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High-strength, high-conductivity electromagnetically compatible copper alloy and its strip preparation method

A technology of copper alloy strip material and high conductivity, which is applied in the field of copper alloy materials and processes, can solve the problems of lack of elasticity and high temperature softening resistance, and achieve the reduction of grain boundary desolvation speed, strong high temperature softening resistance, and excellent elasticity Effect

Active Publication Date: 2021-07-09
JINTIAN COPPER GROUP CORP NINGBO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This copper alloy has electromagnetic wave shielding performance and high strength, high heat conductivity and heat resistance, but it does not have good elasticity and high temperature softening resistance, and further improvement is needed

Method used

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  • High-strength, high-conductivity electromagnetically compatible copper alloy and its strip preparation method
  • High-strength, high-conductivity electromagnetically compatible copper alloy and its strip preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]1) Batching and smelting: weighing according to the composition ratio of the copper alloy strip, adding Cu, Ni, and Si into the melting furnace to heat up and melt, and after the molten copper is melted, add a covering agent glass to cover. Then raise the temperature to 1400-1450°C, and slowly add pure iron sheets with a thickness of 1.5-3 mm, a width of 20-50 mm, and a length of 50-200 mm according to the alloy ratio. After all the pure iron sheets are melted in the copper liquid, raise the temperature of the copper liquid to 1520°C, add the intermediate alloy of copper niobium powder wrapped in a copper tube, and keep it warm for 20 minutes, then add the pure cobalt powder wrapped in a copper tube, Keep warm for 25 minutes. Then lower the temperature to 1300°C~1350°C, keep it warm for 1~2h, then use a refining degassing mixer, feed nitrogen with a pressure of 0.05~0.2Mpa, and put 0.012% powdered graphite from the powder storage tank of the refining degassing mixer Bri...

Embodiment 2

[0046] 1) Batching and smelting: weighing according to the composition ratio of the copper alloy strip, adding Cu, Ni, and Si into the melting furnace to heat up and melt, after the molten copper is melted, add a covering agent glass to cover, and then raise the temperature to 1400~1450℃, according to the alloy ratio, slowly add pure iron sheets with a thickness of 1.5~3mm, a width of 20~50mm, and a length of 50~200mm. After all the pure iron sheets are melted in the copper liquid, raise the temperature of the copper liquid to 1550°C, add the copper-niobium powder intermediate alloy wrapped in a copper tube, and keep it warm for 20 minutes, then add the pure cobalt powder wrapped in a copper tube, Keep warm for 30 minutes, then lower the temperature to 1300°C~1350°C, keep warm for 1~2h, then use a refining degassing mixer, feed nitrogen with a pressure of 0.05~0.2Mpa, and put 0.02% powdered graphite from the refining degassing mixer The powder storage tank is brought into its ...

Embodiment 3

[0059]1) Batching and smelting: weighing according to the composition ratio of the copper alloy strip, adding Cu, Ni, and Si to the smelting furnace to heat up and melt, and after the molten copper is melted, add a covering agent glass to cover; then raise the temperature to 1400~1450℃, according to the alloy ratio, slowly add pure iron sheets with a thickness of 1.5~3mm, a width of 20~50mm, and a length of 50~200mm. After all the pure iron sheets are melted in the copper liquid, raise the temperature of the copper liquid to 1540°C, add the intermediate alloy of copper niobium powder wrapped in a copper tube, and keep it warm for 30 minutes, then add the pure cobalt powder wrapped in a copper tube, Keep warm for 15 minutes. Then lower the temperature to 1300°C~1350°C, keep it warm for 1~2h, then use a refining degassing mixer, feed nitrogen with a pressure of 0.05~0.2Mpa, and put 0.035% powdered graphite from the powder storage tank of the refining degassing mixer Bring it in...

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Abstract

A high-strength, high-conductivity electromagnetically compatible copper alloy and a preparation method for its strip. A high-strength, high-conductivity electromagnetic compatibility copper alloy, characterized in that: the copper alloy is composed of the following components in weight percentage: Fe: 5-6%, Ni: 0.01-2%, Si: 0.01-0.5%, Co : 0-0.1%, Nb: 0.007-0.012%, C: 0.01-0.1%, the balance copper and unavoidable trace impurities. The preparation steps are: batching, smelting: semi-continuous casting; hot rolling + online solid solution; face milling, rough rolling, trimming; step aging; cleaning, finishing rolling; finished product stress relief annealing; cleaning, finished product slitting, packaging . The preparation process of the present invention is reasonable, the formula is scientific and reasonable, and the prepared copper alloy has good processing performance and casting performance. At the same time, the alloy has the characteristics of high strength, good electrical conductivity, excellent elasticity, and strong resistance to high temperature softening. It can meet the requirements of electronic information, aerospace, etc. Aviation, transportation and other fields of demand, has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of copper alloy materials and processes, and in particular relates to a preparation method of a high-strength, high-conductivity electromagnetically compatible copper alloy and its strip. Background technique [0002] Copper alloy is an alloy composed of pure copper as the base and adding one or several other elements. The high-strength and high-conductivity copper alloy material is a kind of structural functional material with excellent comprehensive physical and mechanical properties. It has good mechanical and physical properties and is widely used in electric power, electronics, machinery and other industrial fields. At present, there are many studies on high-strength and high-conductivity copper alloy materials, but there are few studies on high-strength and high-conductivity EMC copper alloys. Compared with ordinary copper alloys, high-strength and high-conductivity EMC copper alloys have high anti-mag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00B22D11/111C22C1/02B21C37/04C22F1/08
CPCB21C37/04B22D11/111C22C1/02C22C9/00C22F1/08
Inventor 曾力维王永如李正傅新欣巢国辉
Owner JINTIAN COPPER GROUP CORP NINGBO
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