321，347不锈钢焊接接头的焊后热处理

摘要

为了最大限度地防止含稳定化元素的347，321奥氏体不锈钢的焊接接头发生敏化，从而产生晶间腐蚀或者对敏化不锈钢敏感的应力腐蚀，石油化工工程中通常采取的措施是进行稳定化热处理。分析了奥氏体不锈钢稳定化热处理存在的问题，并根据经验给出了稳定化热处理的准备、执行及热处理后的检查方法。%The stabilization heat treatment is a universal method used in the field of petrochemical engi-neering in order to maximally prevent the intergranular corrosion and the stress corrosion cracking caused by the sensitization phenomenon that occurs when types 321 and 347 stainless steel,two types of austenitic stainless steel containing stabilizing elements,are being welded.The problems existing in the process of stabilization heat treatment was analyzed and the solutions were put forward including the methods of preparation,implementation and inspection in the procedure of stabilization heat treatment according to the author′s experience for many years.