The invention discloses a method for manufacturing a ship propeller. The method comprises the following steps of molding a blade part casting and a shaft hub part casting through stainless steel alloy casting, respectively; washing the surfaces of the blade part casting and the shaft hub part casting to remove greases and impurities on the surfaces; performing ultrasonic cleaning on the surfaces of the blade part casting and the shaft hub part casting; drying the surfaces of the blade part casting and the shaft hub part casting for the future use; performing electrolytic grinding on the cleaned blade part casting and the cleaned shaft hub part casting; performing passivation on the ground blade part casting and the ground shaft hub part casting for three times; precisely cleaning, drying and coloring the blade part casting and the shaft hub part casting after the blade part casting and the shaft hub part casting are dried; performing thermal spraying treatment on the blade part casting and the shaft hub part casting in two steps; finally welding and molding the blade part casting and the shaft hub part casting after the thermal spraying treatment is performed on the blade part casting and the shaft hub part casting; and slowly cooling the blade part casting and the shaft hub part casting to a room temperature. The method for manufacturing the ship propeller, disclosed by the invention, is advantaged in that the method is simple to operate and convenient to implement; and the mechanical strength and plasticity of the propeller can be obviously improved.


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    Title :

    Method for manufacturing ship propeller


    Contributors:
    ZHANG XIAN (author) / YAO CHUANFENG (author) / RUAN RAN (author) / DENG XIANFA (author)

    Publication date :

    2015-11-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B23H Metallbearbeitung durch Einwirkung elektrischen Stromes hoher Stromdichte auf ein Werkstück unter Benutzung einer Elektrode anstelle eines Werkzeugs , WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL / C22C Legierungen , ALLOYS / C23C Beschichten metallischer Werkstoffe , COATING METALLIC MATERIAL



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