摘要
试验利用铝合金直流正接A -TIG焊分别以CaF2 、TiO2 、SiO2 和自行研制的AF30 5铝合金A -TIG焊活性剂作为试验用表面活性剂 ,研究了表面活性剂对焊接熔深的影响 ,初步分析了表面活性剂增加铝合金A -TIG焊熔深的机理。发现焊接熔深变化随活性剂的不同而不同 ,并且与焊接电压变化一致。认为热输入变化是影响熔深变化的重要因素 ,尤其对于SiO2 ,焊接熔深与熔宽同步变化 。
Activating tungsten inert-gas ( A-TIG ) welding with direct current straight polarity ( DCSP ) mode of aluminum alloy was used to study effect of surface activating flux on welding penetration and to fundamentally study the mechanism of increasing welding penetration. CaF_2,TiO_2, SiO_2 and AF305 flux for aluminum alloy studied by ourselves served as experimental fluxes. It was found that welding penetration varied with fluxes and was consistent with welding voltage. It is believed that heat input is one of important factors influencing welding penetration. Especially for SiO_2 , the increase of heat input is the crucial factor because welding penetration varies synchronously with weld width.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2004年第5期60-62,共3页
Transactions of The China Welding Institution
基金
教育部骨干教师资助项目
关键词
表面活性剂
直流正接A-TIG焊
铝合金
熔深
热输入
surface activating flux
activating tungsten inert-gas welding with direct current straight polarity mode
aluminum alloy
welding penetration
heat input
