Zirconia toughened alumina ceramic cylinder sleeve

A technology of alumina ceramics and zirconia, which is applied in the field of zirconia toughened alumina ceramic cylinder liners, can solve problems such as low service life and defective products, and achieve the effects of increased service life, uniform microstructure and high surface gloss

Inactive Publication Date: 2014-01-08
HEFEI JINGCHUANG CERAMIC EQUIP TECH
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low service life and prone to various adverse phenomena in the production of drilling mud pump cylinder liners in the above-mentioned prior art, the present invention provides a zirconia toughened alumina ceramic cylinder liner

Method used

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Embodiment Construction

[0008] 100 kg by weight is composed of: 65% alumina, 24% zirconia, 1.5% yttrium oxide, 0.5% lanthanum oxide, 3% magnesium carbonate, 50 kg of water and 0.4% by weight of lemon Ammonium acid is ball milled and mixed according to the process flow, granulated, and after static pressure forming the cylinder liner, it is fired at 1650°C for 4 hours. The produced ceramic cylinder liner is resistant to corrosion, acid and alkali, and high temperature, which can meet the requirements of working in drilling mud or other highly corrosive liquids, and is hard enough to resist various sharp or abrasive solids in high-pressure mud. Phase particles are ground or scoured. The microstructure of ceramics is uniform and the surface gloss is high, which is beneficial to improve the life of the piston. The working pressure of the ceramic cylinder liner is high, which can meet the needs of drilling deep and ultra-deep wells.

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Abstract

The invention belongs to the technical field of preparation processes of ceramics and specifically relates to a zirconia toughened alumina ceramic cylinder sleeve. The zirconia toughened alumina ceramic cylinder sleeve comprises the following components in percentage by weight: 60-70% of alumina, 20-30% of zirconia, 1.2-1.5% of yttrium oxide, 0.5% of lanthanum oxide and 3-3.3% of magnesium carbonate and is prepared by the process flow comprising the steps of ball milling, mixing, granulation, molding and sintering. The produced ceramic cylinder sleeve has the advantages of corrosion resistance, acid and alkali resistance and high temperature resistance, and can work in drilling mud or other liquid media with strong corrosiveness, and the hardness is sufficient to resist grinding or scoring of various solid-phase particles with sharpness or strong grinding property in the high-pressure mud. The ceramic microstructure is uniform, and the surface gloss is high, so that the zirconia toughened alumina ceramic cylinder sleeve is favorable to prolonging the service life of a piston. The ceramic cylinder sleeve is high in working pressure and can meet the requirements of drilling deep wells and ultra-deep wells.

Description

technical field [0001] The invention belongs to the technical field of ceramic preparation technology, and in particular relates to a zirconia toughened alumina ceramic cylinder liner. Background technique [0002] Drilling pump is an important equipment for oil field drilling to transport drilling mud and take bottom rock out of the well. Therefore, the life of the cylinder liner directly affects the drilling efficiency and drilling cost as well as the labor intensity of the drilling workers. The comprehensive day rate for deep wells is high, and repairing pumps will cause great economic losses, especially for offshore drilling, where the comprehensive day rate for drilling ships is higher. [0003] The latest use of mud pumps is generally metal steel sleeves. According to statistics, its average life span is about tens of hours to 200 hours. -500 hours or so. However, it has the characteristics of non-wear resistance and corrosion resistance. The pure zirconia cylind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10
Inventor 章旭
Owner HEFEI JINGCHUANG CERAMIC EQUIP TECH
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