Friction lining

• US 8,025,134 B2
• Filed: 02/06/2008
• Issued: 09/27/2011
• Est. Priority Date: 02/09/2007
• Status: Expired due to Fees

• Current Assignee: Miba Frictec GmbH (Peter Mitterbauer)
• Original Assignee: Miba Frictec GmbH (Peter Mitterbauer)
• Inventors: Tsioptsias, Zisis, Föge, Volker
• Primary Examiner(s): Rodriguez; Pamela
• Application Number:
  US12/012,955
• Publication Number:
  US 20080308365A1
• Time in Patent Office: 1,329 Days
• Field of Search: 188/251.A, 428/143, 428/144, 428/323, 428/408, 427/404, 427/383.1, 427/203, 427/204
• US Class Current: 188/251.00A
• CPC Class Codes: F16B 2/005 Means to increase the friction-coefficient
• CPC Class Codes: F16B 39/225 by means of a settable material
• CPC Class Codes: F16D 2200/0069 being characterised by their size
• CPC Class Codes: F16D 69/025 Compositions based on an organic binder
• CPC Class Codes: Y10T 428/24372 Particulate matter

Abstract

The invention describes a friction lining (4) comprising a binding agent matrix (5) and friction particles (6), which binding agent matrix (5) forms a coating with a pre-definable coating thickness. A proportion of the friction particles (6) selected from a range with a lower limit of 20% and an upper limit of 100%, by reference to the total quantity of the friction particles (6), has a diameter which is bigger than the coating thickness of the binding agent matrix (5).

Claims

1. Friction lining comprising a binding agent matrix and friction particles, which binding agent matrix forms a coating with a pre-definable coating thickness, wherein a proportion of the friction particles selected from a range with a lower limit of 20% and an upper limit of 100%, by reference to the total quantity of the friction particles, has a diameter that is bigger than the coating thickness of the binding agent matrix, wherein the coating of said binding agent matrix has an outer surface and a bottom surface, said friction particles extend out beyond the outer binding agent matrix surface and beyond the bottom binding agent matrix surface.

2. Friction lining according to claim 1, wherein the friction particles have a mean size selected from a range with a lower limit of 2 μ

m and an upper limit of 200 μ

m.

3. Friction lining according to claim 1, wherein the coating thickness of the binding agent matrix is selected from a range with a lower limit of 1 μ

m and an upper limit of 150 μ

m.

4. Friction lining according to claim 1, wherein the proportion of binding agent matrix on the friction lining is selected from a range with a lower limit of 5% by weight and an upper limit of 80% by weight.

5. Friction lining according to claim 1, wherein the coating of binding agent matrix has a first surface and a second surface lying opposite it and a proportion of the friction particles projects out beyond both the first and the second surface.

6. Friction lining according to claim 5, wherein a proportion of the friction particles extends through the entire coating thickness of the binding agent matrix.

7. Friction lining according to claim 1, wherein the surface lining of the friction particles on an outer surface of the friction lining is selected from a range with a lower limit of 3% by surface area and an upper limit of 45% by surface area.

8. Friction lining according to claim 1, wherein the friction lining also contains at least one other additive in a proportion selected from a range with a lower limit of 0.5% by weight and an upper limit of 10% by weight.

9. Friction lining according to claim 8, wherein several additives are contained in the friction lining in a total proportion of a maximum of 25% by weight.

10. Friction lining according to claim 1, wherein it is free of fibers.

11. Friction lining according to claim 1 wherein the friction particles have a spherical or nodal or approximately cuboid shape with a polygonal cross-section.

12. Friction lining according to claim 1 wherein the binding agent matrix is phenolic resin, which may or may not be modified, and the friction particles 6 are silicon carbide.

13. The friction lining according to claim 1 arranged to secure screw connections.

14. Friction component with a metal component body which has a functional surface for establishing a frictional grip with another friction component, and the functional surface is at least partly provided with a friction lining, wherein the friction lining comprising a binding agent matrix and friction particles which binding agent matrix forms a coating with a pre-definable coating thickness, wherein a proportion of the friction particles selected from a range with a lower limit of 20% and an upper limit of 100%, by reference to the total quantity of the friction particles has a diameter that is bigger than the coating thickness of the binding agent matrix, wherein the coating of said binding agent matrix has an outer surface and a bottom surface, said friction particles extend out beyond the outer binding agent matrix surface and beyond the bottom binding agent matrix surface forming micro-form fit between the metal component body and friction particles.

15. Friction component according to claim 14, wherein the friction component is a synchronizer ring, brake disc, brake pad, clutch disc, or a screw.

16. Friction unit comprising at least a first and a second friction component which can be moved into a friction grip with it, and both the first and the second friction component each have at least one functional surface for establishing the friction grip, and at least one of the functional surfaces is at least partially provided with a friction lining, wherein the friction lining comprising a binding agent matrix and friction particles which binding agent matrix forms a coating with a pre-definable coating thickness, wherein a proportion of the friction particles selected from a range with a lower limit of 20% and an upper limit of 100%, by reference to the total quantity of the friction particles has a diameter that is bigger than the coating thickness of the binding agent matrix, wherein the coating of said binding agent matrix has an outer surface and a bottom surface, said friction particles extend out beyond the outer binding agent matrix surface and beyond the bottom binding agent matrix surface forming micro-form fit between the metal component body and friction particles.

17. Friction unit according to claim 16, wherein the friction unit is a differential lock, dry or wet clutch, dry or wet brake, disc brake, holding brake, safety brake, hydrostatic drive or a screw connection.

18. The friction unit according to claim 16 arranged to transmit torques in applications involving dynamic friction.