Method of making tungsten carbide based hard metals
    1.
    发明授权
    Method of making tungsten carbide based hard metals 失效
    制造碳化钨基硬质合金的方法

    公开(公告)号:US06878182B2

    公开(公告)日:2005-04-12

    申请号:US10320619

    申请日:2002-12-17

    申请人: Olof Kruse

    发明人: Olof Kruse

    摘要: The present invention relates to economic and environment-friendly slurries and their preparation, handling, and spray drying for the production of cemented carbide based hard metals. The slurry is ethanol-water based and contains metallic and metal carbide raw materials as well as polyethylene glycol (PEG) and a very low concentration of polyethylenimine (PEI). The concentration of PEI is 0.01-

    摘要翻译: 本发明涉及经济和环境友好的浆料及其制备,处理和喷雾干燥以生产硬质合金基硬质合金。 浆料为乙醇 - 水为基础,含有金属和金属碳化物原料以及聚乙二醇(PEG)和非常低浓度的聚乙烯亚胺(PEI)。 PEI的浓度为原料重量的0.01〜0.1%。 结果,生产低粘度浆料,其在制备,处理和喷雾干燥中需要较少使用乙醇,能量,人力和设备时间。

    Method of making tungsten carbide based hard metal tools or components
    2.
    发明授权
    Method of making tungsten carbide based hard metal tools or components 失效
    制造碳化钨基硬质合金工具或部件的方法

    公开(公告)号:US07094821B2

    公开(公告)日:2006-08-22

    申请号:US10724051

    申请日:2003-12-01

    IPC分类号: C04B35/634 C04B35/56 B22B3/12

    摘要: Preparation, handling, and spray drying, in an economic and environmentally-friendly way, of slurries for the production of tungsten carbide based hard metal tools or components by the powder injection molding or extrusion route is disclosed. The slurry used is based on ethanol-water and contains metal carbide and metallic raw materials as well as stearic acid and a low concentration of polyethylenimine (PEI). The concentration of PEI is 0.01–1 wt % of the raw material weight. This combination results in low-viscous slurries, which require less use of ethanol, energy, manpower, and equipment time in their preparation, handling, and spray drying. The invention also relates to the powder obtained by using the method.

    摘要翻译: 公开了以经济和环保方式制备,处理和喷雾干燥用于通过粉末注射成型或挤出路线生产碳化钨基硬金属工具或部件的浆料。 使用的浆液是以乙醇 - 水为基础,含有金属碳化物和金属原料以及硬脂酸和低聚乙烯亚胺(PEI)。 PEI的浓度为原料重量的0.01-1%(重量)。 这种组合导致低粘度浆液,其在制备,处理和喷雾干燥中需要较少使用乙醇,能量,人力和设备时间。 本发明还涉及通过使用该方法获得的粉末。