Keynote Address Arc Welding Consumables - Covered and Cored Electrodes A Century of Evolution

摘要

Over the first half of the 20~(th) century, the manufacturing industry was revolutionized by the introduction of welding. Prior to arc welding, the methods of casting, forging, riveting, and bolting were the principal methods utilized in the fabrication of metallic structures. Practical limitations of these methods, nevertheless, prevented them from taking advantage of the economics of the large units, reduced weight and simplified production offered by welding. Shielded metal arc (SMA) was one of the first industrial welding processes to be developed during the early 1910's.