苏联压力容器堆焊主要采用带极堆焊。为了改善质量和提高效率,曾对带外磁场的宽带极堆焊进行过试验,但认为设备结构复杂,质量不稳定,目前还不能推广应用,故在使用一般宽度(50～65mm)单带极堆焊的同时,着重 The Soviet Union pressure vessel surfacing welding with a very hard surfacing. In order to improve the quality and improve the efficiency, we have carried out experiments on the broadband overlay welding with out-of-band magnetic field. However, it is considered that the structure of the equipment is complicated and the quality is not stable so far. Therefore, Surfacing at the same time, focus