Continuous casting production method of oxygen-free silver copper

Abstract

The invention discloses a continuous casting production method of oxygen-free silver copper, and relates to the technical field of metal material processing. The continuous casting production method of the oxygen-free silver copper includes the steps that the high purity electrolytic copper is dried in a preheating furnace, so that the surface of the high purity electrolytic copper is anhydrous and oil-free, the dried high purity electrolytic copper is transferred to a melting furnace for melting, and the melted copper water of the high purity electrolytic copper is transferred into a heat insulation furnace through a siphon; and in the heat insulation furnace, the melted copper water is processed into the oxygen-free copper C10200, and when P and O both reach 10 PPM under the condition ofproducing three oxygen-free copper ingot C10200, the oxygen-free copper C10200 is subjected to continuous production to produce the oxygen-free silver copper C10500 / C10700. By arranging a fully enclosed casting environment, the protective gas is led into the bottom, and the calcined charcoal is covered on the copper liquid surface so as to isolate the air from being in direct contact with the copper liquid, the fact that the oxygen content of the copper liquid in the production process is stable within the qualifying range is ensured, meanwhile, the copper water is evenly mixed with the silver through the protective gas blown into the bottom, and 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...

AI Technical Summary

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