浙江电力Issue(10)：47-50,4.
锅炉炉膛清洗对新型奥氏体钢焊接接头腐蚀影响研究
Study on Influence of Furnace Cleaning on the Corrosion of New-type Austenitic Stainless Steel Welded Joints for Ultra Supercritical Boiler
尹刚 1杨中明 1徐龙 1朱平2
作者信息
- 1. 神华浙江国华浙能发电有限公司，浙江 宁海 315612
- 2. 苏州热工研究院有限公司，江苏 苏州 215004
- 折叠
摘要
Abstract
The new-type austenitic stainless steel Super304H and HR3C have been used in the high-tempera-ture section of the heating surface for domestic ultra supercritical boilers. The outer surface of the heating sur-face is usually cleaned by fire water during shutdown of the units. In order to test whether the Cl-of fire water can cause stress corrosion of the new-type steel welded joints. Through batches of etch test under simulating similar conditions, the sample has been analyzed by using macroscopic examination, surface penetration, metallographic detection, electron microscope scanning and etc. It is not found that higher concentration Cl-solution can cause the corrosion of Super304H or HR3C welded joints. It provides a strong test basis that the furnace internal cleaning by fire water is feasible for ultra supercritical boilers.关键词
新型奥氏体不锈钢/焊接接头/浸蚀试验/应力腐蚀/表面局部腐蚀Key words
new-type austenitic stainless steel/welded joints/etch tests/stress corrosion/local surface corrosion分类
能源科技引用本文复制引用
尹刚,杨中明,徐龙,朱平..锅炉炉膛清洗对新型奥氏体钢焊接接头腐蚀影响研究[J].浙江电力,2013,(10):47-50,4.
