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Wet friction material with orifices

A technology of wet friction materials and filling materials, which is applied in the direction of friction linings, friction elements, friction clutches, etc., and can solve problems such as impracticality and waste

Inactive Publication Date: 2020-08-11
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is fine for very large quantities of paper, but there is a lot of waste during initial set-up, so it is not practical for production of smaller quantities

Method used

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  • Wet friction material with orifices
  • Wet friction material with orifices
  • Wet friction material with orifices

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Embodiment Construction

[0019] The present disclosure provides embodiments of wet friction materials capable of providing sufficient friction at high sliding speeds while still maintaining porosity. Adding a friction modifier layer to the top surface improves friction performance but blocks the pores of the underlying wet friction material. The present disclosure provides small pores in the friction modifier layer to increase porosity and performance at high sliding speeds.

[0020] Figure 1 to Figure 4 A method of forming wet friction material and a clutch assembly according to embodiments of the present disclosure are schematically illustrated. The wet friction material base layer 10 is processed separately from the outer layer 12 or as a single piece. figure 1 The base layer 10 and outer layer 12 are shown as separate pieces.

[0021] Base layer 10 is a wet friction material formed of fibers, filler material and binder. The fibers may be aramid fibers, organic fibers, carbon fibers and / or gla...

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Abstract

A method of making a wet friction material includes providing an outer layer on a base layer to form the wet friction material. The base layer includes a proportion of first fiber material and a proportion of first filler material and the outer layer includes a proportion of second fiber material and a proportion of second filler material. The proportion of second fiber material is less than the proportion of first fiber material and the proportion of second filler material is greater than the proportion of first filler material. The method also includes forming a plurality of orifices passingthrough the outer layer.

Description

technical field [0001] The present disclosure relates generally to friction clutches and plates used in torque converters and motor vehicle transmissions, and more particularly to wet friction materials. Background technique [0002] The friction material in a wet friction clutch typically operates in an oil-immersed environment and is often a paper-based material used to form the friction material rings. It is known that during the papermaking process diatomaceous earth sold under the trade name CELITE is sprayed or sprayed directly onto the substrate in fourdrinier paper machines as the paper base material moves along the conveyor at the wet end of the machine. top. This process works well for very large quantities of paper, but there is a lot of waste during initial set-up, so it is not practical for smaller quantities of production. [0003] US Patent 6,013,696 discloses the use of a laser to form pores in cured resin-impregnated friction material. [0004] US Patent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D13/38B23K26/364F16D69/00
CPCB32B2605/00B32B2260/021B32B37/12B32B2310/0843B32B2038/047F16D13/60F16H2045/0289B32B15/14B32B2307/744B32B2262/0269B32B2262/101B32B2264/108B32B2475/00B32B2307/554B32B5/26B32B3/266B32B2260/023B32B2307/732B32B2250/02B32B2262/062B32B2262/106B32B2264/102B32B2260/046B32B7/02B32B7/12B32B38/00F16H45/02B32B2315/16F16D2250/0038F16D2200/006F16H2045/0294F16D13/64
Inventor 拉希德·法拉哈尼奥卢桑米·阿德里安
Owner SCHAEFFLER TECH AG & CO KG