CN102060530A - Preparation method of compact zirconia ceramic plunger - Google Patents

Preparation method of compact zirconia ceramic plunger Download PDF

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Publication number
CN102060530A
CN102060530A CN2010105461913A CN201010546191A CN102060530A CN 102060530 A CN102060530 A CN 102060530A CN 2010105461913 A CN2010105461913 A CN 2010105461913A CN 201010546191 A CN201010546191 A CN 201010546191A CN 102060530 A CN102060530 A CN 102060530A
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plunger
zirconia ceramics
preparation
compact
compact zirconia
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CN102060530B (en
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谢建林
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Shanghai Institute of Materials
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Shanghai Institute of Materials
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Abstract

The invention relates to a preparation method of a compact zirconia ceramic plunger. The preparation method comprises the following steps: fully mixing zirconia ceramic granulated powder with a compound additive; placing the obtained mixture in a die for isostatic pressing; sintering the molded sample into a compact zirconia ceramic plunger blank; and finally grinding the blank into the ceramic plunger with precise size. Compared with the prior art, by utilizing the zirconia plunger material and the preparation method thereof provided by the invention, the compactness, the forming efficiency and the finished product ratio of the ceramic plunger are effectively improved. A high-pressure plunger pump manufactured by the compact zirconia ceramic plunger has the advantages of long service life, wear resistance, corrosion resistance, expanded application range, and shortened time for maintaining and replacing a high-pressure plunger and a sealing bush in the case of shutdown, thus saving engineering operating cost.

