Preparation technology of ceramic cylinder liner of drilling mud pump

A preparation process and drilling mud technology, which are applied in the field of preparation technology of zirconia toughened alumina ceramic cylinder liner, can solve problems such as product defects and low life, and achieve uniform microstructure, improved life and high surface gloss. Effect

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 preparation process for zirconia toughened alumina ceramic cylinder liners

Method used

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Embodiment Construction

[0014] A kind of preparation technology of drilling mud pump ceramic cylinder liner, its composition by weight percentage is: average particle size is 0.5um, percentage is 70~78wt% α-alumina; Zirconia; Lanthanum oxide with a purity of 99.99% and a percentage of 0.5% by weight; a percentage of 0.5% by weight of Lanthanum oxide and silicon dioxide;

[0015] The preparation process is as follows: (1) Add the raw materials weighed according to the formula into water and ammonium citrate dispersant, the percentage of ammonium citrate dispersant is 0.6wt%, put it into a ball mill for ball milling, and the ball milling time is 5h;

[0016] (2) Add emulsified paraffin wax with a percentage of 0.2wt%, stir and stale for 12 hours, and stir evenly;

[0017] (3) Centrifugal drying, the median diameter of raw material dried particles is 120 mesh, and the water content of raw material after drying is 0.4~0.6%;

[0018] (4) Add 0.04~0.05wt% raw oleic acid to the dried raw materials and mix ...

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Abstract

The invention belongs to the technical field of a ceramic preparation technology, and particularly relates to a preparation technology of a ceramic cylinder liner of a drilling mud pump. The preparation technology comprises the steps of putting 70-78wt% of alpha-aluminum oxide, 20-30wt% of zirconium oxide containing 5.7wt% of yttrium oxide, 0.5wt% of lanthanum oxide with purity of 99.99% and 0.5wt% of lanthanum oxide and silicon dioxide into a ball mill, and performing ball milling, drying and sintering to obtain a finished product. By adopting the technology, the processed ceramic can overcome the chalking phenomenon of zirconium oxide as well as the shortcoming of low fracture toughness of aluminum oxide, and the produced ceramic cylinder liner is resistant to corrosion, acid and base and high temperature and can work in media such as drilling mud, other liquids with strong corrosivity and the like; the hardness is enough to resist the grinding or scouring of various sharp or high-abrasiveness solid-phase particles in high-pressure mud.

Description

technical field [0001] The invention belongs to the technical field of ceramic preparation technology, and in particular relates to a preparation technology of zirconia toughened alumina ceramic cylinder liner. Background technique [0002] If mud is the blood of drilling, then the mud pump is the heart of the drilling equipment, and the cylinder liner and piston are the heart of the mud pump. Therefore, the life of the cylinder liner directly affects the drilling efficiency, drilling cost and labor intensity of the drilling workers. Generally speaking, the comprehensive day rate for drilling deep and ultra-deep wells is relatively high, and repairing pumps will cause great economic losses, especially for offshore drilling. The comprehensive day rate for drilling ships is higher, about 200,000-700,000 US dollars per day Within the range, therefore, on average, the delay in repairing the pump for 1 hour will cost about 18,800 US dollars. For this reason, scientists and equipm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622
Inventor 章旭
Owner HEFEI JINGCHUANG CERAMIC EQUIP TECH
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