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Ma Zhibao, Li Fengqiang, Chen Xin, Gao Dawei, Liu Yanru, Guo Derui. Hot repair welding technology of ZG15Cr1Mo1V casting[J]. WELDING & JOINING, 2021, (7): 53-56. DOI: 10.12073/j.hj.20210601001
Citation: Ma Zhibao, Li Fengqiang, Chen Xin, Gao Dawei, Liu Yanru, Guo Derui. Hot repair welding technology of ZG15Cr1Mo1V casting[J]. WELDING & JOINING, 2021, (7): 53-56. DOI: 10.12073/j.hj.20210601001
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Hot repair welding technology of ZG15Cr1Mo1V casting

  • 1. Datang North China Electric Power Experimental Research Institute, Beijing 100040;

  • 2. Datang International Power Generation Co., Ltd., Beijing Gaojing Thermal Power Plant, Beijing 100040, China

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  • Received Date: May 31, 2021
    Graphical Abstract
    • Abstract
  • The cracking position of ZG15 Cr1 Mo1 V casting was determined as angle R position of the combined valve body. The composition,microstructure and mechanical properties of the parent material around the defect were tested,and the casting was qualified for repair welding.The weldability and key points of repair welding of ZG15 Cr1 Mo1 V steel were analyzed. The repair welding of ZG15 Cr1 Mo1 V casting of medium pressure reheat combined control valve of a power plant was successfully carried out with the same material hot repair welding and the integral heat treatment. It has been running safely and stably for 4 years.
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    • References (12)
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