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Low abrasion drum-type brake facing and preparation method thereof

A brake lining, low-wear technology, used in friction linings, mechanical equipment, gear transmission mechanisms, etc., can solve the problems of unstable friction coefficient and fast wear, improve quality stability, reduce adhesive wear, wear and tear the effect of reducing the degree of

Active Publication Date: 2019-04-12
HUBEI FEILONG FRICTION & SEALING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional products currently on the market have disadvantages such as unstable friction coefficient and fast wear. Therefore, it is particularly important for the friction material industry to develop a new type of brake lining with good performance indicators.

Method used

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  • Low abrasion drum-type brake facing and preparation method thereof
  • Low abrasion drum-type brake facing and preparation method thereof
  • Low abrasion drum-type brake facing and preparation method thereof

Examples

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preparation example Construction

[0031] The present invention also provides a preparation method of the low-wear drum brake lining, comprising the following steps:

[0032] (1) Raw material mixing: steel fiber, precipitated barium sulfate, phenolic resin and mineral fiber are mixed, then adding raw material components other than glass fiber, and finally adding glass fiber to obtain a raw material mixture;

[0033] (2) Hot pressing: Pour the raw material mixture into the mold for hot pressing;

[0034] (3) Heat treatment: heat treatment is performed on the hot-pressed products.

[0035] In one embodiment of the present invention, in step (1), steel fiber, precipitated barium sulfate, phenolic resin and mineral fiber are mixed 4~8min, then add the raw material component except glass fiber, mix 3~6min, because The glass fiber is brittle and needs to be added last, and the raw material mixture is obtained after mixing for 1-2 minutes.

[0036] In one embodiment of the present invention, in step (2), the time of...

Embodiment 1

[0044] A drum brake lining, the materials and dosages of Examples 1 to 5 are shown in Table 1.

[0045] The material consumption table of table 1 embodiment 1~5

[0046]

[0047] The preparation method of this liner is:

[0048] (1) Raw material mixing: first, add steel fiber, precipitated barium sulfate, phenolic resin, and mineral fiber into the plow mixer and mix for 7 minutes for premixing; secondly, add the remaining formula materials (except glass fiber) Add it to the plow-rake mixer, mix at high speed for 4 minutes, and finally add glass fiber, and only turn on the plow and rake for 2 minutes to mix the materials evenly;

[0049] (2) Packing bag: weigh according to the feeding amount on the process card, put it into the packing bag, and then seal it;

[0050](3) Compression: Using a one-step molding method, put the packaged plastic pressing material into the mold groove of the hot press machine. The control temperature of hot pressing is 140-160°C, and the pressure...

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Abstract

The invention relates to low abrasion drum-type brake facing and a preparation method thereof. The brake facing is prepared from the components of raw materials in parts by weight: 10~14 parts of phenolic resin, 3~8 parts of butadiene-acrylonitrile rubber, 6~8 parts of synthesized graphite, 3~5 parts of frication powder, 15~30 parts of pre-cipitated barium sulfate, 20~30 parts of mineral fiber, 6~10 parts of glass fiber, 0.5~2 parts of alpha-aluminium oxide, 1~2 parts of carbon black, 3~7 parts of crystalline flake graphite, 3~8 parts of steel fiber, and 2~4 parts of magnetic materials. According to the low abrasion drum-type brake facing and the preparation method thereof, by adding magnetized magnetic materials to the raw materials, magnetic adsorption can be effectively conducted on thesteel fiber, adhesive wear, cutting wear and abrasive wear caused by a friction function in a braking process can be reduced, thus a degree of wear of the brake facing is lowered, and quality stability of the brake facing is increased.

Description

technical field [0001] The invention relates to the technical field of friction braking, in particular to a low-wear drum brake lining and a preparation method of the brake lining. Background technique [0002] With the rapid development of the friction material industry, people have higher and higher requirements for the performance indicators of brake linings (commonly known as "brake pads"), such as having sufficient and stable friction coefficients, comfortable braking, no noise, and wear-resistant Small, good thermal conductivity, low cost and more. However, conventional products currently on the market have disadvantages such as unstable friction coefficient and fast wear. Therefore, it is particularly important for the friction material industry to develop a new type of brake lining with good performance indicators. [0003] In view of this, the present invention is proposed. Contents of the invention [0004] A first object of the present invention is to provide ...

Claims

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Application Information

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IPC IPC(8): F16D69/02
CPCF16D69/02F16D2200/0021F16D2200/006F16D2200/0086
Inventor 张学芬罗金中
Owner HUBEI FEILONG FRICTION & SEALING MATERIALS
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