Lead-free bimetallic sliding bearing

A technology of sliding bearings and bimetals, which is applied in the direction of bearing components, shafts and bearings, rolling resistance optimization, etc., and can solve problems such as increased wear, temperature rise, and test failure

Inactive Publication Date: 2010-08-18
ZHEJIANG CHANGSHENG SLIDING BEARINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the foreign MNMLE bearing company discloses CuSn8Ni1 lead-free bronze materials. We found through experimental analysis that in the friction and wear test, when the test conditions: under the condition of oil immersion lubrication, the pressure P = 7.0MPa, the speed V = 2.0m / s, the result The test lasted only 18 minutes, the wear increased and the temperature rose rapidly, and the test failed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1 is with 1.5mm thick high-quality carbon steel plate, on a surface of steel plate, one deck bronze powder is sintered by traditional process, and the weight percent composition of bronze powder is: Cu 89.69%; Sn 8.44%; Ni 1.30%; In 0.08 %; the balance is unavoidable impurities, and the particle size of the bronze powder is less than 100 μm. The material of the lead-free bimetallic bearing disclosed in this patent is prepared. Make various samples according to the following requirements, and measure the test data.

[0013] 1. Copper layer hardness: 69.0HB (specimen size 37mm×37mm×2mm)

[0014] 2. Compression deformation: (specimen size 10mm×10mm×2mm)

[0015] Positive pressure MPa

Compression deformation mm

100

0

200

0.002

250

0.006

300

0.007

[0016] 3. Test of bonding fastness between copper layer and steel plate (specimen size 150mm×20mm×2mm)

[0017] The vise clamps the test piece...

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PUM

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Abstract

The invention discloses a lead-free bimetallic sliding bearing, aiming to provide another bimetallic sliding bearing which has the technical performance index equal to that of lead-bearing bimetallic sliding bearings, contains no lead or bismuth and is prepared by lead-free copper alloy bearing materials. The technical scheme is as follows: the bimetallic sliding bearing is prepared by conventionally rolling and molding the bimetallic sliding bearing sheets; the bimetallic sliding bearing sheets take steel as the base material; and a layer of alloy copper powder is sintered on one surface of the base material to prepare the bimetallic sliding bearing sheets which are characterized in that the alloy copper powder comprises the following components in percentage by mass: 5-12% of Sn, 1-2% of Ni, 0.05-0.20% of In and the balance Cu and inevitable impurities. The invention provides another broad way for manufacturing the lead-free bimetallic sliding bearing and has positive effects on environmental protection and human health.

Description

technical field [0001] The invention relates to a sliding bearing, in particular to another lead-free bimetallic sliding bearing. Background technique [0002] With high-quality carbon steel as the matrix and sintered bronze powder on the surface, it is suitable for swinging and rotating motions under heavy loads and low speeds. It has the characteristics of low friction coefficient, good wear resistance, long service life, and good anti-seizure performance. Various types of oil grooves, oil storage pits, oil pockets, etc. can be processed on the surface of the copper alloy metal layer according to the needs of the working conditions, so as to be suitable for occasions where it is impossible or difficult to refuel. Widely used in mining machinery, automobiles, construction machinery, agricultural machinery, steel rolling machinery, etc. Traditional bimetallic sliding bearings are made by directly sintering bronze powder on a flat steel plate to form a bimetallic bearing mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/12F16C33/08C22C9/02
CPCY02T10/865
Inventor 孙志华
Owner ZHEJIANG CHANGSHENG SLIDING BEARINGS
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