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

A friction plate and mold technology, which is applied in the direction of friction shock absorber, etc., can solve the problems of easy wear, the surface of the friction plate is easy to break, fall off, affect the service life of the friction plate, etc., and achieve the effect of improving wear resistance

Active Publication Date: 2008-02-20
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 wear-resistant layer contains the following components and weight percentages: 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; -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 changes for a long time, very suitable for the en...

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; the glass cloth and 180g-300g wear-resistant materials are pressed and formed after exhausting 6-15 times and holding pressure for 20-60 minutes;

[0038] 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.

[0039] In actual production, after the above steps are completed, the friction plate can also be cured, polished, drilled, marked and other post-processing. Make the performance of the friction plate more promi...

Embodiment 3

[0040] Embodiment 3: As shown in Figure 1, the specific embodiment of the present invention also provides a kind of special mold of friction plate, and this mold comprises mold cavity 2, outer mold body 10, fixed upper pressure head 1 and bottom plate 11, fixed upper pressure The 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 to press the friction plate, the positional relationship between 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 , Active upper pressure head, movable lower pressure head, bottom plate. Since the mold i...

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Abstract

The execution mode of the invention provides a friction plate and the application technology, production technology and the special mold; the friction plate includes a glass cloth and a wearing course, the ingredients and content of the wearing course are as follows: 15-30 shares of polyamide resin; 1.5-3 shares of mica ferric oxide; 4-8 copper fiber; 10-17 shares of plumbago; 1-5 shares of friction powder; 1.5-3 shares of magnesia; 1-4 shares of petroleum coke; 13-30 shares of meerschaum; 0.1-2 shares of stearic acid; 2-15 shares of silicon ashes; 1-12 shares of short glass fiber; 2-12 shares of supramoly and 1-10 shares of natural cellulose fiber. The execution mode of the invention further provides an application technology, production technology and the special mold of the friction plate. The friction plate has the advantages of wear-resistant, fatigue-resistant, and corrosion-resistant, and when in use, the special mold can reduce the manufacturing cost of the friction plate.

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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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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