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Method for preparing solid self-lubricating material

A solid self-lubricating, raw material technology, applied in the direction of coating, etc., can solve the problems of limiting the strength and service life of self-lubricating parts, process equipment, process parameters, uneven particle size of metal powder, etc., to ensure compatibility and Compactness, simple preparation process, and the effect of improving utilization rate

Inactive Publication Date: 2008-08-06
BEIJING CISRI GAONA TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method solves the problem of large porosity of the material to a certain extent and enhances the service strength of the parts. However, this method has very strict requirements on the process equipment and process parameters, and the yield of the prepared coating powder is low. The particle size of the metal powder in the layer is not uniform and the combination is not dense enough, which also limits the strength and service life of self-lubricating parts

Method used

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  • Method for preparing solid self-lubricating material
  • Method for preparing solid self-lubricating material
  • Method for preparing solid self-lubricating material

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Embodiment Construction

[0029] According to the chemical composition and preparation method of the raw materials used in the present invention, 6 batches of solid self-lubricating materials were prepared. According to different chemical components, they were fully mixed, and 6 batches of self-lubricating materials with different properties were prepared by using different carbonyl pyrolysis, forming and sintering process parameters. The chemical composition of the 6 batches is shown in Table 1, the process parameters of carbonyl thermal dissociation and forming sintering are shown in Table 2, and Table 3 lists the properties of the 6 batches of self-lubricating materials. The performance of the solid self-lubricating material obtained by the method is listed in Table 3, the serial number is 7#, and the embodiments of the present invention are 1-6#.

[0030]The chemical composition (weight %) of raw material used in table 1 embodiment of the present invention

[0031] batch number

Cu

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Abstract

The present invention relates to a preparation method of solid self-lubricating material. Said preparation method includes the following steps: firstly, using carbon oxide and metal and making them produce reaction under the action of a certain temperature and pressure to form carbonyl metal compound, then making the carbonyl metal compound undergo the process of thermo-cracking treatment to obtain the metal powder with required size, and making the metal powder be deposited on the surface of solid lubricating agent to coker said surface so as to form compact solid lubricating agent microspheres, making said microspheres be mixed with metal and alloy powder according to a certain ratio to obtain solid self-lubricating raw material, finally press-forming by utilizing isostatic cool pressing technique and sintering by means of vacuum-hydrogen sintering process so as to obtain the invented product. Besides, said invention also provides its application range.

Description

technical field [0001] The invention belongs to the field of preparation technology of powder metallurgy materials, in particular to a method for preparing solid self-lubricating materials used in temperature-resistant and heavy-duty solid self-lubricating bearings, friction pair partners, advanced sealing rings and other components in the fields of machinery and manufacturing. Background technique [0002] In the process of modern machinery manufacturing, all rotating parts in machinery and mechanisms need bearings, bearing bushes and bushings to support them. Due to the sharp increase in the operating speed and load of machines and mechanisms, as well as the requirements of harsh working conditions such as high temperature, dust, and heavy loads, metal-based fittings made of solid self-lubricating materials play an increasingly important role. The solid self-lubricating parts made of metal-based solid self-lubricating materials are lubricated by solid lubricants between th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02B22F9/16
Inventor 任卫李红印张瑞勇柳学全糜家铃黄乃红任勃姜丽娟李红云
Owner BEIJING CISRI GAONA TECH
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