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A kind of lanthanum-carbon-magnesium composite material, tellurium-copper alloy material and preparation method thereof

A technology of alloy materials and composite materials, which is applied in the field of alloy material preparation, can solve the problems of high cost of intermediate alloys, uncontrollable oxygen content, and reduced conductivity and oxygen content of tellurium copper, so as to improve electrical conductivity, reduce impurity content, and ensure The effect of mechanical strength

Active Publication Date: 2022-03-08
四川科派新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of phosphorus will seriously reduce the conductivity and oxygen content of tellurium copper, so that the conductivity of the produced tellurium copper is between 85% and 90%, and the oxygen content cannot be controlled below 10ppm
In the prior art, lithium is also used to replace phosphorus. Although the conductivity of the produced tellurium copper can be improved to a certain extent, it can only be increased to 95% at most, and it is difficult to achieve a breakthrough improvement, and the oxygen content cannot be controlled below 10ppm; Moreover, the addition of lithium is relatively difficult, and the cost of preparing copper-lithium master alloys is also very high, making it impossible to form mass production

Method used

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  • A kind of lanthanum-carbon-magnesium composite material, tellurium-copper alloy material and preparation method thereof

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preparation example Construction

[0024] A method for preparing a tellurium-copper alloy material, comprising the following steps:

[0025] S1. Melting: Add grade A cathode copper into the semi-continuous casting furnace, heat up and melt under the protection of covering agent;

[0026] S2. After the cathode copper is completely melted, heat up to 1000-1200°C, add the lanthanum-carbon-magnesium composite material into the copper melt, and stir slowly for 1 minute;

[0027] S3. After standing for 15 minutes in heat preservation, add high-purity tellurium, and slowly stir for 1 minute;

[0028] S4. After raising the temperature to 1000-1200°C, add the lanthanum-carbon-magnesium composite material again, stir slowly for 30 seconds, keep it warm for 20 minutes, and then start casting;

[0029] S5. Bar billet extrusion: The obtained copper alloy is hot-extruded with power frequency, and the extruded billet is water-cooled to improve the ability of the liquid metal to adapt to supercooling, so that the crystallizat...

Embodiment 1

[0044] A lanthanum-carbon-magnesium composite material includes 20% lanthanum, 60% carbon and 20% magnesium in parts by weight.

[0045] A method for preparing a tellurium-copper alloy material, comprising the following steps:

[0046] S1. Melting: Add grade A cathode copper into the semi-continuous casting furnace, heat up and melt under the protection of charcoal covering agent;

[0047] S2. After the cathode copper is completely melted, heat up to 1000° C., put the lanthanum-carbon-magnesium composite material into the graphite bell jar by 0.03% by weight, then add it to the copper melt, and stir slowly for 1 minute;

[0048] S3. After standing for 15 minutes with heat preservation, 0.4% by weight of high-purity tellurium was added and stirred slowly for 1 minute.

[0049] S4. After heating up to 1100°C, add 0.01% by weight lanthanum-carbon-magnesium composite material again, stir slowly for 30 seconds, keep warm for 20 minutes, and start casting.

[0050] S5. Bar billet ...

Embodiment 2

[0053] A lanthanum-carbon-magnesium composite material comprises 25% lanthanum, 50% carbon and 25% magnesium in parts by weight.

[0054] A method for preparing a tellurium-copper alloy material, comprising the following steps:

[0055] S1. Melting: Add grade A cathode copper into the semi-continuous casting furnace, heat up and melt under the protection of charcoal covering agent;

[0056] S2. After the cathode copper is completely melted, heat up to 1100° C., put the lanthanum-carbon-magnesium composite material into the graphite bell jar by 0.04% by weight, then add it to the copper melt, and stir slowly for 1 minute;

[0057] S3. After standing for 15 minutes with heat preservation, 0.5% by weight of high-purity tellurium was added, and stirred slowly for 1 minute.

[0058] S4. After heating up to 1200° C., add 0.02% by weight lanthanum-carbon-magnesium composite material again, stir slowly for 30 seconds, keep warm for 20 minutes, and start casting.

[0059] S5. Bar bil...

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Abstract

The invention relates to the field of alloy material preparation, and discloses a lanthanum-carbon-magnesium composite material, which comprises 20-30% of lanthanum, 40-60% of carbon and 20-30% of magnesium in parts by weight; and a A preparation method for a tellurium-copper alloy material, comprising the following steps: copper smelting, adding lanthanum-carbon-magnesium composite material for deoxidation and impurity removal, adding high-purity tellurium, adding lanthanum-carbon-magnesium composite material for deoxidation and impurity removal, extrusion, and cold working ; And the tellurium-copper alloy material obtained by the above-mentioned preparation method. The electrical conductivity of the tellurium-copper alloy material obtained by the preparation method of the present invention can reach more than 97%, and the oxygen content can be controlled below 10ppm, which can improve the electrical conductivity of the tellurium-copper alloy material and ensure the mechanical strength of the obtained alloy material well. Realize the extension of its application.

Description

technical field [0001] The invention relates to the field of alloy material preparation, in particular to a lanthanum-carbon-magnesium composite material, a tellurium-copper alloy material and a preparation method thereof. Background technique [0002] Tellurium copper refers to the alloy of tellurium and copper. Tellurium copper containing 0.4-0.7% tellurium has good cutting performance; copper telluride containing 50% tellurium and 50% copper is used as an intermediate alloy. Tellurium copper is a kind of tellurium bronze material, American ASTM standard grade C14500, is a high-conductivity free-cutting copper alloy material successfully developed by the United States in the 1960s according to its industrial development requirements, to fill the blank of copper alloy precision machining materials . Tellurium-copper alloy materials take into account good cutting performance and excellent electrical and thermal conductivity, and at the same time have corrosion resistance an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C1/02C22C9/00
CPCC22C1/06C22C1/02C22C9/00
Inventor 雷洋
Owner 四川科派新材料有限公司