A preparation process of external oxidation dispersion strengthened copper alloy

Abstract

The invention relates to a preparation process of external oxidation dispersion strengthened copper alloy, which involves melting metal copper and metal aluminum in proportion, the temperature of the melting furnace is 1250-1300°C, continuously casting the smelted copper and aluminum alloy, and controlling the casting crystallization The cooling water temperature of the device is used to obtain oxygen-containing alloy copper rods; the oxygen-containing alloy copper rods are repeatedly and continuously extruded in a closed extrusion chamber by a continuous extruder to obtain alloy copper rods with uniform components; then high-temperature aging treatment is performed, Substitution reaction occurs fully under protective gas to ensure the formation of Al2O3, and after cold drawing treatment, dispersion-strengthened copper alloy is obtained, and unqualified products are eliminated to obtain finished Al2O3 dispersion-strengthened copper alloy. The invention shortens the preparation process of the dispersion-strengthened copper alloy, has low cost, and the obtained copper alloy product has stable quality and excellent performance, satisfies the social demand for high-strength and high-conductivity dispersion-strengthened copper alloy, is convenient to be popularized and used in more fields, and has economic benefits Well, it's practical.

Description

technical field [0001] The invention belongs to the technical field of copper alloy processing in the nonferrous metal industry, and in particular relates to a preparation process of external oxidation dispersion strengthened copper alloy. Background technique [0002] At present, the two most commonly used methods for producing alumina dispersion-strengthened copper alloys are internal oxidation and mechanical alloying. Preparation→oxygen mixing→isostatic pressing→internal oxidation→reduction→envelope→hot extrusion→drawing→testing→finished product. Its representative patent is: "A kind of Al 2 o 3 Dispersion strengthened copper alloy and its preparation method", application number: CN200610128421.8. The process of mechanical alloying process is: copper powder + alumina powder → powder mixing → isostatic pressing → reduction → hot extrusion → drawing → testing → product. Its representative patent is: "Process Method for Producing Dispersion Strengthened Copper Alloy Mate...

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Problems solved by technology

[0003] The above two methods are powder metallurgy methods, the process flow is long, and the environmental quality requirements are strict in the process of alloy powder making and mixing. A little carelessness will pollute the alloy powder and affect the next process and finished products. quality

The long process route has resulted in many management elements, difficult processing, low yield rate, unstable quality, and difficulty in mass supply, so the degree of marketization is not high so far

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