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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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AI Technical Summary

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 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

Method used

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Examples

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Embodiment Construction

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

[0013] Weigh 40 kg of α-alumina with an average particle size of 0.4 μm, 119 kg of α-alumina with an average particle size of 0.7 μm, 20 kg of 5% yttria-stabilized zirconia, and analyze soda magnesium carbonate 0.5 kg, 0.5 kg of lanthanum oxide with a purity of 99.99%, put the weighed raw materials into the stirring mill after removing iron and deionized water, add 0.6 kg of SD-03 dispersant, and add 1 kg after stirring the ball mill for 3 hours The binder of SMP-500 was stirred and ball-milled for 1 hour, and a total of 4 hours was stirred and ball-milled, and the mill was stale for 48 hours to prepare a stable slurry with a solid content of 62wt%. Drying and granulation into a particle size of 160 mesh sieve It is 60wt% granulated powder; the granulated powder is isostatically pressed into a cylindrical ceramic blank in a latex mold, wherein the molding p...

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PUM

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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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