CN102351531A - Zirconia ceramic plunger and manufacturing method thereof - Google Patents

Zirconia ceramic plunger and manufacturing method thereof Download PDF

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Publication number
CN102351531A
CN102351531A CN2011101746881A CN201110174688A CN102351531A CN 102351531 A CN102351531 A CN 102351531A CN 2011101746881 A CN2011101746881 A CN 2011101746881A CN 201110174688 A CN201110174688 A CN 201110174688A CN 102351531 A CN102351531 A CN 102351531A
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China
Prior art keywords
zirconia ceramics
plunger
biscuit
parts
sintering
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CN2011101746881A
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Chinese (zh)
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CN102351531B (en
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马斌
贺连英
尹声
朱力峰
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Shenzhen Jingnan Porcelain Co ltd
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Shenzhen Jingnan Porcelain Co ltd
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Publication of CN102351531A publication Critical patent/CN102351531A/en
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Abstract

The invention provides a zirconia ceramic plunger and a manufacturing method thereof. The zirconia ceramic plunger comprises raw materials of, by weight, 92+/-0.1 parts of zirconia, 5+/-0.1 parts of yttrium oxide and 3+/-0.1 parts of thulium oxide. The manufacturing method comprises steps of: step 1, raw material preparation; step 2, biscuit formation; step 3, charging; step 4, sintering; step 5, cooling; step 6, moulding by machining; step 7, surface light and fineness treatment to obtain the zirconia ceramic plunger. The zirconia ceramic plunger of the present invention utilizes a high pressure oscillation high temperature sintering technology; according to pressurization and the pressurization oscillation technology, the sintered zirconia ceramic plunger is more compact, has no pore or crack, so as to enhance product performance, improve production quality and guarantee stability of production quality.

