| 摘要 |
A self-contained crucible assembly (50) for forming a weld between a pair of metal articles (190, 192), includes a container (52) with side walls (54) and a fusible bottom (56), a refractory material (60) lining the side walls (54), an exothermic weld material (64) within the container (52), an ignitor (66) partially within or close to the weld material (64) and partially external to the container (52), and a cover (74) sealing the weld material (64). The ignitor (66) may be stiffened to maintain its shape, and keep it in a desired position relative to the exothermic weld material (64). The crucible assembly (50) is configured to be placed on mold (178) having a chamber (176) therein. Upon ignition of the weld material (64) via actuation of the ignitor (66), the weld mateiral (64) reacts exothermically to produce molten weld metal and slag. The fusible bottom (56) of the container (52) is melted by the liquified molten metal, and the weld material (64) flows into a weld chamber (186) of the mold (178) to produce the weld.
|
