ER50-6热轧盘条拉拔断裂原因分析  

Analysis of Drawing Fracture of ER50-6 Hot-rolled Wire Rod

作　　者：岳好明 王刚[1] 薛俊峰[1] 陈明[1] 杨灵敏[1] 

机构地区：[1]日照钢铁有限公司,日照276806

出　　处：《理化检验（物理分册）》2013年第1期59-60,63,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：规格5.5mm的ER50-6热轧盘条拉拔至2.2mm时出现了断丝现象,断丝部位附近存在较多的表面裂纹。通过金相检验和扫描电镜微区分析等方法对拉拔断裂的原因进行了分析。结果表明:连铸坯皮下卷渣造成盘条表面局部增碳,增碳区珠光体含量较基体明显偏高,塑性、韧性下降,拉拔时沿增碳区发生断裂。ER50 6 hot-rolled wire rod was fractured when drawing from 45.5 mm to 42. 2 ram, there were caused by slag entrapment defect of continuous casting billet, and the peartite was obvious higher than matrix, the plasicity and toughness were reduced. At last it was fractured alone the carburetion area in the process of drawing.

关 键 词：热轧盘条 卷渣 局部增碳 拉拔断裂 

分 类 号：TG356.4[金属学及工艺—金属压力加工]