Vacuum semi-continuous method for casting copper chromium zirconium alloy

A copper-chromium-zirconium, semi-continuous technology, which is applied in the field of non-vacuum semi-continuous melting and casting of copper-chromium-zirconium alloys, can solve the problems of large air intake of high-temperature melts, prone to oxidation reactions, and difficult to effectively add, etc., to achieve alloy composition control The effects of stability, chemical composition up to standard, and production capacity improvement

Active Publication Date: 2012-02-22
江苏隆达超合金股份有限公司
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  • Application Information

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

Method used

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  • Vacuum semi-continuous method for casting copper chromium zirconium alloy
  • Vacuum semi-continuous method for casting copper chromium zirconium alloy
  • Vacuum semi-continuous method for casting copper chromium zirconium alloy

Examples

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Effect test

Embodiment 1

[0024] Embodiment 1: A kind of method for non-vacuum semi-continuous melting and casting of copper-chromium-zirconium alloy adopts the following process steps:

[0025] (1) 58% copper and 38% zirconium are smelted in a vacuum furnace by mass percentage to obtain a copper-zirconium master alloy for subsequent use; the vacuum in the vacuum furnace is 10Pa, the smelting temperature is 1400°C, and the smelting time is 70 minutes; commercially available copper-zirconium master alloys can also be used;

[0026] (2) According to the composition and proportioning ratio of copper-chromium-zirconium alloy, the unit is mass percentage: copper-zirconium master alloy with zirconium equivalent of 0.1%, metal chromium 1.2%, and the balance is cathode copper;

[0027] (3) Put the cathode copper into the intermediate frequency furnace for smelting, the smelting temperature is 1250°C, and the smelting time is 70 minutes; add deoxidizer pure magnesium for degassing and deoxidation, the amount of...

Embodiment 2

[0032] Embodiment two: a kind of method for non-vacuum semi-continuous melting and casting copper-chromium-zirconium alloy adopts the following process steps:

[0033] (1) 62% copper and 42% zirconium are smelted in a vacuum furnace by mass percentage to obtain a copper-zirconium master alloy for subsequent use; the vacuum degree in the vacuum furnace is 15Pa, the melting temperature is 1500° C., and the melting time is 60 minute;

[0034] (2) According to the composition and proportioning ratio of copper-chromium-zirconium alloy, the unit is mass percentage: copper-zirconium master alloy with zirconium equivalent of 0.11%, metal chromium 1.18%, and the balance is cathode copper;

[0035] (3) Put the cathode copper into the intermediate frequency furnace for smelting, the smelting temperature is 1300°C, and the smelting time is 60 minutes; add deoxidizer pure magnesium for degassing and deoxidation, the amount of pure magnesium added is 0.06% of the weight of the copper-chromi...

Embodiment 3

[0040] Embodiment three: a kind of method for non-vacuum semi-continuous melting and casting copper chromium zirconium alloy, adopt following process step:

[0041] (1) 59% copper and 39% zirconium are smelted in a vacuum furnace by mass percentage to obtain a copper-zirconium master alloy for subsequent use; the vacuum degree in the vacuum furnace is 11Pa, the smelting temperature is 1420° C., and the smelting time is 62 minute;

[0042] (2) According to the composition and proportioning ratio of copper-chromium-zirconium alloy, the unit is mass percentage: copper-zirconium master alloy with zirconium equivalent of 0.12%, metal chromium 1.14%, and the balance is cathode copper;

[0043] (3) Put the cathode copper into the intermediate frequency furnace for smelting, the smelting temperature is 1260°C, and the smelting time is 62 minutes; add deoxidizer pure magnesium for degassing and deoxidation, the amount of pure magnesium added is 0.045% of the weight of the copper-chromi...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C1/06C22C9/00B22D1/00
Inventor 翁祥金浦益龙
Owner 江苏隆达超合金股份有限公司
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