CN104496423A - 99 alumina ceramic cylinder sleeve inner liner material used for petroleum drilling well and preparation method thereof - Google Patents
99 alumina ceramic cylinder sleeve inner liner material used for petroleum drilling well and preparation method thereof Download PDFInfo
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- CN104496423A CN104496423A CN201410659554.2A CN201410659554A CN104496423A CN 104496423 A CN104496423 A CN 104496423A CN 201410659554 A CN201410659554 A CN 201410659554A CN 104496423 A CN104496423 A CN 104496423A
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Abstract
The invention relates to a 99 alumina ceramic cylinder sleeve inner liner material used for petroleum drilling well and a preparation method thereof, which belongs to the technical field of ceramic material. The inner liner material comprises the following raw materials by weight percentage: 99.0-99.9% of alumina, 0.01-0.9% of magnesium oxide and 0.05-0.2% of silicon dioxide. According to the invention, the method employs a cold isostatic pressing technology, and steps of ball milling, granulation, moulding and roasting are carried out. The material has the advantages of low cost, excellent mechanical properties and chemical stability, can satisfy the rigorous requirement of corrosion resistance, high intensity and high hardness of a petroleum bore hole pump under harsh working condition. The invention also provides a simple preparation method, and is suitable for industrial production.
Description
Technical field
The present invention relates to a kind of petroleum drilling 99 alumina ceramic liner inner lining materials and preparation method thereof, belong to technical field of ceramic material.
Background technology
Cylinder sleeve of drilling pump is as one of the main consumable accessory of drill pump, and the quality of its quality and performance directly has influence on normally carrying out of drilling well work.It is overcoat that China mainly uses with highquality carbon steel, take high carbon high chromium alloy cast iron as the bi-metal liner of liner, when drill pump runs, the to-and-fro movement of piston in cylinder sleeve makes the mud containing a large amount of hard particles suck and get rid of cylinder sleeve bore, this have huge corrosive mud to make Metallic cylinder easy to wear, and work-ing life seriously reduces.At present, some have high temperature resistant, corrosion-resistant, the silicon carbide of high strength, high tenacity, doped aluminium, zirconia ceramics and have been applied in cylinder sleeve and have been lining with, but expensive due to it, are not used widely.
Summary of the invention
The object of this invention is to provide a kind of petroleum drilling 99 alumina ceramic liner inner lining materials, its raw materials cost is low, there is excellent mechanical property and chemical stability, can meet that oil drilling pump is corrosion-resistant under bad working environments condition, the rigors of high strength, high rigidity; Invention also provides simple preparation method, be applicable to suitability for industrialized production.
Petroleum drilling of the present invention 99 alumina ceramic liner inner lining materials, are made up of the raw material of following weight percentage: aluminum oxide 99.0 ~ 99.9%, magnesium oxide 0.01 ~ 0.9%, silicon-dioxide 0.05 ~ 0.2%.
Described aluminum oxide is Calcined polishing aluminum oxide, its former brilliant size≤0.2um.
Described petroleum drilling is with in 99 alumina ceramic liner inner lining materials, and alumina content is up to more than 99%, and aluminum oxide and magnesium oxide, silicon-dioxide define ternary system.
The magnesium oxide added plays the effect of growth inhibitor, it can form spinel with aluminum oxide on crystal boundary, on this crystal boundary, the formation of second-phase can the abnormal growth of inhibited oxidation aluminium grain, thus make alumina grain homogenizing more, reduce sintering temperature, decrease the pore produced in alumina sintering process, make sintering densification more; The silicon-dioxide added can be formed on crystal boundary with aluminum oxide expand evenly, hardness greatly, the micro-mullite of resist chemical, in sintering process, silicon-dioxide and aluminum oxide form liquid phase and reduce sintering temperature, serve the effect of acceleration of sintering.In this ternary system, mullite, the spinel of aluminum oxide and generation form stable phase further.
The petroleum drilling of the present invention preparation method of 99 alumina ceramic liner inner lining materials, comprises the following steps:
(1) ball milling: first add the raw alumina of formula ratio, magnesium oxide and silicon-dioxide, then add aluminum oxide ballstone and water, then adds binding agent and dispersion agent carries out ball milling, obtains slurry;
(2) granulation: the slurry that step (1) obtains is carried out spray drying granulation, obtains pelletizing; Gained pelletizing sieves after deironing, humidification, old, stand-by;
(3) shaping: to get old stand-by pelletizing in step (2) and load in mould, adopt cold isostatic compaction technique, obtain green compact;
(4) burn till: loaded in kiln by step (3) gained green compact and burn till, namely kiln discharge obtains petroleum drilling 99 alumina ceramic liner inner lining materials.
In step (1), the diameter of aluminum oxide ballstone is 6-20mm; The mass ratio of raw material, aluminum oxide ballstone and water is 1:1 ~ 4:0.2 ~ 0.7; The median size of gained slurry is 0.5 ~ 1.2 μm.
