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High-strength wear-resistant silicide base metal ceramic bearing and preparation method thereof

A technology of ceramic bearings and silicides, which is applied in the field of high-strength wear-resistant silicide-based cermet bearings and its preparation, can solve the problems of low market share and achieve the effects of not easy to wear, easy to control parameters, and safe and environmentally friendly production process

Inactive Publication Date: 2016-08-24
王莹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-strength wear-resistant silicide-based cermet bearings are rare in the domestic market, and those sold in a small amount and with good reputation are basically imported products, and the market share of domestic products is even less

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A high-strength wear-resistant silicide-based cermet bearing, made of the following raw materials in parts by weight: 40 parts of manganese silicide, 50 parts of iron silicide, 20 parts of iron powder, 3 parts of magnesium powder, 10 parts of realgar powder, black bismuth gold ore 3 parts of apatite powder, 13 parts of apatite powder, 6 parts of germanium dioxide, 3 parts of potassium oxide, 3 parts of stainless steel powder, and 3 parts of oleic acid.

[0015] The steps of the preparation method are as follows: first put all raw materials into a high-speed mixer, mix and stir them, then place the uniformly mixed mixture in a mold and press it into a preform, the pressing pressure is 40-50MPa, and then the preform High temperature sintering, the sintering temperature is 900-1200°C, the sintering time is 3-6h, and the temperature can be lowered to room temperature.

Embodiment 2

[0017] A high-strength wear-resistant silicide-based cermet bearing, made of the following raw materials in parts by weight: 50 parts of manganese silicide, 60 parts of iron silicide, 30 parts of iron powder, 10 parts of magnesium powder, 20 parts of realgar powder, black bismuth gold ore 8 parts of apatite powder, 20 parts of apatite powder, 8 parts of germanium dioxide, 6 parts of potassium oxide, 11 parts of stainless steel powder, and 5 parts of oleic acid.

[0018] The steps of the preparation method are as follows: first put all raw materials into a high-speed mixer, mix and stir them, then place the uniformly mixed mixture in a mold and press it into a preform, the pressing pressure is 40-50MPa, and then the preform High temperature sintering, the sintering temperature is 900-1200°C, the sintering time is 3-6h, and the temperature can be lowered to room temperature.

Embodiment 3

[0020] A high-strength wear-resistant silicide-based cermet bearing, made of the following raw materials in parts by weight: 45 parts of manganese silicide, 55 parts of iron silicide, 26 parts of iron powder, 6 parts of magnesium powder, 15 parts of realgar powder, black bismuth gold ore 6 parts of apatite powder, 18 parts of apatite powder, 7 parts of germanium dioxide, 4 parts of potassium oxide, 7 parts of stainless steel powder, and 4 parts of oleic acid.

[0021] The steps of the preparation method are as follows: first put all raw materials into a high-speed mixer, mix and stir them, then place the uniformly mixed mixture in a mold and press it into a preform, the pressing pressure is 40-50MPa, and then the preform High temperature sintering, the sintering temperature is 900-1200°C, the sintering time is 3-6h, and the temperature can be lowered to room temperature.

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PUM

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Abstract

The invention discloses a high-strength wear-resistant silicide base metal ceramic bearing and a preparation method thereof. The high-strength wear-resistant silicide base metal ceramic bearing is prepared from the following raw materials in parts by weight: 40-50 parts of manganese silicide, 50-60 parts of iron silicide, 20-30 parts of iron powder, 3-10 parts of magnesium powder, 10-20 parts of realgar powder, 3-8 parts of maldonite powder, 13-20 parts of apatite powder, 6-8 parts of germanium dioxide, 3-6 parts of potassium oxide, 3-11 parts of stainless steel powder and 3-5 parts of oleic acid. Compared with the traditional metal ceramic bearings, the high-strength wear-resistant silicide base metal ceramic bearing prepared by the method disclosed by the invention has better strength, wear resistance and heat resistance, so that the bearing is free of deformation under high-temperature conditions and is difficult to wear, and the bearing also has the advantages of simple preparation process, low processing cost, easy control of parameters, safe and environment-friendly production process and adaptability to large-scale industrial production.

Description

technical field [0001] The invention specifically relates to a high-strength wear-resistant silicide-based cermet bearing and a preparation method thereof. Background technique [0002] Cermet English word cermet or ceramet is composed of ceramic (ceramic) and metal (metal). Cermet refers to the composite material of metal and ceramic prepared by powder metallurgy method. Cermet has the advantages of both metal and ceramic. It has low density, high hardness, wear resistance and good thermal conductivity. Brittle. Cermet not only has the toughness, high thermal conductivity and good thermal stability of metal, but also has the characteristics of high temperature resistance, corrosion resistance and wear resistance of ceramics. Cermets have broad application prospects in aerospace, national defense, precision manufacturing and other fields. Silicide-based cermets are based on manganese silicide, iron silicide, cobalt silicide, nickel silicide, titanium silicide, zirconium s...

Claims

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Application Information

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IPC IPC(8): C22C29/18C22C29/00C22C1/05B22F5/10
CPCC22C29/18B22F5/106C22C1/051C22C29/00
Inventor 王莹
Owner 王莹