Resistance Welding of Motor Frames

Cost reduction calls for a continual revision of methods. The making of motor frames using rolled plate in place of castings formerly used, the object being to reduce cost is one such revision. The method of manufacture is briefly outlined including the rolling, welding, sizing, and other operations. The electric resistance welding method is emphasized and results of electrical tests on equipment are outlined. The oscillograph records give the character of a resistance flash weld in some detail. The conclusion is reached that not only is there a saving in cost of frames, but also a reduction in machining costs. The result is a better product at less cost.