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Manufacturing method of friction material with copper-free ceramic formula

A friction material and manufacturing method technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of increased wear and tear, the failure of the braking function of friction materials, etc., to achieve good braking performance, good thermal conductivity, The effect of braking comfort

Inactive Publication Date: 2012-05-02
DONGYING BORUI BRAKE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Friction materials will generate a lot of heat during use. If the heat energy is not well conducted to accumulate on the surface of the friction material, it will lead to failure of the braking function of the friction material and increased wear, which will seriously affect the performance of the product.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] According to the following formula (weight percentage): 10% silicon-modified phenolic resin, 10% titanium-magnesium alloy fiber, 5% aramid pulp, 5% ceramic fiber, 16% aluminum oxide, 18% graphite, potassium titanate 16% wafer, 18% magnesium oxide, mix the raw materials, after mixing, hot press molding, grinding, and painting under the conditions of mold temperature of 160°C, molding pressure of 400kg / cm, and holding time of 10min. Brake pads with copper-free ceramic formula.

[0017] Bench test according to AK-Master standard. When performing the decay procedure, the decay rate is 23%, the friction coefficient is 0.31 for 180 kilometers, the noise performance level is 9.0, and the service life of the product is 45,000 kilometers, all of which are higher than the performance of ordinary ceramic friction materials.

Embodiment 2

[0019] According to the following formula (weight percentage): 12% silicon-modified phenolic resin, 8% aluminum-magnesium alloy fiber, 5% aramid pulp, 5% ceramic fiber, 15% aluminum oxide, 15% graphite, potassium titanate 15% of wafer and 25% of magnesium oxide are mixed with raw materials. After mixing, the mold temperature is 160°C, the molding pressure is 400kg / cm, and the holding time is 10min. Brake pads with copper-free ceramic formula.

[0020] Bench test according to AK-Master standard. When performing the decay procedure, the decay rate is 24%, the friction coefficient is 0.32 for 180 kilometers, the noise performance level is 8.9, and the service life of the product is 43,000 kilometers, all of which are higher than the performance of ordinary ceramic friction materials.

Embodiment 3

[0022] According to the following formula (weight percentage): 5% silicon-modified phenolic resin, 15% aluminum-zinc alloy fiber, 8% aramid pulp, 7% ceramic fiber, 10% aluminum oxide, 15% graphite, potassium titanate 10% wafer and 30% magnesium oxide are mixed raw materials. After mixing, the mold temperature is 160°C, the molding pressure is 400kg / cm, and the holding time is 10min. Brake pads with copper-free ceramic formula.

[0023] Bench test according to AK-Master standard. When performing the decay procedure, the decay rate is 25%, the friction coefficient of 180 kilometers is 0.29, the noise performance level is 8.5, and the service life of the product is 40,000 kilometers, all of which are higher than or equal to the performance of ordinary ceramic friction materials.

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PUM

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Abstract

The invention provides a manufacturing method of a friction material with a copper-free ceramic formula. The formula comprises the following raw materials in percent by weight: 5-15% of bonding agent, 20-30% of reinforcing material, 30-50% of friction performance adjusting agent and 20-30% of filler; the processing process comprises the following steps: all the raw materials required by the formula are put into a material mixing tank, and the mixed materials are stirred; after being discharged, the mixed materials are subjected to hot-pressing molding, the temperature of a mold is 160 DEG C, the molding pressure is 400kg / cm, and the pressure maintaining time is 10min; and the molded friction material can be used after grinding. The friction material has the advantages of good heat conductivity, no noise or falling ash and comfortable braking.

Description

technical field [0001] The invention relates to a method for manufacturing friction materials, in particular to a method for manufacturing copper-free friction materials for automobile brake pads. Background technique [0002] Metal fibers and metal powders are important components of friction material formulations. In ceramic friction material formulations, brass or copper fibers and their powders are mainly used. They not only play a vital role in the friction and wear properties of friction materials, It also undertakes the conduction of heat energy inside the friction material. Friction materials will generate a lot of heat during use. If the heat energy is not well conducted to accumulate on the surface of the friction material, it will lead to failure of the braking function of the friction material and increased wear, which will seriously affect the performance of the product. Contents of the invention [0003] The purpose of the present invention is to avoid the ...

Claims

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Application Information

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IPC IPC(8): C08J5/14C08L61/06C08L77/10C08K7/06C08K7/04C08K3/22C08K3/30C09K3/14
Inventor 张宏光穆广欣白克江张江山李忠贞
Owner DONGYING BORUI BRAKE SYST