Train shoe or brake pad made of glass-ceramic composite material and preparation method thereof

A composite material and glass-ceramic technology, applied in chemical instruments and methods, friction linings, mechanical equipment, etc., can solve problems such as sharp increase in labor and mechanical costs, brake dust and exhaust gas environmental hazards, and achieve cost reduction and safety Excellent performance and improved coefficient of friction

Pending Publication Date: 2017-06-27
赵凤宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a train brake shoe or brake pad made of a glass-ceramic composite material and its preparation method, which solves the problem of frequent replacement of tiles in the prior art, a sharp increase in labor and mechanical costs, and the impact of brake dust and exhaust gas on the environment. Hazard and other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In the present embodiment, by weight percentage, the composition of glass-ceramic composite material for train brake shoe (brake pad) is: glass-ceramic 40%, basalt chopped fiber 11%, fly ash 32%, graphite powder 6% , barite powder 10%, regulator 1%. Among them, by weight percentage, the composition of glass-ceramic powder is: silicon dioxide 35%, aluminum oxide 16%, lead dioxide 10%, zinc oxide 24%, calcium fluoride 8%, magnesium fluoride 4% , copper oxide 3%. The particle size of glass-ceramic powder, fly ash, graphite powder and barite powder is 300 mesh, the specification of chopped basalt fiber is: length 5-15 mm, diameter 0.1 mm, regulator is attapulgite (also known as attapulgite Palygorskite or palygorskite is a kind of hydrous magnesium-rich aluminum silicate clay mineral with chain layer structure).

[0027] In the present embodiment, the preparation method of the glass-ceramic composite material train brake shoe (brake pad), the specific steps are as follows...

Embodiment 2

[0032] In the present embodiment, by weight percentage, the composition of glass-ceramic composite material for train brake shoe (brake pad) is: glass-ceramic powder 38%, basalt chopped fiber 12%, fly ash 32%, graphite powder 5% %, barite powder 11.5%, regulator 1.5%. Among them, by weight percentage, the composition of glass-ceramic powder is: silicon dioxide 35%, aluminum oxide 15%, lead dioxide 9%, zinc oxide 26%, calcium fluoride 8%, magnesium fluoride 5% , copper oxide 2%. The particle size of glass-ceramic powder, fly ash, graphite powder and barite powder is 400 mesh, the specification of chopped basalt fiber is: length 5-15 mm, diameter 0.1 mm, and the regulator is attapulgite.

[0033] In the present embodiment, the preparation method of the glass-ceramic composite material train brake shoe (brake pad), the specific steps are as follows:

[0034] (1) Mixing: According to the composition of glass-ceramic composite materials, weigh the required raw materials and put t...

Embodiment 3

[0038] In the present embodiment, by weight percent, the glass-ceramic composite material for train brake shoes (brake pads) is composed of: glass-ceramic powder 37%, hybrid fiber 13% of glass fiber and basalt chopped fiber, floating bead powder 28%, flake graphite powder 4%, feldspar powder 10%, talc powder 7%, regulator 1%. Among them, by weight percentage, the composition of glass-ceramic powder is: silicon dioxide 33%, aluminum oxide 17%, lead dioxide 9%, zinc oxide 27%, calcium fluoride 7%, magnesium fluoride 4% , copper oxide 3%. The particle size of glass-ceramic powder, floating pearl powder, flake graphite powder, feldspar powder, and talc powder is 300 mesh, and the specification of basalt chopped fiber is: length 5-15 mm, diameter 0.1 mm, mixture of glass fiber and basalt chopped fiber The fiber weight ratio is 1:1, and the regulator is attapulgite.

[0039] In the present embodiment, the preparation method of the glass-ceramic composite material train brake shoe ...

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Abstract

The invention belongs to the field of train brake shoes (brake pads), specifically a train brake shoe or brake pad made of a glass-ceramic composite material and a preparation method thereof, which solves the labor and mechanical cost of frequent tile replacement in the prior art. increase, and the environmental hazards of brake dust and exhaust gas. In terms of weight percentage, the composition of the glass-ceramic composite material is: glass-ceramic powder 35-42%, basalt chopped fiber 10-15%, fly ash 30-35%, graphite powder 5-7%, barite powder 9-15%, regulator 1-3%. The low crystallization point (<750°C) microcrystalline glass-ceramics proposed by the present invention and fly ash, basalt, barite powder as the main material are microcrystalline composite brake shoes manufactured by hot die casting method, which not only improves the wear resistance by 5 to 10 times , The friction coefficient is increased by 2 to 3 times, and the safety performance is better than that of the powder metallurgy brake shoe, and the cost is reduced by more than 70%. The emission rate of dust and harmful gas is reduced by more than 90%.

Description

technical field [0001] The invention belongs to the field of train brake shoes (brake pads), in particular to a train brake shoe or brake pad made of a glass-ceramic composite material and a preparation method thereof. Background technique [0002] The train brake shoes currently used are mostly composed of high-phosphorus cast iron powder, rubber, and plastic as binders. When the speed of trucks develops from 50 kilometers per hour to 120 kilometers per hour, and the speed of passenger cars develops from 60 kilometers per hour to 350 kilometers per hour. Under the current situation, the safety and environmental protection requirements for train brake shoes are getting higher and higher. The original low-speed brake shoes will produce dust from high wear and harmful gases from elevated temperatures under high-speed conditions, and the safety performance will be reduced. , Frequent replacement of brake shoes also wastes manpower. Copper-based powder metallurgy brake shoes ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
CPCF16D69/02C09K3/14F16D2200/0052F16D2200/006F16D2250/0023
Inventor 赵凤宇
Owner 赵凤宇
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