Method for the forming of ceramic green parts
    5.
    发明授权
    Method for the forming of ceramic green parts 失效
    形成陶瓷绿色部件的方法

    公开(公告)号:US06558613B1

    公开(公告)日:2003-05-06

    申请号:US09036754

    申请日:1998-03-09

    IPC分类号: B28B114

    摘要: The well known slip casting process for the production of ceramic green parts, in which hardening is achieved by water removal with porous molds, is characterized by disadvantages in terms of strength, shrinkage during drying and problems with cracking during drying. The present invention avoids these disadvantages and produces ceramic green parts by changing the surface potential of powder particles in the slip instead of by removing water. Further more the coagulation strength is increased by adding polymers or extremely fine divided colloidal particles.

    摘要翻译: 用于生产陶瓷绿色部件的众所周知的滑移浇铸方法,其中通过多孔模具除水来实现硬化,其特征在于强度,干燥期间的收缩率和干燥期间的开裂问题。 本发明避免了这些缺点,并且通过改变粉末中的粉末颗粒的表面电位而不是除去水来产生陶瓷绿色部件。 此外,通过加入聚合物或极细分散的胶体颗粒,凝聚强度进一步提高。

    Process for producing ceramic green compacts by double layer compression
    7.
    发明授权
    Process for producing ceramic green compacts by double layer compression 失效
    通过双层压缩生产陶瓷压坯的方法

    公开(公告)号:US5667548A

    公开(公告)日:1997-09-16

    申请号:US351370

    申请日:1995-02-03

    CPC分类号: C04B35/622 C04B35/632

    摘要: The invention concerns the field of slip casting for producing green compacts. The disadvantage of state-of-the art slip casting is among others the need for removing the water through porous molds, the resulting shrinkage and the tendency of the green compact to form shrinkage cracks. These disadvantages are eliminated by internally coagulating by compression the double layer of solid slip particles, so that the green compact may be solidified without the need for removing the water.

    摘要翻译: PCT No.PCT / CH94 / 00070 Sec。 371日期:1995年2月3日 102(e)1995年2月3日PCT PCT 1994年4月7日PCT公布。 出版物WO94 / 24064 日期:1994年10月27日本发明涉及用于制造生坯的滑动铸造领域。 现有技术的滑移浇注的缺点在于,需要通过多孔模具去除水分,导致收缩率和生坯的形成收缩裂缝的趋势。 通过压缩双层固体滑爽颗粒进行内部凝结来消除这些缺点,使得生坯可以固化而不需要去除水分。