Method of repairing large castings
    4.
    发明授权
    Method of repairing large castings 失效
    修复大型铸件的方法

    公开(公告)号:US3942578A

    公开(公告)日:1976-03-09

    申请号:US517992

    申请日:1974-10-25

    IPC分类号: B22C23/02 B22D7/06 B23K23/00

    CPC分类号: B22C23/02 B22D7/066 B23K23/00

    摘要: A method of repairing large castings, such as ingot molds and mold stools, by employing an aluminothermic reduction reaction. The resultant repaired article has a metallurgically bonded plug in the crack, hole, break, or eroded surface. An alternative repair method of big-end-up ingot molds is disclosed which comprises forming a ceramic lining on the bottom of the mold.

    摘要翻译: 通过使用铝热还原反应来修复大型铸件(例如铸模和模具)的方法。 所得的修补物品在裂纹,孔,断裂或侵蚀的表面中具有冶金结合的塞子。 公开了一种大型铸锭模具的替代修复方法,其包括在模具的底部形成陶瓷衬里。

    Method for containing the molten reaction products of a reactive
cladding process
    7.
    发明授权
    Method for containing the molten reaction products of a reactive cladding process 失效
    用于包含反应性包覆工艺的熔融反应产物的方法

    公开(公告)号:US3933191A

    公开(公告)日:1976-01-20

    申请号:US485193

    申请日:1974-07-02

    IPC分类号: B23K23/00 C23C18/02 C23C20/00

    摘要: Method and apparatus for containing the molten reaction products of a reactive cladding process, such as an aluminothermic reduction cladding process, in which a refractory-lined perimeter rests on either a sand bed or a steel base. A second perimeter surrounding the inner perimeter and forming an annular space therewith is also situated on either the sand bed or the steel base. Sand placed in the annular space between the two perimeters chills any molten reaction products which escape the confines of the inner perimeter, preventing any spread of this material.

    摘要翻译: 用于容纳反应性包覆工艺的熔融反应产物的方法和装置,例如铝热还原包覆工艺,其中耐火材料衬里的周边搁置在砂床或钢基底上。 围绕内周边并与其形成环形空间的第二周边也位于砂床或钢基座上。 放置在两个周边之间的环形空间中的沙子会冷却任何逃离内周界限的熔融反应产物,从而防止这种材料的扩散。