Brake disk and method for producing a brake disk

Patent metadata

Field	Value
Publication number	US-11339841-B2
Application number	US-201916560108-A
Country	US
Kind code	B2
Filing date	Sep 4, 2019
Priority date	Sep 4, 2018
Publication date	May 24, 2022
Grant date	May 24, 2022

Abstract

A brake disk for a wheel brake of a land vehicle includes a main body formed from gray cast iron. The main body has at least one axial friction side, at least one anti-corrosion layer applied to the axial friction side, and at least one anti-abrasion layer applied to the anti-corrosion layer. The anti-corrosion layer is a duplex steel layer that provides a cost-effective coating for the brake disk and enables improved corrosion resistance. The anti-abrasion layer is wear resistant and is provided by a SiC material containing at least one oxidic or metallic binder, or by an iron-based alloy having a vanadium carbide reinforcement, a niobium carbide reinforcement, a boron carbide reinforcement, a chromium carbide reinforcement or combinations thereof.

First claim

What is claimed is:

1. A brake disk for a wheel brake of a land vehicle comprising:
a main body formed from gray cast iron and having at least one axial friction side;
at least one anti-corrosion layer applied to the axial friction side, wherein the at least one anti-corrosion layer is based on iron and has a chromium content of between 18% by weight and 30% by weight, a nickel content of between 1% by weight and 8% by weight, a molybdenum content of at most 4.5% by weight, a copper content of at most 3% by weight and a carbon content of at most 0.03% by weight; and
at least one anti-abrasion layer applied to the anti-corrosion layer, wherein the anti-corrosion layer is produced from a duplex steel.

2. The brake disk according to claim 1 , wherein the at least one anti-corrosion layer has a carbide reinforcement.

3. The brake disk according to claim 2 , wherein the carbide reinforcement is at least one of a niobium carbide reinforcement and a vanadium carbide reinforcement.

4. The brake disk according to claim 1 , wherein the at least one anti-abrasion layer is produced from a SiC material containing at least one oxidic or metallic binder.

5. The brake disk according to claim 4 , wherein the SiC material is SiC particles with an approximate size of 1 μm surrounded with the at least one oxidic or metallic binder.

6. The brake disk according to claim 1 , wherein the at least one anti-abrasion layer has a carbide reinforcement.

7. The brake disk according to claim 1 , wherein the at least one anti-abrasion layer is produced from an iron-based alloy having a vanadium carbide reinforcement or a niobium carbide reinforcement or a boron carbide reinforcement or a chromium carbide reinforcement.

8. The brake disk according to claim 1 , wherein the at least one anti-abrasion layer is produced from an iron-based alloy with a niobium content of more than about 8% by weight.

9. The brake disk according to claim 1 , wherein the at least one anti-abrasion layer is produced from an iron-based alloy with a chromium content of more than about 17% by weight and a boron content of at least 2% by weight.

10. The brake disk according to claim 1 , wherein the at least one anti-abrasion layer is produced from an iron-based alloy with chromium carbides.

11. A brake disk for a wheel brake of a land vehicle, the brake disk comprising:
a main body formed from gray cast iron and having at least one axial friction side;
at least one anti-corrosion layer applied to the axial friction side, wherein the at least one anti-corrosion layer is based on iron and has a chromium content of between 18% by weight and 30% by weight, a nickel content of between 1% by weight and 8% by weight, a molybdenum content of at most 4.5% by weight, a copper content of at most 3% by weight and a carbon content of at most 0.03% by weight; and
at least one anti-abrasion layer comprising a carbide reinforcement applied to the anti-corrosion layer.

Assignees

• Ford Global Tech Llc

Inventors

• Rettig Marc Oliver
• Grochowicz Jaroslaw
• Grabiec Tomasz Pawel
• Verpoort Clemens Maria
• Wank Andreas
• Hitzek Alexander
• Schmengler Christian
• Müller-Roden Karin
• Kaesgen Klaus

Classifications

• F16D65/127

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

• C23C28/021

  including at least one metal alloy layer · CPC title

• F16D2065/132

  layered · CPC title

• C23C4/129

  Flame spraying · CPC title

• C22C38/42 Primary

  with copper · CPC title