2195-2219异种铝合金焊接接头的微观组织和性能
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聂敬敬, 龚政轩, 孙京丽, 杨斯达, 夏先朝, 徐爱杰
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Microstructure and Properties of Butt Welding Joints of 2195-2219 Al-alloy Plates
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NIE Jingjing, GONG Zhengxuan, SUN Jingli, YANG Sida, XIA Xianchao, XU Aijie
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表2 焊接方式和工艺参数
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Table 2 Welding method and process parameters
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| Sample No. | Welding method | Process parameters |
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| 1# | TIG welding with two layers on the front and one layer back sealing | Welding current 180~220 A, arc length 4 mm, welding speed 200 mm·min-1 | | 2# | VPPA welding on the front with back sealing by TIG welding | Positive current 207 A, negative current 243 A, welding speed 200 mm·min-1, argon flow 25 L·min-1, back sealing weld current 180 A | | 3# | VPPA welding without argon protection and sealing on the back | Positive current 207 A, negative current 243 A, welding speed 200 mm·min-1 |
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