Supported ceramic guide roller

• US 4,876,875 A
• Filed: 12/04/1987
• Issued: 10/31/1989
• Est. Priority Date: 12/04/1987
• Status: Expired due to Term

• Current Assignee: CoorsTek Incorporated (Trelleborg AB)
• Original Assignee: Coors Porcelain Co. (Molson Coors Beverage Co.)
• Inventors: Carscallen, Gregory A., Bruggeman, Rudyard J.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Katz, Steven B.
• Application Number:
  US07/130,109
• Time in Patent Office: 697 Days
• Field of Search: 72/199, 72/365, 72/366, 72/250, 72/200, 72/202, 29/130, 29/132, 29/125
• US Class Current: 72/199
• CPC Class Codes: B21B 2003/005 Copper or its alloys
• CPC Class Codes: B21B 27/035 Rolls for bars, rods, rounds, tubes, wire or the like
• CPC Class Codes: B21B 39/165 Guides or guide rollers for rods, bars, rounds, tubes B21B39/28 takes precedence; Aligning guides
• CPC Class Codes: F16C 13/006 Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
• CPC Class Codes: F16C 2322/12 Rolling apparatus, e.g. rolling stands, rolls

Abstract

A supported ceramic roller and a method for production and use thereof is provided, particularly as a guide roller in a non-ferrous rolling mill. A ceramic roller member is attached to a backing member, preferably metallic, by an adhesive which has the characteristic of acting as a thermal/mechanical stress barrier. The sidewalls of the ceramic roller member extend radially outward of the support member.

Claims

1. A ceramic roller comprising:

an annulus-shaped member comprising a first ceramic material and having first and second side surfaces and outer and inner circumferential surfaces;

a support member comprising a second material, different from said first ceramic material and having a support surface and being positioned such that said support surface is spaced from said inner surface to define a first space therebetween, wherein at least a portion of at least one of said first side surface and said second side surface extends radially outward from said support member;

adhesive means comprising an epoxy in said first space for adhering to said inner surface and said support surface and for at least partially relieving stress on said annulus-shaped member.

2. A ceramic roller, as claimed in claim 1, further comprising bearing means for rotational mounting operably attached to said support member.

3. A roller, as claimed in claim 1, wherein:

said first ceramic material comprises zirconia.

4. A roller, as claimed in claim 1, wherein said second material comprises a metal.

5. A roller, as claimed in claim 1, wherein said second material comprises steel.

6. A roller, as claimed in claim 1, wherein:

said annulus-shaped member has at least one groove on said inner surface.

7. A process for providing a ceramic roller, comprising:

providing an annulus-shaped member comprising a first ceramic material and having first and second side surfaces and outer and inner circumferential surfaces;

providing a support member comprising a second material different from said ceramic material and having a support surface;

adhering said support member to said annulus-shaped member using adhesive means comprising an epoxy between said support member and said annulus-shaped member to maintain said support surface in a position such that at least a portion of at least one of said first side surface and said second side surface extends radially outward from said support member, wherein at least a portion of said adhesive means is positioned between said support member and said annulus-shaped member to provide a thermal/mechanical stress barrier between said support member and said annulus-shaped member.

8. A process, as claimed in claim 7, wherein:

said first ceramic material comprises zirconia.

9. A process, as claimed in claim 7, wherein:

said second material comprises a metal.

10. A process, as claimed in claim 7, wherein:

said second material comprises steel.

11. A process, as claimed in claim 7, wherein:

said step of providing an annulus-shaped member comprises forming at least one groove on said inner circumferential surface.

12. A process, as claimed in claim 7, further comprising:

press-fitting bearing means for rotational mounting to attach said bearing means to said support roller.

13. A ceramic roller comprising:

an annulus-shaped member comprising zirconia having first and second side surfaces and outer and inner circumferential surfaces and having at least one groove on said inner surface;

a support member comprising steel, having a support surface and being positioned such that such support surface is spaced from said inner surface to define a first space therebetween, wherein said first and second side surfaces extend radially outward from said support member;

an epoxy material in said first space for adhering said inner surface to said support surface and for providing a thermal/mechanical stress barrier between said support member and said annulus-shaped member.