Described binding agent is polyvinyl alcohol, polyacrylamide, Soxylat A 25-7 or sodium lignosulfonate, and binding agent add-on is 0.1 ~ 0.5% of the gross weight of aluminum oxide, magnesium oxide, silicon-dioxide, aluminum oxide ballstone and water.
Described dispersion agent is polyacrylate, polyacrylic acid, poly carboxylic acid lipid or sulfonic acid system macromolecule dispersing agent, and dispersion agent add-on is 0.5% ~ 1.0% of the gross weight of aluminum oxide, magnesium oxide, silicon-dioxide, aluminum oxide ballstone and water.
In step (2), granulation process carries out in spray drying granulation tower, and spray drying granulation tower inlet temperature is 300 ~ 500 DEG C, and air outlet temperature is 150 ~ 300 DEG C; The pelletizing granularity obtained through mist projection granulating is 60 ~ 120 μm; The weight adding water when adding wet treatment is 0.5 ~ 3% of the pelletizing weight after deironing.
In step (3), isostatic cool pressing pressure first rises to 100 ~ 160MPa by 0MPa, pressurize 5 ~ 20 seconds; 70 ~ 110MPa is decompressed to again, pressurize 5 ~ 20 seconds by 100 ~ 160MPa; Then 30 ~ 60MPa is decompressed to by 70 ~ 110MPa, pressurize 5 ~ 20 seconds; Finally be decompressed to 0MPa by 30 ~ 60MPa.
In step (4), when green compact are loaded in kiln, the upper aluminum oxide gasket ring of pad below green compact; Firing temperature is 1600 ~ 1700 DEG C, and soaking time is 2 ~ 4h.
Ball milling is the process making raw material powder refinement and homogenizing, the dispersion agent added in mechanical milling process effectively can improve slip powder surface property, reduce slip viscosity, obtain rheological good, be uniformly dispersed, slurry that solid content is high and stable, thus reach the object improving grinding effect, reduce water consumption, reduce power consumption.The effect of the another kind of additive binding agent added in mechanical milling process reduces intergranular frictional force in product molding process, increases the plasticity-of ceramic material and the height cohesiveness of moulding process, thus improve green strength.
The present invention adopts wet pocket type cold isostatic compaction technology, is first loaded by powder in deformable rubber coating, is applied each to uniform pressure, after pressing process terminates, then taken out in container by the rubber coating of base substrate by liquid.
In the preparation method of described petroleum drilling with 99 alumina ceramic liner inner lining materials, the firing temperature of employing is 1600 ~ 1700 DEG C, not only energy-conservation, and the stupalith uniform particle sizes burnt till and less, active high; And domestic technique firing temperature used is all higher than 1700 DEG C, and the particle diameter of the stupalith burnt till is comparatively large, and activity is lower.
Petroleum drilling prepared by the present invention is high with 99 alumina ceramic liner inner lining material thermal conductivitys, when it is for petroleum drilling cylinder sleeve liner, the a large amount of heat storage produced due to reciprocating motion of the pistons in process of production can be got up, be convenient to the mud cooling of cylinder sleeve inside, effectively extend the life-span of rubber piston.
The present invention has following beneficial effect:
(1) raw material sources of the present invention's employing are wide, and cost is low;
(2) the petroleum drilling 99 alumina ceramic liner inner lining materials prepared of the present invention, there is the excellent advantage such as mechanical property, chemical stability, acid-alkali-corrosive-resisting, its 3 folding strength>=380MPa, Vickers' hardness>=14.2GPa, fracture toughness property>=5MPa/m
2;
(3) adopt the alumina ceramic liner inner lining material prepared of the present invention, during cylinder sleeve liner for petroleum drilling, hardness is high, and abrasion resistance properties is good, and thermal conductivity is high, effectively can extend the work-ing life of cylinder sleeve liner;
(4) petroleum drilling described in is simple by the preparation method of 99 alumina ceramic liner inner lining materials, is applicable to suitability for industrialized production.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but it does not limit enforcement of the present invention.
Embodiment 1
The petroleum drilling preparation method of 99 alumina ceramic liner inner lining materials, comprises the following steps:
(1) ball milling: first the raw material of 99Kg aluminum oxide, 0.9Kg magnesium oxide, 0.1Kg silicon-dioxide is loaded in ball mill, add aluminum oxide ballstone and 70kg water (mass ratio of raw material, aluminum oxide ballstone and water is 1:4:0.7) that 400kg diameter is 6mm again, then 0.47Kg Soxylat A 25-7 and 2.35Kg polyacrylic acid is added, carry out ball milling, obtain required slurry, the mean particle size recording slurry with particle size analyzer is 0.5 μm.
(2) granulation: the slurry that step (1) obtains is carried out spray drying granulation, obtains pelletizing; In gained pelletizing, add water (accounting for 0.5% of the pelletizing weight after deironing), mixing after old 2 days stand-by; Spray drying granulation tower inlet temperature is set to 500 DEG C, and air outlet temperature is set to 300 DEG C; The pelletizing granularity obtained through mist projection granulating is 120 μm.
