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Preparation method of high-performance contact material

A contact material, high-performance technology, applied in the direction of improving energy efficiency, additive manufacturing, additive processing, etc., can solve the problems of short life, poor wear resistance, low strength of contact materials, etc., to achieve long service life, internal structure The effect of uniform density and excellent impact resistance

Inactive Publication Date: 2020-08-11
GUANGXI TEACHERS EDUCATION UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chen Guangming and others (application number CN104263991A) prepared a silver tin oxide contact material by high pressure oxidation method, but the contact material has low strength, poor wear resistance, and short service life.

Method used

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  • Preparation method of high-performance contact material
  • Preparation method of high-performance contact material
  • Preparation method of high-performance contact material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, a preparation method of a high-performance contact material, the main structure of the high-performance contact material is a porous skeleton, comprising the following steps:

[0026] (1) Preparation of porous skeleton; the skeleton material is nickel alloy with high hardness and high strength, and the skeleton material is prepared into a porous skeleton by laser 3D printing technology; among them, the laser power P is 1500W, the scanning speed V is 100mm / min, and the spot The diameter D is 0.8mm, the focal length H is 180mm, and the protective airflow L is 4L / min; the hole shape of the porous skeleton is a regular square, and the thickness of the skeleton wall is 1.5mm; the height range is 5mm; the width range is 10mm;

[0027] (2) Conductive metal powder filling and compaction; the porous skeleton prepared in step (1) is filled with conductive metal powder, and the filled conductive metal powder is copper alloy powder, which is compacted by ...

Embodiment 2

[0033] Such as figure 1 As shown, a preparation method of a high-performance contact material, the main structure of the high-performance contact material is a porous skeleton, comprising the following steps:

[0034] (1) Preparation of porous skeleton; the skeleton material is made of titanium alloy with high hardness and high strength, and the skeleton material is prepared into a porous skeleton by laser 3D printing technology; among them, the laser power P is 2000W, the scanning speed V is 500mm / min, and the spot The diameter D is 3mm, the focal length H is 220mm, and the protective air flow L is 15L / min; the hole shape of the porous skeleton is a regular arc shape, and the thickness of the skeleton wall is 8mm; the height range is 100mm; the width range is 500mm;

[0035] (2) Conductive metal powder filling and compaction; the porous skeleton prepared in step (1) is filled with conductive metal powder, and the filled conductive metal powder is copper alloy powder, which is...

Embodiment 3

[0040] Such as figure 1 As shown, a preparation method of a high-performance contact material, the main structure of the high-performance contact material is a porous skeleton, comprising the following steps:

[0041] (1) Preparation of porous skeleton; the skeleton material is made of tungsten-titanium with high hardness and high strength, and the skeleton material is prepared into a porous skeleton by laser 3D printing technology; wherein, the laser power P is 3000W, and the scanning speed V is 100mm / min. The spot diameter D is 0.5mm, the focal length H is 190mm, and the protective airflow L is 5L / min; the hole shape of the porous skeleton is irregular, and the thickness of the skeleton wall is 7mm; the height range is 50mm; the width range is 100mm;

[0042] (2) Conductive metal powder filling and compaction; the porous skeleton prepared in step (1) is filled with conductive metal powder, and the filled conductive metal powder is copper alloy powder, which is compacted by e...

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Abstract

The invention discloses a preparation method of a high-performance contact material. The contact material is prepared from nickel, tungsten and other alloys with high strength and excellent wear resistance as a porous framework, a copper alloy which fills holes and has excellent electrical conductivity and the like. The specific preparation method comprises steps as follows: firstly, the porous framework of nickel, tungsten and other alloys is prepared with a laser 3D printing technology; then the framework is filled with copper alloy powder, and a product is compacted on extrusion equipment;and finally, a sample filled with the copper alloy powder is subjected to vacuum sintering. The prepared electric contact material is more wear-resisting, has excellent shock resistance and long service life and is applicable to a high-voltage electrical contact.

Description

technical field [0001] The invention relates to the technical field of metal matrix composite material preparation, in particular to a method for preparing a high-performance contact material. Background technique [0002] Electrical contacts are used to connect, break and continuously carry current through mechanical actions, and the materials used to prepare these components are commonly referred to as electrical contact materials. Therefore, the electrical contact material needs to have high electrical conductivity and thermal conductivity, so that the current can be connected smoothly and the heat can be dissipated quickly; the mechanical wear resistance and arc erosion resistance are excellent, and the service life is long; the contact resistance is low and stable, ensuring long-term loading of the material. Flow without overheating; appropriate hardness to ensure the smooth rolling, stamping, drawing and other processing properties of the material. [0003] Chen Guang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/06B22F3/105B22F3/11B33Y10/00H01H11/04
CPCB22F7/06B22F3/11B33Y10/00H01H11/048B22F10/00B22F10/66B22F10/25B22F10/28Y02P10/25
Inventor 陈泉志劳远侠杨晶姚春兰蹇刘洋覃小英秦凯滢吴美锜
Owner GUANGXI TEACHERS EDUCATION UNIV
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