不锈钢杀菌锅封头裂纹分析

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摘要：在不锈钢杀菌锅定期检验中，宏观检查发现蝶形封头内表面存在变形、裂纹缺陷，采用渗透检测、化学成分分析、硬度分析及氯离子含量分析等检验、检测方法分析验证，判定该裂纹缺陷为应力腐蚀开裂。文中深入分析裂纹产生的原因，提出整改和预防措施。

关键词：奥氏体不锈钢;杀菌锅;应力腐蚀开裂;防护措施

Analysis on Cracks in the Sealed Head of Stainless Steel Sterilization Pots

HUANG Meng

（Zhangzhou Branch of Fujian Special Equipment Supervision and Inspection Institute，Zhangzhou 363000，Fujian，China）

Abstract：  In the regular inspection of stainless steel sterilization pot， the macro inspection found that there are deformation and crack defects on the inner surface of the dished head. Penetration testing， chemical composition analysis， hardness analysis， and chloride ion content analysis are used to analyze and verify the inspection and testing methods to determine that the crack defect is stress corrosion cracking. This paper deeply analyzes the causes of cracks， and finally puts forward rectification and preventive measures.

Key Words： Austenite stainless steel; Sterilization pot; Stress corrosion cracking; Protection measure.

1 前言

随着预包装和罐头食品行业生产工艺的改进，以及相关法规、规范、标准对压力容器检验、使用管理的进一步严格要求，奥氏体不锈钢制杀菌锅的使用普及率越来越高。（剩余3121字）