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Process for preparing lining of ceramic cylinder jacket

A ceramic cylinder and lining technology, which is applied to mechanical equipment, components of pumping devices for elastic fluids, liquid fuel engines, etc., can solve the problems of increased corrosion, weakened passivation effect of wear and other problems, and achieves production costs. The effect of reduction, yield improvement, and cost reduction

Inactive Publication Date: 2003-10-15
QINGDAO UNIV
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AI Technical Summary

Problems solved by technology

The metal material has strong activity, although chromium can play a passivation effect, but the wear effect will greatly weaken the passivation effect and aggravate the corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0035] Example 1: make mud pump ceramic cylinder liner liner with the present invention: take by weighing 110 grams of acrylamide and 2.5 grams of methylbisacrylamide and pour it into a beaker, add 400 grams of water, adjust the pH value to 9-10. Add 2.1 grams of acrylic acid-based anionic dispersant, fully dissolve to make a premix, add alumina and zirconia powders to a total weight of 3000 grams and mix. Its solid phase content reaches 62%. Agate balls were used as a medium in a polyurethane ball mill tank, and the ball milled for 10 hours to obtain a relatively dilute slurry. After degassing, 3.3 grams of 1% initiator was added to the slurry, mixed evenly, poured into the processed mold, heated to 80° C., and kept warm for 1 hour to make it fully gelled. Take off the mold, stand and dry in a nitrogen atmosphere for 24 hours, and dry in sections at 40-120° C. to obtain a rough body. Process the blank according to the calculated amount, leaving enough shrinkage and post-pr...

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Abstract

The present invention relates to zirconia toughened alumina ceramic cylinder liner and its preparation and is especially one ceramic cylinder liner used to replace double-metal cylinder liner in petroleum well drilling field. The main material used includes zirconia, alumina, silica powder, and during the production, monomer, cross-linking agent, initiator, dispersant and solvent are mixed, the mixture is gel molded, sintered in two steps into product. During the sintering, the first step has relatively low temperature and the deformation is corrected to ensure the sintered sizes. The ceramic cylinder liner thus produced has strength up to 320 MPa, toughness of 6.30 MPa, Vickers hardness up to 1200 MPa, simple production process, controlled sintering, and other advantages.

Description

Technical field: [0001] The invention relates to a preparation method of a zirconia toughened aluminum oxide (ZTA) ceramic cylinder liner, in particular to a preparation method of a ceramic cylinder liner used in the oil drilling field to replace a bimetal cylinder liner. technical background: [0002] At present, oil drilling pump cylinder liners use bimetallic liners, and the outer layer is made of metal 35 # Steel, the inner lining is high chromium high carbon cast iron, which has good wear resistance and corrosion resistance. However, due to the extremely harsh working conditions of the mud pump, it has to withstand the wear of mud and sand and the corrosion of strong alkali medium for a long time. Therefore, the average service life of the bimetallic cylinder liner is only 300 to 500 hours. In offshore oil development and deep well drilling, due to mud The working pressure of the pump is high, the wear and corrosion are more serious, and the service life is shorter. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/119C04B35/622F04B53/16
Inventor 戚凭侯耀永陈沙鸥
Owner QINGDAO UNIV
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