Method of manufacturing a strip for a bearing
AssigneesMahle International GmbH, Mahle Engine Systems UK Ltd, Mahle Metal Leve S/A
InventorsSylvia Campbell, Paulo R. Vieira De Morais
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Abstract
A method of manufacturing a strip for a bearing may comprise roll-bonding a bearing layer comprising a tin-free aluminium alloy directly to a base layer to form a bimetal and heat-treating the bimetal at a temperature below a recrystallization initiation temperature of the aluminium alloy. A strip for a bearing manufactured using the method, and a bearing having a strip manufactured using the method, are also provided.
Claims21
A method of manufacturing a strip for a bearing, the method comprising:
- roll-bonding a bearing layer comprising a tin-free aluminium alloy directly to a base layer to form a bimetal;
- and
- heat-treating the bimetal at a temperature below a recrystallization initiation temperature of the aluminium alloy.
(canceled)
A strip for a bearing, the strip comprising:
- a base layer;
- and
- a bearing layer comprising a tin-free aluminium alloy, wherein the bearing layer is directly roll-bondable to the base layer to form a bimetal;
- wherein the bimetal is heat-treatable at a temperature below a recrystallization initiation temperature of the aluminium alloy, so that a bearing comprising the strip satisfies at least one of the following:
- at a load of 110 MPa, a fatigue test pass rate of at least 90%;
- a fatigue load of at least 120 MPa;
- a hardness loss after 500 hours in a soak test at 160° C. is less than 20%.
The strip for a bearing according to claim 20, wherein the aluminium alloy comprises:
- between 0.5 wt % and 2.0 wt % Mn;
- and
- between 0.5 wt % and 2.0 wt % Mg.
A strip for a bearing, the strip comprising:
- a base layer;
- and
- a bearing layer comprising a tin-free aluminium alloy, wherein the bearing layer is directly roll-bondable to the base layer to form a bimetal;
- wherein the bimetal is heat-treatable at a temperature below a recrystallization initiation temperature of the aluminium alloy.
Dependencies are inferred from the claim text.