14. A process useful during rolling of a deformable material comprising:

providing first and second rollers, each of said first and second rollers comprising;

an annulus-shaped member comprising a first ceramic material and having first and second side surfaces and outer and inner circumferential surfaces;

a support member comprising a second material different from said first ceramic material and having a support surface and being positioned such that said support surface is spaced from said inner surface, to define a first space therebetween, wherein at least a portion of at least one of said first and second side surfaces extends radially outward from said support member;

adhesive means comprising an epoxy in said first space for adhering said inner surface to said support surface and for at least partially relieving stress on said annulus-shaped member;

rotatably mounting said first and second rollers such that aid outer circumferential surface of said first roller is spaced from said outer circumferential surface of said second roller to define a second space therebetween;

moving a portion of the deformable material through said second space to contact said outer circumferential surfaces of said first and second rollers;

heating said first and second rollers wherein stress is produced by differential thermal expansion; and

relieving said stress using aid adhesive means.

15. A ceramic roller comprising:

an annulus-shaped member comprising a first ceramic material and having first and second side surfaces and outer and inner circumferential surfaces;

a support member comprising a second material, different from said first ceramic material and having a support surface and being positioned such that said support surface is spaced from said inner surface to define a first space therebetween, wherein at least a portion of at least one of said first side surface and said second side surface extends radially outward from said support member;

adhesive means comprising an epoxy in said first space for adhering to said inner surface and said support surface and for at least partially relieving stress on said annulus-shaped member;

wherein said ceramic roller is capable of withstanding operating temperatures of at least about 600°

C.

16. A process for providing a ceramic roller, comprising:

providing an annulus-shaped member comprising a first ceramic material and having first and second side surfaces and outer and inner circumferential surfaces;

providing a support member comprising a second material different from said ceramic material and having a support surface;

adhering said support member to said annulus-shaped member using adhesive means comprising an epoxy between said support member and said annulus-shaped member to maintain said support surface in a position such that at least a portion of at least one of said first side surface and said second side surface extends radially outward from said support member, wherein at least a portion of said adhesive means is positioned between said support member and said annulus-shaped member to provide a thermal/mechanical stress barrier between said support member and said annulus-shaped member; and

employing said ceramic roller in an environment wherein temperatures exceed at least about 600°

C.

17. A ceramic roller comprising:

an annulus-shaped member comprising zirconia having first and second side surfaces and outer and inner circumferential surfaces and having at least one groove on said inner surface;

a support member comprising steel, having a support surface and being positioned such that such support surface is spaced from said inner surface to define a first space therebetween, wherein said first and second side surfaces extend radially outward from said support member;

an epoxy material in said first space for adhering said inner surface to said support surface and for providing a thermal/mechanical stress barrier between said support member and said annulus-shaped member;

wherein said ceramic roller is capable of operating at temperatures greater than about 600°

C.

18. A process useful during rolling of a deformable material comprising:

providing first and second rollers, each of said first and second rollers comprising;

an annulus-shaped member comprising a first ceramic material and having first and second side surfaces and outer and inner circumferential surfaces;

a support member comprising a second material different from said first ceramic material and having a support surface and being positioned such that said support surface is spaced from said inner surface, to define a first space therebetween, wherein at least a portion of at least one of said first and second side surfaces extends radially outward from said support member;

adhesive means comprising an epoxy in said first space for adhering said inner surface to said support surface and for at least partially relieving stress on said annulus-shaped member;

rotatably mounting said first and second rollers such that said outer circumferential surface of said first roller is spaced from said outer circumferential surface of said second roller to define a second space therebetween;

moving a portion of the deformable material through said second space to contact said outer circumferential surfaces of said first and second rollers;

heating said first and second rollers to a temperature above about 600°

C. wherein stress is produced by differential thermal expansion; and

relieving said stress using said adhesive means.

19. A process useful during rolling of a deformable material comprising:

providing first and second rollers, each of said first and second rollers comprising;

an annulus-shaped member comprising a first ceramic material and having first and second side surfaces and outer and inner circumferential surfaces;

a support member comprising a second material different from said first ceramic material and having a support surface and being positioned such that said support surface is spaced from said inner surface, to define a first space therebetween, wherein at least a portion of at least one of said first and second side surfaces extends radially outward from said support member;

adhesive means comprising ana epoxy in said first space for adhering said inner surface to said support surface and for at least partially relieving stress on said annulus-shaped member;

rotatably mounting said first and second rollers such that said outer circumferential surface of said first roller is spaced from said outer circumferential surface of said second roller to define a second space therebetween;

moving a portion of the deformable material through said second space to contact said outer circumferential surfaces of said first and second rollers;

introducing stress on said first and second rollers wherein said stress is produced by mechanical force; and

relieving said stress using said adhesive means.