Preparation method of copper alloy powder for manufacturing of additional materials

An additive manufacturing and copper alloy technology, applied in additive processing, metal processing equipment, transportation and packaging, etc., can solve the problems of copper alloy powder sphericity, poor fluidity and purity, and achieve excellent fluidity and composition. The effect of uniform tissue and low oxygen content

Active Publication Date: 2019-01-01
SINO EURO MATERIALS TECH OF XIAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of copper alloy powder for additive manufacturing, which solves the problems of poor sphericity, fluidity and purity of copper alloy powder prepared by existing powder making technology

Method used

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  • Preparation method of copper alloy powder for manufacturing of additional materials
  • Preparation method of copper alloy powder for manufacturing of additional materials

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preparation example Construction

[0029] A kind of preparation method of copper alloy powder for additive manufacturing of the present invention is specifically implemented according to the following steps:

[0030] Step 1, according to the composition of the copper alloy, the ingredients are: Cu matrix 96-99.99wt%, adding 0-3wt% of Ag, Cr, W, Ni alloy elements, Zr 0.01-1wt%, the sum of the mass percentages of the above components is 100 %;

[0031] Step 2, placing the Cu matrix and alloy elements in step 1 in a vacuum induction melting furnace for melting, and using electromagnetic stirring, and then keeping the temperature at 1300°C-1500°C for 2min-8min to obtain a copper alloy mixture;

[0032] The melting temperature is 1000℃~1300℃, the melting time is 0.5h~10h, and the vacuum degree of the vacuum induction melting furnace is 5×10 -3 Pa~9×10 -2 Pa;

[0033] Step 3, preparing copper alloy ingot;

[0034] Specifically: put the copper alloy mixture obtained after step 2 into the crystallizer for casting, ...

Embodiment 1

[0056] A kind of preparation method of copper alloy powder for additive manufacturing of the present invention is specifically implemented according to the following steps:

[0057] Step 1, according to the ingredients of the copper alloy: Cu matrix 96wt%, adding 3wt% Ag element, Zr 1wt%, the sum of the mass percentages of the above components is 100%;

[0058] Step 2, putting the Cu matrix and the Ag element in the step 1 into a vacuum induction melting furnace for melting, and using electromagnetic stirring, and then keeping the temperature at 1300° C. for 2 minutes to obtain a copper alloy mixture;

[0059] The melting temperature is 1000°C, the melting time is 0.5h, and the vacuum degree of the vacuum induction melting furnace is 5×10 -3 Pa;

[0060] Step 3, preparing copper alloy ingot;

[0061] Specifically: the copper alloy mixture obtained after step 2 is placed in a crystallizer for casting, stirred by an electromagnetic stirrer, and cooling water is introduced into...

Embodiment 2

[0075] A kind of preparation method of copper alloy powder for additive manufacturing of the present invention is specifically implemented according to the following steps:

[0076] Step 1, according to the composition of the copper alloy as ingredients: Cu matrix 97wt%, Cr 2.5wt%, Zr0.5wt%, the sum of the mass percentages of the above components is 100%;

[0077] Step 2, placing the Cu matrix and Cr in step 1 in a vacuum induction melting furnace for melting, and using electromagnetic stirring, and then keeping the temperature at 1450° C. for 5 minutes to obtain a copper alloy mixture;

[0078] The melting temperature is 1100°C, the melting time is 1h, and the vacuum degree of the vacuum induction melting furnace is 6×10 -3 Pa;

[0079] Step 3, preparing copper alloy ingot;

[0080] Specifically: put the copper alloy mixture obtained after step 2 into the crystallizer for casting, use an electromagnetic stirrer to stir, and feed cooling water into the crystallizer, and at t...

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Abstract

The invention discloses a preparation method of a copper alloy powder for manufacturing of additional materials. The preparation method specifically comprises the following steps of firstly, accordingto components of copper alloy, smelting the materials, casting, annealing, forging, machining, and finely turning, so as to obtain a copper alloy electrode rod; loading the copper alloy electrode rodinto a reaction chamber, heating an end part of the copper alloy electrode rod by plasma, uniformly melting the end part of the copper alloy electrode rod, enabling atomized liquid droplets to be thrown out from the end part of the copper alloy electrode rod under the function of centrifugal force and form fine liquid droplets, quickly cooling the fine liquid droplets into spherical particles under an inert gas protection atmosphere, and enabling the spherical particles to fall into a collector at the bottom part of the reaction chamber; finally, screening obtained copper alloy powder under the inert gas protection environment, and packaging. The preparation method can be used for preparing the copper alloy powder with high degree of sphericity, high degree of purity, excellent fluidity,low content of oxygen, and uniform components.

Description

technical field [0001] The invention belongs to the technical field of alloy powder preparation, and in particular relates to a method for preparing copper alloy powder for additive manufacturing. Background technique [0002] Copper alloy has high electrical conductivity, thermal conductivity, high strength and good corrosion resistance. It is the earliest metal used in human history and one of the most widely used metal materials. High-strength and high-conductivity copper alloys are a class of functional materials with excellent comprehensive physical properties and mechanical properties. They are widely used in high-thrust rocket engine linings, overhead wires for high-speed electric locomotives, lead frames for integrated circuits, and electrodes for seam welding machines. , all kinds of spot welding, rotor wires of large high-speed turbine generators, contact materials, jet ignition nozzles in power plant boilers and gas machine nozzles, etc. [0003] With the develop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C9/06C22C1/02B22F9/10B22F1/00B33Y70/00
CPCC22C1/02C22C9/00C22C9/06B22F9/10B33Y70/00B22F1/065
Inventor 左振博兰剑李晨夕相敏林敏王庆相梁书锦赖运金张平祥
Owner SINO EURO MATERIALS TECH OF XIAN CO LTD
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