低碳钢高速线材的表面缺陷及冷镦开裂原因分析  

ANALYSIS OF SURFACE DEFECTS AND COLD-HEADING CRACKS OF LOW CARBON STEEL HIGH SPEED WIRES

作　　者：曾强国[1] 

机构地区：[1]安阳钢铁集团公司质量监督部,河南455004

出　　处：《理化检验（物理分册）》2005年第2期69-71,75,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：采用扫描电镜和能谱仪对低碳冷镦用高速线材表面缺陷进行了分析,同时对轧制中间料的缺陷和成品冷镦标准件开裂样品进行对照分析。结果表明,浇注和连铸过程的夹渣残留在坯料中极易在后序的加工中使成品表面产生裂纹,最终引起了冷镦开裂。In this paper, typical surface defects of low carbon steel high speed wires for cold-heading have been examined by using SEM and EDS. Comparing the defects of semi-product during rolling, with cold-heading cracks on parts, it was found that slag was included into steel during tapping and continuous casting and produced surface cracks on wire products, which lead to cold-heading cracks.

关 键 词：低碳钢 线材 冷镦 开裂 

分 类 号：TG356.4[金属学及工艺—金属压力加工]