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

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...

AI Technical Summary

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

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