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Reusable lightweight braking disc and preparation method thereof

A brake disc, lightweight technology, applied in the direction of brake discs, brake types, brake components, etc., can solve the problems of easy peeling off of the coating, easy softening of the aluminum alloy substrate, and low bonding strength

Inactive Publication Date: 2018-02-23
BEIJING TIANYISHANGJIA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the aluminum alloy matrix of the brake disc is easy to soften, the bonding strength between the coating and the matrix is ​​not high, and the coating is easy to fall off in the prior art, thereby providing a Recycled lightweight brake disc and preparation method thereof

Method used

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  • Reusable lightweight braking disc and preparation method thereof
  • Reusable lightweight braking disc and preparation method thereof
  • Reusable lightweight braking disc and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] A reusable lightweight brake disc, including a substrate and a surface coating, and then a transition layer is provided between the substrate and the surface coating, and the transition layer is NiCrAlY alloy (-140+325 mesh, Beikuang New Material Technology Co., Ltd.), the surface coating is tungsten carbide-12% cobalt (that is, the surface coating includes 12wt% metal cobalt); the base material is aluminum. The preparation method is as follows: obtain the aluminum substrate of the brake disc by casting, then clean and roughen the substrate to increase the bonding strength between the coating and the substrate, and prepare NiCrAlY alloy (-140+325 mesh) by supersonic plasma spraying method , Beikuang New Material Technology Co., Ltd.) transitional coating, and then prepared tungsten carbide-12% cobalt surface coating by detonation spraying.

Embodiment 2

[0033] A reusable lightweight brake disc, including a substrate and a surface coating, with a transition layer between the substrate and the surface coating, the transition layer consists of three layers of NiAl (Beikuang New Material Technology Co., Ltd.) Alloy layer, zirconia 40% Al mixed layer (that is, the mixed layer is composed of 60wt% zirconia and 40wt% Al), zirconia 20% Al (that is, the mixed layer is composed of 80wt% zirconia and 20wt% Al) For the mixed layer, the base material is aluminum, and the surface coating is zirconia. The preparation method is as follows: obtain the aluminum substrate of the brake disc by casting, then clean and roughen the substrate to increase the bonding strength between the coating and the substrate, and then prepare the NiAl alloy layer, plasma The zirconia 40% Al mixed layer and the zirconia 20% Al mixed layer were prepared by spraying, and the zirconia surface coating was prepared by micro-arc oxidation.

Embodiment 3

[0035] A reusable lightweight brake disc, including a substrate and a surface coating, a transition layer is provided between the substrate and the surface coating, and the transition layer is NiCrAlY (-140+325 mesh, Beikuang New Material Technology Co., Ltd. Co., Ltd.) alloy layer, the transition layer is composed of one layer, the base material is aluminum alloy, and the surface coating is chromium carbide. The preparation method is as follows: the aluminum alloy substrate of the brake disc is obtained by casting, and then the substrate is cleaned and roughened to increase the bonding strength between the coating and the substrate, and the NiCrAlY alloy coating is prepared by supersonic spraying method, and then micro Chromium carbide coatings were prepared by arc oxidation.

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Abstract

The invention belongs to the technical field of automobile / high speed rail fittings, and particularly relates to a reusable lightweight braking disc and a preparation method thereof. The braking disccomprises a base body and a surface coating. The surface coating is made of zirconium oxide, aluminium oxide and chromium carbide or tungsten carbide-12% cobalt. A transition layer is arranged betweenthe base body and the surface coating. The transition layer selects and uses an alloy layer made of one or more of Al, Ni, Cr and Y and / or a mixed layer made of mixture of materials used for the surface coating and metal. The preparation method of the braking disc comprises the steps that the base body of the braking disc is obtained through casting; then washing and coarsening are conducted on the base body; and then the transition layer and the surface coating are prepared in sequence. According to the reusable lightweight braking disc and the preparation method thereof, the braking disc base body is not prone to being deformed, the bonding strength between the coating and the base body is high, and the coating is not prone to falling off.

Description

technical field [0001] The invention belongs to the technical field of automobile / high-speed rail accessories, and in particular relates to a reusable lightweight brake disc and a preparation method thereof. Background technique [0002] With the current energy consumption and air pollution becoming more and more serious, automobile exhaust is one of the main pollution sources, and reducing carbon dioxide emissions is a very important goal for mitigating climate change. According to the test data of automobile OEMs: every 10% reduction in weight of a car can save 10% of kinetic energy, reduce 4-10% of exhaust emissions, reduce 6-8% of fuel consumption, reduce 8% of acceleration time per 100 kilometers, and reduce braking distance 5% reduction, 50% increase in service life, 1kg reduction in car unsprung weight, equivalent to 9-10kg reduction in sprung weight. For today's cars, the weight reduction of the body is a trend. The weight reduction of the body should also be accomp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06C23C4/08C23C4/131C23C4/134C23C4/073C23C4/126C23C28/00F16D65/12
CPCC23C4/06C23C4/073C23C4/08C23C4/126C23C4/131C23C4/134C23C28/321C23C28/322C23C28/345F16D65/125F16D65/127F16D2065/132F16D2200/0026F16D2200/003F16D2250/0007F16D2250/0046
Inventor 吴佩芳释加才让王灿党一纵范叶明
Owner BEIJING TIANYISHANGJIA NEW MATERIAL
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