摘要
从晶间腐蚀机理、S30432奥氏体耐热钢特点、晶间腐蚀试验方法等方面,阐明S30432钢管进行原材料晶间腐蚀试验时不应该进行敏化处理;从锅炉制造、运输、现场存放和运行方面提出了预防S30432钢管晶间腐蚀的措施。
The reasons for infeasibility of sensitizing treatment for S30432 heat-resistant boiler tubes during intergranular corrosion test have been stated through such aspects as intergranular corrosion mechanism, features of S30432 austenitic heat-resistant tubes and intergranular corrosion test methods, etc. In addition, measures for preventing intergranular corrosion of S30432 heat-resistant tubes are proposed in the process of fabrication, transportation, site storage and operation of the boiler.
引文
[1] GAO Y, ZHANG C L, XIAOG X H, et al. Intergranular corrosion susceptibility of a novel Super304H stainless steel[J]. Engineering Failure Analysis, 2012, 24: 26-32.
[2] 张春雷. 某电厂Super304H钢管晶间腐蚀开裂原因分析[J]. 热力发电, 2012, 41(5): 65-68.
[3] 梁成浩. 现代腐蚀科学与防护技术[M]. 上海: 华东理工大学出版社, 2007: 122-124.
[4] 徐坚. 腐蚀金属学及耐腐蚀金属材料[M]. 杭州: 浙江科学技术出版社, 1981: 38-47.
[5] 郭富强, 程世长, 刘正东, 等. 碳、铌对ASME S30432奥氏体耐热钢晶间腐蚀性能的影响[J]. 机械工程材料, 2007, 31(8): 11-14.
[6] 刘正东, 程世长, 干勇, 等. 中国600 ℃蒸汽参数火电机组用锅炉钢管国产化研制进展[J]. 钢铁, 2010, 45(10): 1-8.
[7] 张春雷, 熊夏华, 郑志军, 等. 稳定化处理对Super304H奥氏体耐热钢晶间腐蚀敏感性的影响[J]. 材料研究学报, 2013, 27(4): 411-418.