Vacuum semi-continuous method for casting copper chromium zirconium alloy

Abstract

The invention relates to a vacuum semi-continuous method for casting copper chromium zirconium alloy, which is characterized by following steps of (1) smelting copper zirconium intermediate alloy, (2) sending cathode copper into an intermediate frequency furnace to be smelted, adding deoxidant to deaerate and deoxidize and adding metal chromium into the intermediate frequency furnace after deaeration and deoxidization, (3) heating and drying runner in casting equipment and using gas flame to seal an opening of the runner at the position of the opening above the runner, (4) pouring liquid copper in the intermediate frequency furnace in the heated and dried runner through a furnace opening of the intermediate frequency furnace, (5) pouring the liquid copper in the runner, simultaneously throwing the copper zirconium intermediate alloy into the runner at the position identical with a falling point of the liquid copper, and (6) opening a plug rod switch on the runner to enable the liquid copper to be guided into a water cooling crystallizer through a graphite leakage pipe to be casted ingots. The vacuum semi-continuous method smelts to cast the copper chromium zirconium alloy in the air, thereby being small in investment, simple in operation, stable in ingredient control, safe and reliable.

Description

technical field [0001] The invention relates to a method for non-vacuum semi-continuous melting and casting of copper-chromium-zirconium alloy, in particular to a method for realizing semi-continuous melting and casting of high-strength and high-conductivity copper-chromium-zirconium alloy in a non-vacuum state. Background technique [0002] Cu-Cr-Zr alloy material has excellent high strength and high conductivity, its strength is 3 to 5 times that of ordinary pure copper, it has a high conductivity of 75 to 85% IACS, it can withstand high temperatures of 500 to 900 ° C without softening, and has no medium temperature brittleness. It has excellent characteristics such as no sparks due to impact, and is currently the best high-strength, high-conductivity, high-temperature-resistant copper-based alloy material with the best comprehensive performance. Components, with the scientific and technological progress of my country's electronics, electric power, and equipment manufacturin...

AI Technical Summary

Problems solved by technology

Since both Cr and Zr elements are elements with strong gas-absorbing ability, when they are prepared by atmospheric smelting, Cr and Zr elements are very prone to oxidation reaction and burning loss. It is difficult to effectively add to the copper liquid. Secondly, the high-temperature melt has a large amount of gas absorption, and it is difficult to degas. It is retained in the solid alloy and becomes a defect.

[0003] At present, the smelting of Cu, Cr, and Zr alloys in my country adopts traditional vacuum smelting technology. Due to the limitations of vacuum furnaces, the output scale is small, the process is complicated, the process is long, energy consumption is high, and the preparation cost is high. Disadvantages of Melting Cu-Cr-Zr Alloy

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