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Charcoal/pottery brake lining manufacturing method for industrial brake

A technology for brake linings and brakes, applied in friction linings, mechanical equipment, etc., can solve the problems of difficult removal of silicon bumps and increase the difficulty of processing, and achieve the effects of easy processing, reduced high-temperature oxidation damage, and reduced processing strength

Inactive Publication Date: 2009-07-29
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, previous studies have found that the excess molten silicon in the graphite crucible during the molten siliconizing process tends to adhere to the surface of the brake lining when it is cooled, forming silicon lumps that are difficult to remove, which increases the difficulty of subsequent processing.

Method used

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  • Charcoal/pottery brake lining manufacturing method for industrial brake
  • Charcoal/pottery brake lining manufacturing method for industrial brake

Examples

Experimental program
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Effect test

Embodiment 1

[0041] (1) Firstly, the PAN type T700 (12K) carbon fiber produced by Japan Toray Company (Toray) is used to make tire mesh and no-weft fabric, and the single-layer 0° no-weft fabric, net tire layer, 90° no-weft fabric, The mesh layer is stacked in sequence, and then the density is 0.55g / cm by the method of relay needle punching. 3 carbon fiber prefabricated body;

[0042] (2) Under the protective atmosphere of argon, the preform is subjected to a high-temperature heat treatment before 1800 ° C, the whole time is 5 hours, and the pressure is slightly positive pressure (that is, slightly exceeding the zero scale of the vacuum pressure gauge);

[0043] (3) Propylene is used as the carbon source gas, hydrogen is used as the dilution gas, and the volume ratio of propylene to hydrogen is 1:2. The isothermal chemical vapor infiltration method is used to deposit pyrolytic carbon on the preform at 1100 ° C. After 150 hours of deposition The prepared density is 1.52g / cm 3 Low-density ...

Embodiment 2

[0057] (1) The tire net is made of PAN type T700 (12K) carbon fiber produced by Toray Corporation (Toray) in Japan and stacked layer by layer, and then the carbon fiber bundle is introduced into the carbon fiber bundle perpendicular to the laying direction by the method of relay needle punching. The density is 0.22g / cm 3 Carbon fiber preform;

[0058] (2) Carry out the pre-high temperature heat treatment of the carbon fiber prefabricated body at 1800 ° C, using argon as the protective gas, the whole time is 8 hours, and the pressure is slightly positive pressure (that is, slightly exceeding the zero scale of the vacuum pressure gauge);

[0059] (3) Natural gas is used as the carbon source gas, hydrogen is used as the dilution gas, and the volume ratio of propylene to hydrogen is 1:3. Thermal gradient chemical vapor infiltration method is used to deposit pyrolytic carbon at 1000°C, and the density is obtained after deposition for 200 hours. 1.45g / cm 3 Low-density C / C material...

Embodiment 3

[0070] (1) Firstly, the PAN type T700 (12K) carbon fiber produced by Japan Toray Company (Toray) is used to make tire mesh and no-weft fabric, and the single-layer 0° no-weft fabric, net tire layer, 90° no-weft fabric, The mesh layers are superimposed in sequence, and then the density is 0.1g / cm by the method of relay needle punching. 3 carbon fiber prefabricated body;

[0071] (2) Under an argon protective atmosphere, the preform is subjected to a high-temperature heat treatment before 1500 ° C, the whole time is 10 hours, and the pressure is slightly positive pressure (that is, slightly exceeding the zero scale of the vacuum pressure gauge);

[0072] (3) Using methane as the carbon source gas, nitrogen as the diluent gas, and the volume ratio of methane and nitrogen as 1:1, using the isothermal chemical vapor infiltration method to deposit pyrolytic carbon on the preform at 900 ° C, and deposit it after 120 hours. The density is 1.0g / cm 3 Low-density C / C material;

[0073...

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Abstract

The invention discloses a method for manufacturing carbon / ceramic braking linings used in an industrial brake, which comprises the following steps: carbon fiber performs are prepared by a needle method; low-density C / C composite material is prepared by a chemical gas permeation method after the carbon fiber performs are treated in high temperature; the C / C composite material is treated in high temperature, machined and then the molten silicon infiltration is carried out on the C / C material in a high temperature vacuum furnace; Sic is formed by the Si and C reaction to prepare C / C-SiC baking material; and finally after the C / C-SiC baking material is machined, the C / C-SiC baking material is riveted with the steel backing by a rivet in a cold way to prepare the needed C / C-SiC baking material used in an industrial brake. The carbon / ceramic braking lining manufactured by the method has higher mechanical property and excellent frictional wear performance and is used in the industrial brake.

Description

technical field [0001] The invention discloses a method for manufacturing a carbon / ceramic (C / C-SiC) brake lining for industrial brakes, in particular, a carbon / ceramic (C / C-SiC) brake lining for industrial brakes is manufactured by combining chemical vapor infiltration and molten silicon infiltration technology. Material of moving lining, its processing and connection method with steel back. Background technique [0002] Brake lining is one of the key materials in industrial brakes. Its quality not only affects the braking performance of industrial machinery but also affects the safety of operators. Therefore, the brake lining material used must have the following functions: (1) high and stable friction coefficient; (2) high wear resistance; (3) sufficient strength; (4) good thermal decay resistance; (5) Strong environmental adaptability, that is, good oil, water and corrosion resistance. With the development of science and technology, people have higher and higher requir...

Claims

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Application Information

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IPC IPC(8): F16D69/02C04B35/83C04B35/565C04B35/622
Inventor 肖鹏李专熊翔
Owner CENT SOUTH UNIV
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