Description

Zirconia ceramics plunger and preparation method thereof
Technical field
The present invention relates to mechanical means and make the field, relate in particular to a kind of zirconia ceramics plunger and preparation method thereof.
Background technology
At present, the manufacturing technology of equipment such as the high pressure plunger pump that domestic enterprise can grasp and produce, hydraulic planger pump, high pressure water cutter, cleaning machine, but higfh-tension ceramics plunger China can't produce.
Have zirconia ceramics plunger product now in high-end market; As the zirconia ceramics plunger that reaches 300-400Mpa pressure is mainly provided by offshore company; The external zirconia ceramics plunger producer that produces adopts the hot isostatic pressing mode mostly mainly in the U.S. and Germany, has reached fine quality.And the zirconia ceramics plunger quality product of domestic production can't be compared with the product that external manufacturer produces at all, can only occupy low-end market.Because homemade ceramic plunger is of poor quality, with low content of technology, can't satisfy market demand at all, therefore still to depend on import.
Mainly there is the problem of two aspects in domestic production zirconia ceramics plunger: the one, and the restriction of production unit.Because the stupalith production unit belongs to ceramic production technology equipment, and is strongly professional, requires the designer must be proficient in the stupalith technology, also to be proficient in the design of agglomerating plant simultaneously.So the difficulty that can't solve production unit is a universal phenomenon.If depend on the import production unit, cost an arm and a leg, the maintenance cost that can't bear especially, production cost is very high.The second, the technical matters research of ceramic new material and the problem of using.Domestic ceramic new material research lags behind developed countries such as America and Europe, and the high barrier of the high investment of novel material and technology causes China enterprise unhappy in the ceramic new material development.
Summary of the invention
The object of the present invention is to provide a kind of zirconia ceramics plunger, have high-quality, high strength, high-density, superior performance.
Another object of the present invention is to provide a kind of making method of above-mentioned zirconia ceramics plunger, adopt two-way concussion sintering process, make the stupalith density that is sintered reach ultimate attainment, superior performance.
Be to realize above-mentioned purpose, the present invention provides a kind of zirconia ceramics plunger, and its raw material comprises that component and weight part thereof are following: 92 ± 0.1 parts of zirconium whites, 5 ± 0.1 parts of yttrium oxides, and 3 ± 0.1 parts of thulium oxides.
The present invention also provides a kind of making method of above-mentioned zirconia ceramics plunger, comprises the steps:
Step 1, preparation of raw material: 92 ± 0.1 parts of zirconium whites, 5 ± 0.1 parts of yttrium oxides, and 3 ± 0.1 parts of thulium oxides;
Step 2, biscuit are shaped: adopt the dry-pressing mode that raw material is made into the rectangular parallelepiped biscuit;
Step 3, charging: biscuit is put into sintering oven, vacuumize, inflated with nitrogen;
Step 4, sintering: adopt the pressurization concussion that biscuit is carried out high temperature sintering;
Step 5, cooling: the biscuit behind the sintering carries out naturally cooling, obtains the rectangular parallelepiped ceramic rod;
Step 6, machine add-on type: with peripheral milling to the rectangular parallelepiped ceramic rod carry out slightly, thin, ground finish;
Step 7, surface mirror processing obtain the zirconia ceramics plunger.
Also comprise step 8, link processing: adopt two chromium, 13 steel loops, internal diameter adopts the coordinating size really up to the mark of 8 silks, under 1 barometric point, is heated to 250-300 ℃; Be inserted in zirconia ceramics plunger termination; Cooling, the zirconia ceramics plunger is held in the steel loop shrinkage tightly, accomplishes link and handles.
Said biscuit length is greater than zirconia ceramics plungers length 10mm, and the biscuit width is greater than zirconia ceramics diameter of plunger 3mm, and the biscuit height is the twice height of zirconia ceramics diameter of plunger.
Said step 4 sintering: when temperature is added to 1050 ℃-1150 ℃, add 150kg/cm 2Concussion adds 250kg/cm when temperature is added to 1510 ℃-1600 ℃ 2Concussion, frequency is 100Hz, constant temperature was kept 2 hours and was kept concussion in 1510 ℃ of-1600 ℃ of temperature ranges.
The invention has the beneficial effects as follows: zirconia ceramics plunger of the present invention; Used high pressure concussion high temperature sintering technology; Through pressurization and employing pressurization concussion technology; Make and to be sintered the zirconia ceramics plunger matter is close more; Pore-free, no fine fisssure; Improve performance of products, improved the quality of production, guaranteed the stability of production quality; Produce high performance zirconia ceramics plunger through making method of the present invention, solved the problem that high performance zirconia ceramics plunger depends on import.
Description of drawings
Below in conjunction with accompanying drawing, describe in detail through specific embodiments of the invention, will make technical scheme of the present invention and other beneficial effects apparent.
In the accompanying drawing,
Fig. 1 is the making method schema of zirconia ceramics plunger of the present invention.
Embodiment
The present invention provides a kind of zirconia ceramics plunger, and its raw material comprises that component and weight part thereof are following: 92 ± 0.1 parts of zirconium whites, 5 ± 0.1 parts of yttrium oxides, and 3 ± 0.1 parts of thulium oxides.That this zirconia ceramics plunger has is high-quality, high strength, high-density, superior performance.
As shown in Figure 1, the making method of zirconia ceramics plunger of the present invention comprises the steps:
Step 1, preparation of raw material: take by weighing the granulation powder by a certain percentage, include 92 ± 0.1 parts of zirconium whites, 5 ± 0.1 parts of yttrium oxides, reach 3 ± 0.1 parts of thulium oxides.
Step 2, biscuit are shaped: adopt the dry-pressing mode that raw material is made into the rectangular parallelepiped biscuit; Said biscuit length is the length+10mm of its follow-up zirconia ceramics plunger of processing, and the biscuit width is zirconia ceramics diameter of plunger+3mm, and the biscuit height is the twice height of zirconia ceramics diameter of plunger.
Step 3, charging: biscuit is put into HPV (two-way concussion) sintering oven, vacuumize inflated with nitrogen.
Step 4, HPV sintering: adopt the pressurization concussion that biscuit is carried out high temperature sintering; , temperature adds 150kg/cm when being added to 1050 ℃-1150 ℃ 2Concussion adds 250kg/cm when temperature is added to 1510 ℃-1600 ℃ 2Concussion, frequency is 100Hz, and keeps 2 hours and keep concussion at 1510 ℃ of-1600 ℃ of constant temperature, and said concussion fully tamps base substrate for concussion simultaneously up and down, and the one-tenth porcelain is tightr, and density reaches capacity.
Step 5, cooling: utilize the naturally cooling in the sintering oven to make the biscuit cooling in it, obtain the rectangular parallelepiped ceramic rod.
Step 6, machine add-on type: with peripheral milling to the rectangular parallelepiped ceramic rod carry out slightly, thin, ground finish, obtain the zirconia ceramics plunger, guarantee the mechanical dimension of zirconia ceramics plunger, meet the specification of zirconia ceramics plunger.
Step 7, surface mirror processing: the zirconia ceramics plunger is carried out surperficial light processing and surface smoothness processing.
Step 8, link are handled: adopt two chromium, 13 steel loops, internal diameter adopts the coordinating size really up to the mark of 8 silks, under 1 barometric point, is heated to 250-300 ℃; Be inserted in zirconia ceramics plunger termination; Naturally cooling, the zirconia ceramics plunger is held in the steel loop shrinkage tightly, accomplishes link and handles.Wherein two chromium, 13 steel loops are the φ 31x14 that adopts two chromium, 13 steel material to process, and internal diameter is the steel loop of φ 22.22.
Zirconia ceramics of the present invention can be referred to as super zirconium white, and the performance comparison such as the following table 1 of existing common zirconia ceramics:
Table 1
Performance index Common zirconium white Super zirconium white
Bending strength (MPa) ≤900 1500
Fracture toughness property MPam ≤11 ≥18
Hardness HRA 86 ≥90
Density (g/cm 3) 6.03 6.07~6.10
Pore-free is arranged Have Do not have
Can know that from last table zirconia ceramics of the present invention is fine and close more, pore-free, no fine fisssure improve performance of products, the quality of production, the stability of assurance product.
In sum; Zirconia ceramics plunger of the present invention; Used high pressure concussion high temperature sintering technology; Through pressurization and employing pressurization concussion technology; Make to be sintered the zirconia ceramics plunger matter is close more that pore-free, no fine fisssure have improved performance of products; Improve the quality of production, guaranteed the stability of production quality; Produce high performance zirconia ceramics plunger through making method of the present invention, solved the problem that high performance zirconia ceramics plunger depends on import.
The above; For the person of ordinary skill of the art; Can make other various corresponding changes and distortion according to technical scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the protection domain of accompanying Claim of the present invention.

