Alternative current flux zoned tungsten inert gas welding process for aluminium alloys

作者：Huang, Y.^*; Fan, D.; Shao, F.

来源：Science and Technology of Welding and Joining, 2012, 17(2): 122-127.

DOI：10.1179/1362171811Y.0000000087

• Aluminium alloy
• FZ-TIG welding
• Weld penetration
• Weld surface appearance
• Process factor
• Arc constriction

A new variant of activating flux tungsten inert gas (TIG) welding process called flux zoned TIG (FZ-TIG) welding is proposed to weld aluminium alloys based on the mechanism of activating flux constricting welding arc. This process can not only increase weld penetration but also obtain perfect weld surface appearance simultaneously. An alternative current FZ-TIG welding is made using SiO2 as the side region material and flux FZ108 developed by the authors with uniform design method as the central region coat material. The weld penetration can reach above three times that of the conventional alternative current TIG welding. All the weld shape, weld microstructure and weld mechanical properties are fine. Except for argon shielding gas flowrate, other welding parameters, including welding current, welding speed, central coat width, central coat content and solvent, have great effect on the weld penetration of alternative current FZ-TIG welding for aluminium alloys.

• 出版日期2012-2
• 单位兰州理工大学