Heavy vehicle rear axle mountings - cold forged and water quenched

摘要

Heavy vehicle driving axle housings are normally hot forged in two pieces which are then welded together and finally oil hardened and tempered. By using a cold forging technique, the completed housing, welded up from two parts in the same way, can then be heated by high frequency induction heating and water quenched, to give a harder material with less cost and smaller metal losses in processing. A low-carbon, low-alloy steel can have a final yield point between 50 and 80 kp/mm2, and a tensile strength between 80 and 108 kp/mm2.