Process for production of smelting material containing copper, chromium and at least one volatile component and consumable electrode for use in such a process

摘要

To produce smelting materials based on copper and chromium, an electric arc-smelting process is applied, in which the electrode material melting off from a consumable electrode of predetermined empirical composition is collected in a water-cooled mould for cooling without macroscopic segregation of copper and chromium. For smelting the material with a further readily volatile component, a consumable electrode is used according to the invention, which partially consists of a solid alloy of copper with the readily volatile component, the concentration of the readily volatile component in the alloy being higher than in the empirical composition of the smelting material, and the readily volatile component remains bound in the smelting material during the smelting. In the appropriate consumable electrode, which specifically consists of copper and chromium as well as tellurium and/or selenium and/or antimony as the readily volatile component, the latter is at least partially alloyed in the copper as an intermetallic compound, the copper-tellurium alloy or copper-selenium alloy or copper-antimony alloy being present as a compact part in the electrode structure. …IMAGE…