Open AccessAnalysis of the Explosion of Dissimilar Steel Joints in the 1050MW USC Boiler
Author(s) -
Qingxu Yang,
Xiaoming Shi,
Christine Yang,
Xiawei Yang,
Hao Peng,
Xubi Liu,
Yu Wan,
Xiaokang Zhang
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1626/1/012147
Subject(s) - welding , boiler (water heating) , superheater , structural engineering , power station , joint (building) , materials science , metallurgy , engineering , waste management , electrical engineering
The leakage of dissimilar steel welded joint near the third superheater occurred in a power plant boiler. Through the analysis of tube cutting sampling, it is considered that the welding quality of dissimilar steel joint is good, the dissimilar steel joint cannot bear the bending load, and the improper arrangement of weld joint position together cause the leakage. It is suggested that the welding joints of dissimilar steel should not be arranged in the position with complex structural stress in the design, and the inspection of anti-abrasion and anti-explosion blind area should be strengthened in the process of maintenance.