一、原理爆炸加压旋弧焊是利用旋转电弧加热、爆炸的压力顶锻而完成的一种焊接方法。在图1中,1、5为待焊接的一对管子,在直流焊机接通后,用一定的方法(本机用高频)在两段管子对口间隙中引起电弧3,同时电流即通过套在管子上互相串联而绕向相反的两个线圈2和4,在管端产生径向磁场 B。据左手定则,处在径向磁场中的电弧3将 First, the principle of explosion Spiral arc welding is the use of rotating arc heating, explosion of the top pressure to complete a welding method. In Figure 1, 1,5 for a pair of tubes to be welded, after the DC welding machine connected, with a certain method (the local high-frequency) in the two pipe counterparts in the gap caused by arc 3, while the current through The two coils 2 and 4, which are sleeved on the tube and connected in series to each other in opposite directions, generate a radial magnetic field B at the tube end. According to the left-hand rule, the arc 3 in the radial field will be