Failure Analysis and Welding Repair for Water Wall Connection Tube Burst of SA210C Steel

Xiang Feng Zheng; Nan Wu; Yun Jian Jiang; Wen Bin Li; Xiao Jun Hao; Hao Ke; Wen Peng Li; Xiao Hao Dai

doi:10.4028/www.scientific.net/AMR.998-999.422

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Failure Analysis and Welding Repair for Water Wall Connection Tube Burst of SA210C Steel
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 998-999Failure Analysis and Welding Repair for Water Wall...

Failure Analysis and Welding Repair for Water Wall Connection Tube Burst of SA210C Steel

Abstract:

Through methods, such as microscope analysis, mechanical analysis, chemical analysis, metallography examination etc, the causes resulting in water wall tube bursting of 300MW station boiler have been analyzed. The raw material defects is the primarily inducement of bursting failure. In welding tube, the measures of reducing residual stress, such as lower welding heat input, reducing thickness of welding layer and so on, were taken. The welding repair succeeded greatly.