Cause analysis and solution of crack of hydraulic support column cylinder

doi:10.13251/j.issn.0254-6051.2024.08.048

Abstract

Abstract: Cracks in cylinder of a large hydraulic support column during service were analyzed by means of mechanical property detection, microstructure analysis and crack morphology characterization. The results show that the cracking of the cylinder of hydraulic support column is not directly related to the microstructure and properties of the matrix material, but is caused by the cladding defects. The cracks occur at the interface of the stainless steel clad layer and the matrix, and then expand to the matrix side and the clad layer side under the action of long-term load, finally, resulting in cracking failure. By improving laser cladding parameters, laser cladding defects can be effectively avoided.

Key words: hydraulic support, column cylinder, failure analysis, laser cladding

CLC Number:

TG142.1

Cui Leilei, Ma Ke, Lan Zhiyu, Wang Piaoyang, Deng Xiangtao. Cause analysis and solution of crack of hydraulic support column cylinder[J]. Heat Treatment of Metals, 2024, 49(8): 289-294.

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