圆钢加工开裂形成原因分析与控制措施研究  

Analysis of Cracking Causes and Control for Cracking of Round Steel

作　　者：田景云 曹发卫 朱道良 韩晓欢 Tian Jingyun;Cao Fawei;Zhu Daoliang;Han Xiaohuan(Anhui Shougang Dachang Metal Material Co.,Ltd.,Liuan Anhui 237462,China)

机构地区：[1]安徽首矿大昌金属材料有限公司,安徽六安237462

出　　处：《山西冶金》2024年第7期21-23,共3页Shanxi Metallurgy

摘　　要：针对圆钢加工表面开裂问题,通过冷镦实验、金相组织分析、电镜断口形貌分析及EDS夹杂物分析,并进行现场工艺调整及生产跟踪,找到了圆钢表面缺陷工艺遗传规律。研究表明,圆钢表面裂纹是铸坯存在皮下气泡或表面针孔缺陷遗传,后续在轧制过程中发生破裂及扩展所致。通过优化炼钢和轧制工艺,圆钢表面质量大幅提升,具有一定的借鉴作用。In view of the problem of cracking on the surface of round steel processing,through cold heading experiment,metallographic structure analysis,electron microscope fracture morphology and EDS inclusion analysis,and on-site process adjustment and production tracking,the genetic law of round steel surface defect process was found,and the results showed that the surface crack of round steel was caused by the existence of subcutaneous bubbles or surface pinhole defects in the casting billet,and the subsequent rupture and expansion in the rolling process.

关 键 词：圆钢 冷镦开裂 气泡 脱氧 

分 类 号：TG335.62[金属学及工艺—金属压力加工]