压力容器用钢板卷制开裂失效原因分析  

Analysis of cracking failure cause of rolled steel plate for pressure vessel

作　　者：金彦枫[1,2] JIN Yanfeng(Lanpec Technologies Limited,Lanzhou 730070,China;Shanghai Lanbin Petrochemical Equipment Co.,Ltd.,Shanghai 201518,China)

机构地区：[1]甘肃蓝科石化高新装备股份有限公司,兰州730070 [2]上海蓝滨石化设备有限责任公司,上海201518

出　　处：《压力容器》2021年第9期66-73,共8页Pressure Vessel Technology

基　　金：甘肃蓝科石化高新装备股份有限公司2020年科技发展基金项目(LB_20ZZJD005)。

摘　　要：对两例钢制材料在压力容器制造厂进行筒节卷制过程中,均沿宽度方向发生开裂的问题进行了分析。材料入厂均进行过超声波无损检测复验和尺寸外观检测,未发现问题。通过宏观检测、化学成分分析、金相组织分析、硬度检测、断口分析等多种手段对卷制开裂进行失效分析,结果表明,易忽视的原材料表面缺陷是失效原因之一,制造过程的工艺控制为失效的主要原因。Two cases of steel material cracking along the width direction in the same manufacturing process of cylinder section rolling in the pressure vessel factory were analyzed.Ultrasonic inspection and appearance inspection were carried out in the factory for all incoming materials,and no problem was found;The rolling cracking was analyzed by macro inspection,chemical composition analysis,metallographic structure analysis,hardness inspection,fracture analysis and other means.The results show that the original surface defect of raw materials is one of the failure causes,and the process control of manufacturing process is the main cause of failure.

关 键 词：压力容器用钢板 卷制开裂 表面缺陷 失效分析 

分 类 号：TH142.2[一般工业技术—材料科学与工程] TB301[机械工程—机械制造及自动化]