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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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奥氏体钢富铬层保留清洗的可行性研究
, PP. 114-117
Keywords: 化学保留清洗,富铬层,过热器,再热器,换热管内壁,奥氏体钢
Abstract:
基于富铬层对过热器、再热器奥氏体钢氧化皮生长过程的影响分析,提出了富铬层化学保留清洗的方法。针对奥氏体钢材质的多样性、氧化皮状态的复杂性以及工程可实施性,研制了一种由多种有机酸复配且适合多种奥氏体钢富铬层保留清洗的介质,在溶垢试验中采用失重法测得该清洗介质对氧化铁层的溶解量为富铬层的10倍,对tp347h、super304及hr3c3种管材进行24h清洗后发现:tp347h和super304材质表面易剥离的氧化铁层可完全去除,hr3c表面的氧化铁层较为致密,化学清洗后有少量残留,3种材质的富铬层得到了完整保留,且没有引起奥氏体钢的晶间腐蚀。
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