Automatic system for abrasive hardfacing

Arc welding systems, apparatus and methods are for hardfacing are provided, including particle feeding apparatus. In one aspect the workpiece is moved in an oscillatory fashion while keeping the welding torch and the particulate delivery system stationary during at least a portion of welding pass. The welding torch and particulate delivery system may also be moved in a non-oscillatory fashion. Process speeds of about 18-30 in/min can be obtained with carbide incorporation of greater than 30% and uniform distribution. 本发明公开了种用于堆焊的电弧焊接系统、设备和方法，包括颗粒供给设备。在个方面，在焊接过程的至少部分期间，工件以振荡方式移动，同时保持焊枪和颗粒输送系统静止。焊枪和颗粒输送系统也可以以非振荡方式移动。约18-30英寸/分钟的处理速度可以通过大于30％的碳化物掺入和均匀分布来获得。