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A low-wear disc friction plate and its preparation method

A friction lining and low-wear technology, which is applied to friction linings, chemical instruments and methods, and brake parts, can solve problems such as unstable braking coefficients on local friction surfaces, braking deviation, and rollover, so as to avoid Effects of scratches and grooves, stable friction coefficient, and increased bonding strength

Active Publication Date: 2020-05-22
HUBEI FEILONG FRICTION & SEALING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The intervention of iron particles will lead to instability of the braking coefficient of the local friction surface, causing braking deviation, and even accidents such as rollover and rear-end collision

Method used

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  • A low-wear disc friction plate and its preparation method
  • A low-wear disc friction plate and its preparation method
  • A low-wear disc friction plate and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0053] The embodiment of the present invention also provides a method for preparing a disc friction plate, comprising the following steps:

[0054] (1) Surface treatment of the steel back: Sandblast and polish the steel back, then spray high-temperature-resistant glue on the contact surface between the steel back and the buffer layer, and spray noise-absorbing and damping paint on the other sides of the steel back.

[0055] Among them, the high temperature resistant glue can be phenolic resin liquid glue, its viscosity is 1500-1700 (25°C CP), the free phenol content is ≤1.0%, and the gelation time is 5-6 minutes.

[0056] The weight composition of the raw materials of the sound-absorbing and damping paint is as follows: 45% of the above-mentioned phenolic resin liquid glue, 35% of thinner, 10% of mica, and 10% of wood powder. Its viscosity is 150-200 (25°C CP).

[0057] (2) Mixing of buffer layer: PLC program-controlled feeding is adopted, and the raw materials of the buffer ...

Embodiment 1

[0063] A disc type friction plate includes a steel back, a buffer layer and a ceramic layer laminated in sequence.

[0064] Wherein, the buffer layer is prepared from raw materials including the following parts by weight: 15 parts of glass fiber, 5 parts of vermiculite, 13 parts of phenolic resin, 20 parts of light calcium carbonate, 5 parts of hemp fiber, 5 parts of calcium hydroxide, neodymium iron 6 parts of boron powder alloy, 5 parts of petroleum coke powder, 10 parts of mineral fiber, 8 parts of EPDM rubber powder, and 6 parts of barium sulfate.

[0065] The ceramic layer is prepared from raw materials including the following parts by weight: 10 parts of carbon fiber, 1018 parts of ceramic fiber, 14 parts of light calcium carbonate, 16 parts of phenolic resin, 4 parts of calcium hydroxide, 10 parts of diatomaceous earth, 15 parts of barium sulfate 6 parts of graphite, 6 parts of petroleum coke powder, 4 parts of mica, 3 parts of alumina, 4 parts of aramid fiber.

[0066...

Embodiment 2～5

[0085] In Examples 2-5, the thickness ratio of the buffer layer to the ceramic layer and the amount of magnetic material added were changed, and other raw materials and preparation processes were the same as in Example 1. The corresponding changing parameters and the wear rate at 100 °C are shown in Table 3.

[0086] table 3

[0087]

[0088] It can be seen from Table 3 that when the thickness ratio of the buffer layer to the ceramic layer is not in the range of 1:3, or the amount of magnetic material added changes, the wear rate will increase.

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Abstract

The invention provides a low-wear disc type friction plate. A buffer layer containing a magnetic material is added between a steel backing and a ceramic layer, adhesion between the buffer layer and the steel backing combination face can be improved, and the phenomenon that due to the brake high temperature (400 to 500 DEG C), the friction material buffer layer falls off from the steel backing face, and brake fails is avoided. The adhesion strength between the friction piece and the steel backing can be increased, iron hard points are prevented from appearing in the friction face, screeching and brake trembling generated in the brake process can be removed, brake disc scraping and grooves generated by the iron hard points can be avoided, and the service life of the brake disc can be prolonged.

Description

technical field [0001] The invention relates to the technical field of friction braking, in particular to a low-wear disc friction lining and a preparation method of the disc friction lining. Background technique [0002] Friction discs are components consisting of a steel back and layers of friction material and are widely used in mechanical engineering and automotive manufacturing. Its pros and cons not only affect the driving performance of the vehicle, but also relate to the life safety and driving comfort of the drivers and passengers. [0003] With the vigorous development of the new energy vehicle industry, the passenger vehicle market has higher and higher requirements for braking comfort and environmental friendliness. The elimination of brake noise and chattering has attracted more and more attention from customers and the market. The disc friction plate has transitioned from the traditional metal-semi-metal-based type to the ceramic-based type. [0004] Although...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/04F16D69/02C09K3/14
CPCF16D65/0006F16D65/0018F16D65/04F16D69/02F16D69/023F16D2069/007F16D2069/008F16D2200/0047F16D2200/006F16D2250/0023
Inventor 许亮
Owner HUBEI FEILONG FRICTION & SEALING MATERIALS
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