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    CASTING DEVICE
    4.
    发明公开
    CASTING DEVICE 审中-公开

    公开(公告)号：EP3970878A1

    公开(公告)日：2022-03-23

    申请号：EP20806502.9

    申请日：2020-05-18

    申请人： Metts Corporation

    发明人： NAKASHIMA Hiroyuki

    IPC分类号： B22D17/22 ,  B22D18/06 ,  B22D29/04 ,  B22C9/06

    摘要： An object is to provide a casting device that is capable of maintaining depressurization in a cavity. A casting device (1) is configured to move an extrusion pin (3), slidably inserted in an insertion hole (29) formed in a mold (2), into a cavity (20) in the mold to release a casted product. The casting device (1) includes a depressurized space creator (4) configured to create a depressurized space (40) on a reverse side of a cavity surface to define the cavity (20). The depressurized space creator (4) covers an opening of the insertion hole (29) to maintain depressurization in the cavity (20).

    CASTING MOLD, COUNTER-PRESSURE CASTING METHOD AND LOW-PRESSURE CASTING METHOD
    5.
    发明公开
    CASTING MOLD, COUNTER-PRESSURE CASTING METHOD AND LOW-PRESSURE CASTING METHOD 审中-公开

    公开(公告)号：EP3960330A1

    公开(公告)日：2022-03-02

    申请号：EP21191812.3

    申请日：2021-08-17

    申请人： Citic Dicastal Co., Ltd.

    发明人： KANG, Longtao ,  XU, Zuo ,  WU, Hanqi ,  ZHU, Zhihua ,  XIONG, Guoyuan

    IPC分类号： B22D18/04 ,  B22D18/06

    摘要： The application relates to the technical field of casting and provides a casting mold, a counter-pressure casting method and a low-pressure casting method. The casting mold includes an upper mold insert arranged on an upper mold, a riser cavity is formed in a lower part of the upper mold insert, the riser cavity communicates with a mold cavity, an air pipe communicating with the riser cavity is arranged on the upper mold insert, one end of the air pipe is located at a top of the riser cavity, and compressed air can be introduced. The compressed air is introduced into the air pipe in the casting process, an upper part of the riser cavity forms a pressure with the same order of magnitude in a heat-insulating furnace, and the pressure of the riser is transmitted to a far-end defect position through local extrusion, thereby achieving the purpose of feeding the defect position to eliminate the defect.