操作因素对E308-16焊条熔敷金属抗裂性的影响  

Influence of operation factors on E308-16 electrode deposited metal anti-cracking

作　　者：王杭安 

机构地区：[1]锦州锦泰金属工业有限公司,辽宁锦州121016

出　　处：《电焊机》2008年第7期20-22,共3页Electric Welding Machine

摘　　要：从操作因素出发,通过调整电弧长度和焊接电流,对不锈钢E308-16焊条的抗裂性进行了研究,对熔敷金属的化学成分、铁素体含量以及微观金相进行了检测和分析,发现随着电弧长度的增加,熔敷金属中的铁素体形成元素Cr含量减少,而奥氏体形成元素Ni和N增加,导致熔敷金属的铁素体含量明显降低,铁素体形态发生明显变化,同时晶界也发生较大的改变,最终其抗裂性变差。随着焊接电流的增加,熔敷金属中的Cr氧化烧损增加,铁素体含量有下降的趋势,熔敷金属的抗裂性能下降。通过分析,从操作因素方面,提出了在实际生产中提高E308-16焊条抗裂性的有效措施。In this paper,through the operation factors,study on the anti-cracking of the E308-16 stainless steel electrode by adjusting the arc length and welding current,checking and analyzing chemical composition,ferrite and micrographic of deposited metal,the test result were showed that arc length is increase,that Cr content of deposited metal is fall down,Ni and N content is increase, Ferrite content is prominent reduce, ferrite state and boundary are changed too.With welding current is increasing,Cr content of deposited metal is reduced,Ferrite content is reduced,anti-cracking is decreased.Through analyzing,put forward corresponding measures of improve E308-16 electrode anti-cracking for the operation factors.

关 键 词：奥氏体 铁素体 电弧长度 焊接电流 热裂纹 

分 类 号：TG422.1[金属学及工艺—焊接]