Research of CMT Cladding Welding on Ductile Cast Iron with Carbon SteelWelding Wire of H08Mn2Si
WEN Junxia1,2, CAO Rui2, LI Junpeng1, ZENG Maoyan1, CHEN Jing1
1 School of Mechanical and Electrical Engineering, Liuzhou Vocational & Technical College, Liuzhou 545005; 2 State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal, Lanzhou University of Technology, Lanzhou 730050
Abstract: Ductile cast iron is a ferrous alloy characterized by carbon-rich phase in the form of spheroidal, and usually be cladding welded with dissimilar materials to obtain the good surface performance. Complex process is required when welding dissimilar materials, for there are obstacles will be introduced by the different physical and chemical properties of the two dissimilar materials when welding them together. The most effective way to solve this problem is to reduce the heat input in welding process as much as possible. In this study, the CMT welding has been carried out to study the cladding welding on nodular cast iron QT400 by a feeding material of H08Mn2Si which is commonly used in carbon steel welding. The related phase transformation and migration of different elements across the partially melted zone (PMZ) have been investigated. Scanning electron microscope (SEM) was used to determine the microstructure and phase composition of the cladding layer and interfaces. Micro-hardness of the samples was evaluated after CMT cladding welding. The results reveal that CMT welding can primely realize the cladding welding on nodular cast iron with the feeding wire of H08Mn2Si. In addition, the heat affected zone (HAZ) of the overlaying welding seam is relatively small, and the transition of the major chemical elements and microhardness across the interface is relatively smooth. This study will expand the application fields of CMT welding and promote the development of ductile cast iron.
温俊霞, 曹睿, 李骏鹏, 曾茂燕, 陈璟. 球墨铸铁表面CMT堆焊H08Mn2Si焊丝的研究[J]. 材料导报, 2019, 33(Z2): 447-451.
WEN Junxia, CAO Rui, LI Junpeng, ZENG Maoyan, CHEN Jing. Research of CMT Cladding Welding on Ductile Cast Iron with Carbon SteelWelding Wire of H08Mn2Si. Materials Reports, 2019, 33(Z2): 447-451.
1 郭双桥,杨军,陈美玲.材料导报,2018,32(专辑31),358. 2 郑世卿,刘柱,单际国,等.焊接学报,2013,34(1),89. 3 Gouveia R M, Silva F J, Paiva O C, et al. Metals,2018,8,72. 4 于彬.热加工工艺,2012,41(21),192. 5 Lin C M, Chandra A S, Morales-Rivas L, et al. International Journal of Cast Metals Research,2014,27,378. 6 Węglowski M S, Błacha S, Phillips A. Vacuum,2016,130,72. 7 鄢君辉,赵康,王泓,等.热加工工艺,2000(5),24. 8 Furukawa K. Welding International,2006,20,440. 9 朱宇虹,耿志卿.电焊机,2011,41(4),69. 10 Schierl A. Welding in the World-london,2005,49(9),38. 11 曹睿,冯振,陈剑虹,等.焊接学报,2015,36(1),39.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2019, Vol. 33 
