WO2010142265A1 - Friction material - Google Patents
Friction material Download PDFInfo
- Publication number
- WO2010142265A1 WO2010142265A1 PCT/DE2010/000587 DE2010000587W WO2010142265A1 WO 2010142265 A1 WO2010142265 A1 WO 2010142265A1 DE 2010000587 W DE2010000587 W DE 2010000587W WO 2010142265 A1 WO2010142265 A1 WO 2010142265A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sieve
- friction lining
- friction
- designed
- solids
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Compositions of linings; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
- F16D69/026—Compositions based on an organic binder containing fibres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0082—Production methods therefor
- F16D2200/0095—Mixing an aqueous slurry of fibres with a binder, e.g. papermaking process
Definitions
- the invention relates to a method having the features according to the preamble of claim 1, a device having the features according to the preamble of claim 8 and a friction lining having the features according to the preamble of claim 9
- Purpose of the invention is a friction lining consisting of a friction material that can be used in all applications in the automotive, where friction in oil is used.
- the friction material is suitable for use in the following applications: torque converter, automatic transmission, lock-up clutch, dual clutch, synchronizers, and similar in-oil friction applications.
- friction papers are mainly used which are produced on classical paper machines, i. Slurrying of fibers and fillers in water, making the paper webs on the paper machine, drying the paper webs and then impregnating the paper web in a resin solution (saturation) to ensure the necessary strength of the friction paper. Afterwards the paper has to be dried again, the respective geometries are punched out and glued on.
- the task is to develop a running in oil friction lining of a friction material that meets even the highest requirements in terms of coefficient of friction, comfort behavior and wear.
- the coefficient of friction behavior should be constant, so that the electronic control unit can be easily run and set in the respective application. Furthermore, the production should be flexible, simple and inexpensive
- the object is achieved by a method having the features according to claim 1, a device having the features according to claim 8 and by a friction lining having the features according to claim 9.
- the inventive method provides for the production of a friction lining for friction clutches in a motor vehicle, wherein a dispersion of water and solids is sucked onto a sieve-like surface and deposit the solids on the sieve-like surface.
- the sieve-like surface is designed in the form of a three-dimensional structure.
- the sieve-like surface is embodied in such a three-dimensional manner that the solids depositing on the sieve-like surface form a predetermined shape of the surface of the friction lining facing the sieve.
- the sieve-like surface is designed in such a way that the solids depositing on the sieve-like surface form a smooth surface of the friction lining.
- the sieve-like surface is designed in such a way that the solids depositing on the sieve-like surface form a profiled surface of the friction lining.
- the solids deposited on the screen are flowed through with hot air for drying, whereby the remaining moisture is expelled.
- the friction lining is surface-coated.
- surface coating materials such as zeolites, celite or silicon carbide are present, which can be incorporated into a resin matrix and then applied or applied without extra binder.
- a plurality of friction linings are superimposed and pressed over one another, so that a single friction lining is produced therefrom.
- an apparatus for carrying out the method described above is also provided, wherein the friction surface of the friction lining is designed as an illustration of the three-dimensionally designed sieve surface.
- a friction lining which is produced by the method described above as well as the device described above is also presented, the friction surface of the friction lining being designed as an illustration of the three-dimensionally designed sieving surface.
- the solids content of the friction material added to the friction lining includes 35-80 weight percent cotton fiber, 1-10 weight percent aramid fiber, 1-40 weight percent silica, 5-30 weight percent phenolic resin, and conventional processing aids for papermaking, the percentages given refer to the solids content
- An advantage of the method according to the invention and the device according to the invention and the friction lining according to the invention is that the shape of the friction lining formed by the friction material can be made completely variable, since all three spatial directions are varied and can be adjusted as required.
- FIG. 1 Schematic representation of the pulp molding process according to the invention
- FIG. 2 Schematic representation of the coating process of the invention
- FIG. 3 Schematic representation of a friction lining according to the invention
- Figure 4 Schematic representation of a friction lining according to the invention
- the solids content of the ingredients of the friction material added for the production of the friction lining has the following composition, the percentages are in percent by mass based on the solids content:
- the fibers are digested in a pulper 10 in water, while the fibers are still ground, the fiber lengths can be shortened and the curl of the fiber can be changed.
- the fiber lengths are in the range of 80mm to a few microns.
- the fillers and resins are added and dispersed until a homogeneous water-solid mixture is formed.
- the water content is usually a multiple of the solids content.
- the entire dispersion can now be pumped into a reservoir 30 and a new batch in the pulper 10 can be produced.
- Part of the dispersion is now pumped from the reservoir 30 - or alternatively directly from the pulper 10, if no subsequent batch is to be made - in the Molder 40 and mixed there again.
- Molders 40 - are molds that are flat or three-dimensional depending on the application - ie uneven - designed, for example, smooth or profiled. These forms are provided on the desired side with a sieve and to a pump - for example, a vacuum pump - connected so that they can pull off the water after sufficient mixing and the fiber-filler mixture is deposited on the side of the tools each with sieve.
- FIG. 4 shows a conically shaped friction lining.
- the conical design of the side surfaces and the bottom surface is caused by the three-dimensional design of the screen.
- the vertical side surfaces as well as the bottom surface are formed by the three-dimensional shape of the sieve.
- a profiling can be formed, for example, by webs in or on the screen and forms structures - such as groove pattern - from whose depth or width is not greater than 5 millimeters compared with the adjacent surrounding surface. If no profiling is provided, the surface in the context of this document is referred to as smooth. Depending on the fineness of the sieve net and the solids used, the sieve net structure may additionally be visible on the surface of the friction lining.
