公开(公告)号：US5490882A

公开(公告)日：1996-02-13

申请号：US983156

申请日：1992-11-30

申请人： Emanuel M. Sachs ,  Michael J. Cima ,  James F. Bredt ,  Satbir Khanuja

发明人： Emanuel M. Sachs ,  Michael J. Cima ,  James F. Bredt ,  Satbir Khanuja

IPC分类号： B08B3/10 ,  B08B3/12 ,  B08B5/04 ,  B08B7/00 ,  B08B9/00 ,  B08B9/08 ,  B22C9/18 ,  B22C23/02 ,  B22F3/00 ,  B24B1/04 ,  B29C33/56

CPC分类号： B22F3/008 ,  B08B3/10 ,  B08B3/12 ,  B08B5/04 ,  B08B7/00 ,  B08B9/00 ,  B22C9/18 ,  B24B1/04 ,  B29C33/56

摘要： A technique for removing loose powder from the interior surfaces of ceramic molds made using layer manufacturing processes, such as three dimensional printing processes. The interior of a mold can be filled with liquid, such as water, which is boiled by applying microwave energy of a frequency selected to heat the liquid. The particles are entrained in the flow caused by the boiling liquid. Alternatively, fine particles are introduced into the mold and the mold is agitated to dislodge the particles and the powder so that they can be poured out of the mold. Such technique tends also to remove the surface finish of the mold. Any of the particles which remain can be dissolved in a liquid and removed in the liquid from the mold. Further, the surface finish of the mold can be improved by casting a slip of fine particles onto the surface to form a generally level, and preferably non-conformal, coating on the surfaces.

摘要翻译： 从使用层制造工艺（例如三维印刷工艺）制成的陶瓷模具的内表面去除松散粉末的技术。 模具的内部可以充满液体，例如水，其通过施加频率选择的加热液体的微波能量来煮沸。 颗粒被夹带在由沸腾液体引起的流中。 或者，将细颗粒引入模具中并搅拌模具以移除颗粒和粉末，使得它们可以从模具中倒出。 这种技术也可以去除模具的表面光洁度。 残留的任何颗粒都可以溶解在液体中并从模具中移出液体。 此外，可以通过将表面上的微细颗粒滑移到表面上以形成表面上的大致水平的，优选非保形的涂层来改善模具的表面光洁度。