Manufacture of dimensionally precise pieces by sintering
    1.
    发明授权
    Manufacture of dimensionally precise pieces by sintering 失效
    通过烧结制造尺寸精密度

    公开(公告)号:US5061439A

    公开(公告)日:1991-10-29

    申请号:US613582

    申请日:1990-11-29

    摘要: The invention relates to a method for the manufacture of dimensionally precise pieces which are at least in part made of a sintered material. The material comprises a mixture of at least three pulverous constituents, of which the first is mainly of a metal of the iron group and coarse by its particle size, the second constituent contains copper and/or phosphorus, and the third constituent contains mainly copper. For the material, a powder mixture is made which contains the largest amount of the third constituent and substantially less of both the first and the second constituents. The powder mixture is fed into a cavity preferably a mold-cavity and is sintered without compression of the powder mixture, without pressure, in this cavity and at a temperature which is above the melting point of the said second constituent.

    摘要翻译: PCT No.PCT / SE90 / 00198 Sec。 371日期1990年11月29日第 102(e)1990年11月29日PCT PCT 1990年3月28日PCT公布。 公开号WO90 / 11855 1990年10月18日的日期。本发明涉及至少部分由烧结材料制成的尺寸精确的片的制造方法。 该材料包括至少三种粉末成分的混合物,其中第一种主要是铁基金属,其粒径粗大,第二种成分含有铜和/或磷,第三种成分主要含有铜。 对于该材料,制成含有最大量的第三组分并且基本上少于第一和第二组分的粉末混合物。 将粉末混合物进料到空腔中,优选地进入模腔,并且在该空腔中并且在高于所述第二组分的熔点的温度下,无压缩地烧结粉末混合物。

    Method and device for shaping details by means of superplastic forming
    2.
    发明授权
    Method and device for shaping details by means of superplastic forming 失效
    通过超塑性成型形成细节的方法和装置

    公开(公告)号:US5592842A

    公开(公告)日:1997-01-14

    申请号:US519707

    申请日:1995-08-28

    申请人: Olli J. Nyrhila

    发明人: Olli J. Nyrhila

    CPC分类号: B21D26/055 Y10S72/709

    摘要: A method and an apparatus for forming details in a foil or plate material by means of superplastic forming, wherein the foil or plate material is heated over a selected localized area to a suitable temperature and simultaneously exposed to a fluid pressure so that the material is slowly deformed to a predetermined desired shape. Localized heating of the foil or plate is provided by guiding a laser beam (17) over the selected localized area of the foil or plate (12).

    摘要翻译: 一种用于通过超塑性成形在箔或板材中形成细节的方法和装置,其中将箔或板材料在选定的局部区域加热到合适的温度并同时暴露于流体压力,使得材料缓慢 变形为预定的所需形状。 通过将激光束(17)引导到箔或板(12)的选定的局部区域上来提供箔或板的局部加热。