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

A technology of copper-based alloy and high conductivity, which is applied in the field of high-strength and high-conductivity copper-based alloy and its preparation, can solve the problems of limited application fields, inability to balance strength and conductivity, etc., to reduce reverse segregation, suppress discontinuous precipitation, The effect of delayed decomposition

Inactive Publication Date: 2013-08-14
CNMC NINGXIA ORIENT GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these materials cannot balance strength and conductivity, which limits their respective application fields.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. According to the proportioning method, 3937.5 kg of standard cathode copper (according to the new national standard GB / T467-1997 cathode copper), 45.5 kg of CuFe10 copper-iron master alloy, 12.2 kg of CuP12 copper-phosphorus master alloy, 0.6 kg of Ni9950 electrolytic nickel, 2.72 kg H62 brass and 1.04 kg of Sn99.95A pure tin are prepared and put into a melting furnace for melting. The melting temperature is 1280±10°C and the holding time is 20 minutes.

[0017] 2. The heat-preserved copper liquid is semi-continuously cast by hydraulic pressure, poured into buried pipes, and cast into a slab ingot of 210×430×4500mm. During casting, the temperature is controlled at 1280±40°C, the casting speed is 60mm / min, and the cooling water flow rate is 12m 3 / h.

[0018] 3. Put the cast ingot into a walking heating furnace for heating at a temperature of 880±10°C and a holding time of 8 hours. Then it is hot rolled out of the furnace to a thickness of 15 mm, and then quenched on...

Embodiment 2

[0024] 1. According to the proportioning method, mix 3899.7 kg of standard cathode copper, 87.3 kg of CuFe5 copper-iron master alloy, 8.3 kg of CuP14 copper-phosphorus master alloy, 0.6 kg of Ni9990 electrolytic nickel, 3.1 kg of H62 brass, and 1.0 kg of Sn99.95AA pure tin OK, put it into a melting furnace for melting, the melting temperature is 1280±10°C, and the holding time is 20 minutes.

[0025] 2. The heat-preserved copper liquid is semi-continuously cast by hydraulic pressure, buried pipe pouring, and cast into a slab ingot of 210×430×4500mm. The temperature is controlled at 1280±40°C during casting, and the casting speed is 60mm / min.

[0026] 3. Put the cast ingot into a walking heating furnace for heating at a temperature of 880±10°C and a holding time of 8 hours. Then it is hot rolled out of the furnace to a thickness of 15 mm, and then quenched on-line.

[0027] 4. Mill the oxide layer on the surface of the material on the strip milling machine, roll it to a thickn...

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Abstract

The invention relates to a high-strength high-conductivity copper base alloy and a preparation method thereof. The copper base alloy is characterized by consisting of the following components in percentage by weight: 0.05-0.15% of Fe, 0.015-0.06% of P, 0.008-0.045% of Zn, 0.005-0.05% of Sn, 0.005-0.04% of Ni, no more than 0.2% of impurity element in total and the balance of Cu. The copper base alloy provided by the invention has high strength and high conductivity as well as high strength and electric conductivity. After being smelted, the elements form a complicated order composite structure in a copper base, and the hardness and conductivity of the C19210 alloy is greatly improved after an aging process.

Description

technical field [0001] The invention relates to a high-strength and high-conductivity copper-based alloy and a preparation method thereof. Background technique [0002] At present, copper-based lead frame materials mainly adopt the principle of complex alloying to improve the strength and comprehensive performance of the alloy under the premise of sacrificing electrical conductivity. At present, there are more than 100 kinds of copper alloys for lead frames developed at home and abroad, which can be basically divided into high-conductivity type, medium-conductivity medium-strength type, low-conductivity medium-strength type and high-strength type according to the performance of the material. At present, only three kinds of C19210, C1220 and Cl9400 are widely used. Among them, Cu-Fe-P system C19210 (Cu-0.1Fe-0.03P) is one of the most representative high-conductivity materials, with a conductivity of about 85%IACS, a strength of about 400MPa, and a hardness of about HV120. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/04C22C9/02C22C1/02C22C9/00
Inventor 吴文博岳丽娟潘建立康亮
Owner CNMC NINGXIA ORIENT GRP
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