Stress relief heat treatment manner null of low carbon stainless steel

摘要

PURPOSE:To reduce thermal stress developed with solution treatment by executing the solution treatment to a low carbon stainless cast steel cast or welded and then slowly cooling this at the specific rate after heating and holding at the specific temp. CONSTITUTION:The solution treatment is executed to the low carbon stainless cast steel product cast or welded. Then, after heating and holding this at 900-1000 deg.C, this is slowly cooled at =80 deg.C/hr cooling velocity. In the case of the Mo-containing low carbon stainless steel, after executing the solution treatment and then heating and holding at 400-480 deg.C, this is slowly cooled. By this method, the lowering of corrosion resistance and toughness is prevented.