(哈爾濱工業(yè)大學(xué) 現(xiàn)代焊接生產(chǎn)技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室，
哈爾濱 150001)
摘 要: 建立了高強(qiáng)鋁合金雙絲MIG焊熔滴過(guò)渡高速攝像系統(tǒng)以及焊接參數(shù)采集系統(tǒng)，獲取了不同工藝規(guī)范下的脈沖熔滴過(guò)渡形式。 實(shí)驗(yàn)表明一脈一滴工藝規(guī)范焊縫成形好， 工藝過(guò)程穩(wěn)定， 應(yīng)為首選過(guò)渡形式。 確定了在一脈一滴情況下的焊接工藝規(guī)范參數(shù)區(qū)間，在此區(qū)間內(nèi)可以實(shí)現(xiàn)穩(wěn)定的一脈一滴熔滴過(guò)渡， 為控制焊接熱輸入量及焊縫成形奠定了基礎(chǔ)。
關(guān)鍵字: 鋁合金; 雙絲MIG焊; 熔滴過(guò)渡; 焊接規(guī)范
（State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China）
Abstract:The high-speed camera system and data acquisition system of welding parameters were created for tandem MIG welding of high strength aluminum alloy. The experiments were carried out in order to obtain the droplet transfer photos under different welding parameters in pulsed mode. The droplet transfer mode of “one pulse one droplet” becomes the preferred selection during welding process because of its stable procedure and sound weld formation. The parameter ranges for the corresponding transfer mode were achieved, among which the stable droplet transfer mode of “one pulse one droplet” can be realized. These efforts brave the way for control of weld heat input and weld formation in the future.
Key words: aluminum alloy; tandem MIG welding; droplet transfer; welding procedure
