Method for producing a brake disk and a brake disk

Patent metadata

Field	Value
Publication number	US-2016025167-A1
Application number	US-201514806306-A
Country	US
Kind code	A1
Filing date	Jul 22, 2015
Priority date	Jul 24, 2014
Publication date	Jan 28, 2016
Grant date	—

Abstract

The disclosure relates to a brake disk and a method for producing a brake disk. The method may include roughening at least some area(s) of a surface of the main body, forming a metal coating on at least some area(s) of the roughened region of the surface of the main body, applying an enamel slip to at least some area(s) of the surface of the main body, drying the applied enamel slip, and heating the main body to form the enamel coating and to join the metal coating metallurgically to the main body. The brake disk may include a main body having an enamel coating arranged at least in some area(s). A metal coating may additionally be formed on the surface of the main body, at least in some area(s), wherein the metal coating is joined metallurgically to the main body.

First claim

What is claimed is:

1 . A method for producing a brake disk, comprising:
roughening at least some area or areas of a surface of a main body of the brake disk; forming a metal coating on at least some area or areas of the roughened area or areas of the surface of the main body; applying an enamel slip to at least some area or areas of the surface of the main body; drying the applied enamel slip; and heating the main body provided with the metal coating and the dried enamel slip to form an enamel coating and to join the metal coating metallurgically to the main body.

2 . The method of claim 1 , wherein the metal coating is formed by a thermal spraying method.

3 . The method of claim 1 , wherein the metal coating is formed in a layer thickness of from 150 μm to 350 μm.

4 . The method of claim 1 , wherein an anchoring thread is introduced into the surface and/or the surface is pretreated by corundum blasting in order to roughen the main body.

5 . The method of claim 1 , wherein the drying of the applied enamel slip is carried out in a furnace at 90° C.

6 . The method of claim 1 , wherein the heating of the main body provided with the metal coating and the dried enamel slip is carried out in a temperature range of from 800° C. to 900° C. using a protective gas.

7 . The method of claim 1 , wherein the metal coating is finished mechanically.

8 . The method of claim 1 , wherein the metal coating includes an alloy of Fe or FeCr.

9 . The method of claim 1 , wherein the metal coating includes FeCrBSi.

10 . The method of claim 1 , wherein heating step is carried out at a melting point temperature of the enamel slip.

11 . The method of claim 1 , wherein the metal coating is formed on a friction surface of a friction ring of the brake disk.

12 . The method of claim 1 , wherein the enamel slip is applied to a transitional region of the brake disk between a friction ring and a projecting connecting surface of the main body.

13 . The method of claim 1 , wherein the metal coating is formed by a high-velocity flame spraying process.

14 . The method of claim 1 , wherein the heating step is carried out at a temperature below a melting temperature of the metal coating and the metal coating is joined metallurgically to the main body by diffusion.

15 . A brake disk for a vehicle, comprising:
a main body, on a surface of which an enamel coating is formed, at least in some area or areas; and a metal coating additionally formed on the surface of the main body, at least in some area or areas, wherein the metal coating is joined metallurgically to the main body.

16 . The brake disk of claim 15 , wherein the metal coating has an adhesive strength of greater than 70 MPa in relation to the surface of the main body.

17 . The brake disk of claim 15 , wherein the metal coating is formed at least on friction surfaces of a friction ring of the main body which face away from one another.

18 . The brake disk of claim 15 , wherein the main body is formed of cast iron and the metal coating is formed of FeCrBSi.

19 . The brake disk of claim 15 , wherein the enamel coating is formed on a transitional region of the brake disk between a friction ring and a projecting connecting surface of the main body.

20 . A method comprising:
roughening an area of a surface of a cast iron brake disk main body; forming a FeCrBSi metal coating on the roughened area; applying an enamel slip to an area of the surface of the main body; drying the applied enamel slip; and heating the FeCrBSi metal coating and the dried enamel slip to form an enamel coating and to join the FeCrBSi metal coating metallurgically to the main body.

Assignees

• Ford Global Tech Llc

Inventors

• Broda Maik
• Grabiec Tomasz Pawel
• Verpoort Clemens Maria

Classifications

• F16D65/127 Primary

  characterised by properties of the disc surface; Discs lined with friction material · CPC title

• C23C4/18

  After-treatment · CPC title

• F16D2250/0046

  Coating · CPC title

• C23C4/08 Primary

  containing only metal elements (C23C4/073 takes precedence) · CPC title

• C23C4/02

  Pretreatment of the material to be coated, e.g. for coating on selected surface areas · CPC title