Composite material for sliding bearing and preparation method thereof

A technology of sliding bearings and babbitt alloys, which is applied to bearings, bearing components, shafts and bearings, etc., can solve the problems of surface compliance, mosaic running-in performance is not as good as babbitt alloys, and easily damaged shafts, etc., to achieve improved tribological properties , prevent brittle interface, long service life

Inactive Publication Date: 2006-07-12
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

) Another type of bearing alloy is composed of a hard matrix and soft particles. Its load-carrying capacity is higher th

Method used

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Embodiment 1

[0024] The composite sliding bearing material of the present invention includes common babbitt alloy and carbon nanotube, wherein the common babbitt alloy is a matrix, and the carbon nanotube is a reinforcing body.

[0025] The common babbitt alloys mentioned above are lead or tin-based alloys.

[0026] In the preparation method of the composite sliding bearing material of the present invention, the ordinary Babbitt alloy matrix and the carbon nanotube reinforcement are composited together through electrodeposition.

[0027] Above-mentioned electrodeposition method comprises the following steps:

[0028] 1) Perform pre-plating treatment on the steel back of ordinary sliding bearings;

[0029] 2) Plating in the plating solution of the electroplating tank.

[0030] The pre-plating treatment of the above ordinary sliding bearing steel back is to use 10g / L metal cleaning agent to clean in ultrasonic for several minutes, and then rinse with tap water.

[0031] In this embodiment...

Embodiment 2

[0037] This embodiment is the same as Embodiment 1, except that the current density of the plating process is 2A / dm 2 , the plating time is 35 minutes, the coating thickness of bearing material can be obtained: 180μm, hardness 28.6HB.

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Abstract

The invention relates to a composite sliding bearing material and relative preparation method. It comprises a common babbit and carbon nanometer pipe. Wherein, the common babbit is the basic material and the carbon nanometer pipe is a reinforced element. Said common babbit is lead or tin alloy. The preparation method comprises: the common babbit basic material and the carbon nanometer pipe reinforced element are compounded via electric deposition. The electric deposition method comprises following steps: (1) processing plating-before process on the common sliding bearing steel back; (2) plating in the plating solution in the electric plating groove. The plating-before process is using 10g/L metal cleaning solution to wash in ultrasonic for several minutes to be washed via tap water. And the plating solution comprises the components as: Sn(BF4)2: 8-12g/L; Pb(BF4)2: 3-6g/L; HBF: 350-420g/L; glutin: 4g/L and carbon nanometer pipe: 0.5-1g/L. the invention ahs high carrying ability, long service life, and simple producing method.

Description

1. Technical field: [0001] The invention is a composite sliding bearing material and a preparation method thereof, belonging to the innovative technology of the sliding bearing material and the preparation method thereof. 2. Background technology: [0002] At present, sliding bearing alloys are divided into two categories, namely "soft matrix plus hard point type" and "hard matrix plus soft point type". The former has excellent tribological properties, poor bearing capacity and low high temperature strength, such as Babbitt alloy. , it is a tin-based or lead-based soft alloy with anti-friction properties, and its hardness is only HB13-35. Due to its excellent tribological properties, it is widely used in bearing materials for internal combustion engines and automobile engines. The hard phase particles are evenly distributed on the soft phase matrix. The soft phase matrix makes the alloy have very good mosaicability, compliance and anti-seizure property. A small gap is forme...

Claims

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Application Information

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IPC IPC(8): F16C33/12F16C33/14C25D7/10
Inventor 揭晓华
Owner GUANGDONG UNIV OF TECH
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