High-strength and high-conductivity CuAg alloy material and preparation method thereof

A high-strength, high-conductivity technology, applied in the direction of metal/alloy conductors, semiconductor devices, semiconductor/solid-state device components, etc.

Inactive Publication Date: 2010-02-10
KUNMING INST OF PRECIOUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the contradiction between the high strength and high electrical conductivity of the current copper-based silver-containing alloy materials, and the high strength must be obtained through large deformation

Method used

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  • High-strength and high-conductivity CuAg alloy material and preparation method thereof
  • High-strength and high-conductivity CuAg alloy material and preparation method thereof
  • High-strength and high-conductivity CuAg alloy material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0025] (1) The design of the chemical composition: copper and silver with a purity greater than 99.95% are used as raw materials, and CuAg6 is prepared by Ag 6wt% and the balance is copper.

[0026] (2) The smelting chamber and the directional solidification chamber are evacuated to a degree of 1 Pa, and then filled with argon for protection, and the air pressure is 0.04 MPa. The preheating temperature of the graphite crucible is 1100°C.

[0027] (4) Alloy melting. The alloy is melted in a vacuum induction furnace, heated and refined to make it fully alloyed, the temperature is controlled at 1200°C-1250°C, kept for 2 minutes, and poured into a graphite crucible through a funnel at a uniform speed.

[0028] (5) Pull down the graphite crucible. After all the metal is poured into the crucible, start the pull-down device to move the graphite crucible down at a constant speed, and the pull-down speed is 500 μm / S. After the temperature of the directional solidification chamber dr...

Embodiment 2

[0033] (1) Design of chemical composition: adopt copper and silver with a purity greater than 99.95% as raw materials, prepare CuAg9 by Ag 9wt%, and the balance is copper.

[0034] (2) The smelting chamber and the directional solidification chamber are evacuated to a vacuum degree of 1 Pa, and then filled with argon for protection, and the air pressure is 0.05 MPa. The preheating temperature of the graphite crucible is 1080°C.

[0035] (3) Alloy melting. The alloy is melted in a vacuum induction furnace, heated and refined to make it fully alloyed, the temperature is controlled at 1170°C-1220°C, kept for 2 minutes, and poured into a graphite crucible through a funnel at a uniform speed.

[0036] (4) Pull down the graphite crucible. After all the metal is poured into the crucible, start the pull-down device to move the graphite crucible down at a constant speed, and the pull-down speed is 300 μm / S. After the temperature of the directional solidification chamber drops below 1...

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Abstract

The invention discloses a high-strength and high-conductivity CuAg alloy material with a continuous fiber tissue and a preparation method thereof. The material consists of Cu, Ag, etc. Cu and Ag alloyingot with a columnar structure is obtained by a directional solidification technology, and continuous fibrous tissue structure is obtained by the technologies of extruding, drawing, etc. The components of the alloy material are as follows: 5-10wt% of Ag and balance of Cu. The preparation method of the CuAg alloy comprises the following steps: (1) preparing chemical composition; (2) vacuumizing asmelting room and a directional solidification room; (3) smelting the alloy; (4) directionally solidifying; (5) hot extruding; (6) hot processing; and (7) drawing wire or rolling. The material is applicable to slide contact material such as a middle-load and low-load switch, a breaker, a contactor, a micromotor slip ring, a commutating sheet, and the like, high-pulse magnetic field conductor material, an integrated circuit lead wire frame, a fish torpedo lead wire, an electric conduction reed, etc.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, in particular to a high-strength and high-conductivity copper-silver alloy material and a preparation process thereof. Background technique [0002] Copper-silver alloys are generally melted in a vacuum or protective atmosphere in a medium-frequency or high-frequency induction furnace and graphite crucible, and cast in an iron mold. The ingot is hot forged (rolled) or cold forged (rolled) after homogenization annealing, and then cold processed to the finished product size. The intermediate annealing is carried out under vacuum or protective atmosphere. Copper-silver alloys used in the electrical industry are widely used in medium-load and light-load switches, circuit breakers and contactors due to their good thermal conductivity and excellent physical and mechanical properties, and are also used as micro-motor slip rings and rectifiers other sliding contact materials. At the same time, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/02C22C1/06C22F1/08H01H1/021H01B1/02H01L23/495
Inventor 陈永泰谢明杨有才张吉明崔浩刘满门
Owner KUNMING INST OF PRECIOUS METALS
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