Preparation method for Cu-Ni-Si-Ma alloy strip

A cu-ni-si-mg and alloy strip technology, which is applied in the field of non-ferrous metal strip preparation, can solve the problems of high energy consumption, high cost, and long process flow, and achieve the effects of simplified process, excellent plasticity, and cost reduction

Inactive Publication Date: 2017-09-15
GUANGDONG INST OF MATERIALS & PROCESSING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a short-process and efficient preparation method of Cu-Ni-Si-Mg alloy strips, which solves the problem of long process flow, large energy consumption and high cost of traditional Cu-Ni-Si alloy strip production methods. Advanced problems, develop a continuous casting-continuous extrusion-rolling efficient forming method for Cu-Ni-Si-Mg alloy strip

Method used

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preparation example Construction

[0021] The invention provides a method for preparing a Cu-Ni-Si-Mg alloy strip, including the following steps:

[0022] (1) Using copper source, nickel source, silicon source and magnesium source as raw materials, Cu-Ni-Si-Mg alloy rod billet is obtained by melting, continuous casting, cooling and drawing;

[0023] (2) Directly continuously extruding the Cu-Ni-Si-Mg alloy rod blank obtained in the step (1) to obtain a Cu-Ni-Si-Mg alloy strip blank;

[0024] (3) The Cu-Ni-Si-Mg alloy strip obtained in the step (2) is sequentially rolled and aging treated to obtain a Cu-Ni-Si-Mg alloy strip.

[0025] The invention uses copper source, nickel source, silicon source and magnesium source as raw materials to obtain Cu-Ni-Si-Mg alloy rod billet through successive melting, continuous casting, cooling and drawing. The present invention does not specifically limit the amount ratio of the copper source, the nickel source, the silicon source and the magnesium source and the content of the componen...

Embodiment 1

[0049] A method for preparing a Cu-Ni-Si-Mg alloy strip with a thickness of 100 μm.

[0050] The cathode copper, copper-nickel, copper-silicon and copper-magnesium intermediate alloy are used as raw materials, wherein the nickel content is 1.2wt.%, the silicon content is 0.3wt.%, the magnesium content is 0.05wt.%, and the rest is copper. First, use heating to melt the raw materials at 1350℃, and spray water near the continuous mold outlet to cool. The water temperature is 30℃, the flow rate is 200ml / min, and then the diameter is precisely continuous casting at a drawing speed of 120mm / min. Cu-Ni-Si-Mg alloy rod billet with a size of 12mm; the Cu-Ni-Si-Mg alloy rod billet is directly subjected to continuous extrusion without surface treatment to form the billet, the continuous extruder speed is 5r / min, temperature It is room temperature and the extrusion ratio is 15; then the alloy strip is rolled at room temperature for 20 passes without intermediate annealing at a reduction rate...

Embodiment 2

[0053] A method for preparing Cu-Ni-Si-Mg alloy strip with a thickness of 200 μm.

[0054] The cathode copper, copper-nickel, copper-silicon and copper-magnesium intermediate alloy are used as raw materials, wherein the nickel content is 1.2wt.%, the silicon content is 0.3wt.%, the magnesium content is 0.05wt.%, and the rest is copper. First, use heating to melt the raw materials at 1250℃, and spray water to cool near the exit of the continuous mold. The water temperature is 20℃, the flow rate is 50ml / min, and then the diameter is precisely continuous casting at a drawing speed of 10mm / min. Cu-Ni-Si-Mg alloy rod billet with a size of 10mm; the Cu-Ni-Si-Mg alloy rod billet is directly extruded without surface treatment to form the strip billet, the continuous extruder speed is 15r / min, temperature It is room temperature and the extrusion ratio is 10; then the alloy strip is rolled at room temperature for 15 passes without intermediate annealing at a reduction rate of 5-50% to a st...

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Abstract

The invention provides a preparation method for a Cu-Ni-SI-Ma alloy strip. The method comprises the following steps that a copper source, a nickel source, a silicon source and a magnesium source serve as the raw materials and are sequentially subjected to melting, continuous casting, cooling and billet drawing to obtain a Cu-Ni-SI-Ma alloy rod billet; the Cu-Ni-Si-Ma alloy rod billet is directly subjected to continuous extrusion molding to obtain a Cu-Ni-Si-Mg alloy strip billet; and then rolling and ageing treatment are sequentially conducted to obtain the Cu-Ni-Si-Mg alloy strip. Embodiments show that the elongation, under the room temperature, of the Cu-Ni-Si-Mg alloy rod billet prepared through the preparation method is greater than 45%, and excellent plasticity is achieved; and melting and continuous casting in combination of cooling enforcement measures are adopted, continuous casting and fast solidification can be achieved, the solution strengthening and precipitation strengthening effects of alloy elements are effectively improved, and the method for continuous casting, continuous extruding, rolling and efficient molding of the Cu-Ni-Si-Mg alloy strip is provided.

Description

Technical field [0001] The invention relates to the technical field of preparation of non-ferrous metal strips, in particular to a method for preparing Cu-Ni-Si-Mg alloy strips. Background technique [0002] Cu-Ni-Si alloys have excellent characteristics such as high strength, high electrical conductivity, good weldability, high temperature softening resistance and high corrosion resistance, and are widely used in electronic devices such as lead frames, terminals and connectors. In recent years, with the development of electronic information products in the direction of miniaturization, thinning, lightweight, high-speed, multi-functionality and intelligence, and the development of integrated circuits in the direction of large-scale and super-large-scale, the use of copper alloy strips is required Increasingly, for example, the thickness of lead frame copper alloy strips used in integrated circuits has now developed towards 0.1mm. This puts forward higher technical requirements f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/02
CPCB21C37/02
Inventor 甘春雷王顺成周楠郑开宏宋东福杨莉
Owner GUANGDONG INST OF MATERIALS & PROCESSING
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