T. Neumann, Visteon Corporation, Sterling Heights, MI

Summary: This paper will examine the response of rapid tempering on the mechanical behavior of induction hardened automotive axle shafts made from 1050M steel. Rapid tempering was accomplished using an in-line tempering oven with an ultra high rate of air convection movement. The tempering cycle was decreased by 80% with no discernable degradation of mechanical or fatigue properties. The post temper response on Torsional strength, fatigue properties and temperature/time uniformity in the oven will be contrasted.