METALLIC COMPONENT OF A ROLLING-ELEMENT BEARING OR A PLAIN BEARING HAVING A COATING AND A METHOD OF COATING THE COMPONENT

• US 20200131644A1
• Filed: 10/22/2019
• Published: 04/30/2020
• Est. Priority Date: 10/29/2018
• Status: Active Application

• Current Assignee: ABet SKF
• Original Assignee: ABet SKF
• Inventors: von Schleinitz, Thilo
• Application Number:
  US16/659,894
• Publication Number:
  US 20200131644A1
• Time in Patent Office: Days
• CPC Class Codes: C23C 24/04 Impact or kinetic deposition of particles
• CPC Class Codes: C23C 4/01 Selective coating, e.g. pattern coating, without pre-treatment of the material to be coated
• CPC Class Codes: C23C 4/12 characterised by the method of spraying
• CPC Class Codes: F16C 19/06 with a single row or balls
• CPC Class Codes: F16C 2204/50 Alloys based on zinc
• CPC Class Codes: F16C 2223/42 by spraying the coating material, e.g. plasma spraying
• CPC Class Codes: F16C 2300/14 Large applications, e.g. bearings having an inner diameter exceeding 500 mm
• CPC Class Codes: F16C 2300/42 corrosive, i.e. with aggressive media or harsh conditions
• CPC Class Codes: F16C 33/122 Multilayer structures of sleeves, washers or liners
• CPC Class Codes: F16C 33/14 Special methods of manufacture; Running-in
• CPC Class Codes: F16C 33/586 outside the space between the races, e.g. end faces or bore of inner ring
• CPC Class Codes: F16C 33/62 Selection of substances
• CPC Class Codes: F16C 33/64 Special methods of manufacture
• CPC Class Codes: F16C 33/7826 of the opposing surface cooperating with the seal, e.g. a shoulder surface of a bearing ring

Abstract

A method of coating a metallic component of a rolling-element bearing or a plain bearing having at least one non-sandblasted surface includes directly applying a first metal coating onto at least a portion of the non-sandblasted surface by a cold spray method, preferably at a pressure of more than 50 bar. Also a coated metallic component formed by the method.

Claims

1. A method comprising:

providing a metallic component of a rolling-element bearing or a plain bearing having at least one non-sandblasted surface; and

directly applying a first metal coating onto at least a portion of the at least one non-sandblasted surface by a cold spray method.

2. The method according to claim 1, wherein the cold spray method comprises applying the first metal coating at a pressure of more than 50 bar.

3. The method according to claim 2 including applying a second metal coating on the first metal coating using the cold spray method.

4. The method according to claim 2, wherein directly applying the first metal coating changes the shape of the metallic component.

5. The method according to claim 1, wherein the first metal coating is applied in a straight unbraked trajectory perpendicular to the non-sandblasted surface.

6. The method according to claim 1, wherein the cold spray method comprises adding a powdered metal to a volume of a gas and directing the gas and metal mixture toward the non-sandblasted surface at a pressure of greater than 50 bar.

7. A metallic bearing component having a metal coating applied by the method according to claim 1.

8. The method according to claim 1,

wherein the cold spray method comprises adding a powdered metal to a volume of a gas and directing the gas and metal mixture in a straight unbraked trajectory perpendicular to the non-sandblasted surface toward the non-sandblasted surface at a pressure of greater than 50 bar.

9. A metallic bearing component having a metal coating applied by the method according to claim 8.

10. A metallic component of a rolling-element or plain bearing comprising:

at least one non-sandblasted surface at least partially coated with a metal coating directly applied to the non-sandblasted surface using a cold spray method.

11. The metallic component according to claim 10, wherein the metal coating is applied at a pressure of more than 50 bar.

12. The metallic component according to claim 10, wherein the metal coating is a corrosion protection layer.

13. The metallic component according to claim 10, wherein the metal coating is configured as a first and at least one second layer that are applied one-over-the-other using the cold spray method.

14. The metallic component according to claim 10, wherein the metal coating is configured to change the shape of the metallic component.

15. The metallic component according to claim 10, wherein the metallic component includes compressive stresses.