【摘要】：雙熱絲MAG焊接技術(shù)(Double Hot Wires MAG Welding Technology)是一種高效焊接方法。在焊接過程中有一根主焊絲和兩根熱絲。主焊絲和母材之間產(chǎn)生主弧,熱絲加熱電源的兩個(gè)輸出端子分別與兩根焊絲連接,經(jīng)焊接熔池構(gòu)成閉合回路。該工藝采用電阻熱預(yù)熱焊絲,利用熔池的能量最終熔化焊絲,在增大熔敷效率的同時(shí),有效降低焊接熱輸入。研究熱絲電流I_(res)對(duì)焊絲熔敷速率的影響規(guī)律,并進(jìn)行厚板的多層擺動(dòng)焊接。結(jié)果表明,隨著I_(res)的增大,焊絲熔化速度增大,并且每一個(gè)熱絲電流對(duì)應(yīng)一個(gè)最佳熱絲送絲速度范圍,最大熔敷速度可達(dá)25 kg/h以上,有效提高了焊接效率。
[Abstract]:Double hot wire MAG welding technology (Double Hot Wires MAG Welding Technology) is an efficient welding method. There is one main wire and two hot wires during the welding process. The main arc is produced between the main welding wire and the base metal. The two output terminals of the hot wire heating power supply are respectively connected with the two welding wires, and the closed loop is formed by the welding pool. In this process, the welding wire is preheated by resistance, and the welding wire is melted by the energy of the weld pool. The welding heat input is reduced effectively while the deposition efficiency is increased. The influence of hot wire current I _ (res) on the deposition rate of welding wire was studied and the multi-layer swinging welding of thick plate was carried out. The results show that with the increase of I _ (res), the wire melting rate increases, and each hot wire current corresponds to an optimum wire feeding speed range, and the maximum deposition speed can reach more than 25 kg/h, which effectively improves the welding efficiency.
【作者單位】： 北京工業(yè)大學(xué)機(jī)械工程與應(yīng)用電子技術(shù)學(xué)院;
【分類號(hào)】：TG444.7

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