A method for producing a high purity copper rod

Abstract

The application belongs to the technical field of non-ferrous metal processing, and discloses a method for producing high-purity copper rods. First, high-purity cathode copper is smelted, and iron, phosphorus and silver micro-alloy elements are sequentially added to realize deep deoxidization and accurate composition control under the protection of charcoal and inert gas. Second, after obtaining a rod blank through up-drawing continuous casting, the rod blank is passed through a controllable oxidation chamber in a specific temperature and oxygen concentration atmosphere to generate cuprous oxide lubricating film in situ. Third, the rod blank with the film is sequentially subjected to online recrystallization annealing, rapid cooling, large-deformation continuous drawing without intermediate annealing by using the lubricating film, and online aging treatment. Finally, the copper rod is subjected to environmentally-friendly pickling, coating of a protective layer and online detection. Through the synergy of micro-alloying design and integrated online thermal mechanical treatment, the application solves the contradiction between strength and electrical conductivity, and the produced copper rod has high electrical conductivity and high strength, and the process is short, efficient and environmentally-friendly.

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