High-strength self-lubricating metal ceramic bearing and preparation method thereof

A cermet, high-strength technology, applied in the field of cermet bearings, can solve the problems of not meeting the bearing strength requirements, affecting the strength of the cermet, affecting the service life of the bearing, etc., to reduce the interface effect, increase the apparent porosity, and improve the lubricity. Effect

Inactive Publication Date: 2016-03-02
ANHUI SILVER BALL BEARING
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, the metal and ceramic phases are directly sintered, and its boundary effect will affect the strength of the cermet, thereby affecting the service life of the bearing
The ratio of raw materials given in the article cannot meet the strength requirements of the bearing under high load conditions, and needs to be improved

Method used

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Examples

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Embodiment Construction

[0013] A high-strength self-lubricating cermet bearing, made of the following raw materials in parts by weight (kg): iron citrate 2.3, basic nickel carbonate 3.1, water 25, ammonia water, TiH 2 2.9, nano carbon 1.1, TiC15, lubricant 0.7, C1, Cr3.9, W5.8, Mo5.1, V3.1, Fe65.

[0014] The preparation method of the described high-strength self-lubricating cermet bearing comprises the following steps:

[0015] (1) Add ferric citrate to water in a nitrogen atmosphere, heat to 60°C, stir at 90 rpm for 1.5 hours, add TiC and nano-carbon, stir for 1 hour, then add basic nickel carbonate and stir for 3 hours, use Adjust the pH value to 6 with ammonia water, heat to 90°C and keep stirring at this temperature for 2 hours to obtain a gel;

[0016] (2) Heating the gel to 150°C and maintaining the temperature until no smoke is produced, then stopping the heating, then grinding the resulting block into powder, and calcining the powder at 500°C for 2 hours in a hydrogen atmosphere to obtain ...

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Abstract

The invention discloses a high-strength self-lubricating metal ceramic bearing. The high-strength self-lubricating metal ceramic bearing is prepared from, by weight, 2.3-2.4 parts of ferric citrate, 3.1-3.5 parts of basic nickel carbonate, 25-30 parts of water, an appropriate amount of ammonium hydroxide, 2.9-3 parts of TiH2, 1.1-1.3 parts of nanocarbon, 15-15.4 parts TiC, 0.7-0.9 part of lubricant, 1-1.1 parts of C, 3.9-4.1 parts of Cr, 5.8-6 parts of W, 5.1-5.3 parts of Mo, 3.1-3.3 parts of V and 65-66 parts of Fe. Ferric citrate and basic nickel carbonate are used for carrying out coating modification on TiC, the bonding strength of a ceramic phase and a metal phase is improved, and the strength and the toughness of the bearing are greatly improved. Nanocarbon, ferrocene acetyenic ketone and ferric alginate are adopted, so that the lubricating performance and compactness in the pressing process are improved, the pore connectivity of sintered materials is good, the show porosity is improved, and the wear resistance of the bearing is extremely good.

Description

technical field [0001] The invention relates to the technical field of cermet bearings, in particular to a high-strength self-lubricating cermet bearing and a preparation method thereof. Background technique [0002] The development of modern science and technology has higher and higher requirements on the friction, wear and lubrication performance of materials under high temperature conditions. The research and development of self-lubricating composite materials has become an important research hotspot in the field of tribology. Metal or ceramic-based self-lubricating materials are composite materials formed by adding solid lubricants into metal or ceramic matrix as components, and their tribological properties depend on the precipitation and dispersion distribution of solid lubricant contained in the matrix during the friction process. However, there are few solid lubricants that can withstand high sintering temperature without losing lubricating properties, and their une...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/24C22C33/02
Inventor 余寅生
Owner ANHUI SILVER BALL BEARING
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