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Copper-tin-zirconium intermediate alloy and manufacture method thereof

A master alloy and copper-tin technology, which is applied in the field of copper-tin-zirconium master alloy and its preparation, can solve the problems of copper oxidation of copper-tin-zirconium master alloy, large burning loss of alloy elements Zr and Sn, and difficult control of the ratio, and achieve copper oxidation The effect of less degree, less burning loss and volatilization, and less burning loss

Inactive Publication Date: 2009-01-14
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The usual method of preparing Cu-Zr or Cu-Sn alloys is to melt the copper first, then add the alloying elements into the molten copper liquid by adding excessive Zr or Sn, stir them evenly, and then cast them into shape, and then carry out The calculation of the yield rate will be fed back to the next alloy preparation. In the copper-tin-zirconium master alloy prepared by this method, the copper oxidation is serious, and the burning loss of the alloy elements Zr and Sn is large, especially for the direct preparation of the alloy contact wire. , the ratio is very difficult to control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1. First weigh 5 kg of raw material tin, 1 kg of zirconium, and 94 kg of copper;

[0015] 2. Heat and melt the weighed copper raw material in a vacuum melting furnace, and raise the temperature to 1100°C until the copper is completely melted, then adjust the vacuum to 0.5-0.8Pa, then add Zr, and quickly rush into argon to raise the pressure to 0.1~0.12MPa;

[0016] 3. After quickly adding Sn, stir it evenly with a stone mill;

[0017] 4. The reactant is directly cast into an ingot with a water-cooled copper mold to obtain a copper-tin-zirconium master alloy;

[0018] The copper and master alloy prepared according to the above-mentioned proportion and process have the following chemical composition weight percentages: Sn: 4.4%, Zr: 0.8%, Cu: 94.8%.

Embodiment 2

[0020] 1. First weigh 7.5 kg of raw material tin, 3 kg of zirconium, and 89.5 kg of copper;

[0021] 2. Heat and melt the weighed copper raw material in a vacuum melting furnace, and raise the temperature to 1150°C until the copper is completely melted, then adjust the vacuum to 0.5-0.8Pa, then add Zr, and quickly rush into argon to raise the pressure to 0.1~0.12MPa;

[0022] 3. After quickly adding Sn, stir it evenly with a stone mill;

[0023] 4. The reactant is directly cast into an ingot with a water-cooled copper mold to obtain a copper-tin-zirconium master alloy.

[0024] The copper and master alloy prepared according to the above-mentioned proportion and process have the following chemical composition weight percentages: Sn: 7.2%, Zr: 2.8%, Cu: 90%.

Embodiment 3

[0026] 1. First weigh 10 kg of raw material tin, 5 kg of zirconium, and 85 kg of copper;

[0027] 2. Heat and melt the weighed copper raw material in a vacuum melting furnace, and raise the temperature to 1100°C until the copper is completely melted, then adjust the vacuum to 0.5-0.8Pa, then add Zr, and quickly rush into argon to raise the pressure to 0.1~0.12MPa;

[0028] 3. After quickly adding Sn, stir it evenly with a stone mill;

[0029] 4. The reactant is directly cast into an ingot with a water-cooled copper mold to obtain a copper-tin-zirconium master alloy;

[0030] The copper and master alloy prepared according to the above-mentioned proportion and process have the following chemical composition weight percentages: Sn: 9.5%, Zr: 4.6%, Cu: 85.9%.

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Abstract

The invention discloses a copper-tin-zirconium intermetallic alloy preparation method, which belongs to the metal material field. The following raw materials are weighed according to the weight percentage: 5 to 10 percent of tin, 1 to 5 percent of zirconium and 85 to 94 percent of copper; the weighed copper material is heated and melded in a vacuum smelting furnace, when the temperature is increased to 1100 to 1200 DEG C, the copper is completely melded, then the vacuum degree is adjusted to 0.5 to 0.8 Pa, and after Zr is added, argon gas is rapidly injected into and the temperature is increased to 0.1 to 0.12 MPa; after Sn is rapidly added, the material is mixed with a stone stick; and ingot is directly cast by a water-cooled copper mold, so the copper-tin-zirconium intermetallic alloy is manufactured. The copper-tin-zirconium intermetallic alloy preparation method can greatly reduce the zirconium burning loss, the tin burning loss and volatilization are less because tin is added before the casting, the pollution to the environment is also less, the alloy proportion can be easily controlled, the copper oxidation degree is less, the surface of the cast product presents the black color, and presents a bright copper color after being polished, no obvious defect is found in the interior, and the copper-tin-zirconium intermetallic alloy preparation method is specially suitable for scale production and application.

Description

technical field [0001] The invention belongs to the field of metal materials, in particular to a copper-tin-zirconium master alloy and a preparation method thereof. Background technique [0002] As the speed of high-speed trains continues to increase, the wires used in high-speed railways must not only provide power, lighting, air conditioning and other electrical energy required by high-speed trains, but also bear large axial tension. Therefore, with the high-speed operation of trains, contact Wire has good tensile strength and electrical conductivity, so wire materials for high-speed railways are also constantly developing in the direction of high strength and high conductivity. [0003] The development of copper alloy materials for high-speed railway conductors has developed from high-conductivity pure copper conductors, Cu-Ag alloy conductors, to Cu-Sn alloys. Pure copper and Cu-Ag alloy wires have been produced industrially in China, but the strength of these two wires...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/02C22C1/02
Inventor 米绪军黄国杰谢水生高宝东尹向前
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG