Method for producing a brake disk and a brake disk

Patent metadata

Field	Value
Publication number	US-10001181-B2
Application number	US-201514806306-A
Country	US
Kind code	B2
Filing date	Jul 22, 2015
Priority date	Jul 24, 2014
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

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 comprising:
roughening an area of a friction surface of a brake disk;
forming a metal coating having inner and outer edges on the roughened area;
applying an enamel slip to a transitional region of the brake disk between the metal coating inner edge and an inner opening of the brake disk;
drying the applied enamel slip; and
heating the dried enamel slip to form an exposed enamel coating.

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 friction surface.

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 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 by a high-velocity flame spraying process.

12. A vehicle brake disk comprising:
a cast iron main body having a friction surface including a roughened area;
a metal coating having inner and outer edges and formed on the roughened area and metallurgically joined to the roughened area; and
an exposed enamel coating formed on a transition region of the cast iron main body between the metal coating inner edge and an inner opening of the cast iron main body.

13. The brake disk of claim 12 , wherein the metal coating has an adhesive strength of greater than 70 MPa in relation to the roughened area.

14. The brake disk of claim 12 , wherein the metal coating is formed of FeCrBSi.

15. The method of claim 1 , wherein the friction surface is pretreated by corundum blasting in order to rough the area of the friction surface.

16. The method of claim 1 , wherein the metal coating is formed directly on the roughened area.

17. The method of claim 1 , wherein the exposed enamel coating is formed on a hat of the brake disk main body.

18. The method of claim 12 , wherein the transition region is on a hat of the brake disk.

19. The method of claim 12 , wherein the metal coating includes an alloy of Fe or FeCr.

20. The method of claim 12 , wherein the metal coating is formed in a layer thickness of from 150 μm to 350 μm.

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

• F16D2250/0053

  Hardening · 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

• F16D2250/0046

  Coating · CPC title