Friction plate, and its uses, production process and dedicated mould

A friction plate and mold technology, applied in the direction of friction shock absorber, etc., can solve the problems of easy wear, high friction coefficient of friction plate, fatigue resistance, corrosion resistance and poor shock absorption performance, and achieve the effect of improving wear resistance

Active Publication Date: 2009-07-15
BEIJING RAILWAY STAR FORTUNE HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the performance of the raw materials in the wear-resistant layer of the friction plate is not excellent enough, the friction plate produced has a high friction coefficient and is easy to wear, while the fatigue resistance, corrosion resistance, and shock absorption performance are relatively poor, and the surface of the friction plate is easy to break , falling blocks, these shortcomings seriously affect the service life of the friction plate

Method used

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  • Friction plate, and its uses, production process and dedicated mould

Examples

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Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: The embodiment of the present invention provides a friction plate, including glass cloth and a wear-resistant layer, the components and weight percentages of which are included in the wear-resistant layer are as follows: 15-30 parts of polyimide resin; 1.5 parts of mica iron oxide —3 parts; 4-8 parts of copper fiber; 10-17 parts of graphite; 1-5 parts of friction powder; 1.5-3 parts of magnesium oxide; 1-4 parts of petroleum coke; 13-30 parts of sepiolite; -2 parts; 2-15 parts of silica fume; 1-12 parts of short glass fiber; 2-12 parts of molybdenum disulfide; 1-10 parts of natural cellulose fiber.

[0031] Tests have proved that the friction plate made of the above raw materials has wear resistance, low wear, appropriate friction coefficient, excellent fatigue resistance, corrosion resistance, high vibration damping, good shock absorption, and good impact resistance. Performance, good weather resistance, can be used in an environment with large temperature ch...

Embodiment 2

[0036] Embodiment 2: The specific embodiment of the present invention also provides a production process for preparing the friction plate in Example 1. The raw materials of the friction plate in this embodiment can be weighed according to the specific gravity of the raw materials in Example 1. The production of this embodiment The process includes the following steps:

[0037] Fully mix and dry the raw materials of the wear-resistant layer to make wear-resistant materials;

[0038] Put 16-30 layers of glass cloth and 180g-300g wear-resistant material in turn in the mold with a temperature of 190°C-250°C and a pressure of 15-25Mpa, after exhausting 6-15 times and holding the pressure for 20-60 minutes Pressing;

[0039] The formed friction plate is put into a special curing furnace and cured at a temperature of 180°C-230°C for 3-8 hours to form a friction plate.

[0040] In actual production, after the above steps are completed, the friction plate can also be cured, polished,...

Embodiment 3

[0041] Embodiment 3: as figure 1 As shown, the specific embodiment of the present invention also provides a special mold for the friction plate, the mold includes a mold cavity 2, an outer mold body 10, a fixed upper pressure head 1 and a bottom plate 11, and the fixed upper pressure head 1 cooperates with the film cavity 2 To press the friction plate, the mold also includes a plurality of movable lower pressure heads 7 and at least one movable upper pressure head 3, the movable upper pressure head 3 and the movable lower pressure head 7 can move in the mold cavity 2 and cooperate with the fixed upper pressure head 1 Press the friction plate, the positional relationship of the movable upper pressure head, the movable lower pressure head, the fixed upper pressure head and the bottom plate from top to bottom or from left to right is fixed upper pressure head, movable lower pressure head, movable upper pressure head, movable Lower pressure head, bottom plate. Since the mold is p...

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Abstract

The embodiment of the present invention provides a friction plate and its application, production process and special mold. The friction plate includes glass cloth and a wear-resistant layer. The composition and content of the wear-resistant layer are as follows: polyimide resin 15-30 1.5-3 parts of mica iron oxide; 4-8 parts of copper fiber; 10-17 parts of graphite; 1-5 parts of friction powder; 1.5-3 parts of magnesium oxide; 1-4 parts of petroleum coke; 0.1-2 parts of stearic acid; 2-15 parts of silica fume; 1-12 parts of short glass fiber; 2-12 parts of molybdenum disulfide; 1-10 parts of natural cellulose fiber. The embodiment of the present invention also provides an application and production process of the friction plate and a special mold. The friction plate has wear resistance, fatigue resistance and corrosion resistance, and the production cost of the friction plate is reduced by using the special mold.

Description

technical field [0001] The invention relates to a friction plate and its application, production process and special mold, in particular to a friction plate of a locomotive damping system, its application, production process and a special mold. Background technique [0002] The friction plate is a high-tech railway vehicle accessory, which is used for the shock absorption system of high-speed and heavy-duty railway vehicles. In order to meet the requirements of the vehicle shock absorption system after speed increase, the Ministry of Railways proposed to use polymer composite material friction plate as an important part of the shock absorption system. part. [0003] The main formulation of the wear-resistant layer in the friction plate of the polymer composite material used in the current railway system is 35%-45% chrysotile fiber or sepiolite fiber or pre-oxidized fiber, 1%-8% copper fiber or steel fiber 17%-23% phenolic resin or cashew nut shell oil modified phenolic resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F7/08C08J5/14C08L79/08C08K7/14C08K3/00C08K5/00
Inventor 周建华
Owner BEIJING RAILWAY STAR FORTUNE HIGH TECH
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