工艺参数对带极单层电渣堆焊层成分、成形及性能的影响  

Effect of process parameters on composition,forming and properties of single-layer electro-slag strip cladding

作　　者：徐锴 冯伟 邹力维 陈波 韩宇 Xu Kai;Feng Wei;Zou Liwei;Chen Bo;Han Yu(Harbin Welding Institute Limited Company,Harbin 150028,China;Harbin Well Welding Co.,Ltd.,Harbin 150028,China)

机构地区：[1]哈尔滨焊接研究院有限公司,哈尔滨150028 [2]哈尔滨威尔焊接有限责任公司,哈尔滨150028

出　　处：《焊接》2019年第12期32-36,I0027,共6页Welding & Joining

基　　金：国家重点研发计划重点专项(2017YFB0305303)。

摘　　要：针对加氢反应器部件的焊接,采用单层电渣堆焊技术和国产焊带与焊剂,研究了堆焊工艺参数对堆焊层成分、成形及性能的影响。分析了4.0~4.5 mm,4.5~5.0 mm,5.0~5.5 mm,5.5~6.0 mm等四种厚度的堆焊层中主要合金元素的含量,以及分析了距离母材表面0.5 mm及以上的堆焊层金属中合金成分的分布特点及稳定性。测试了不同厚度堆焊层中铁素体含量及其分布特点,控制堆焊层厚度为4.0~5.5 mm可以满足铁素体含量3~8 FN的技术要求。在合适的工艺参数范围内,堆焊层表面成形良好无缺陷,化学成分、铁素体含量及侧弯性能均满足技术要求。Using single-layer electro-slag strip cladding technology and domestic welding strip and agglomerated flux,effects of welding parameters on thickness,chemical composition,forming and mechanical properties of the cladding layer were tested for welded parts of the hydrogenation reactor.Contents of main alloying elements in four different thickness weld overlays of 4.0~4.5 mm,4.5~5.0 mm,5.0~5.5 mm,5.5~6.0 mm were analyzed,and distribution characteristics and stability of alloy components in the cladding layer with distance of 0.5 mm and above from base metal surface were analyzed.Ferrite content and distribution characteristics of cladding layers with different thickness were tested.Thickness of the cladding layer was 4.0~5.5 mm to meet the technical requirements of ferrite content of 3~8 FN.Within the range of suitable process parameters,the surface of the cladding layer was well formed without defects,and chemical composition,ferrite content and side bending performance all met the technical requirements.

关 键 词：带极单层电渣堆焊 化学成分 铁素体 堆焊层厚度 工艺评定 

分 类 号：TG448[金属学及工艺—焊接]