5556铝合金CMT增材单道成形质量及尺寸预测模型研究  

Quality and Dimension Prediction Model for Single Channel Forming of 5556 Aluminum Alloy by CMT Additive

作　　者：李博 刘岩[2] 周桂申 杨栈琳 张文广 LI Bo;LIU Yan;ZHOU Gui-shen;YANG Zhan-lin;ZHANG Wen-guang(School of Mechanical Engineering,Shenyang University,Shenyang 110044,China;Liaoning Provincial Key Laboratory of Advanced Materials&Preparation Technology,Shenyang University,Shenyang 110044,China)

机构地区：[1]沈阳大学机械工程学院,沈阳110044 [2]沈阳大学辽宁省先进材料制备技术重点实验室,沈阳110044

出　　处：《精密成形工程》2023年第12期79-85,共7页Journal of Netshape Forming Engineering

基　　金：辽宁省自然科学基金(2023-MS-320);辽宁省重点研发计划(2020JH2/10100011)。

摘　　要：目的研究不同参数下5556铝合金CMT增材单道成形质量及尺寸预测模型。方法利用游标卡尺和钢直尺,对增材试样截面的余高、熔宽、成形高度及成形宽度进行测量,并且使用SPSS、Excel及Origin等软件进行尺寸预测模型的建立及验证。结果对于单层单道增材试样,随着焊接电流从60A增至140A,其余高、熔宽均整体呈上升趋势,并且余高的增长速度远小于熔宽的增长速度;随着焊接速度从300 mm/min增至1100 mm/min,其熔宽、余高均呈下降趋势,但当焊接速度超过700 mm/min时,熔宽的变化较小;随着气体流量从10 L/min增至25 L/min,余高的变化幅度较小,但熔宽的变化幅度较大。对于多层单道增材试样,随着焊接速度从400mm/min变为800 mm/min,其成形高度和宽度均变小;随着焊接电流从90A变为130 A以及层间停留时间从1 min变为5 min,其成形高度和宽度均变大。通过多层单道增材实验和尺寸预测模型可知,焊接电流与增材试样的宽度呈正相关,焊接速度与增材试样的高度和宽度皆呈负相关。结论单层单道增材试样的熔宽主要受焊接电流的影响,而余高主要受焊接速度的影响。在焊接电流为100A、焊接速度为500mm/min、气体流量为22.5 L/min条件下,单层单道增材试样的成形质量最优。对比相同工艺参数下多层单道增材试样与尺寸预测模型的成形宽度和成形高度可知,二者误差皆在10%以内。The work aims to study the CMT additive single channel forming quality and dimension prediction model for 5556 aluminum alloy under different parameters.The residual height,weld width,forming height,and forming width of the CMT additive sample section were measured by the vernier caliper and steel ruler.SPSS,Excel and Origin were used to estab-lish and verify the dimension prediction model.With the welding current increasing from 60 A to 140 A,the overall trend of re-sidual height and weld width of the monolayer single channel additive sample increased.The increase speed of the residual height was much smaller than that of the weld width.With the welding speed increasing from 300 mm/min to 1100 mm/min,the weld width and residual height showed a declining trend.However,when the welding speed exceeded 700 mm/min,the change in weld width was relatively small.With the gas flow increasing from 10 L/min to 25 L/min,the change in residual height was relatively small,but the change in weld width was relatively large.With the welding speed increasing from 400 mm/min to 800 mm/min,the forming height and width of the multilayer single channel additive sample decreased.As the welding current changed from 90 A to 130 A and the interlayer residence time changed from 1 min to 5 min,the forming height and width increased.Based on the multilayer single channel additive experiment and the dimension prediction model,the weld-ing current was positively correlated with the width of the additive sample.The welding speed was negatively correlated with the width and height of the additive sample.The weld width of the monolayer single channel additive sample is mainly affected by the welding current.The residual height is mainly affected by the welding speed.Under the experimental conditions,the pa-rameters for the optimal forming quality of the monolayer single channel additive sample are welding current 100 A,welding speed 500 mm/min and gas flow 22.5 L/min.By comparing the forming width and forming height of multilayer single channel

关 键 词：冷金属过渡焊 5556铝合金 尺寸预测模型 成形质量 增材制造 

分 类 号：TG444[金属学及工艺—焊接] TG146.21[一般工业技术—材料科学与工程]