High scrap costs due to out of specification parts.
Increase in tact time in process, decrease in labor efficiency due to scrap rate and excessive hardness measurements.
Potential risk of failure on engine in low mileages.
100% hardness measurements in ongoing process which leads to time and cost waste.
This technical paper summarizes the case study conducted for truck flywheel starter ring gears with diameter of 470 mm in order to reduce hardness variation by optimization of induction hardening and tempering processes.