堆内构件用不锈钢埋弧焊丝焊剂的国产化应用研究  

Research on the Domestication of Stainless Steel Submerged Arc Welding Wire and Flux for In-Pile Components

作　　者：蒋兴钧[1] 王庆田[1] 杜华[1] 付光杰 浦春梅 JIANG Xingjun;WANG Qingtian;DU Hua;FU Guangjie;PU Chunmei(Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu 610213,China;Dongfang Electric(Wuhan)Nuclear Equipment Co.,Ltd.,Wuhan 430200,China)

机构地区：[1]中国核动力研究设计院核反应堆系统设计技术重点实验室,四川成都610213 [2]东方电气(武汉)核设备有限公司,湖北武汉430200

出　　处：《电焊机》2024年第12期126-131,共6页Electric Welding Machine

摘　　要：目前国内堆内构件吊篮筒体的纵缝与环缝主要采用埋弧自动焊焊接,所用焊材均为进口焊材,因此国产化不锈钢焊丝-焊剂的应用研究十分重要。本研究通过试板焊接验证国产焊材的综合性能,包括力学性能、工艺性能,并与进口焊材进行对比分析。结果表明,国产不锈钢埋弧焊丝焊剂(CHW-308LHRN+CHF601HR)在室温力学性能上略优于进口焊材,高温力学性能相当,δ铁素体含量与进口焊材相当,耐晶间腐蚀性能同样优秀。此外,国产焊材的焊接工艺性能虽与进口焊材存在少许差异,但已能满足使用要求。因此,国产不锈钢埋弧焊丝焊剂可以用于堆内构件主体焊缝的焊接,具有广阔的市场前景和应用潜力。At present,the longitudinal and circular seams of the in-vessel components hoisting cylinder body are mainly welded by submerged arc automatic welding,and all the welding materials used are imported welding materials,so the appli‐cation research of domestic stainless steel welding wires and welding flux is very important.This study verifies the compre‐hensive properties of domestic welding materials through plate welding tests,including mechanical properties and process properties,and compares them with imported welding materials.The results show that the mechanical properties of domestic stainless steel submerged arc welding wires and flux at room temperature are slightly better than those of imported welding materials,the high-temperature mechanical properties are comparable,theδ-ferrite content is similar to that of imported welding materials,and the intergranular corrosion resistance is also excellent.In addition,although there are some differ‐ences in the welding process performance of domestic welding materials compared with imported ones,they can meet the us‐age requirements.Therefore,domestic stainless steel submerged arc welding wires and flux can be used for the welding of the main seams of in-vessel components,with broad market prospects and application potential.

关 键 词：反应堆 堆内构件 不锈钢焊材 埋弧焊 国产化 

分 类 号：TG422[金属学及工艺—焊接]