1 School of Mechanical Engineering, Anhui Sanlian College, Hefei 230601, China 2 School of Mechanical and Electrical Engineering, Anhui Jianzhu University, Hefei 230601, China 3 College of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China
Abstract: There is no unified understanding about the mechanism of hump weld bead,research on the internal relationship between humping formation and the viscosity of molten pool is still lack of study. Based on the mechanical model, numerical simulation is used to study the mechanism quantitatively by considering the changing viscosity. And the influence of temperature, alloy element content, welding speed and power are considered on viscosity. Finally, an experiment is designed to verify the simulation. The results show that viscosity plays an important role in affecting temperature and pressure fields. And temperature field determines haunt of the hump, pressure field determines the size of the hump. Boundary temperature, welding moving speed, welding power and alloy element content in molten pool are positive relevance with humping formation.
朱永刚, 左延红, 程桦, 邵正香. GMAW驼峰形成机理中熔池粘度影响的量化研究[J]. 材料导报, 2020, 34(Z2): 469-475.
ZHU Yonggang, ZUO Yanhong, CHENG Hua, SHAO Zhengxiang. Quantitative Study on the Humping Formation Mechanism of GMAW with Consideration of Varying Viscosity in Molten Pool. Materials Reports, 2020, 34(Z2): 469-475.
1 叶定剑,华学明,吕艳丽,等.热加工工艺,2011,11(11),148. 2 Wu Dongsheng, Hua Xueming, Ye Dingjian, et al.International Journal of Heat and Mass Transfer, 2017,104(1), 634. 3 胡志坤.高速GMAW焊接驼峰焊道的产生过程及抑制.硕士学位论文,山东大学,2009. 4 陈姬,武传松. 金属学报,2009,45(9),1070. 5 Lin M L, Eagar T W.Welding Journal, 1985,64(6),163. 6 Kothe D B, Mjolsness R C. American Institute of Aeronautics and Astronautics Journal, 1992,30(11),2694 . 7 武传松.焊接热过程与熔池形态,机械工业出版社,2008. 8 雷永平,村川英一. 西安交通大学学报,1999,33(5),70. 9 子澍,吴国蔚,陈桂蓉. 铸造技术,2009,30(3),315. 10 李洪桂. 冶金原理, 科学出版社, 2018. 11 张建良,韦勐方,国宏伟,等. 北京科技大学学报,2013,35(8),994. 12 陶汪,陈彦宾,李俐群,等.全属学报,2008,44(9),131. 13 Frank S. Crawford Jr.著,卢鹤绂等,译.伯克利物理学教程(第三卷下册),机械工业出版,2016.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2020, Vol. 34 
