Patent ID: 6484792
Filing Date: 2002-11-26
Classification: B23K

Abstract:
A single use, transportable reaction crucible for a metallothermic welding portion S, comprising:a crucible shell 2 made of non-metallic material and having a cylindrical casing 3, a flat base 4, and a lid 11; a separate cylindrical reaction vessel 7 that is made of refractory material and is disposed in said cylindrical casing 3 and is supported on said base 4 of said crucible shell 2, wherein said reaction vessel 7 accommodates a welding portion S and has a meltable opening in a base thereof, and wherein said reaction vessel has an outer diameter that is less than an inner diameter of said cylindrical casing 3 to thereby form an annular intermediate space 10 between said reaction vessel 7 and said cylindrical casing 3; and refractory material, in finely divided form, that fills said intermediate space 10.