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High-strength and high-conductivity microalloy copper foil and its processing method

A processing method and micro-alloy technology, applied in the direction of metal rolling, etc., can solve the problems of elasticity, insufficient pressure resistance, high cost, thick copper foil and other problems

Active Publication Date: 2021-11-30
HUBEI JINGYI HIGH PRECISION COPPER PLASTICS & STRIPS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The alloying and processing methods of the above-mentioned copper alloys have problems such as high cost, low softening resistance temperature, and thick copper foil (see the table below). - The external tensile strength of Fe-P cannot be higher than 450Mpa, and the elasticity and pressure resistance are not enough to meet the needs of material thinning. There is a softening temperature lower than 420°C, which cannot meet high temperature softening resistance under the trend of material thinning.
Therefore, the use of existing copper alloys to produce 5G smart phone copper strip and foil products has the disadvantages of insufficient tensile strength, elasticity, and poor heat dissipation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Firstly, batching is carried out according to the weight percentage of Cr0.1, Sn0.0 / 9, Zn0.02, and the balance is Cu;

[0051] Then add cathode copper and covering agent to the melting furnace, heat up and melt cathode copper, after the temperature reaches 1250°C, add copper-chromium alloy, stir thoroughly after ten minutes, then add tin and stir fully, then add zinc and stir fully, finally add H65 brass Fully stir; the above-mentioned molten copper water enters the holding furnace through the connecting pipe of the connected furnace, and is drawn and cast;

[0052] The pulling stroke is 9mm, the time is 1s, the reverse thrust I is 1mm, the time is 0.4s, the pause is 2.2s, the reverse thrust II is 0.6mm, the time is 0.3s, the casting speed is 1.9mm / s, and the casting temperature is kept at 1170°C; cooling water The inlet water temperature is controlled within the range of 29-31°C, and the cooling water outlet temperature is controlled within the range of 48-50°C;

[00...

Embodiment 2

[0062] Firstly carry out batching according to the weight percentage of Cr0.15, Sn0.011, Zn0.012, and the balance is Cu;

[0063] Then add cathode copper and covering agent to the melting furnace, heat up and melt cathode copper, after the temperature reaches 1250°C, add copper-chromium alloy, stir thoroughly after ten minutes, then add tin and stir fully, then add zinc and stir fully, finally add H65 brass Fully stir; the above-mentioned molten copper water enters the holding furnace through the connecting pipe of the connected furnace, and is drawn and cast;

[0064] The pulling stroke is 6mm, the time is 0.7s, the reverse thrust I is 0.8mm, the time is 0.2s, the pause is 3s, the reverse thrust II is 0.7mm, the time is 0.4s, the casting speed is 2.0mm / s, and the casting temperature is kept at 1180°C; The cooling water inlet temperature is controlled within the range of 27-30°C, and the cooling water outlet temperature is controlled within the range of 47-49°C;

[0065] The ...

Embodiment 3

[0074] First, carry out batching according to the weight percentage of Cr0.080, Sn0.012, Zn0.01, and the balance is Cu;

[0075] Then add cathode copper and covering agent to the melting furnace, heat up and melt cathode copper, after the temperature reaches 1250°C, add copper-chromium alloy, stir thoroughly after ten minutes, then add tin and stir fully, then add zinc and stir fully, finally add H65 brass Fully stir; the above-mentioned molten copper water enters the holding furnace through the connecting pipe of the connected furnace, and is drawn and cast;

[0076] The casting lead is 8mm, the time is 0.8s, the reverse thrust I is 0.9mm, the time is 0.2s, the pause is 2.8s, the reverse thrust II is 0.5mm, the time is 0.2s, the casting speed is 2.2mm / s, and the casting temperature is kept at 1190°C; The cooling water inlet temperature is controlled within the range of 25-27°C, and the cooling water outlet temperature is controlled within the range of 42-45°C;

[0077] The s...

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Abstract

The invention relates to a high-strength and high-conductivity micro-alloy copper foil and a processing method thereof. The above-mentioned micro-alloy copper foil is Cu-Cr-Sn-Zn, and its weight percentage is: Cr0.080-0.20%, Sn0. 005‑0.015%, Zn0.008‑0.02%, and the balance is Cu. Its processing method mainly adopts the horizontal continuous casting process, and then divides the cold rolling into three times, and has an annealing process between each two cold rolling. The micro-alloy copper foil has thin thickness, improved tensile strength and softening resistance, high electrical conductivity and hardness, and the Cr alloying processing method is simple, with high strength, high thermal conductivity and shielding properties, especially suitable for 5G mobile phones The use of heat dissipation and shielding meets the requirements of its manufacturing process.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a high-strength and high-conductivity micro-alloy copper foil and a processing method thereof. Background technique [0002] Micro-alloy copper foil is a high-efficiency radiator material for manufacturing automobile water tanks. At present, there are TSn0.08-0.01 (T14405) and TSn0.12 (C14415) micro-alloy copper foil alloys for tube-type automobile water tank radiators on the market. , TSn0.1-0.3 (C14420) and TTe0.02-0.02 (C14530), the mainstream product is TSn0.08-0.01, the product is concentrated in 0.045-0.06mm, and the volume of the tube and belt radiator made of TSn0.08-0.0 Small size, light weight, large heat dissipation area, and high heat dissipation efficiency, but there are still problems such as insufficient light weight, insufficient elasticity after thinning, and insufficient softening resistance. [0003] The weight percentage of strip alloy elements Sn (0.10-0.16%), P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/00C22C9/00C22F1/08B21B1/40
CPCB21B1/40B22D11/004C22C9/00C22F1/08
Inventor 黄建斌冯立铭王金亮
Owner HUBEI JINGYI HIGH PRECISION COPPER PLASTICS & STRIPS CO LTD
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