R. C. Goldstein, V. S. Nemkov, R. J. Madeira, Fluxtrol Incorporated, Auburn Hills, MI
Vehicle axles are parts that have been induction heat treated for many years. Demands for increased vehicle reliability, fuel economy and performance have led to more challenging heat treatment specifications for axles. While being asked to produce better product, automotive parts suppliers have been faced with increased competition and relentless demands to lower costs. There are two main processes for induction heat treating axles – scanning and single shot. An intensive study using computer simulation revealed that there was significant potential for cost savings in induction scanning processes by using optimally designed, precision machined inductors with magnetic flux controllers. The cost savings come in the form of improved part quality, reduced sensitivity to postitioning, increased production rates and energy savings. These results have been validated in several production facilities on both semi-float and full-float axles. A case story will be presented to demonstrate typical results.
Summary: Demands for increased vehicle reliability, fuel economy and performance have led to more challenging heat treatment specifications for axles. An intensive study using computer simulation revealed that there was significant potential for cost savings in induction scanning processes by using optimally designed, precision machined inductors with magnetic flux controllers. The cost savings come in the form of improved part quality, reduced sensitivity to postitioning, increased production rates and energy savings.
