Composite cylinder liner preparing technique by reinforcing alumina with zirconia

The invention relates to a technology of alumina ceramics and preparation process, which is applied in the field of preparation technology of zirconia toughened alumina ceramic composite cylinder liner, can solve the problems of non-wear-resistant metal cylinder liner, high processing cost, complicated preparation process, etc., and can prolong the use of rubber. The effect of long service life, long product life and simple preparation process

Active Publication Date: 2007-07-04
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology

The currently used mud pump cylinder liners are made of bimetallic cylinder liners, pure alumina cylinder liners and pure zirconia The service life is very short; the fracture toughness of the pure alumina cylin

Method used

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Example Embodiment

[0012] The present invention will be further described in detail below in conjunction with implementation examples.

[0013] According to the formula, weigh 40 kilograms of α-alumina with an average particle size of 0.4μm, 119 kilograms of α-alumina with an average particle size of 0.7μm, and 20 kilograms of zirconia stabilized with 5% yttria. Analysis of pure basic magnesium carbonate is 0.5 Kg, 0.5 kg of lanthanum oxide with a purity of 99.99%, put the weighed raw materials after iron removal and deionized water into the stirring mill, add 0.6 kg of SD-03 dispersant, stir the ball mill for 3 hours and then add 1 kg The SMP-500 binder is stirred for 1 hour, and the ball mill is stirred for a total of 4 hours, and the mill is aged for 48 hours to prepare a stable slurry with a solid content of 62 wt%; dried and granulated into a 160-mesh sieve 60wt% of granulated powder; the granulated powder is isostatically pressed in a latex mold into a cylindrical ceramic blank, where the mold...

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Abstract

The invention discloses a process for preparing alumina oxide ceramic composite cylinder liner intensified with zirconia. It takes alpha-alumina oxide as base material, adds zirconia stabilized with yttrium oxide, analytically pure basic magnesium carbonate and lanthanum oxide, ball grinds with stirring mill, produces particle in dry condition and shapes at high temperature. Then heat insulates for 3 hours at 1600-1620 Deg. C and bakes into ceramic porcelain body, processes outer sphere of ceramic porcelain body, puts the porcelain body into metallic jacket which is heated in advance and heat insulated and with the interference value being 0.25-0.30 mm, finishes machining the inner sphere of said ceramic porcelain body and polishes to make the roughness be between 0.1-0.2 um. The invention is characterized by simple process, high qualification rate for finished product, low production cost, prolonged life durability and 2-3 times increased life durability.

Description

technical field [0001] The invention belongs to a preparation process of special structural ceramics, in particular to a preparation process of a zirconia toughened alumina ceramic composite cylinder liner. Background technique [0002] The high-pressure mud pump is the "heart" of the oil drilling and geological exploration workbench, and the mud pump cylinder liner is an important component of the mud pump. The currently used mud pump cylinder liners are made of bimetallic cylinder liners, pure alumina cylinder liners and pure zirconia The service life is very short; the fracture toughness of the pure alumina cylinder liner is low, the preparation process is complicated, the service life is short, the surface of the pure zirconia liner is easy to pulverize, it is not suitable for marine use, and the processing cost is high. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a preparation pr...

Claims

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Application Information

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IPC IPC(8): C04B35/119C04B35/622C04B35/64C04B37/02
Inventor 杨勇飞王晓敏范兴宽张泰
Owner NUCLEAR POWER INSTITUTE OF CHINA
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