- the resulting product is now dewatered by pressing operations that run away or pressure controlled, and drying cycles, for example, in a drying station 50. Thereafter, it has sufficient stability to possibly be mechanically processed if necessary, for example by punching, grinding, cutting, milling, etc.
- the dispersion can also be supplemented during the pumping of a container - for example, the pulper 10 - in the next - for example, the reservoir 30 - via leads in the pipe system with other additives. These can be introduced in the pipe system via static mixers 20.
- the drying of the filter cake deposited on the sieves can be carried out in a drying station 50 after production.
- this can already be anticipated by the tools are connected in Molder 40 to a hot air generator and are heated.
- hot air should be passed through the tool and the product, so that the remaining water inside the product can be discharged and the drying can be driven not only on the surface, but in the entire workpiece.
- Another attachment 60 of the system is a coating system - shown in Figure 2 - for the surface coating with fillers.
- the filler is stored in a tank 100 below the conveyor belt 110 and pumped into the overflow basin 120.
- the product can be coated with the water-filler mixture and then dried in another drying station 70.
- FIGS. 3 and 4 show examples of the friction linings according to the invention.
- FIG. 4 shows a conically shaped friction lining.
- This invention is a formulation for friction material running in oil with the associated manufacturing method and a device for this purpose.
- the formulation consists mainly of a fiber-filler-resin mixture, which can be made into any shape by means of the manufacturing process. Therefore, not only flat parts can be produced, but also e.g. conically shaped. Furthermore, the parts can be made smooth or profiled surface.
- the friction material is suitable in the further processing for any kind of mechanical processing and therefore extremely flexible in the final geometry.
- Main applications include clutch linings for automatic transmissions, torque converters, dual-clutch transmissions and synchronizers.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112010002448T DE112010002448A5 (en) | 2009-06-12 | 2010-05-27 | friction material |
CN201080020666.3A CN102422046B (en) | 2009-06-12 | 2010-05-27 | Friction material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009024745 | 2009-06-12 | ||
DE102009024745.9 | 2009-06-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010142265A1 true WO2010142265A1 (en) | 2010-12-16 |
Family
ID=42656370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2010/000587 WO2010142265A1 (en) | 2009-06-12 | 2010-05-27 | Friction material |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN102422046B (en) |
DE (2) | DE102010021722A1 (en) |
WO (1) | WO2010142265A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014201464A1 (en) | 2013-02-21 | 2014-08-21 | Schaeffler Technologies Gmbh & Co. Kg | Method of manufacturing synchronizing ring of synchronizing device for transmission of motor vehicle, involves pressing paper slug into combination step and materially connecting with conical bearing surface |
US11850836B2 (en) | 2018-11-27 | 2023-12-26 | Schaeffler Technologies AG & Co. KG | Method and installation for producing a multi-layered wet friction material |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012097768A1 (en) | 2010-12-13 | 2012-07-26 | Schaeffler Technologies AG & Co. KG | Method for producing a friction element |
DE102011086523A1 (en) | 2010-12-13 | 2012-06-14 | Schaeffler Technologies Gmbh & Co. Kg | Process for producing a friction body |
EP2990679A1 (en) * | 2014-08-28 | 2016-03-02 | Ortlinghaus-Werke GmbH | Method for producing a lamella for a brake or coupling and lamella |
DE102015223893A1 (en) | 2015-12-01 | 2017-06-01 | Schaeffler Technologies AG & Co. KG | Wet running friction lining |
DE102015223898A1 (en) | 2015-12-01 | 2017-06-01 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Back pressure flap device, method for producing the dynamic pressure flap device and fan with ram pressure flap device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0640774A1 (en) * | 1993-08-31 | 1995-03-01 | Borg-Warner Automotive, Inc. | Friction material comprising powdered phenolic resin and method for making same |
US20020197448A1 (en) * | 2000-01-27 | 2002-12-26 | Booher Benjamin V. | Pultrusion method of making composite friction members |
WO2008070636A1 (en) * | 2006-12-01 | 2008-06-12 | Ftf, Llc | Variable-density preforms |
-
2010
- 2010-05-27 CN CN201080020666.3A patent/CN102422046B/en not_active Expired - Fee Related
- 2010-05-27 WO PCT/DE2010/000587 patent/WO2010142265A1/en active Application Filing
- 2010-05-27 DE DE102010021722A patent/DE102010021722A1/en not_active Withdrawn
- 2010-05-27 DE DE112010002448T patent/DE112010002448A5/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0640774A1 (en) * | 1993-08-31 | 1995-03-01 | Borg-Warner Automotive, Inc. | Friction material comprising powdered phenolic resin and method for making same |
US20020197448A1 (en) * | 2000-01-27 | 2002-12-26 | Booher Benjamin V. | Pultrusion method of making composite friction members |
WO2008070636A1 (en) * | 2006-12-01 | 2008-06-12 | Ftf, Llc | Variable-density preforms |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014201464A1 (en) | 2013-02-21 | 2014-08-21 | Schaeffler Technologies Gmbh & Co. Kg | Method of manufacturing synchronizing ring of synchronizing device for transmission of motor vehicle, involves pressing paper slug into combination step and materially connecting with conical bearing surface |
US11850836B2 (en) | 2018-11-27 | 2023-12-26 | Schaeffler Technologies AG & Co. KG | Method and installation for producing a multi-layered wet friction material |
Also Published As
Publication number | Publication date |
---|---|
DE102010021722A1 (en) | 2010-12-16 |
DE112010002448A5 (en) | 2012-08-09 |
CN102422046A (en) | 2012-04-18 |
CN102422046B (en) | 2014-12-31 |
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