High-strength high-thermal conductivity copper alloy and preparation method thereof

A copper alloy, high thermal conductivity technology, applied in the field of alloy materials, can solve problems such as high price, increased material cost, and physical hazards, achieve good thermal conductivity and thermal fatigue resistance, increase casting and rolling speed, and reduce thermal resistance.

Inactive Publication Date: 2018-03-06
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the precious metal beryllium is not only expensive, but also toxic. The high content of beryllium in the alloy will not only increase the cost of materials, but also cause harm to people's health

Method used

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  • High-strength high-thermal conductivity copper alloy and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The copper alloy prepared in this embodiment is composed of the following components in terms of mass percentage: Ni: 3.5%; Co: 2.5%; Si: 1.0%; Be: 0.5%, and the balance is Cu and unavoidable impurities. The copper alloy method that present embodiment prepares is as follows:

[0019] (1) Melting, according to the mass ratio of the above components, place the simple substances of each component in a vacuum induction melting furnace for melting, and melt at a temperature of 1250° C. for 40 to 60 minutes.

[0020] (2) Casting: Pour the smelted molten metal into the rotating mold, fill the mold under the action of centrifugal force and solidify and form, the rotation speed is: stepless speed change 100-300r / min.

[0021] (3) Forging, the billet is hot forged, then cooled to room temperature, the initial forging temperature is 900°C, and the final forging temperature is 800°C.

[0022] (4) Heat treatment, heat treatment includes solid solution + aging, heat the forging afte...

Embodiment 2

[0025] The copper alloy prepared in this embodiment is composed of the following components in terms of mass percentage: Ni: 3.6%; Co: 2.4%; Si: 1.2%; Be: 0.6%, and the balance is Cu and unavoidable impurities. The method for preparing the copper alloy in this embodiment is the same as that in Example 1, wherein the solution treatment temperature is 870°C, the degree of primary aging treatment is 260°C, and the degree of secondary aging treatment is 460°C. The performance parameters of the copper alloy material prepared in this embodiment are shown in Table 1.

Embodiment 3

[0027] The copper alloy prepared in this embodiment is composed of the following components in terms of mass percentage: Ni: 3.7%; Co: 2.3%; Si: 1.4%; Be: 0.7%, and the balance is Cu and unavoidable impurities. The copper alloy prepared in this embodiment is the same as in Example 1, wherein the solution treatment temperature is 880°C, the degree of primary aging treatment is 270°C, and the degree of secondary aging treatment is 470°C. The performance parameters of the copper alloy material prepared in this embodiment are shown in Table 1.

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Abstract

The invention discloses a high-strength high-thermal conductivity copper alloy and a preparation method thereof. The copper alloy disclosed by the invention is composed of the following components inpercentage by mass: 3.5-4.0% of Ni, 2.0-2.5% of Co, 1.0-2.0% of Si, 0.5-1.0% of Be and the balance of Cu and inevitable impurities. According to the copper alloy disclosed by the invention, due to anappropriate preparation process, heat resistance in each heat-conducting link is reduced, the advantages of various elements are fully achieved, and the prepared material has high strength, excellentheat-conducting property and thermal fatigue resistance under the condition that the beryllium content is low. The excellent overall performance can meet the practical requirement of a cast roll shellmaterial.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a high-strength and high-thermal conductivity copper alloy and a preparation method thereof. Background technique [0002] my country is a big country in the manufacture and consumption of aluminum alloy products, and continuous casting and rolling technology is the main production technology for preparing aluminum strip blanks. Casting rolls with excellent performance are the technical guarantee for the continuous casting and rolling of aluminum strip blanks. During the casting process, the casting rolls play the dual role of crystallizer and hot rolling. Therefore, the casting roll sleeve material is not only required to have high strength and hardness. Good thermal conductivity and thermal fatigue resistance are also required. However, most of the casting rolls used in the current continuous casting and rolling technology are internal water-cooled steel rolls, which h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C1/02C22F1/08
CPCC22C9/06C22C1/02C22F1/08
Inventor 李海涛闫焉服王广欣邓宏权王要利陈新芳李中兴杨鹏涛逯峙
Owner HENAN UNIV OF SCI & TECH
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