| 摘要 |
A method and apparatus for making mineral insulated cable, in which preformed blocks of mineral insulant are continuously supplied, each of the blocks having at least one groove therein and having a first end and a second end. The blocks are continuously disposed in at least one column, with the first end of each of the blocks in the column abutting against the second end of an adjacent one of the blocks in the column, and with the at least one groove of each of the blocks in the column in alignment with the at least one groove of the adjacent one of the blocks in the column, to form a continuous groove extending over the length of the column of blocks. At least one conductor is continuously laid in the at least one continuous groove, and a metal tube is continuously formed around the resultant conductor/blocks assembly with the at least one conductor embedded in the mineral insulant and electrically insulated from the metal tube by the mineral insulant. Preferably, at least one step of cross-section reduction of the entubed assembly is performed, with each followed by an annealing step.
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