2低频电阻焊管关键技术2.9电极辊的材料最初认为电极辊应采用稳定磨损的消耗性材料(如纯铜)才能保证良好的接触,但B&W公司实践证实应采用硬的电极辊,且电极辊要参与一定挤压变形,这样才能避免电极辊的表面局部屈服变形和烧损,维持稳定的接触条件。尽管硬的电极辊材料的导电性仅是纯铜的60%左右,但B&W公司采用 2 Low-frequency resistance welded pipe technology 2.9 electrode roller material Initially consider the electrode roller should wear stable consumable materials (such as pure copper) in order to ensure good contact, but the practice of B & W confirmed that the hard electrode roller should be used, and the electrode roller to Participate in a certain extrusion deformation, so as to avoid partial surface electrode roll deformation and burning, to maintain stable contact conditions. Although hard electrode roller materials have conductivity of only about 60% of pure copper, B & W uses