Claims (5)

1. a zirconia ceramics plunger is characterized in that, its raw material comprises that component and weight part thereof are following: 92 ± 0.1 parts of zirconium whites, 5 ± 0.1 parts of yttrium oxides, and 3 ± 0.1 parts of thulium oxides.
2. the making method of a zirconia ceramics plunger as claimed in claim 1 is characterized in that, comprises the steps:
Step 1, preparation of raw material: 92 ± 0.1 parts of zirconium whites, 5 ± 0.1 parts of yttrium oxides, and 3 ± 0.1 parts of thulium oxides;
Step 2, biscuit are shaped: adopt the dry-pressing mode that raw material is made into the rectangular parallelepiped biscuit;
Step 3, charging: biscuit is put into sintering oven, vacuumize, inflated with nitrogen;
Step 4, sintering: adopt the pressurization concussion that biscuit is carried out high temperature sintering;
Step 5, cooling: the biscuit behind the sintering carries out naturally cooling, obtains the rectangular parallelepiped ceramic rod;
Step 6, machine add-on type: with peripheral milling to the rectangular parallelepiped ceramic rod carry out slightly, thin, ground finish;
Step 7, surface mirror processing obtain the zirconia ceramics plunger.
3. making method as claimed in claim 2; It is characterized in that; Also comprise step 8, link processing: adopt two chromium, 13 steel loops; Internal diameter adopts the coordinating size really up to the mark of 8 silks; Under 1 barometric point, be heated to 250-300 ℃, be inserted in zirconia ceramics plunger termination, cooling; The zirconia ceramics plunger is held in the steel loop shrinkage tightly, accomplishes link and handles.
4. making method as claimed in claim 2 is characterized in that, said biscuit length is greater than zirconia ceramics plungers length 10mm, and the biscuit width is greater than zirconia ceramics diameter of plunger 3mm, and the biscuit height is the twice height of zirconia ceramics diameter of plunger.
5. making method as claimed in claim 2 is characterized in that, said step 4 sintering: when temperature is added to 1050 ℃-1150 ℃, add 150kg/cm 2Concussion adds 250kg/cm when temperature is added to 1510 ℃-1600 ℃ 2Concussion, frequency is 100Hz, constant temperature was kept 2 hours and was kept concussion in 1510 ℃-1600 temperature ranges.
CN 201110174688 2011-06-24 2011-06-24 Zirconia ceramic plunger and manufacturing method thereof Expired - Fee Related CN102351531B (en)

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Application Number Priority Date Filing Date Title
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CN102351531B CN102351531B (en) 2013-11-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106270487A (en) * 2016-08-30 2017-01-04 宁波拓发汽车零部件有限公司 A kind of electromagnetism connects valve
CN106363179A (en) * 2016-08-30 2017-02-01 宁波拓发汽车零部件有限公司 Bottom valve
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6149073A (en) * 1994-05-18 2000-11-21 Cummins Engine Company, Inc. Ceramic plunger for internal combustion engine high pressure fuel system
CN1458119A (en) * 2003-04-30 2003-11-26 天津大学 Process for preparing polynary zirconia toughened ceramic plunger of oil pump
CN101045631A (en) * 2006-03-03 2007-10-03 中国科学院上海硅酸盐研究所 Zirconium oxide ceramic material of ytterbium oxide and yttrium oxide costabilize
CN102060530A (en) * 2010-11-16 2011-05-18 上海材料研究所 Preparation method of compact zirconia ceramic plunger

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6149073A (en) * 1994-05-18 2000-11-21 Cummins Engine Company, Inc. Ceramic plunger for internal combustion engine high pressure fuel system
CN1458119A (en) * 2003-04-30 2003-11-26 天津大学 Process for preparing polynary zirconia toughened ceramic plunger of oil pump
CN101045631A (en) * 2006-03-03 2007-10-03 中国科学院上海硅酸盐研究所 Zirconium oxide ceramic material of ytterbium oxide and yttrium oxide costabilize
CN102060530A (en) * 2010-11-16 2011-05-18 上海材料研究所 Preparation method of compact zirconia ceramic plunger

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106270487A (en) * 2016-08-30 2017-01-04 宁波拓发汽车零部件有限公司 A kind of electromagnetism connects valve
CN106363179A (en) * 2016-08-30 2017-02-01 宁波拓发汽车零部件有限公司 Bottom valve
CN106270487B (en) * 2016-08-30 2018-08-10 宁波拓发汽车零部件有限公司 A kind of electromagnetism connection valve
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

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