摘要
以钢锭成材120 mm厚Q345GJB-Z35钢板探伤不合格部位为研究对象,凭借金相显微镜、万能拉伸试验机、扫描电镜及能谱仪等检测手段,从金相组织、非金属夹杂物、拉伸断口等方面对探伤不合格原因展开分析研究。结果表明:钢板厚度1/2处存在以Al2O3为主的较大尺寸脱氧产物夹杂物,是导致钢板探伤不合格的主要原因。据此提出相应的改进措施,以提高钢板的探伤合格率。
Taking ultrasonically disqualified area of 120 mm thick Q345GJB-Z35 steel plate from ingot as research object,the disqualification causes of ultrasonic detection is studied and analyzed from metallographic structure,non-metallic inclusion and tensile fracture by means of metallographic microscope,universal tensile testing machine,SEM and EDS.The results show that the large sized non-metallic inclusions of Al 2O 3 at 1/2 plate thickness position are the major causes of disqualified steel plate in ultrasonic flaw detection.Relevant measures are taken to improve the qualification rate of steel plate in ultrasonic flaw detection.
作者
付冬阳
付振坡
田志强
王晓刚
王会岭
Fu Dongyang;Fu Zhenpo;Tian Zhiqiang;Wang Xiaogang;Wang Huiling(HBIS Group Wusteel Company)
出处
《宽厚板》
2018年第6期30-33,共4页
Wide and Heavy Plate
