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US 2011/0226580 A1Published application
Thixomolded core plates
AssigneeBorgWarner Inc.
InventorsMartin P. Keating, Michael Roche
Life of this patent
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Abstract
One embodiment includes a friction plate and method of manufacture thereof wherein the friction plate is fabricated from a thixomolded magnesium or titanium material or alloy thereof, which is lighter than comparable steel friction plates.
Claims15
A friction plate for friction clutch modules for use in vehicle transmissions comprising:
- an annular plate comprising a thixomolded material comprising at least one of magnesium, titanium or alloys thereof;
- and
- a friction facing connected with said core plate.
A method of manufacturing a friction plate comprising:
- providing a mold cavity;
- placing a friction facing within said mold cavity;
- and
- injecting said mold cavity with a thixomolded material comprising at least one of magnesium, titanium or alloys thereof, forming said core plate's geometry, and thereby connecting said friction facing with a core plate.
1 more element
A method of manufacturing a friction plate comprising:
- Providing a mold cavity maintained at a mold temperature between 350-480° F.;
- placing a friction facing within said mold cavity;
- and
- injecting a thixomold magnesium material at a temperature between 1040-1080° F. and at a laminar flow rate within said mold cavity to form said core plates so that the friction facing is connected to the core plate and wherein the injected magnesium material has globular dendrites.
1 more element
Dependencies are inferred from the claim text.