Claims
- 1. A method for the production of brake discs having friction areas made of ceramic materials, which comprises:
placing at least one ceramic portion in a diecasting mold; and joining the at least one ceramic portion with molten metals by casting under pressure into a rotationally symmetrical metal body containing at least one ceramic segment disposed symmetrically relative to an axis of rotation of the metal body and jutting out over at least one surface of the metal body perpendicular to the axis.
- 2. The method according to claim 1, wherein the at least one ceramic segment is a composite segment.
- 3. The method according to claim 1, wherein the at least one ceramic portion is a ceramic ring disc.
- 4. The method according to claim 1, wherein the at least one ceramic portion is at least two ceramic portions disposed as parallel ring discs.
- 5. The method according to claim 3, wherein the ring discs have protrusions facing towards the axis for improving a frictional connection between metal and ceramic.
- 6. The method according to claim 4, wherein the ring discs have protrusions facing towards the axis for improving a frictional connection between metal and ceramic.
- 7. The method according to claim 3, wherein the ring discs have recesses facing away from the axis for improving a frictional connection between metal and ceramic.
- 8. The method according to claim 4, wherein the ring discs have recesses facing away from the axis, for improving a frictional connection between metal and ceramic.
- 9. The method according to claim 1, which further comprises forming a portion of the metal body close to the axis as a pot-shaped hub.
- 10. The method according to claim 4, which further comprises forming metal portions between the two discs causing a propeller effect and creating an air current between the two discs for cooling the discs with internal ventilation.
- 11. The method according to claim 4, which further comprises forming metal portions between the two discs causing an impeller effect and creating an air current between the two discs for cooling the discs with internal ventilation.
- 12. A brake disc having friction areas made of ceramic materials, comprising:
at least one ceramic portion; and molten metals cast with the at least one ceramic portion into a rotationally symmetrical metal body containing at least one ceramic segment disposed symmetrically relative to an axis of rotation of the metal body and jutting out over at least one surface of the metal body perpendicular to the axis.
- 13. The brake disc according to claim 12, wherein said at least one ceramic segment is a composite segment.
- 14. The brake disc according to claim 12, wherein the at least one ceramic portion is a ceramic ring disc.
- 15. The brake disc according to claim 14, wherein said at least one ceramic segment is a composite segment.
- 16. The brake disc according to claim 12, wherein the at least one ceramic portion is at least two ceramic portions disposed as parallel ring discs.
- 17. The brake disc according to claim 16, wherein said at least two ceramic segments are a composite segment.
- 18. The brake disc according to claim 16, including metal portions disposed between said two discs causing a propeller effect to generate an air current between said two discs for cooling said discs with internal ventilation.
- 19. The brake disc according to claim 16, including metal portions disposed between said two discs causing an impeller effect to generate an air current between said two discs for cooling said discs with internal ventilation.
Priority Claims (1)
Number |
Date |
Country |
Kind |
199 29 358.9 |
Jun 1999 |
DE |
|
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation of copending International Application No. PCT/EP00/05548, filed Jun. 16, 2000, which designated the United States.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/EP00/05548 |
Jun 2000 |
US |
Child |
09793341 |
Feb 2001 |
US |