高Si含量耐磨钢热轧钢带表面质量优化  

Optimization of Surface Quality of High Si Content Wear Resistant Steel Hot Rolled Strip

作　　者：田智文 任树洋 冯晓勇 杨志南 Tian Zhiwen;Ren Shuyang;Feng Xiaoyong;Yang Zhinan(School of Metallurgy and Energy,North China University of Science and Technology,Tangshan Hebei 063210,China;National Engineering Research Center for Equipment and Technology of C.S.R,Yanshan University,Qinhuangdao Hebei 066004,China;Tangshan Iron and Steel Group Co.,Ltd.,Tangshan Hebei 063000,China)

机构地区：[1]华北理工大学冶金与能源学院,河北唐山063210 [2]燕山大学国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004 [3]唐山钢铁集团有限责任公司,河北唐山063000

出　　处：《山西冶金》2024年第8期209-211,共3页Shanxi Metallurgy

摘　　要：通过对河钢唐钢高Si含量NM300热轧钢进行化学成分、表面缺陷形貌及特征分析,初步推断NM300表面色差形成的主要原因是Si含量高,导致在加热和轧制的过程中形成铁橄榄石相Fe_(2)SiO_(4)造成的。通过优化板坯加热时间、粗轧除磷温度及制度,能够有效地控制缺陷疏松颗粒层的厚度,有利于除鳞打击时裂纹扩展至基体,从而完全去除表面质量缺陷。By analyzing the chemical composition,surface defect morphology,and characteristics of high Si content NM300 hot-rolled steel from HBIS Tangsteel,it is preliminarily inferred that the main reason for the formation of color difference on the surface of NM300 is the high Si content,which leads to the formation of iron olivine phase Fe_(2)SiO_(4) during heating and rolling.By optimizing the heating time of the slab,the temperature and system of coarse rolling phosphorus removal,the thickness of the defect loose particle layer can be effectively controlled,which is conducive to the crack propagation to the substrate during descaling and impact,thereby completely removing surface quality defects.

关 键 词：高Si NM300 表面 铁橄榄石 

分 类 号：TG335.11[金属学及工艺—金属压力加工]