公开(公告)号：US4798615A

公开(公告)日：1989-01-17

申请号：US919962

申请日：1986-10-17

申请人： Shigemi Fukuta ,  Toshinari Amakasu ,  Ken Ugata ,  Shoichi Yoshino

发明人： Shigemi Fukuta ,  Toshinari Amakasu ,  Ken Ugata ,  Shoichi Yoshino

IPC分类号： B01D39/08 ,  B22C9/08 ,  D03D15/00 ,  B01D29/36 ,  D03D15/04

CPC分类号： B01D39/086 ,  B22C9/086 ,  D03D15/0011 ,  B01D2239/0457 ,  B01D2239/0471 ,  B01D2239/0654

摘要： A filter for molten metal having a high melting point is in the form of a net woven of glass yarns formed by twisting a multiplicity of glass fibers together. The glass fibers contain at least 75 wt. % of SiO.sub.2 and are thermally cured at a thermal shrinkage of 2.5 to 15%. The thermal shrinkage is expressed by (l-l')/.times.100 % wherein l is the length of the fiber before the thermal cure, and l' is the length of the fiber as thermally cured.

摘要翻译： 用于具有高熔点的熔融金属的过滤器是通过将多个玻璃纤维扭曲在一起而形成的玻璃丝的网状织物的形式。 玻璃纤维含有至少75wt。 ％的SiO 2，并且在2.5-15％的热收缩率下热固化。 热收缩率由（1-l'）/ x100％表示，其中l是热固化之前纤维的长度，l'是热固化的纤维的长度。

公开(公告)号：US4113002A

公开(公告)日：1978-09-12

申请号：US712068

申请日：1976-08-05

申请人： Shigemi Fukuta ,  Hiroshi Izaki ,  Shoichi Yoshino

发明人： Shigemi Fukuta ,  Hiroshi Izaki ,  Shoichi Yoshino

IPC分类号： B22D13/10 ,  B22D13/02

CPC分类号： B22D13/101 ,  B22D13/102 ,  Y10T29/49982

摘要： A chill preventing arrangement is used in a metal mold employed in centrifugal casting. The metal mold is provided, at its spigot portion, with an end plate which has a central opening smaller in diameter than the internal diameter of the metal mold main body and which includes a metallic base plate, an intermediate layer of metallic alloy formed by flame or plasma spraying on a surface of the metallic base plate contacting the molten metal for casting, and a coating of ceramic material more than 0.7 mm thick formed on the intermediate layer by flame or plasma spraying for preventing chill formation at the corresponding end portions of tubular castings.