Materials Reports  2020, Vol. 34 Issue (Z2): 469-475 |
| METALS AND METAL MATRIX COMPOSITES |
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| Quantitative Study on the Humping Formation Mechanism of GMAW with Consideration of Varying Viscosity in Molten Pool |
| ZHU Yonggang1,2, ZUO Yanhong1,2, CHENG Hua3, SHAO Zhengxiang1
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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 |
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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.
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Published: 08 January 2021
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| Fund:This work was financially supported by Anhui Provincial University Natural Science Research Project of Department of Education (KJ2017A523);Anhui Provincial University Quality Engineering Project (2016jyxm0336); Anhui Provincial Innovation Training Program (201910959067). |
| About author:: Yonggang Zhu received a master's degree in mechanical design and theory from Hefei University of technology in July, 2006, and is an associate professor of Anhui Sanlian University. He has been selected into the first “talent pool” projects in Hefei 2017. As the first author, he has published more than 20 papers in domestic and foreign academic journals, applied 5 national invention patents, and 2 of them were authorized. His research interests focus on tribology design and its application on welding. |
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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. |
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