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Ti3SiC2/Al2O3 hybrid reinforcing copper-based composite sliding plate material and preparation method thereof

A copper-based composite, sliding plate technology, used in metal processing equipment, coating, transportation and packaging, etc., can solve the problem of pantograph sliding plate working stability, poor wear resistance performance index, poor impact resistance, poor operational reliability and other problems to achieve the effect of reducing the possibility of forming defects and pits, improving impact resistance and prolonging life.

Active Publication Date: 2015-03-04
安徽科益工业设计服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a sturgeon fish stick and its preparation method. The present invention not only solves the problem of the short service life of the pantograph slide plate and the contact grid made of traditional pantograph slide material, but also its impact resistance Poor, leading to the formation of defects and pits, resulting in poor operational reliability; and effectively solve the problem of poor performance indicators such as the working stability and wear resistance of the existing copper-titanium silicon carbon composite material pantograph slide

Method used

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  • Ti3SiC2/Al2O3 hybrid reinforcing copper-based composite sliding plate material and preparation method thereof
  • Ti3SiC2/Al2O3 hybrid reinforcing copper-based composite sliding plate material and preparation method thereof
  • Ti3SiC2/Al2O3 hybrid reinforcing copper-based composite sliding plate material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] 1) First prepare nano-copper-plated nano-Al 2 o 3 The wt% ratio is 1%, copper-plated Ti 3 SiC 2 The wt% is 20%, and the rest is copper powder with a particle size of 200 mesh;

[0044] 2) Sequentially weigh 2g of copper-plated nano-Al 2 o 3 Powder, 40g copper-plated Ti 3 SiC 2 The powder and 158g of copper powder are then mixed mechanically, the mixing time is 10h, and the mixing speed is 200rpm. The mixing speed should not be too high to prevent damage to the integrity of the surface coating;

[0045] 3) Use a steel mold of 200MPa to pre-compact, then put the pre-compact into a graphite mold with an inner diameter of 70mm, and carry out vacuum hot-press sintering. During hot-press sintering, the temperature is raised at a speed of 15°C / min, and the sintering temperature is 800°C , the sintering pressure is 25MPa, and the sintering time is controlled at 1h;

[0046] 4) Use an extrusion die with a die size of 28*38 for hot extrusion molding. Strictly control the ...

Embodiment 2

[0049] 1) First prepare copper-plated nano-Al 2 o 3 The wt% ratio is 3%, copper-plated Ti 3 SiC 2 The wt% is 30%, and the rest is copper powder with a particle size of 200 mesh;

[0050] 2) Weigh 6g of copper-plated nano-Al in sequence 2 o 3 Powder, 60g copper-plated Ti 3 SiC 2 The powder and 134g of copper powder are then mechanically mixed, the mixing time is 10h, and the mixing speed is 200rpm. The mixing speed should not be too high to prevent damage to the integrity of the surface coating;

[0051] 3) Use a steel mold of 250MPa to pre-compact the compact, then put the pre-compact into a graphite mold with an inner diameter of 70mm, and carry out vacuum hot-press sintering. During hot-press sintering, the temperature is raised at a speed of 20°C / min, and the sintering temperature is 850°C , the sintering pressure is 30MPa, and the sintering time is controlled at 1.5h;

[0052] 4) Use an extrusion die with a die size of 28*38 for hot extrusion molding. Strictly cont...

Embodiment 3

[0055] 1) First prepare copper-plated nano-Al 2 o 3 The wt% ratio is 5%, copper-plated Ti 3 SiC 2 The wt% is 40%, and the rest is copper powder with a particle size of 200 mesh;

[0056] 2) Weigh 10g of copper-plated nano-Al in sequence 2 o 3 Powder, 80g copper-plated Ti 3 SiC 2 The powder and 110g of copper powder are then mechanically mixed, the mixing time is 10h, and the mixing speed is 200rpm. The mixing speed should not be too high to prevent damage to the integrity of the surface coating;

[0057] 3) Use a steel mold of 300MPa to pre-compact the compact, and then put the pre-compact into a graphite mold with an inner diameter of 70mm for vacuum hot-press sintering. During hot-press sintering, heat up at a speed of 25°C / min, and the sintering temperature is 900°C , the sintering pressure is 35MPa, and the sintering time is controlled at 2h;

[0058] 4) Use an extrusion die with a die size of 28*38 for hot extrusion molding. Strictly control the extrusion temperat...

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Abstract

The invention discloses a Ti3SiC2 / Al2O3 hybrid reinforcing copper-based composite sliding plate material and a preparation method thereof. The copper-based composite sliding plate material is characterized by consisting of the following components in percentage by mass: 1-5% of nano Al2O3 powder, 20-40% of Ti3SiC2 powder and the balance of copper powder. By adopting the copper-based composite sliding plate material and the preparation method thereof, disclosed by the invention, the problems of formation of defects and pits and poor running reliability of a pantograph sliding plate and a contact power network which are prepared from a conventional pantograph sliding plate material and are short in service life and poor in impact resistance are solved; moreover, the problems of poor performance indexes of working stability, wear resistance and the like of the conventional pantograph sliding plate prepared from a copper-titanium silicon carbide composite material are solved.

Description

[0001] technical field [0002] The invention relates to the technical field of pantograph sliding plate materials and preparation methods thereof, in particular to a Ti 3 SiC 2 / Al 2 o 3 Hybrid reinforced copper-based composite sliding plate material and its preparation method. Background technique [0003] With the acceleration of the development of electric locomotives, higher and higher requirements are put forward for the materials and structures of contact wires and pantograph slides. The development and research of pantograph slides are diverse. The types of slides are derived from pure metal slides, Powder metallurgy copper-based slides and iron-based slides, pure carbon slides, metal-impregnated carbon slides and composite material slides, etc. Among them, pure metal skateboards and iron-based skateboards are rarely used due to serious wear and tear on the contact wires. Pure carbon skateboards have poor impact resistance and are prone to defects and pits on the...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C32/00B22F1/00B22F3/16
CPCC22C1/0425C22C1/05C22C9/00B22F3/20B22F2003/145B22F2998/10B22F1/17
Inventor 符学龙嵇正波
Owner 安徽科益工业设计服务有限公司
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