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Method for manufacturing strip for bearing

A strip and bearing technology, which is used in the manufacture of bearing strips, the manufacture of bimetal strips containing Wuxi aluminum alloy, and can solve the problem that aluminum alloy bearings cannot be used.

Pending Publication Date: 2022-06-17
MAHLE ENGINE SYST UK +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the technical advantages of overlay-coated bearings are well documented, even with polymer overlays, aluminum alloy bearings cannot be used reliably in more demanding applications with average specific loads greater than 90MPa

Method used

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  • Method for manufacturing strip for bearing
  • Method for manufacturing strip for bearing
  • Method for manufacturing strip for bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0085] figure 1 A portion of a bimetallic bearing 100 is shown, including: a backing or base layer 102, a holding layer 104 of a soft phase-free aluminum alloy, and a polymer cover or running layer 106.

[0086] The base layer 102 is made of steel and may optionally contain up to about 1 wt % copper. Bearing 100 does not include an intermediate layer because the aluminum alloy of holding layer 104 is roll bonded directly to the steel of base layer 102 .

[0087] The surface of the support layer 104 of the tape may be coated 308 with a polymer cover layer 106 . The strip can be bent to form at least part of the bearing, for example as figure 1 Half bearing pads of bimetal bearing 100 shown.

[0088] A suitable polymeric cover layer 106 may be as described in GB0822346A. The polymer cover layer 106 may comprise polyimide / amide plastic and / or fluoropolymer.

[0089] The aluminum alloy is a standard commercially available aluminum alloy of the wrought aluminum-manganese serie...

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PUM

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Abstract

A method of manufacturing a strip for a bearing includes directly roll-bonding a support layer comprising a tin-free aluminum alloy to a substrate layer to form a bimetal; and heat treating the bimetal at a temperature below the recrystallization initiation temperature of the aluminum alloy. A strip for a bearing manufactured using the method and a bearing having a strip manufactured using the method are also provided.

Description

technical field [0001] The present invention relates to a method for manufacturing a bearing strip. [0002] The method is particularly suitable for making bimetallic strips comprising tin-free aluminum alloys. [0003] The present invention also relates to a bearing strip produced by the method. [0004] The invention also relates to a bearing comprising said strip. Background technique [0005] High-power internal combustion engines often use crankshaft bearings, including copper- or aluminum-based bearing alloys, which are joined to a backing or base material, such as a mild steel backing. The running surface of the bearing, ie the surface facing the crankshaft journal surface of the engine, usually has a so-called covercoat or sliding layer. The sliding layer may be a metal layer including, for example, lead, tin, bismuth, silver, copper alloys or aluminum alloys. Alternatively, the sliding layer material may be a non-metallic polymeric material, including a syntheti...

Claims

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Application Information

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IPC IPC(8): B21C37/02C21D8/02C22C21/00C22C21/06C22C21/08C22F1/04C22F1/047B32B37/10B32B38/00B32B37/00
CPCB21C37/02C21D8/0247C22C21/00C22C21/06C22C21/08C22F1/04C22F1/047B32B37/10B32B38/00B32B37/00B32B38/0036B32B2037/243F16C33/06F16C2220/44F16C2226/36F16C2202/04F16C2204/20F16C33/14F16C33/121F16C33/125F16C2360/22C21D9/40B21B2001/383
Inventor 西尔维娅·坎贝尔保罗·罗伯托·维埃拉·德·莫赖斯
Owner MAHLE ENGINE SYST UK
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