摘要
基于TIG电弧增材铝合金多层单道薄壁件成形过程,采用二次回归通用旋转组合设计建立了焊道宽度、层高与主要工艺参数(焊接线能量、送丝速度、层间温度)的预测模型。研究结果表明:焊道层高与层宽预测值与实验测量值相差较小,焊道宽度的最大误差为3.25%,层高的最大误差为4.76%,均在合理范围内,预测精度较高。在成形过程中,影响焊道宽度的主要因素有焊接线能量和层间温度,且影响程度存在交叉;影响层高的主要因素为送丝速度。
Based on multi-layer single-bead forming process of TIG wire arc additive manufacturing (WAAM) of aluminum alloy thin-walled part , the quadratic regression universal rotating combination design was used to establish the prediction model between layer width and layer height of weld bead and the main process parameters (welding line energy, wire feeding speed, interlayer temperature).The research result shows that the predicted values of layer width and layer height of the weld bead are similar with experimental measured values.The maximum error of the bead width is 3.25%, the maximum error of the layer height is 4.76%, the maximum errors of the layer width and layer height of the weld bead are within the reasonable range, and the prediction accuracy is high.In the forming process, the main factors affecting the width of the weld bead are the welding line energy and the interlayer temperature, and the influence degree is crossed.The main factor affecting the layer height is the wire feeding speed.
作者
杨笑宇
李言
杨明顺
赵鹏康
YANG Xiaoyu;LI Yan;YANG Mingshun;ZHAO Peng-kang(School of Mechanical and Precision Instrument Engineering,Xi'an University of Technology,Xi'an 710048,China)
出处
《热加工工艺》
北大核心
2019年第17期134-137,141,共5页
Hot Working Technology
基金
国家自然科学基金项目(51475366)
陕西省教育厅自然科学专项(102-206061738)
关键词
电弧增材制造
工艺参数
预测方程
层高层宽预测
wire and arc additive manufacturing
process parameters
prediction equation
prediction of layer height and layer width
