Forming Characteristic Parameters and Dimension Control Principle on Weaving Multi-pass Additive Layer of Magnesium Alloy
LUO Xiaoyu1, FENG Yuehai1,*, ZHAO Xin1, LIU Siyu2
1 School of Material Science and Engineering, Nanjing University of Science & Technology, Nanjing 210094, China 2 Shanghai Aerospace Precision Machinery Institute, Shanghai 201600, China
Abstract: As the problem of low dimensional control accuracy in the multi-pass additive of AZ31B magnesium alloy, the surface flatness, the average height difference of the wave crests and the average height of the wave crests were defined to characterize the forming characteristics of the multi-pass additive layer. The regression models between the weaving parameters and the forming characteristic parameters were established by the response surface method. The effect of the weaving parameters on the forming characteristic parameters was analyzed, and the weaving parameters obtained through model were verified in practice. The results show that the surface flatness first increases and then decreases under the influence of the interactions. When the offset is larger than 11 mm, setting the weaving amplitude less than 3 mm or the residence time less than 0.3 s or the travel speed faster than 30 cm/min can make the average height difference of the wave crests tend to be the smallest. The average height of the wave crests is mainly affected by the residence time and the offset. The better weaving parameters obtained from the optimized models are the weaving amplitude of 2.56 mm, the weaving frequency of 2.5 Hz, the residence time of 0.3 s, the travel speed of 30 cm/min and the offset of 11.46 mm. The results of the verification experiment show that the surface flatness is 0.98. The average height difference of the wave crests is 0.03 mm, which accounts for 1.07% of the average height of the wave crests. The average height of the wave crests is (2.80±0.02) mm, the error between the target value is only 0.71%. The forming of the multi-pass additive layer has been optimized.
1 Sahu P K, Das J, Chen G Q, et al. Materials Science and Engineering: A, 2020, 774, 138889. 2 Guo Y Y, Quan G F, Jiang Y L, et al. Journal of Magnesium and Alloys, 2021, 9, 192. 3 Yang X, Liu J R, Wang Z N, et al. Materials Science and Engineering: A, 2020, 774, 138942. 4 Wang P, Zhang H Z, Zhu H, et al. Journal of Materials Processing Technology, 2021, 288, 116895. 5 Zhang Y P. Internal Combustion Engine & Parts, 2021(20),191 (in Chinese). 张玉平.内燃机与配件, 2021(20), 191. 6 Zhang C, Shen C, Li F, et al. Electric Welding Machine, 2020, 50(2), 53 (in Chinese). 张弛, 沈忱, 李芳, 等. 电焊机, 2020, 50(2), 53. 7 Fang X W, Bai H, Yao Y F, et al. Journal of Mechanical Engineering, 2020, 56(1), 141 (in Chinese). 方学伟, 白浩, 姚云飞, 等. 机械工程学报, 2020, 56(1), 141. 8 Li Y Z, Sun Y F, Han Q L, et al. Journal of Materials Processing Technology, 2018, 252, 838. 9 Quan G Z, Shi R J, Lu S, et al. Journal of Plasticity Engineering, 2020, 27(10), 203 (in Chinese). 权国政, 施瑞菊, 卢顺, 等. 塑性工程学报, 2020, 27(10), 203. 10 Yang H, Lyu Y M, Zhou W J, et al. Hot Working Technology, 2021, 50(7), 135 (in Chinese). 杨华, 吕彦明, 周文军, 等. 热加工工艺, 2021, 50(7), 135. 11 Wan Z D, Meng D Y, Zhao Y, et al. Journal of Manufacturing Processes, 2021, 67, 275. 12 Ma G C, Zhao G, Li Z H, et al. The International Journal of Advanced Manufacturing Technology, 2019, 101, 1275. 13 Li R S, Wang G L, Ding Y Y, et al. Additive Manufacturing, 2020, 36, 101546. 14 Ding Y R, Chen F R, Yang F, et al. Materials Reports, 2021, 35(2), 02103(in Chinese). 丁亚茹, 陈芙蓉, 杨帆, 等. 材料导报, 2021, 35(2), 02103. 15 Kong L, Zhou Y, Wang M, et al. Journal of Mechanical Engineering, 2021,57(10), 137(in Chinese). 孔谅, 周洋, 王敏, 等. 机械工程学报, 2021, 57(10), 137. 16 Sun J Y, Zhao Y, Yang L, et al. Journal of Manufacturing Processes, 2019,48, 51.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2023, Vol. 37 
