑灰 三次氧化铁皮 

分 类 号：TG335.1[金属学及工艺—金属压力加工]