Aluminum die castings for carrier telephone systems

DIE casting has been aptly termed the shortest distance between raw material and finished part. It is defined as the process of producing accurately dimensioned, sharply defined, smooth-surfaced parts by forcing molten metal under pressure into metal dies or molds. The term is also used for the resulting casting. Aluminum parts produced by the die-casting process are used extensively in all kinds of applications throughout the Bell System plant. Attempting to cover its many uses would be too great an undertaking here. However, its use in low-cost carrier telephone equipment is a story in itself and is the subject of this paper.