Description

A kind of preparation method of compact zirconia ceramics plunger
Technical field
The present invention relates to a kind of preparation method of high pressure plunger pump parts, especially relate to a kind of preparation method of compact zirconia ceramics plunger.
Background technology
Plunger is one of high pressure plunger pump core component, and it is characteristics of utilizing its wear resistant corrosion resistant, cooperates high-pressure seal ring, in to-and-fro movement, makes water or liquid phase working medium form high pressure fluid.The general shape of plunger is made up of the real core or the hollow rod shaped structure of length-to-diameter ratio 10~20, because operating pressure height, under high pressure back and forth rub and the impact push-and-pull for a long time with sealing material, so not only require to constitute the material hardness height of plunger, good toughness, and demanding physical dimension and surface smoothness.Plunger material is made up of antifriction metal (AFM) usually, but in oil, chemical industry, pharmacy, food and high-pressure water jet cutting, cleaning industry, the liquid phase working medium often is made up of pure water or seawater, working medium pressure height not only, poor lubricity, and contain the hard solid phase particles, in application, cause the corrosion and the wearing and tearing of metal plunger easily.Cause the ram pump non-stop run life-span short, or operational failure.
Therefore, adopting ceramic plunger to substitute the antifriction metal (AFM) plunger, is the effective way that overcomes its defective.Zirconia ceramics is because of having good wear-resistant, corrosion-resistant, high strength, high tenacity and characteristics such as high temperature resistant.It can be used in special rugged environment, and contaminated material and environment do not replace metal plunger such as high strength stainless steel, Wimet in hydraulic-mechanic system, can realize prolonging plunger work-ing life, improve equipment operating efficiency, avoid the effects such as pollution of abrasion particle material.The preparation of zirconia ceramics mainly contains following four critical process processes.1. preparation of raw material, 2. blank forming, 3. high temperature sintering, 4. ground finish etc.The purpose that solves zirconia ceramics plunger moulding powder compounding process is: by the factors such as component, dispersion state, the distribution of shaping powder material granularity and moulding wedding agent of control shaping raw material, the compact density of regulation and control base substrate and the microstructure and the mechanical property of sintered compact.Reach the micritization that realizes material, reduce little gas hole defect.
The preparation method of zirconia ceramics has wet method and two kinds of technologies of dry method usually.Wet processing is to adopt yttrium oxide PSZ fine powder material through mixing with water-based or organic bond, is modulated into slurry, through cast or injection molding; Dry process is that to adopt yttrium oxide PSZ mist projection granulating powder be raw material, through dry-pressing or etc. static pressure or both in conjunction with compression moulding, have the shaping efficiency height, base substrate high conformity, characteristics such as green density and intensity height.
Because the diameter of compact zirconia ceramics base substrate generally greater than 10mm, adopts wet processing, not only the process-cycle long, complex process, and easy in the process of removing the moulding wedding agent causes defectives such as blank deformation, cracking, bubble.Therefore, dry process is a preparation compact zirconia ceramics plunger effective technical way.The purpose that solves high-density zirconia ceramics plunger moulding and sintering technology is: on the basis of optimizing materials compounding process, by regulation and control moulding and sintering process parameter, the structural uniformity, the inhibition sintering process gathering pore that improve molding blank produce.Realize sintered compact micritization dense sintering, reduce critical void content, guarantee the raising of comprehensive wear resisting property.
For reaching compact zirconia ceramics high-pressure plunger high-strength wearable, be implemented in the application quality target of the medium-term and long-term safe operation of high pressure load medium, its physical dimension and surface requirements are high, diameter and circularity dimensional tolerance range are 0.02mm, particular requirement must reach the dimensional precision of 6 μ m, and surface smoothness is 0.2.Solve the key problem in technology of ground finish, must realize the surface quality target of goods by frock design and the design of processing polishing process and the process operation time variable control of attrition process equipment.
Summary of the invention
Purpose of the present invention is exactly the preparation method that a kind of density height, good toughness, few, the accurate in size compact zirconia ceramics plunger of little gas hole defect are provided for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of preparation method of compact zirconia ceramics plunger is characterized in that, this method may further comprise the steps:
(1) modulation of moulding powder: zirconia ceramics granulation powder and composite additive are (97~98) by weight: thorough mixing carries out (3~2);
(2) mixture that step (1) is obtained places the mould isostatic pressing, and the design of forming mould is fit to elongated zirconia ceramics spare isostatic pressing, and each is even to pressurized to make base substrate, reduces the ununiformity of residual little pore in the base substrate;
(3) high temperature sintering: will sinter compact zirconia ceramics plunger blank into through formed in mould sample;
(4) ground finish: the ground finish of compact zirconia ceramics plunger blank is become ceramic plunger.
Zirconia ceramics granulation powder described in the step (1) comprises following component and weight part content: zirconium white 85~95, yttrium oxide 4~6, calcium oxide 0.02~0.1 or magnesium oxide 0.02~0.1, aluminum oxide 0.02~2.
Composite additive described in the step (1) is selected from one or more in stearic acid, aluminum stearate, Magnesium Stearate, calcium stearate, aluminum oxide magnesium oxide, calcium oxide, cerium oxide, oleic acid or the kerosene.
Mould described in the step (2) is by oil resisting rubber pipe box, porous retainer and have the plug that vacuumizes interface and constitute.
Isostatic pressing described in the step (2) adopts following processing condition: forming pressure is 200~240MPa, and the dwell time is 1~6min.
The temperature range of the high temperature sintering described in the step (3) is 1550~1600 ℃.
Ceramic plunger described in the step (4) is hollow ceramic plunger tube or real core ceramics pole stopper.
Compared with prior art, key point of the present invention has been to add the organic additive that can play powder particle pressurization phorogenesis and has improved material hardness, suppresses that material grains is grown up, the inorganic additives of controlled material phase transformation component in raw material, can effectively improve the green density of zirconia ceramics plunger and the compactness of sintered compact.Key point of the present invention also is to have designed special-purpose isostatic pressing mould and pressure regime, can effectively improve the shaping efficiency and the yield rate of zirconia ceramics plunger.Solved high temperature sintering and optimized sintering method and parameter control techniques, made relative density>99.1% of the compact zirconia ceramics plunger product of making, through ground finish, diameter and circularity dimensional tolerance range are<0.015mm that surface smoothness is 0.2.Distinguishingly, diameter and circularity tolerance of dimension reach the dimensional precision of 5 μ m.
