Stress relieving enables castings to maintain dimensional stability through their useful life. SIGMA OEM can offer stress relieving on gray iron castings if customers require it.
This process combats the effects of stress in castings caused by different cooling rates throughout various parts of the casting. This issue results from complex geometry with varying thicknesses and curvatures. Stress relieving is especially important if machining operations are required post-casting, with sub-thousands (of an inch) tolerances in relational dimensions between features….