Copper alloy liquid purifying device and method used for up-drawing continuous casting

Abstract

The invention discloses a copper alloy liquid purifying device and method used for up-drawing continuous casting. The purifying device comprises a bottom blowing impurity removing device arranged at the bottom of the interior of a heat insulation bin of an up-drawing continuous casting furnace and/or a filtering and purifying device arranged at the end portion of an up-drawing continuous casting crystallizer, wherein the filtering and purifying device is located in the heat insulation bin of the up-drawing continuous casting furnace. The purifying method includes the steps that inert gas is blown to the bottom of the interior of the heat insulation bin of the up-drawing continuous casting furnace containing copper alloy liquid through the bottom blowing impurity removing device, and/or after the copper alloy liquid flows into the filtering and purifying device to be filtered, the copper alloy liquid then enters the up-drawing continuous casting crystallizer. By means of the copper alloy liquid purifying device and method used for up-drawing continuous casting, due to the fact that the copper alloy liquid is purified, impurities and gas in the copper alloy liquid can be prevented from entering a copper alloy wire rod, and therefore the quality of the copper alloy wire rod is effectively improved, large-length continuous drawing of ultrathin copper alloy wires is better achieved,and the wire breaking rate is reduced; and transformation on the structure of an up-drawing furnace body and the crystallizer is avoided, operability is good, implementation is easy, and safety and reliability are achieved.

Description

technical field [0001] The invention belongs to the technical field of ultrafine copper alloy wire processing, and in particular relates to a copper alloy liquid purification device and purification method for upward continuous casting. Background technique [0002] Ultra-fine copper alloy wire (diameter less than 0.05mm) is the key basic material for the preparation of high-end electronic product transmission lines, used to prepare integrated circuit packaging wires, micro-motor transmission lines, high-frequency ultra-fine coaxial wires, high-speed broadband transmission cables, communication terminal transmission lines And medical precision wires, etc. The main types of materials are Cu-Ag alloy and Cu-Sn alloy. The main production process is: copper alloy blank→drawing and reducing→heat treatment→subsequent drawing and related wire and cable processing. At present, the blanks used in the domestic production of such ultra-fine wires almost rely on imports. Foreign copper...

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Problems solved by technology

In order to realize the localization of wire blanks for ultra-fine copper alloy wire production, reduce production costs, and improve the flexibility of production organization, some domestic manufacturers have begun to use the upward continuous casting process to replace the continuous casting and rolling process to produce such copper alloy wire blanks research, but the effect is not obvious, the blanks produced by the trial still cannot meet the requirements for the production of ultra-fine copper alloy wires, and can only meet the continuous drawing of filaments with a diameter of 0.05mm or more, and the breakage rate is high

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