A kind of continuous casting production method of oxygen-free silver copper

Abstract

The invention discloses an oxygen-free silver-copper continuous casting production method, which relates to the technical field of metal material processing. The oxygen-free silver-copper continuous casting production method comprises: drying high-purity electrolytic copper in a preheating furnace, Make the surface of high-purity electrolytic copper water-free and oil-free, transfer the dried high-purity electrolytic copper to the melting furnace for melting, and transfer the copper water after the high-purity electrolytic copper is melted to the holding furnace through the siphon, and melt it in the holding furnace The final copper water is processed into oxygen-free copper C10200. When P and O both reach 10PPM, three oxygen-free copper ingots C10200 are produced, and the oxygen-free copper C10200 is continuously produced into oxygen-free silver copper C10500 / C10700. By setting up a fully enclosed casting environment, introducing protective gas at the bottom and covering the surface of the copper liquid with calcined charcoal to isolate the air from direct contact with the copper liquid, it is ensured that the oxygen content of the copper liquid is stable within the acceptable range during the production process At the same time, the protective gas blown through the bottom makes the copper water and silver evenly mixed, so that the silver content of the oxygen-free silver copper produced is uniform.

Description

technical field [0001] The invention relates to the technical field of metal material processing, in particular to an oxygen-free silver-copper continuous casting production method. Background technique [0002] Oxygen-free silver-copper has good conductivity, fluidity and wettability. It is the basic metal material for manufacturing commutators. It has the characteristics of high hardness, wear resistance and strong welding resistance. The rectifier made of oxygen-free silver-copper The sub can ensure the high speed and electromagnetic load requirements of the micro motor. [0003] In the process of realizing the present invention, the inventors have found that there are at least the following problems in the prior art: At present, the processing technology of oxygen-free silver copper for commutators at home and abroad is vertical semi-continuous casting, but there is oxygen in this process. The problem of unstable content and uneven silver content. Contents of the inve...

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Problems solved by technology

[0004] In order to overcome the deficiencies of related products in the prior art, the present invention proposes an oxygen-free silver-copper continuous casting production method to overcome the problems of unstable oxygen content and uneven silver content in the existing oxygen-free silver-copper processing technology