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Preparation method of CuCrZr spherical powder for 3D printing

A spherical powder and 3D printing technology, which is applied in the field of metal powder manufacturing, can solve the problems that alloy powder is difficult to apply, and achieve the effect of avoiding micro-pores and micro-cracks, uniform and adjustable powder particle size, and high hardness

Active Publication Date: 2022-05-13
SIRUI ADVANCED COPPER ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the alloy powder prepared by this method is difficult to apply to SLM 3D printing, which requires high powder

Method used

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  • Preparation method of CuCrZr spherical powder for 3D printing
  • Preparation method of CuCrZr spherical powder for 3D printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for preparing CuCrZr spherical powder for 3D printing, comprising the following steps:

[0039] S1. Ingredients: Prepare raw materials according to requirements. The raw materials are calculated according to mass percentage: 1% of metal chromium block, 0.045% of zirconia powder, 0.25% of 20% mass concentration of zirconia dichloride octahydrate, and the balance is electrolytic copper plate. The purity of metal chromium block is 99.97%;

[0040] The preparation method of zirconia powder is:

[0041] S1-1: Mix zircon concentrate powder with flake graphite, pyrolytic graphite and calcite at a mass ratio of 23:6:5:2, put them into a grinder and grind them until the particle size is less than 0.5mm to obtain a mixed powder ;

[0042] S1-2: Place the ground mixed powder in an electric arc furnace, arc smelt at 2740°C for 2.5 hours, then quench the temperature to 555°C, use liquid nitrogen to cool down, and the cooling rate is 190°C / h to obtain zirconium-rich crys...

Embodiment 2

[0054] The difference between this embodiment and embodiment 1 lies in that the distribution ratio of each component of the ingredients in step S1 is different.

[0055] S1. Ingredients: Raw materials are prepared according to the requirements. The raw materials are calculated according to mass percentage: 0.9% of metal chromium block, 0.04% of zirconia powder, 0.2% of 20% mass concentration of zirconia dichloride octahydrate, and the balance is electrolytic copper plate. The purity of the metallic chromium block is 99.95%.

Embodiment 3

[0057] The difference between this embodiment and embodiment 1 lies in that the distribution ratio of each component of the ingredients in step S1 is different.

[0058] S1. Ingredients: Raw materials are prepared according to the requirements. The raw materials are calculated according to mass percentage: 1.1% of metal chromium block, 0.05% of zirconia powder, 0.3% of 20% mass concentration of zirconia dichloride octahydrate, and the balance is electrolytic copper plate. The purity of the metallic chrome block is 99.99%.

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Abstract

The invention discloses a preparation method of CuCrZr spherical powder for 3D (three-dimensional) printing, which comprises the following steps: S1, proportioning: preparing raw materials in percentage by mass as required: 0.9-1.1% of metal chromium block, 0.04-0.05% of zirconium oxide powder, 0.2-0.3% of zirconium oxychloride octahydrate and the balance of electrolytic copper plate; s2, primary vacuum melting; s3, secondary overweight smelting is carried out; s4, performing airflow grinding to prepare powder; and S5, post-processing. The CuCrZr spherical powder is good in sphericity degree and high in hardness, the material components meet the requirements, various requirements of SLM 3D printing can be met, the printed alloy material is high in density and uniform in structure, and further application and popularization are facilitated.

Description

technical field [0001] The invention relates to the technical field of metal powder manufacturing, in particular to a method for preparing CuCrZr spherical powder for 3D printing. Background technique [0002] Pure copper and copper alloys are widely used in fields such as electric power, heat dissipation, pipelines, and decoration due to their excellent electrical conductivity, thermal conductivity, corrosion resistance, and toughness. Some copper alloy materials have good electrical conductivity, thermal conductivity, and comparative High strength, widely used in the manufacture of aviation and aerospace engine combustion chamber components. However, with the increasing demand for complex structural components on the application side, traditional processing techniques have gradually been unable to meet all demands. [0003] Metal 3D printing technology can manufacture complex functionally integrated components with high material utilization and no need for molds. These ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04B33Y70/00B22F1/00C22C9/00
CPCB22F9/04C22C9/00B33Y70/00B22F2009/044
Inventor 贺猛闫利平杨莉聂红锋翟荣荣孙刚刚
Owner SIRUI ADVANCED COPPER ALLOY CO LTD
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