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Copper alloy for high-strength and high-conductivity lead and preparation method of copper alloy

A technology of copper alloy and copper-lead alloy, which is applied in the field of copper alloy for high-strength and high-conductivity wire and its preparation, can solve the problems of insufficient strength, difficulty in matching high strength and high conductivity, etc., and achieve low cost and good die-casting process The effect of performance and elongation improvement

Active Publication Date: 2015-02-04
SHENZHEN SHENZHOU CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent application with the application number 03135189.1 discloses a non-silver-containing rare earth copper-tellurium high-conductivity alloy material. Its disadvantage is that it is difficult to achieve high strength and high conductivity matching, especially when the conductivity reaches 94.5% IACS, the strength is obvious. Insufficient, only about 330MPa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Weigh 0.05% lead, 0.7% iron, 0.04% magnesium, 0.4% chromium and 0.55% zirconium according to weight percentage, and the rest is copper.

[0027] The components are mixed and smelted at 1200-1350°C, poured into the ladle after melting, and then poured into the crystallization wheel from the ladle to form a slab, and the slab is hot forged at a temperature of 800-950°C for 12 One pass of hot rolling with a reduction rate of 75% to obtain hot-rolled materials; the hot-rolled materials are subjected to solution treatment at a temperature of 850-950°C and the holding time is 1-2 hours, and then quenched in water to obtain cold materials ; Then carry out 20-40% cold rolling treatment on the cold material, and finally carry out pickling to remove oxides on the surface. That is, the copper alloy material for the wire was obtained, the electrical conductivity reached 91% IACS, the elongation was 12%, and the tensile strength was 630 MPa.

Embodiment 2

[0028] Example 2: Weigh 0.05% lead, 0.7% iron, 0.04% magnesium, 0.45% chromium and 0.62% zirconium according to the weight percentage, and the rest is copper. The components are mixed and melted at 1200-1350°C, and poured into the ladle after melting , and then poured into the crystallization wheel from the ladle to form a slab, and the slab is hot-forged at a temperature of 800-950°C, and hot-rolled for 12 passes, with a reduction rate of 75%, to obtain a hot-rolled Material; solid solution treatment is carried out on the hot-rolled material, the temperature is 850-950°C, the holding time is 1-2h, and then quenched in water to obtain cold material; then the cold material is subjected to 20-40% cold rolling treatment, and finally Pickling is carried out to remove surface oxides, etc. That is to say, a copper alloy material for wire is obtained, the electrical conductivity reaches 93% IACS, the elongation is 17%, and the tensile strength is 655 MPa.

Embodiment 3

[0029] Example 3: Weigh 0.05% lead, 0.7% iron, 0.04% magnesium, 0.5% chromium and 0.70% zirconium according to the weight percentage, and the rest is copper. The components are mixed and melted at 1200-1350°C, and poured into the ladle after melting , and then poured into the crystallization wheel from the ladle to form a slab, and the slab is hot-forged at a temperature of 800-950°C, and hot-rolled for 12 passes, with a reduction rate of 75%, to obtain a hot-rolled Material; solid solution treatment is carried out on the hot-rolled material, the temperature is 850-950°C, the holding time is 1-2h, and then quenched in water to obtain cold material; then the cold material is subjected to 20-40% cold rolling treatment, and finally Pickling is carried out to remove surface oxides, etc. That is to say, the copper alloy material for the wire is obtained, the electrical conductivity reaches 95% IACS, the elongation is 20%, and the tensile strength is 620 MPa.

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Abstract

The invention discloses a copper alloy for a high-strength and high-conductivity lead and a preparation method of the copper alloy, belonging to the technical field of copper alloy preparation. The copper alloy for the high-strength and high-conductivity lead is prepared from the following components in percentage by weight: 0.05% of lead, 0.7% of iron, 0.04% of magnesium, 0.4-0.5% of chromium, 0.55-0.70% of zirconium and the balance of copper. The preparation method comprises the following steps: mixing and smelting the above components in percentage by weight, casting ingots, thermal-rolling, performing solid solution, cold-rolling and pickling, thereby obtaining the copper alloy. The conductivity of the copper alloy is 91-95% IACS, the ductility of the copper alloy is 12-20%, and the tensile strength of the copper alloy is 620-655MPa. The requirements on properties of a copper alloy material for leads of the electronic industrial field can be relatively well met, and the alloy copper can be also used in the field of copper alloy materials with high requirements on conductivity and ductility and further has the advantages of simple process and low cost.

Description

technical field [0001] The invention belongs to the technical field of copper alloy preparation, and more specifically relates to a copper alloy for high-strength and high-conductivity wire and a preparation method thereof. Background technique [0002] Multi-component composite microalloying technology is a research hotspot of high-performance copper alloy materials. Copper wire alloy materials require high electrical conductivity, high strength requirements and good elongation. The Chinese patent application with the application number 02133772.1 discloses a copper alloy material for catenary wires. This copper alloy material contains tellurium, lithium and magnesium, which improves the strength of the copper alloy, but the conductivity is low, the highest is only It is 76%IACS. The Chinese patent application with the application number 02133772.1 discloses a copper alloy material for catenary wires. This copper alloy material not only contains tellurium, but also contai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22F1/08
CPCH01L2224/45147H01L2924/01012H01L2924/01024H01L2924/01026H01L2924/0104H01L2924/01082C22C9/00C22F1/08
Inventor 颜承龙
Owner SHENZHEN SHENZHOU CABLE
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