Brazing of carbon, alloy, and stainless steel parts can be performed in batch vacuum furnaces and in continuous hydrogen atmosphere belt furnaces, depending in part size, materials, and geometry.  Larger volumes and smaller size parts are generally brazed on high volume continuous furnaces, with application of either paste braze compound or alloy pre-form.  Furnace brazing is usually conducted on stamped parts, sometimes in conjunction with screw machine and powder metal components.