Abstract: In this work, the CMT-P composite arc additive manufacturing nickel base alloy GH4169 was studied. The process parameters such as wire feeding speed, welding speed and pulse number were considered comprehensively, and the forming quality such as distortion and forming accuracy was taken as the evaluation index. The process parameters were optimized by using the central composite response surface method. The regression model of distortion and forming accuracy was established, and the monomer and interaction effects of process parameters on forming quality were analyzed. The results show that the most significant factor affecting the amount of distortion is the wire feed speed, followed by the number of pulses, and the welding speed has the least influence. The influence of pulse number on forming accuracy is obviously greater than that of wire feeding speed and welding speed, and the interaction between wire feeding speed and pulse number is significant. Based on the comprehensive optimization objective, the optimal parameter combination is obtained: wire feed speed 3.5 m/min, welding speed 5.8 mm/s, pulse number 30. The relative errors of distortion amount and forming precision are 10.3% and 4%, respectively, which shows that the model is correct.
作者简介: 郭志永,中国民航大学航空工程学院讲师、硕士研究生导师。2012年9月于河北工业大学获得工学学士学位,2014年9月、2018年1月分别于天津大学获得硕士学位和博士学位。目前主要从事精密加工技术与装备、增材制造等方面的研究工作。发表论文 20 余篇,包括 Mechanical Systems and Signal Processing、Applied Surface Science、International Journal of Mechanical Sciences、Journal of Manufacturing Processes等。
引用本文:
郭志永, 李猛, 张志强, 路学成, 张天刚, 曹轶然. 基于响应面法的镍基高温合金GH4169电弧增材工艺优化[J]. 材料导报, 2024, 38(19): 23060136-7.
GUO Zhiyong, LI Meng, ZHANG Zhiqiang, LU Xuecheng, ZHANG Tiangang, CAO Yiran. Optimization of Arc Additive Process for Nickel-based Superalloy GH4169 Based on Response Surface Methodology. Materials Reports, 2024, 38(19): 23060136-7.
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