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Pure-carbon draw runner for subway and preparation method of pure-carbon draw runner

A technology of pure carbon and sliding strips, which is applied in the direction of railway vehicles, electric vehicles, power collectors, etc.

Inactive Publication Date: 2019-01-25
DATONG XINCHENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing technology and raw materials to manufacture products gradually exposed various problems

Method used

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  • Pure-carbon draw runner for subway and preparation method of pure-carbon draw runner

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Embodiment 1

[0054] see figure 1 , a method for preparing a pure carbon slider for subways provided by an embodiment of the present invention, the method includes the following steps:

[0055] Pour the aggregate, powder and binder into the kneading pot for kneading treatment to obtain a kneaded paste;

[0056] The kneading paste is placed in a flaking machine for flaking, and after drying, the granules are made into 2mm particles with a Raymond mill;

[0057] Send the granules into the preheating cylinder of a screw extruder through a pipeline and preheat at a maximum temperature of 180°C, and then screw extrude to obtain a green product, and the volume density of the green product is ≥ 1.77g / cm3;

[0058] The green body product is fired once under the condition of air isolation to obtain the pure carbon slide bar for subway.

[0059] The preparation method of the pure carbon slider for the subway shown in this example produces the pantograph carbon slider material, which is a new type o...

Embodiment 2

[0060] Embodiment 2 is a kind of pure carbon slider for subway provided by the preferred embodiment of the present invention, and the method includes the following steps:

[0061] Pour the aggregate, powder and binder into the kneading pot for kneading treatment to obtain a kneaded paste;

[0062] The kneading paste is placed in a flaking machine for flaking, and after drying, the granules are made into 2mm particles with a Raymond mill;

[0063] Send the granules into the preheating cylinder of a screw extruder through a pipeline and preheat at a maximum temperature of 180°C, and then screw extrude to obtain a green product, and the volume density of the green product is ≥ 1.77g / cm3;

[0064] The green body product is fired once under the condition of air isolation to obtain the pure carbon slide bar for subway.

[0065] Wherein, the said pouring the aggregate, powder and binder into the kneading pot for kneading treatment includes: putting the aggregate and powder into the ...

Embodiment 3

[0067] Embodiment 3 is a kind of pure carbon sliding bar for subway provided by the preferred embodiment of the present invention. The method includes the following steps:

[0068] Pour the aggregate, powder and binder into the kneading pot for kneading treatment to obtain a kneaded paste;

[0069] The kneading paste is placed in a flaking machine for flaking, and after drying, the granules are made into 2mm particles with a Raymond mill;

[0070] Send the granules into the preheating cylinder of a screw extruder through a pipeline and preheat at a maximum temperature of 180°C, and then screw extrude to obtain a green product, and the volume density of the green product is ≥ 1.77g / cm3;

[0071] The green body product is fired once under the condition of air isolation to obtain the pure carbon slide bar for subway.

[0072] Wherein, the temperature of the green product is raised from 150°C to 550°C at a heating rate of 1.1-2.1°C / h;

[0073] Raise the temperature from 550°C to...

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Abstract

An embodiment of the invention provides a pure-carbon draw runner for a subway and a preparation method of the pure-carbon draw runner. The method comprises the following steps: pouring aggregates, powder and an adhesive in a mixing and kneading machine and carrying out mixing and mixing treatment to obtain mixed and kneaded paste; placing the mixed and kneaded paste in a sheet mill and rolling, and after air-drying sheets, preparing the sheets into particles with the sizes of 2 mm by using a Raymond mill; feeding the particles into a preheating cylinder of a screw extruder by a pipe and carrying out preheating treatment at the highest temperature of 180 DEG C, and then carrying out screw extrusion to obtain a blank product, wherein the volume density of the blank product is greater than or equal to 1.77 g / cm<3>; and primarily roasting the blank product under the condition that the blank product is isolated from air to obtain the pure-carbon draw runner for the subway. A pantograph carbon draw runner material produced by the preparation method of the pure-carbon draw runner for the subway provided in the second aspect is a novel carbon product, and has quite good physico-chemical performance indexes, due to addition of silicon carbide, the conductivity, heat conduction property, friction property and wear resistance of the pantograph carbon draw runner material are improved remarkably, and the overall performance of the pure-carbon draw runner is improved.

Description

technical field [0001] The invention relates to the technical field of graphite processing, in particular to a pure carbon sliding bar for subways and a preparation method thereof. Background technique [0002] The pantograph-catenary system is the main source of power for electrified trains. It is mainly composed of catenary and pantograph / current receiver. The catenary is mostly made of pure copper or copper alloy materials. The carbon skateboard is a "throat" component that obtains traction power, which has an important impact on driving safety and operating costs, and is a key consumable component. At present, there are two types of carbon skateboards for domestic subways: one is carbon skateboards for pantographs; the other is carbon skateboards for collectors. The pantograph carbon slide plate is composed of carbon strips (with or without air passage), aluminum bracket with mounting seat, studs, nuts, washers, air system and other components. The carbon slide plate o...

Claims

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Application Information

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IPC IPC(8): C04B35/532C04B35/622B60L5/20
CPCB60L5/205B60L2200/26C04B35/522C04B35/532C04B35/622C04B2235/3826C04B2235/608C04B2235/6562
Inventor 纪永良
Owner DATONG XINCHENG NEW MATERIAL CO LTD
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