The invention has the advantages that, can effectively improve compactness, shaping efficiency and the yield rate of zirconia ceramics plunger.The purpose of density height, good toughness, few, the accurate in size high strength plunger of little gas hole defect is prepared in realization.Adopt the core component of this compact zirconia ceramics plunger as high pressure plunger pump; have long service life, wear-resisting, corrosion resistant superiority can be expanded the range of application of ram pump; reduce shutdown maintenance and change high-pressure plunger and seal cartridge number of times, save the engineering operation cost.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.
Embodiment 1
With commercially available 3mol%Y 2O 3Stable zirconia ceramics granulation powder adds the composite additive that contains stearic acid, ultra-fine high purity aluminium oxide and components such as calcium stearate, kerosene, presses following weight percent formulated:
3mol%Y 2O 3Stable zirconia ceramics granulation powder 97.6%,
Stearic acid 0.1%,
Calcium stearate 0.15%,
Aluminum oxide 0.02%,
Kerosene 2.13%,
In plastic containers, carry out thorough mixing, pack into by oil resisting rubber pipe box, porous retainer then and have the moulding mould special that the plug that vacuumizes interface constitutes,, reduce the air content in the die cavity through vacuumizing; Put into the hydraulic ram of isostatic pressing machine, under the pressure of 200MPa, pressurize moulding in 3 minutes; Under 1580 ℃ sintering temperature, be incubated 150 minutes, through accurately grinding, the specification of making is φ 10 * 260 and φ 12.7 * 165 compact zirconia ceramics plungers, reaches technical feature shown in A row in the table 1.
Embodiment 2
With commercially available 3mol%Y 2O 3Stable zirconia ceramics granulation powder adds the composite additive that contains components such as aluminum stearate, Magnesium Stearate, oleic acid, presses following weight percent formulated:
3mol%Y 2O 3Stable zirconia ceramics granulation powder 98%,
Aluminum stearate 0.15%,
Magnesium Stearate 0.1%,
Acid oil 1.85%,
In plastic containers, carry out thorough mixing, pack into by oil resisting rubber pipe box, porous retainer then and have the moulding mould special that the plug that vacuumizes interface constitutes,, reduce the air content in the die cavity through vacuumizing; Put into the hydraulic ram of isostatic pressing machine, under the pressure of 220MPa, pressurize moulding in 4 minutes; Under 1585 ℃ sintering temperature, be incubated 180 minutes, through accurately grinding, the specification of making is φ 16 * 160 compact zirconia ceramics plungers, reaches technical feature shown in B row in the table 1.
Embodiment 3
With commercially available 3mol%Y 2O 3Stable zirconia ceramics granulation powder adds the composite additive that contains components such as stearic acid, Magnesium Stearate, oleic acid, presses following weight percent formulated:
3mol%Y 2O 3Stable zirconia ceramics granulation powder 98%,
Stearic acid 0.1%,
Magnesium Stearate 0.1%,
Acid oil 1.8%,
In plastic containers, carry out thorough mixing, pack into by oil resisting rubber pipe box, porous retainer then and have the moulding mould special that the plug that vacuumizes interface constitutes,, reduce the air content in the die cavity through vacuumizing; Put into the hydraulic ram of isostatic pressing machine, under the pressure of 240MPa, pressurize moulding in 6 minutes; Under 1595 ℃ sintering temperature, be incubated 180 minutes, through accurately grinding, the specification of making is φ 22.20 * 300 compact zirconia ceramics plungers, reaches technical feature shown in C row in the table 1.
Embodiment 4
With commercially available 3mol%Y 2O 3Stable zirconia ceramics granulation powder adds the composite additive that contains components such as stearic acid, Magnesium Stearate, oleic acid, presses following weight percent formulated:
3mol%Y 2O 3Stable zirconia ceramics granulation powder 98%,
Stearic acid 0.1%,
Magnesium Stearate 0.1%,
Acid oil 1.8%,
In plastic containers, carry out thorough mixing, the moulding mould special of packing into then and constituting by oil resisting rubber, plug and plug; Put into the hydraulic ram of isostatic pressing machine, under the pressure of 200MPa, pressurize moulding in 6 minutes; Under 1595 ℃ sintering temperature, be incubated 220 minutes, through accurately grinding, the specification of making is φ 75 * φ 32 * 380 compact zirconia ceramics plunger tubes, reaches technical feature shown in D row in the table 1.
Table 1
Embodiment 5
A kind of preparation method of compact zirconia ceramics plunger, this method may further comprise the steps:
(1) modulation of moulding powder: with zirconia ceramics granulation powder and composite additive is to carry out thorough mixing at 97: 3 by weight, wherein zirconia ceramics granulation powder is made up of following prescription: zirconium white: yttrium oxide: calcium oxide: aluminum oxide is 85: 4: 0.02: 0.02, and composite additive is an aluminum stearate;
(2) mixture that step (1) is obtained places by oil resisting rubber pipe box, porous retainer and has the mould isostatic pressing that the plug that vacuumizes interface constitutes, the design of forming mould is fit to elongated zirconia ceramics spare isostatic pressing, the control forming pressure is 200MPa, dwell time is 6min, each is even to pressurized to make base substrate, reduces the ununiformity of residual little pore in the base substrate;
(3) high temperature sintering: the temperature of control high temperature sintering is 1550 ℃, will sinter compact zirconia ceramics plunger blank into through formed in mould sample;
(4) ground finish: the ground finish of compact zirconia ceramics plunger blank is become the hollow ceramic plunger tube.
Embodiment 6
A kind of preparation method of compact zirconia ceramics plunger, this method may further comprise the steps:
(1) modulation of moulding powder: with zirconia ceramics granulation powder and composite additive is to carry out thorough mixing at 98: 2 by weight, wherein zirconia ceramics granulation powder is made up of following prescription: zirconium white: yttrium oxide: magnesium oxide: aluminum oxide is 95: 6: 0.1: 2, and composite additive is the mixture of aluminum stearate, Magnesium Stearate and calcium stearate;
(2) mixture that step (1) is obtained places by oil resisting rubber pipe box, porous retainer and has the mould isostatic pressing that the plug that vacuumizes interface constitutes, the design of forming mould is fit to elongated zirconia ceramics spare isostatic pressing, the control forming pressure is 240MPa, dwell time is 1min, each is even to pressurized to make base substrate, reduces the ununiformity of residual little pore in the base substrate;
(3) high temperature sintering: the temperature of control high temperature sintering is 1600 ℃, will sinter compact zirconia ceramics plunger blank into through formed in mould sample;
(4) ground finish: with compact zirconia ceramics plunger blank ground finish Cheng Shixin ceramics pole stopper.

