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Rare earth oxygen-free copper based alloy and production process thereof

A production process, oxygen-free copper technology, applied in the field of rare earth oxygen-free copper-based alloys and its production process, can solve the problem of inability to isolate oxidation, etc., and achieve the effect of high strength and high conductivity

Inactive Publication Date: 2014-06-25
黄学志
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the structural characteristics of the equipment, it is not melted and crystallized under protective atmosphere or vacuum conditions, and cannot be isolated from oxidation.
Although charcoal is used to isolate the air and deoxidize, the product can only reach the oxygen content (≤20ppm) of the No. 2 oxygen-free copper of GB3952.2-89 (oxygen-free round copper rod), which is ≤ 10ppm has a certain gap, and the gap with foreign oxygen-free copper content ≤ 3ppm is even bigger

Method used

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  • Rare earth oxygen-free copper based alloy and production process thereof
  • Rare earth oxygen-free copper based alloy and production process thereof
  • Rare earth oxygen-free copper based alloy and production process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0051] A rare-earth oxygen-free copper-based alloy, copper is added with rare-earth elements La, Mn and lithium. The capacity of the industrial frequency furnace for melting, heat preservation and lead rod production is 300kg, and the copper in the furnace is 300kg when it is full. After the copper temperature in the melting furnace reaches 1260°C, add additives gradually with a feeder, add La0.12kg, Mn0.03kg in one furnace, add lithium as Li-Cu master alloy, and the ratio of lithium in Li-Cu master alloy is 10.1w %, add lithium 0.15kg in one furnace. At the same time, use green tree sticks to continuously stir mechanically for 20 minutes, then use six lead rods in the holding furnace to start using the crystallizer lead rods according to the process, and the copper-based alloy rods will start to be continuously drawn upwards, producing 800kg per hour and melting at power frequency Copper and additives are also continuously added to the furnace. Copper and La, Mn, Li-Cu mast...

Embodiment 2

[0055] A rare-earth oxygen-free copper-based alloy, copper is added with rare-earth elements Ce, Mn and lithium. The capacity of the industrial frequency furnace for melting, heat preservation and lead rod production is 300kg, and the copper in the furnace is 300kg when it is full. After the copper temperature in the melting furnace reaches 1350°C, add additives gradually with a feeder, add Ce0.24kg, Mn0.06kg in one furnace, lithium is added as Li-Cu master alloy, and the proportion of lithium in Li-Cu master alloy is 10.2w %, add lithium 0.45kg in one furnace. At the same time, use an electromagnetic rod to continuously stir electromagnetically for 30 minutes, and then use six lead rods in the holding furnace to start using the crystallizer lead rods according to the process, and the copper-based alloy rods will start to be continuously drawn up, and the production will be 800kg per hour. Keep adding copper and . Copper and additives, Ce, Mn, Li-Cu master alloy are added se...

Embodiment 3

[0059] A rare earth oxygen-free copper-based alloy, copper is added with rare earth elements La and Ce, Mn, and lithium, and the mass ratio of La and Ce is 1:2. The capacity of the industrial frequency furnace for melting, heat preservation and lead rod production is 300kg, and the copper in the furnace is 300kg when it is full. After the copper temperature in the melting furnace reaches 1300°C, add additives gradually with a feeder. Add La and Ce in one furnace, a total of 0.18kg, and Mn0.036kg. Lithium is added as a Li-Cu master alloy, and the proportion of lithium in the Li-Cu master alloy is 9.5w%, add 0.45kg of lithium in one furnace. At the same time, use electromagnetic rods to continuously electromagnetically stir for 25 minutes, and then use six lead rods in the holding furnace to start using crystallizer lead rods according to the procedure. Add copper and additives. Copper, La and Ce, Mn, and Li-Cu master alloy are added sequentially, and the speed is kept uniform...

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Abstract

The invention discloses a rare earth oxygen-free copper based alloy and a production process thereof. The rare earth oxygen-free copper based alloy is prepared by adding rare earth elements RE, Mn and lithium into copper, wherein the rare earth element RE is at least one of La and Ce; the total addition amount of RE is 0.04-0.08w%; the addition amount of Mn is 0.01-0.02w%; as lithium is an active metal element, the lithium added into the copper is added as a Li-Cu intermediate alloy; and the addition amount of the lithium is 0.05-0.15w%. The production process comprises production steps of washing electrolytic copper, shearing, melting, keeping the temperature and stirring, wherein an additive is added when the temperature of a molten copper liquid is 1260-1350 DEG C in the steps of melting and temperature keeping; the molten copper liquid is covered with a layer of ash wood and is mechanically stirred by using a green tree branch or electromagnetically stirred by using an electromagnetic bar, thereby uniformly mixing the molten liquid; and the mixing and stirring time is 20-30 minutes. The rare earth oxygen-free copper based alloy disclosed by the invention has the characteristics of high antioxidation, high strength and high conductivity at a low temperature.

Description

technical field [0001] The invention relates to a rare-earth oxygen-free copper-based alloy and a production process thereof, in particular to a rare-earth oxygen-free copper-based alloy used in motors, electrical appliances and power distribution equipment and a production process thereof. Background technique [0002] Copper has excellent properties such as good electrical conductivity, thermal conductivity, corrosion resistance, and weldability. It is a widely used metal material and one of the main materials for conductive materials. my country's copper metallurgical industry and copper processing industry wire and cable conductive materials mainly use industrial pure copper (copper) T 1 , T 2 , they all contain more impurities (see the table below). [0003] [0004] Impurities in copper will affect the conductivity. Oxygen (200ppm) and sulfur in copper form brittle phase oxides Cu2O and Cu2S with copper, which not only reduces the conductivity of copper, but also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/03
Inventor 黄学志
Owner 黄学志
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