Short-process production method for high-strength and high-conductivity copper alloy strips

A technology of copper alloy strip material and production method, which is applied in the direction of metal rolling, etc., can solve the problems of low yield, high energy consumption, and high cost, and achieve the effects of high yield, low energy consumption, and low production cost

Active Publication Date: 2018-02-23
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of large investment, long flow process, low yield and high cost in the traditional production process of copper alloy strip, and adopts the horizontal continuous casting process of hot and cold combined mold to produce large and wide copper alloy (such as Cu-Ni-Si series, Cu-Cr-Zr series, etc.) slabs, and then carry out cold rolling—solution—cold rolling—aging to realize short-process production of large coil weight, high precision, high-performance copper alloy strips, and solve the problem of traditional copper alloy strips The production process has problems such as large investment, long process, high energy consumption, low yield and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: the Cu-Ni-Si alloy strip production method of width 500mm, thickness 0.2mm

[0017] (1) Taking the C70250 alloy in the Cu-Ni-Si alloy as an example, a C70250 alloy slab with a width of 505 mm and a thickness of 15 mm was prepared by a hot-cold combined mold horizontal continuous casting process. The melting temperature of the copper liquid was 1230 ° C. The temperature of the mold (mold heating section) is 1160°C, the primary cooling water flow rate is 5000L / h, the secondary cooling water flow rate of spray water is 1000L / h, and the traction speed is 100mm / min.

[0018] (2) The slab prepared in step (1) is subjected to 6 passes of cold rolling, the average pass deformation is 35%, the rolling speed is 100m / min, and a C70250 alloy strip with a thickness of 2mm is produced. Carry out solid solution and quenching treatment to the billet, the solution temperature is 900°C, the holding time is 1h, and the protective gas is 70%H 2 +30%N 2 , Quenching adopts wa...

Embodiment 2

[0021] Embodiment 2: Cu-Ni-Si alloy strip production method with width 400mm and thickness 0.2mm

[0022] (1) Taking the C70350 alloy in the Cu-Ni-Si alloy as an example, a C70350 alloy slab with a width of 405 mm and a thickness of 10 mm was prepared by a hot-cold combined mold horizontal continuous casting process. The melting temperature of the copper liquid was 1250 ° C. The temperature of the mold (mold heating section) is 1200°C, the primary cooling water flow rate is 3000L / h, the secondary cooling water flow rate of spray water is 800L / h, and the traction speed is 80mm / min.

[0023] (2) The slab prepared in step (1) is subjected to 6 passes of cold rolling, the average pass deformation is 30%, the rolling speed is 100m / min, and a C70350 alloy strip with a thickness of 2mm is produced. Carry out solid solution and quenching treatment to the billet, the solution temperature is 950°C, the holding time is 1.5h, and the protective gas is 70%H 2 +30%N 2 , Quenching adopts w...

Embodiment 3

[0026] Embodiment 3: Cu-Cr-Zr alloy strip production method with width 400mm and thickness 0.2mm

[0027] (1) Taking the C18150 alloy in the Cu-Cr-Zr alloy as an example, a C18150 alloy slab with a width of 405 mm and a thickness of 15 mm was prepared by a hot-cold combined mold horizontal continuous casting process. The melting temperature of the copper liquid was 1250 ° C. The temperature of the mold (mold heating section) is 1180°C, the primary cooling water flow rate is 4000L / h, the secondary cooling water flow rate of spray water is 800L / h, and the traction speed is 100mm / min.

[0028] (2) The slab prepared in step (1) is subjected to 6 passes of cold rolling, the average pass deformation is 35%, and the rolling speed is 100m / min to produce a C18150 alloy strip with a thickness of 2mm. Carry out solid solution and quenching treatment to the billet, the solution temperature is 960°C, the holding time is 2h, and the protective gas is 70%H 2 +30%N 2 , Quenching adopts wate...

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Abstract

The invention discloses a short-process production method for high-strength and high-conductivity copper alloy strips, and belongs to the technical field of metal materials. In order to solve the problem that large hot rolling equipment is needed when a traditional 'semi-continuous ingot casting-hot rolling-face milling-cold rolling-solid dissolving-cold rolling-aging' process is adopted for producing high-strength and high-conductivity copper alloy strips, meanwhile, the yield is low, energy consumption is large and the cost is high, hot-cold combined casting type horizontal continues castingis adopted for preparing copper alloy plate blanks, then the cold-rolling-solid dissolving-cold rolling-aging process is carried out, the high-strength and high-conductivity copper alloy strips are produced, blank reheating, hot rolling and face milling treatment can be omitted, and the method has the advantages that equipment investment is low, the technological process is short, the yield is high, energy consumption is low, and the production cost is low. The horizontal continuous casting plate blanks are 200-800 mm wide and 5-50 mm thick, the rolling pass deformation is 20-50%, the rollingspeed is 60-600 m/min, and the processed product is 200-800 mm wide and 0.05-2 mm thick.

Description

technical field [0001] The invention belongs to the technical field of metal materials and relates to a short-process production method of high-strength and high-conductivity copper alloy strips. Background technique [0002] High-strength and high-conductivity copper alloy has high strength and excellent electrical and thermal conductivity. It is a key structural and functional material in high-tech fields such as electronic communications, transportation, aviation, aerospace, and new energy. Its strip products are used in the manufacture of integrated circuit lead frames. , Precision electronic components, connectors, etc. are widely used. For example, Cu-Ni-Si and Cu-Cr-Zr alloys have become a new generation of lead frame materials that countries are competing to develop. [0003] At present, the high-strength and high-conductivity copper alloy strips represented by Cu-Ni-Si series and Cu-Cr-Zr series basically adopt the traditional "semi-continuous ingot casting-hot roll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/16C22F1/02C22F1/08B21B1/28
Inventor 谢建新姜雁斌刘新华刘琪
Owner UNIV OF SCI & TECH BEIJING
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