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Wet-type carbon-carbon friction material, friction element and manufacturing method

A friction material and friction element technology, applied in chemical instruments and methods, friction linings, adhesive types, etc., can solve the problems of large friction coefficient decline, large friction coefficient fluctuation, poor overload resistance, etc., and achieve high energy Effect of absorption and power absorption capacity, good thermal and chemical stability, stable coefficient of friction

Inactive Publication Date: 2008-05-14
HANGZHOU ADVANCE GEARBOX GRP
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Problems solved by technology

Wet copper-based friction materials have disadvantages such as low dynamic friction coefficient, large difference in static and dynamic friction coefficient, large impact when clutching or braking, large friction coefficient decline or even failure under high power load conditions, and large fluctuations in friction coefficient when working conditions change.
Paper-based friction materials and high-elastic rubber friction materials can only work at low interface temperatures, and the matrix has low strength and cannot withstand high pressure loads. The friction coefficient decays greatly under high energy load conditions. Large fluctuations when changing, extremely poor anti-overload ability
These wet friction materials and the friction elements made of them cannot meet the requirements of clutches and brakes towards high specific pressure, high line speed, and small structure, especially cannot meet the current requirements of high specific pressure or high line speed or high friction work. Clutch and brake fields under high power conditions, as well as working conditions where frequent clutch braking and continuous slipping require good durability and reliability

Method used

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  • Wet-type carbon-carbon friction material, friction element and manufacturing method

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments: The present invention mainly includes: ① making steel parts, selecting steel materials, punching and / or machining and / or thermal processing, and making special-purpose parts through surface treatment. Steel part; the steel part adopts the structural design and material design of the internal friction elements of the current wet friction clutch, brake and synchronizer;

[0015] ② The production of wet carbon-carbon friction materials uses a single-layer carbon fiber woven cloth as the matrix skeleton. The carbon fiber woven cloth is two-dimensionally woven from 3K or 6K or 12K carbon fibers; As the binding phase, the amount of vapor-deposited carbon accounts for 5%-35% of the total amount, and keeps the material with 25%-55% of connected pores. The wet carbon-carbon friction material is heat-treated at 1700°C-2200°C to densify the vapor-deposite...

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Abstract

The invention provides a wet carbon-carbon friction material and a friction element and a manufacture method. The wet carbon-carbon friction material takes carbon fiber weaved cloth as a framework and is formed by changing the gaseous phase deposition carbon into gluing phase. The friction element comprises a steel part which is bonded with the wet carbon-carbon friction material by special adhesive; the manufacture method comprises (1) steel part manufacture, (2) manufacture of wet friction-friction friction material, (3) patching technique; the invention is made by the wet carbon-carbon material bonded to at least one surface of the steel part by the special adhesive. The invention has the advantages of extremely high strength and toughness, extremely good heat stability and chemical stability, extremely high energy adsorption and power adsorption capability, high and stable friction coefficient, low abrasion ratio, etc.

Description

technical field [0001] The invention relates to a novel friction material, a friction element and a manufacturing method which work in oil and are applicable to clutches, brakes and synchronizers, and belong to a friction material and its preparation. Background technique [0002] In the prior art, wet friction materials used for clutching and braking include wet copper-based friction materials, paper-based friction materials, and rubber high-elasticity friction materials. Wet copper-based friction materials have disadvantages such as low dynamic friction coefficient, large difference in static and dynamic friction coefficient, large impact when clutching or braking, large friction coefficient decline or even failure under high power load conditions, and large fluctuations in friction coefficient when working conditions change. . Paper-based friction materials and high-elastic rubber friction materials can only work at low interface temperatures, and the matrix has low stre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14C09J161/06C09J11/00
Inventor 刘有德戴国文徐小和
Owner HANGZHOU ADVANCE GEARBOX GRP
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