CuCrZr alloy with high strength and high conductivity, and preparation and processing method thereof

A processing method and high-conductivity technology, which is applied in the fields of non-ferrous metal casting processing, friction contact materials, and alloy materials, can solve problems such as failure to achieve strength, and achieve excellent comprehensive performance, short process flow, and simple preparation process.

Inactive Publication Date: 2012-07-04
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Retrieval of relevant domestic patents, performance failed to achieve strength > 600MPa, conductivity > 80% IACS

Method used

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  • CuCrZr alloy with high strength and high conductivity, and preparation and processing method thereof
  • CuCrZr alloy with high strength and high conductivity, and preparation and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The alloy of the invention is smelted using the following raw materials: electrolytic copper, copper-chromium master alloy, copper-zirconium master alloy. The composition of the alloy is shown in Example 1 of Table 1.

[0028] 1. Melting: use non-vacuum induction furnace for melting. The order of adding the alloy is: first add Cu, after melting, add covering agent (charcoal) for 5-10 minutes, add CuCr master alloy and CuZr master alloy, after fully degassing and removing impurities, then cover the burning layer with a thickness of about 10mm. charcoal. The smelting temperature is 1250°C. After holding the heat for 10 minutes, let it stand for 5-10 minutes and then cast it out of the furnace. The casting temperature is 1200°C.

[0029] 2. Face milling: face milling of the alloy (1mm milling on the upper and lower surfaces).

[0030] 3. Hot rolling: the alloy is heated, the heating temperature is 900°C, the holding time is 1h, and the total processing rate of hot rolli...

Embodiment 2

[0038] The alloy of the present invention is smelted using the following raw materials: electrolytic copper, pure magnesium, pure silicon, copper-cerium or copper-lanthanum master alloy, copper-chromium master alloy, copper-zirconium master alloy. The composition of the alloy is shown in Example 2 of Table 1.

[0039] 1. Melting: use non-vacuum induction furnace for melting. The order of alloy addition is: first add Cu, after melting, add covering agent (charcoal) for 5-10 minutes, add CuCe or CuLa master alloy, CuCr master alloy and CuZr master alloy, pure Si, pure Mg, after fully degassing, After removing impurities, cover with burning charcoal about 10mm thick. Finally, pure magnesium is added, and the melting temperature is 1300°C. After holding the heat for 10 minutes, let it stand for 5-10 minutes and then cast it out of the furnace. The casting temperature is 1150°C.

[0040] 2. Face milling: face milling of the alloy (1mm milling on the upper and lower surfaces).

[0...

Embodiment 3

[0049] The alloy of the invention is smelted using the following raw materials: electrolytic copper, pure magnesium, pure silicon, pure silver, copper-chromium master alloy, copper-zirconium master alloy. The composition of the alloy is shown in Example 3 of Table 1.

[0050] 1. Melting: use non-vacuum induction furnace for melting. The order of adding the alloy is: first add Cu, after melting, then add Si, add covering agent (charcoal) and keep it warm for 5-10 minutes, add CuCr master alloy and CuZr master alloy, pure Si, pure Ag, after fully degassing and removing impurities Finally, cover it with burning charcoal about 10mm thick. Finally, pure magnesium is added, and the melting temperature is 1260°C. After holding the heat for 10 minutes, let it stand for 5-10 minutes and then cast it out of the furnace. The casting temperature is 1200°C.

[0051] 2. Face milling: face milling of the alloy (1mm milling on the upper and lower surfaces).

[0052] 3. Hot rolling: heating...

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Abstract

The invention relates to a CuCrZr alloy with high strength and high conductivity, and a preparation and processing method thereof. The alloy comprises the basic ingredients in percentage by mass: 0.3 percent to 1.4 percent of Cr, 0.02 percent to 0.25 percent of Zr and the balance Cu, wherein the ingredients in the CuCrZr alloy are needed to meet the following requirements: (a) Cr/Zr is less than or equal to 5 and is greater than or equal to 1.9; and (b) Cr+Zr is less than or equal to 1.5 percent and is greater than or equal to 0.4 percent. The preparation and processing method comprises the following steps of: a, compounding, feeding, smelting and casting according to mass percent; b, surface milling; c, hot rolling; d, solution treatment; e, primary cold rolling; f, primary aging; g, secondary cold rolling; and h, secondary aging. The CuCrZr alloy has the tensile strength sigma b being 600-700 MPa, the plasticity elongation rate delta being 4-10 percent, and the conductivity being greater than 80 percent of IACS (International Annealed Copper Standard), can be widely applied to occasions with high strength and high conductivity for preparing resistance welding electrodes, liners of crystallizers of continuous casting machines, integrated circuit lead frame and the like.

Description

technical field [0001] The invention relates to a high-strength and high-conductivity CuCrZr alloy and its preparation and processing method, in particular to the preparation of a copper alloy material with high strength and high electrical conductivity and the processing technology of the strip, which belongs to the technical field of alloy materials. It can be widely used in high-strength and high-conductivity fields, such as the preparation of resistance welding electrodes, continuous casting machine mold linings, integrated circuit lead frames, overhead wire bars and chuck materials for trams and electric locomotives, contact materials, and ironmaking blast furnaces. Tuyere small set and so on. [0002] The present invention relates to a metal smelting technology, in particular to a non-vacuum smelting technology for high-strength and high-conductivity CuCrZr alloy plate and strip; the present invention relates to the technical field of non-ferrous metal casting processing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/03C22F1/08
Inventor 黄国杰肖翔鹏谢水生程磊米绪军付垚熊柏青
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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