不同孔径节流阀对铝合金MIG焊气体流向及保护效果的影响规律  

Influence of Throttle Valve with Different Aperture on Gas Flow Direction and Protection Effect of Aluminum Alloy MIG Welding

作　　者：王新[1] 陈超[1] 谷孝满 李佳兴 王晓宇 Wang Xin;Chen Chao;Gu Xiaoman;Li Jiaxing;Wang Xiaoyu(Panasonic Welding Systems(Tangshan)Co.,Ltd.,Tangshan Hebei 063000,China)

机构地区：[1]唐山松下产业机器有限公司,河北唐山063000

出　　处：《山西冶金》2024年第2期14-17,共4页Shanxi Metallurgy

摘　　要：针对10 mm厚硬铝6061焊接过程中的气孔问题进行了分析,认为送丝机上的节流阀对铝合金气孔的产生具有较大影响,因此针对不同孔径的节流阀和气体流量,采用气体成像仪对焊枪出口处的气流形态、气流流速以及对电弧的压缩性进行了对比分析,同时又进行了实际焊接验证。为进一步研究不同孔径的节流阀对铝合金焊接气孔及电弧稳定性的影响规律提供了依据,也为送丝机节流阀孔径的选择提供了参考依据。An analysis was conducted on the porosity problem of 10 mm thick hard aluminum 6061 welding,and it was found that the throttle valve on the wire feeder has a significant impact on the generation of porosity in aluminum alloy.Therefore,for throttle valves with different apertures and gas flow rates,a gas imaging instrument was used to compare and analyze the airflow morphology,flow rate,and compressibility of the arc at the outlet of the welding gun,and actual welding verification was also carried out.This provides a basis for further studying the influence of throttle valves with different apertures on the welding porosity and arc stability of aluminum alloys,as well as a reference for the selection of throttle valve apertures for wire feeders.

关 键 词：铝合金 6061 气孔 节流阀 MIG 

分 类 号：TG443[金属学及工艺—焊接]