| 摘要 |
1. A method for connecting a highly electroconductive core part (2) to a jacket part (1) of refined steel, characterized in that the electroconductive core part (2), such as a copper bar, and the connection component (3) are placed inside the jacket (1) and are heat treated, at least the joint area of the pieces to be joined, in such a way that a metallurgical bond is formed between the electroconductive core part (2) and the jacket of refined steel (1). 2. A method according to claim 1, characterized in that the core part (2) is mostly copper and the connection component (3) is mostly tin, whereupon a mainly tin bronze join is formed between the jacket part (1) and the core part (2). 3. A method according to claim 1 or 2, characterized in that the connection component (3) is mainly tin. 4. A method according to any of claims 1-3, characterized in that the jacket (1) is a pipe part, of which at least one end is at least partly closed, at least during heat treatment. 5. A method according to any of claims 1-4, characterized in that the pieces to be joined together (1,2) are kept substantially horizontal during heat treatment. 6. A method according to any of claims 1-5, characterized in that at least when the pieces to be joined (1,2) are on a horizontal plane, the connection component (3) is placed on top of core part (2) inside jacket (1) before heat treatment. 7. A method according to any of claims 1-4, characterized in that the pieces to be joined together (1,2) are kept essentially in a position, which substantially differs from horizontal during heat treatment. 8. Use of the method according to any of claims 1-7, for manufacturing a suspension bar for an electrode, especially a permanent cathode, during metal electrolysis.
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