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High-strength and high-conductivity RE-Cu alloy and its production process

A manufacturing method and technology of rare earth copper, applied in the field of copper-based alloys and its manufacturing, can solve unrelated problems, and achieve the effect of low raw material cost and simple preparation method

Inactive Publication Date: 2003-05-14
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, the above-mentioned domestic and foreign patents do not involve or describe in detail the high-strength and high-conductivity rare earth copper alloy and its manufacturing method proposed by this patent

Method used

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  • High-strength and high-conductivity RE-Cu alloy and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] CuCrZrZnLa alloy is smelted with the following raw materials: electrolytic copper, copper-10% chromium master alloy, copper-10% zirconium master alloy, copper-5% lanthanum master alloy, copper-30% zinc master alloy. The composition of the alloy is shown in Example 1 of Table 1.

[0023] 1. Melting: Melting with melting equipment used in the industry. The order of alloy addition is: first add electrolytic copper, copper-chromium master alloy, smelt for 20 minutes after melting, add copper-lanthanum master alloy for 3 minutes, and finally add copper-zinc master alloy and copper-zirconium master alloy for 3 minutes, then Cast it.

[0024] 2. Hot rolling: After the ingot is peeled, it is heated to 900°C, kept for 2 hours, and subjected to 70% deformation treatment.

[0025] 3. Solution treatment: Heat the deformed alloy to 970°C, keep it for 30 minutes, and quench it into water;

[0026] 4. Cold rolling: the alloy is deformed by 85%;

[0027] 5. Aging treatment: keep the alloy ...

Embodiment 2

[0031] CuCrZrZnLaFeTi alloy is smelted with the following raw materials: electrolytic copper, copper-10% chromium master alloy, copper-10% zirconium master alloy, copper-5% lanthanum master alloy, copper-30% zinc master alloy, pure iron, pure titanium. The composition of the alloy is shown in Example 2 of Table 1.

[0032] 1. Melting: Melting with melting equipment used in the industry. The order of alloy addition is: first add electrolytic copper, copper-chromium master alloy, pure iron, pure titanium, smelt for 30 minutes after melting, add copper-lanthanum master alloy for 3 minutes, and finally add copper-zinc master alloy and copper-zirconium intermediate The alloy is smelted for 2 minutes and then cast;

[0033] 2. Hot rolling: After the ingot is peeled, it is heated to 880°C, kept for 3 hours, and subjected to 70% deformation treatment;

[0034] 3. Solution treatment: the alloy is heated to 1000°C for 20 minutes, quenched into water and other fast coolants;

[0035] 4. Cold...

Embodiment 3

[0040] CuCrZrZnCeCoTi uses the following melting alloys: electrolytic copper, copper-10% chromium master alloy, copper-10% zirconium master alloy, copper-5% cerium master alloy, copper-30% zinc master alloy, pure cobalt, and pure titanium. The composition of the alloy is shown in Example 3 of Table 1.

[0041] 1. Melting: Melting with melting equipment used in the industry. The order of alloy addition is: first add electrolytic copper, copper-chromium master alloy, pure cobalt, pure titanium, smelt for 30 minutes after melting, add copper-lanthanum master alloy for 3 minutes, and finally add copper-zinc master alloy and copper-zirconium intermediate The alloy is smelted for 1 minute and then cast;

[0042] 2. Hot rolling: After the ingot is peeled, it is heated to 880°C, kept for 2 hours, and deformed by 70%;

[0043] 3. Solution treatment: The alloy is heated to 960°C for 30 minutes, and then quenched into water and other fast coolants;

[0044] 4. Cold rolling: the alloy is defo...

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Abstract

The present invention relates to the copper alloy material for lead frame, electrode alloy, microelectronic packing, etc and its production technology. On the basis of traditional CuCrZr alloy, traceelements La and Zn, Fe and Ti are added and the alloy is produced through hot rolling, solid solution treament, cold rolling, ageing and other technological steps. The alloy has balanced comprehensive performance and obviously raised conductivity, tensile strength and hardness compared with traditional CuCrZr alloy. It has relatively simple production process and low material cost.

Description

Technical field [0001] The invention relates to a copper-based alloy and its manufacturing technology, in particular to a copper alloy for high-strength and high-conductivity such as lead frames, electrode alloys and connectors, and a manufacturing method thereof. Background technique [0002] Due to its good electrical and thermal conductivity, corrosion resistance, strength, fatigue performance, and ease of manufacture, copper and its alloys have been widely used in the fields of electronics, electricity, machinery, and aerospace, becoming important electronic metal materials. Among them, Cu-Cr-Zr series alloys are a kind of widely used high-strength and high-conductivity alloys, whose main feature is high electrical conductivity. But its strength is low. In order to further meet the various performance requirements of electronic components such as lead frames, such as strength, electrical conductivity, welding, etching, etc., it is necessary to further improve the performance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C9/04
Inventor 马莒生黄福祥宋厚启钟卫佳熊晓明郭淑梅娄花芬
Owner TSINGHUA UNIV
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