Claims (7)

1. the preparation method of a compact zirconia ceramics plunger is characterized in that, this method may further comprise the steps:
(1) modulation of moulding powder: zirconia ceramics granulation powder and composite additive are (97~98) by weight: thorough mixing carries out (3~2);
(2) mixture that step (1) is obtained places the mould isostatic pressing, and the design of forming mould is fit to elongated zirconia ceramics spare isostatic pressing, and each is even to pressurized to make base substrate, reduces the ununiformity of residual little pore in the base substrate;
(3) high temperature sintering: will sinter compact zirconia ceramics plunger blank into through formed in mould sample;
(4) ground finish: the ground finish of compact zirconia ceramics plunger blank is become ceramic plunger.
2. the preparation method of a kind of compact zirconia ceramics plunger according to claim 1, it is characterized in that, zirconia ceramics granulation powder described in the step (1) comprises following component and weight part content: zirconium white 85~95, yttrium oxide 4~6, calcium oxide 0.02~0.1 or magnesium oxide 0.02~0.1, aluminum oxide 0.02~2.
3. the preparation method of a kind of compact zirconia ceramics plunger according to claim 1, it is characterized in that the composite additive described in the step (1) is selected from one or more in stearic acid, aluminum stearate, Magnesium Stearate, calcium stearate, aluminum oxide magnesium oxide, calcium oxide, cerium oxide, oleic acid or the kerosene.
4. the preparation method of a kind of compact zirconia ceramics plunger according to claim 1 is characterized in that, the mould described in the step (2) is by oil resisting rubber pipe box, porous retainer and have the plug that vacuumizes interface and constitute.
5. the preparation method of a kind of compact zirconia ceramics plunger according to claim 1 is characterized in that, the isostatic pressing described in the step (2) adopts following processing condition: forming pressure is 200~240MPa, and the dwell time is 1~6min.
6. the preparation method of a kind of compact zirconia ceramics plunger according to claim 1 is characterized in that, the temperature range of the high temperature sintering described in the step (3) is 1550~1600 ℃.
7. the preparation method of a kind of compact zirconia ceramics plunger according to claim 1 is characterized in that, the ceramic plunger described in the step (4) is hollow ceramic plunger tube or real core ceramics pole stopper.
CN2010105461913A 2010-11-16 2010-11-16 Preparation method of compact zirconia ceramic plunger Active CN102060530B (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102351531A (en) * 2011-06-24 2012-02-15 深圳市京南瓷业有限公司 Zirconia ceramic plunger and manufacturing method thereof
CN103144760A (en) * 2013-03-01 2013-06-12 溧阳市科技开发中心 Aircraft fuselage cover
CN103796969A (en) * 2011-09-16 2014-05-14 康宁股份有限公司 Methods for reducing defects in ceramic articles and precursors
CN106182398A (en) * 2016-07-08 2016-12-07 苏州珂玛材料技术有限公司 A kind of moulding process of ceramic plunger
CN107285763A (en) * 2017-07-19 2017-10-24 焦作市维纳科技有限公司 A kind of preparation method of compound zirconia HTHP atomizer
CN107445615A (en) * 2017-08-25 2017-12-08 深圳市商德先进陶瓷股份有限公司 Zirconia ceramics and preparation method thereof, ceramic plunger and plunger pump
CN107488033A (en) * 2017-08-08 2017-12-19 衢州飞瑞特种陶瓷有限公司 A kind of gel process for preparing of gel-formed zirconium oxide ceramics pole stopper
CN111774558A (en) * 2020-06-19 2020-10-16 江苏兴湖耐火材料有限公司 Method for manufacturing tundish nozzle with excellent thermal shock stability for continuous casting

