Mould for isostatic pressing
    9.
    发明授权
    Mould for isostatic pressing 失效
    用于等静压的模具

    公开(公告)号:US5631029A

    公开(公告)日:1997-05-20

    申请号:US698824

    申请日:1996-08-16

    摘要: An apparatus and a method for forming compacts having reduced elephant's feet effect is disclosed. The apparatus includes a press for dry bag isostatic pressing, the press body having a cavity with at least one open end formed therein, an elastic mould, operatively positioned inside the cavity for compacting metal powder, means, operatively connected to the mould for expanding the mould and compacting the metal powder, and at least one press member having a base section substantially normal to the cavity and an insert section extending from base section into the cavity, the insert section being formed in the shape of any one of a plurality of geometric shapes.

    摘要翻译: 公开了一种用于形成具有减小的大象脚部效果的压块的装置和方法。 该设备包括用于干袋等静压的压力机,压力机体具有形成在其中的至少一个开放端的空腔,弹性模具,可操作地定位在空腔内部,用于压实金属粉末,可操作地连接到模具以扩展 模制和压实金属粉末,以及至少一个具有基本上垂直于空腔的基部的按压构件和从基部延伸到空腔中的插入部分,所述插入部分形成为多个几何形状中的任何一个 形状。

    Method of forming porous bodies of molybdenum or tungsten
    10.
    发明授权
    Method of forming porous bodies of molybdenum or tungsten 失效
    形成钼或钨多孔体的方法

    公开(公告)号:US5213612A

    公开(公告)日:1993-05-25

    申请号:US777943

    申请日:1991-10-17

    IPC分类号: B22F3/11

    摘要: A method for forming a porous body of a metal from the group consisting of molybdenum, molybdenum alloy, tungsten, tungsten alloy, or mixtures thereof comprises foaming a mixture of a sinterable powder of the metal and a foaming agent in a volume ratio of about 0.6 to 3.5:1 respectively, to form a foam having the metal powder dispersed therein. The foam is heated in a reducing atmosphere that promotes interparticle diffusion and bonding, to decompose the foam and sinter the metal powder to form the porous body.

    摘要翻译: 从钼,钼合金,钨,钨合金或其混合物组成的组中形成金属多孔体的方法包括以约0.6的体积比将金属的可烧结粉末与发泡剂的混合物发泡 至3.5:1,以形成其中分散有金属粉末的泡沫。 泡沫在还原气氛中加热,促进颗粒间扩散和粘合,分解泡沫体并烧结金属粉末以形成多孔体。