Tellurium-beryllium-copper alloy for manufacturing rods and wires as well as preparation method of tellurium-beryllium-copper alloy

A beryllium-copper alloy, rod and wire technology, which is applied in the field of metal material processing technology, can solve the problems of reducing the plasticity of copper alloys, corrosion cracking, and easy cracking, so as to avoid harm to the environment, improve corrosion resistance, and improve turning performance Effect

Inactive Publication Date: 2020-11-24
KINKOU SUZHOU COPPER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3. While meeting the turning requirements, the inherent mechanical properties of the material itself cannot be changed
[0008] 1. Lead-containing copper alloys will cause environmental pollution during production and use. Under the action of impurities in drinking water and organic acids, the lead in the alloy will slowly precipitate, endangering human health. This limits the use of lead-containing beryllium copper alloys. Used in home appliances, children's toys, electronic components, automobiles and other spare parts
For example, the European Union is gradually restricting the use of lead in copper alloys, but at present there is no beryllium-copper alloy of a kind of lead-free excellent turning performance to replace the market demand of lead-containing beryllium-copper alloys (the present invention solves this problem);
[0009] 2. Lead neither dissolves in copper nor fo

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]Step 1. Dosing according to the following weight percentages: 1.85wt.% of beryllium, 0.4wt.% of tellurium, 0.02wt.% of boron, cobalt, nickel, sulfur, bismuth, silicon, and rare earths based on lanthanum, cerium, and praseodymium The sum of the weight of impurity elements such as elements is ≤0.4wt.%, and the balance of copper, the feeding order is cathode copper CATH-1, copper-beryllium master alloy (containing beryllium 4wt.%), pure tellurium, copper-boron master alloy (containing boron 10wt.%), copper-nickel master alloy (containing nickel 10wt.%), copper-cobalt master alloy (containing 10wt.% cobalt), using 750Kg power frequency cored furnace non-vacuum induction furnace for melting, melting temperature is 1100 ℃, melting After that, keep it warm for 10 minutes, pass in argon gas to remove impurities and gases, after degassing and removing impurities, let it stand for 5 minutes and then horizontal continuous casting temperature 1100 ° C, argon protection, horizontal co...

Embodiment 2

[0049] Step 1. Dosing according to the following weight percentages: 2wt.% of beryllium, 0.35wt.% of tellurium, 0.03 wt.% of boron, cobalt, nickel, sulfur, bismuth, silicon, rare earth elements and other impurity elements. The weight sum is 3wt.% , and the remaining copper, the feeding order is cathode copper CATH-1, copper-beryllium master alloy (containing beryllium 6wt.%), pure tellurium, copper-boron master alloy (containing boron 10wt.%), copper-nickel master alloy (containing nickel 10wt.%), copper-cobalt master alloy (containing 10wt.% cobalt), using a vacuum induction furnace for melting, the melting temperature is 1200 ℃, after melting, heat preservation for 2min, pass in argon gas to remove impurities and gases, after degassing and degassing After miscellaneous, after standing still for 5 minutes, the horizontal continuous casting temperature is 1100°C, protected by argon, the horizontal continuous casting speed is 150mm / min, the cooling water pressure is 0.3MPa, and ...

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Abstract

The invention discloses a tellurium-beryllium-copper alloy for manufacturing rods and wires as well as a preparation method of the tellurium-beryllium-copper alloy. The tellurium-beryllium-copper alloy comprises beryllium, tellurium, cobalt, nickel, boron, copper and rare earth elements mainly comprising lanthanum, cerium and praseodymium. The preparation method comprises the specific steps that burdening, feeding and smelting are carried out according to the weight percentage, a horizontal continuous casting coil is continuously extruded through a continuous extruder to obtain a hot working plastic deformation metallographic structure, then solid solution, drawing and aging heat treatment processes are sequentially carried out, and the tellurium-beryllium-copper alloy rods and wires are obtained through machining. The boron element added into the alloy has a strong deoxidizing effect and a grain refining effect, and after rods and wires are subjected to a hot extrusion process throughthe continuous extruder, the wires are dynamically recrystallized, so that the tellurium element is not only distributed on the original grain boundary, but also enters the grains from the grain boundary, and the dispersity is further crushed, so that the dispersion distribution is better, and the turning performance is improved to 70%-80% from the original 62%-76%.

Description

technical field [0001] The invention relates to the field of metal material processing technology, in particular to a beryllium tellurium copper alloy for manufacturing rods and wires and a preparation method thereof. Background technique [0002] Beryllium copper is a copper-based alloy material with beryllium as the basic alloying element, which belongs to the copper-based alloy strengthened by aging precipitation. After solid solution and aging heat treatment, the material has high strength, hardness and elastic limit, small elastic hysteresis, good stability, fatigue resistance, corrosion resistance, wear resistance, low temperature resistance, non-magnetic, high electrical and thermal conductivity, With a series of excellent comprehensive properties such as no sparks when impacted, it is known as the "king of colored elastic materials" and is widely used in electronics, electrical, communication, instruments, meters, telecommunications, light industry, machinery, chemic...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/03C22F1/08
CPCC22C1/03C22C9/00C22F1/08
Inventor 韩坦
Owner KINKOU SUZHOU COPPER IND CO LTD
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