基于二次通用旋转组合设计的冷金属过渡电弧增材制造AZ31镁合金焊道截面尺寸研究  

Research on Cross-sectional Dimensions of Cold Metal Transfer Arc Additive Manufacturing AZ31 Magnesium Alloy Weld Beads Based on Quadratic General Rotary Unitized Design

作　　者：王一丰 张忠明[1,2,3] 马威龙 祁嘉伟 徐春杰 杨长林[3] WANG Yifeng;ZHANG Zhongming;MA Weilong;QI Jiawei;XU Chunjie;YANG Changlin(School of Ma terials Science and Engineering,Xi'an University of Technology,Xi'an 710048,China;Xi'an Key Laboratory of Advanced Magnesium Alloy Additive Manufacturing and Precision Forming,Xi'an 710048,China;State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]西安理工大学材料科学与工程学院,陕西西安710048 [2]西安市先进镁合金增材制造与精确成形重点实验室,陕西西安710048 [3]西北工业大学凝固技术国家重点实验室,陕西西安710072

出　　处：《热加工工艺》2024年第5期18-23,共6页Hot Working Technology

基　　金：国家自然科学基金面上项目(52071268);陕西省自然科学基础研究计划项目(2023-JC-YB-412,2023-JC-QN-0573);西安市高校重大科技创新平台及科技成果就地转化项目(20GXSF0003);高端外国专家引进计划项目(G2021041003L);陕西省高等学校学科创新引智基地项目(S2021-ZC-GXYZ-0011)。

摘　　要：基于冷金属过渡的电弧增材制造技术制备了AZ31镁合金单道试样,测试了单道试样的焊道宽度和焊道高度。根据二次通用旋转组合试验设计与二次多项式逐步回归分析,建立了高度显著的焊道宽度和焊道高度与摆动宽度、焊接速度、送丝速度和基板温度等工艺参数间的关系式。结果表明,工艺参数对焊道宽度的影响主次顺序依次为摆动宽度、送丝速度、基板温度、焊接速度,对焊道高度的影响主次顺序依次为焊接速度、摆动宽度、基板温度、送丝速度。随摆动宽度的增大,焊道宽度逐渐增大,焊道高度逐渐减小;随焊接速度的提高,焊道宽度和焊道高度均逐渐减小;随送丝速度的提高,焊道宽度和焊道高度也随之同步增大;随基板温度升高,焊道宽度增大,焊道高度降低。Based on the cold metal transfer arc additive manufacturing technology,AZ31 magnesium alloy single-pass samples were prepared,and the weld bead width and height of the samples were tested.According to the quadratic general rotary unitized design and the second polynomial stepwise regression analysis,the highly significant relationships between the weld bead size,i.e.width and height,and the oscillating width,welding speed,wire feed speed and substrate temperature were established.The results show that the influence of process parameters on the weld bead width is mainly in the order of oscillating width,wire feed speed,substrate temperature,and welding speed;and the degree of influence of process parameters on the weld bead height is in the order of welding speed,oscillating width,substrate temperature,and wire feed speed.As the oscillating width increases,the weld bead width gradually increases,and theweld bead height gradually decreases;as thewelding speed increases,both the weld bead width and h eight gradually decrease;as the wire feed speed increases,the weld bead width and height also increase simultaneously;as the substrate temperature increases,the weld bead width increases and the weld bead height decreases.

关 键 词：AZ31镁合金 冷金属转移 电弧增材制造 焊道尺寸 二次通用旋转组合设计 

分 类 号：TG669[金属学及工艺—金属切削加工及机床]