摘要
以EH36钢为实验研究对象,分析了EH36钢自动化立焊后焊缝热影响区的组织形貌,探索了EH36钢再热作用对焊缝组织的影响,同时对EH36钢焊缝硬度进行了测量。结果表明,EH36钢焊缝附近热影响区可以分为过热区、完全正火区和不完全正火区。EH36钢焊缝两侧热影响区的硬度值明显大于EH36钢焊缝和母材的硬度值,第二层硬度值的平均值整体高于自动化立焊的硬度值。
Taking EH36 steel as research object, the microstructure of welding heat affected area of EH36 steel after automatic vertical welding was studied, and the hardness of welding joint was tested. The results show that the heat affected zone of EH36 steel can be divided into overheated zone, completely normalized zone and incompletely normalized zone. The hardness value on both sides of weld heat affected zone of EH36 steel is greater than the parent metal hardness value, the average value of second layer hardness is higher than that of automatic vertical welding.
出处
《铸造技术》
CAS
北大核心
2014年第11期2677-2679,共3页
Foundry Technology
关键词
自动化立焊工艺
焊缝组织
再热作用
automatic vertical welding process
welding joint microstructure
reheat effect
