| 摘要 |
A self-contained crucible assembly for forming a weld between a pair of metal articles, includes a container with side walls and a fusible bottom, a refractory material lining the side walls, an exothermic weld material within the container, an ignitor partially within or close to the weld material and partially external to the container, and a cover sealing the weld material. The ignitor may be stiffened to maintain its shape, and keep it in a desired position relative to the exothermic weld material. The crucible assembly is configured to be placed on mold having a chamber therein. Upon ignition of the weld material via actuation of the ignitor, the weld material reacts exothermically to produce molten weld metal and slag. The fusible bottom of the container is melted by the liquified molten metal, and the weld material flows into a weld chamber of the mold to produce the weld. |
