H - Electricity – 05 – B
Patent
H - Electricity
05
B
307/36
H05B 3/78 (2006.01) B22D 1/00 (2006.01) H05B 3/03 (2006.01) H05B 3/60 (2006.01)
Patent
CA 1274874
ABSTRACT The invention relates to a method and apparatus for supplying heat energy to a metal weld or similar electroconductive fluid. According to the method, a rod-like element or elements are partly immersed in the metal melt or electroconductive fluid. An end portion of each element is connected to electric power. The end portion of each element and another end portion disposed at the opposite end of each element consist of an electrocon- ductive material, while a relatively long center portion of each element consists of an electrically resistant material. A segment of each element which is contiguous with at least the portion of each element which is comprised of electrically resistant material, is coated with an electrically insulated heat conductive coat which allows heat transfer from the electrically resistant portion of each element to the melt. The heating elements for the implementation of the method are disposed so that the end portions project from the melt to allow connection to an electric power source. The end portion of each element consists of a material that is a good electric conductor, and the longer center portion is composed of an electrically resistant material. The coating consists of a material made from one or more oxides of metal or metalloids.
501206
Fetherstonhaugh & Co.
Scantherm A/s
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