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CN1458119A (en) * 2003-04-30 2003-11-26 天津大学 Process for preparing polynary zirconia toughened ceramic plunger of oil pump
CN101514104A (en) * 2009-04-07 2009-08-26 广东东方锆业科技股份有限公司 Zirconium oxide ceramic cylinder jacket material and preparation method thereof
CN101638317A (en) * 2008-08-02 2010-02-03 比亚迪股份有限公司 Fully stabilized zirconia ceramic material and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1458119A (en) * 2003-04-30 2003-11-26 天津大学 Process for preparing polynary zirconia toughened ceramic plunger of oil pump
CN101638317A (en) * 2008-08-02 2010-02-03 比亚迪股份有限公司 Fully stabilized zirconia ceramic material and preparation method thereof
CN101514104A (en) * 2009-04-07 2009-08-26 广东东方锆业科技股份有限公司 Zirconium oxide ceramic cylinder jacket material and preparation method thereof

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102351531A (en) * 2011-06-24 2012-02-15 深圳市京南瓷业有限公司 Zirconia ceramic plunger and manufacturing method thereof
CN103796969A (en) * 2011-09-16 2014-05-14 康宁股份有限公司 Methods for reducing defects in ceramic articles and precursors
CN103796969B (en) * 2011-09-16 2016-05-11 康宁股份有限公司 Reduce the method for the defect in ceramic and precursor
CN103144760A (en) * 2013-03-01 2013-06-12 溧阳市科技开发中心 Aircraft fuselage cover
CN103144760B (en) * 2013-03-01 2015-06-10 溧阳市科技开发中心 Aircraft fuselage cover
CN106182398A (en) * 2016-07-08 2016-12-07 苏州珂玛材料技术有限公司 A kind of moulding process of ceramic plunger
CN107285763A (en) * 2017-07-19 2017-10-24 焦作市维纳科技有限公司 A kind of preparation method of compound zirconia HTHP atomizer
CN107285763B (en) * 2017-07-19 2018-03-09 焦作市维纳科技有限公司 A kind of preparation method of compound zirconia HTHP atomizer
CN107488033A (en) * 2017-08-08 2017-12-19 衢州飞瑞特种陶瓷有限公司 A kind of gel process for preparing of gel-formed zirconium oxide ceramics pole stopper
CN107488033B (en) * 2017-08-08 2020-06-23 衢州飞瑞特种陶瓷有限公司 Gel preparation method of gel-formed zirconia ceramic plunger rod
CN107445615A (en) * 2017-08-25 2017-12-08 深圳市商德先进陶瓷股份有限公司 Zirconia ceramics and preparation method thereof, ceramic plunger and plunger pump
CN107445615B (en) * 2017-08-25 2020-01-31 深圳市商德先进陶瓷股份有限公司 Zirconia ceramic, preparation method thereof, ceramic plunger and plunger pump
CN111774558A (en) * 2020-06-19 2020-10-16 江苏兴湖耐火材料有限公司 Method for manufacturing tundish nozzle with excellent thermal shock stability for continuous casting
CN111774558B (en) * 2020-06-19 2021-12-14 江苏兴湖耐火材料有限公司 Method for manufacturing tundish nozzle with excellent thermal shock stability for continuous casting

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