(3) shaping: to get the pelletizing that in step (2), sink-float is stand-by and load in mould, adopt cold isostatic compaction technique, obtain green compact; Isostatic cool pressing pressure curve used is: pressure first rises to 160MPa by 0MPa, pressurize 5 seconds gradually; 110MPa is decompressed to gradually again, pressurize 5 seconds by 160MPa; Then 60MPa is decompressed to gradually by 110MPa, pressurize 5 seconds; Finally be decompressed to 0MPa gradually by 60MPa.
(4) burn till: loaded by step (3) gained green compact in kiln, the upper aluminum oxide gasket ring of pad below green compact, firing temperature is 1650 DEG C, and soaking time is 2h, and namely kiln discharge obtains petroleum drilling 99 alumina ceramic liner inner lining materials.
Carry out performance test to the petroleum drilling of preparation with 99 alumina ceramic liner inner lining materials, result is: Vickers' hardness is 15.0GPa, and bending strength is 390MPa, and fracture toughness property is 5.5MPa/m
2.
Embodiment 2
The petroleum drilling preparation method of 99 alumina ceramic liner inner lining materials, comprises the following steps:
(1) ball milling: first the raw material of 99.9Kg aluminum oxide, 0.05Kg magnesium oxide, 0.05Kg silicon-dioxide is loaded in ball mill, add aluminum oxide ballstone and 50kg water (mass ratio of raw material, aluminum oxide ballstone and water is 1:1.5:0.5) that 150kg diameter is 20mm again, then 0.60Kg polyvinyl alcohol and 2.10Kg sodium polyacrylate is added, carry out ball milling, obtain required slurry, the mean particle size recording slurry with particle size analyzer is 1.0 μm.
(2) granulation: the slurry that step (1) obtains is carried out spray drying granulation, obtains pelletizing; Water (accounting for 3% of the pelletizing weight after deironing) is added, latter old 3 days of mixing in gained pelletizing, stand-by; Spray drying granulation tower inlet temperature is set to 300 DEG C, and air outlet temperature is set to 150 DEG C; The pelletizing granularity obtained through mist projection granulating is 100 μm.
(3) shaping: to get the pelletizing that in step (2), sink-float is stand-by and load in mould, adopt cold isostatic compaction technique, obtain green compact; Isostatic cool pressing pressure curve used is: pressure first rises to 100MPa by 0MPa, pressurize 15 seconds gradually; 70MPa is decompressed to gradually again, pressurize 15 seconds by 100MPa; Then 30MPa is decompressed to gradually by 70MPa, pressurize 15 seconds; Finally be decompressed to 0MPa gradually by 30MPa.
(4) burn till: loaded by step (3) gained green compact in kiln, the upper aluminum oxide gasket ring of pad below green compact, firing temperature is 1700 DEG C, and soaking time is 4h, and namely kiln discharge obtains petroleum drilling 99 alumina ceramic liner inner lining materials.
Carry out performance test to the petroleum drilling of preparation with 99 alumina ceramic liner inner lining materials, result is: Vickers' hardness is 15.3GPa, and bending strength is 410MPa, and fracture toughness property is 5.8MPa/m
2.
Embodiment 3
The petroleum drilling preparation method of 99 alumina ceramic liner inner lining materials, comprises the following steps:
(1) ball milling: first the raw material of 99.6Kg aluminum oxide, 0.2Kg magnesium oxide, 0.2Kg silicon-dioxide is loaded in ball mill, add aluminum oxide ballstone and 20kg water (mass ratio of raw material, aluminum oxide ballstone and water is 1:1:0.2) that 100kg diameter is 15mm again, then 1.1Kg sodium lignosulfonate is added and 2.2Kg gathers naphthalene formaldehyde sulfonate, carry out ball milling, obtain required slurry, the mean particle size recording slurry with particle size analyzer is 1.2 μm.
(2) granulation: the slurry that step (1) obtains is carried out spray drying granulation, obtains pelletizing; Water (accounting for 2.0% of the pelletizing weight after deironing) is added, latter old 4 days of mixing in gained pelletizing, stand-by; Spray drying granulation tower inlet temperature is set to 400 DEG C, and air outlet temperature is set to 200 DEG C; The pelletizing granularity obtained through mist projection granulating is 60 μm.
(3) shaping: to get the pelletizing that in step (2), sink-float is stand-by and load in mould, adopt cold isostatic compaction technique, obtain green compact; Isostatic cool pressing pressure curve used is: pressure first rises to 130MPa by 0MPa, pressurize 20 seconds gradually; 90MPa is decompressed to gradually again, pressurize 20 seconds by 130MPa; Then 50MPa is decompressed to gradually by 90MPa, pressurize 20 seconds; Finally be decompressed to 0MPa gradually by 50MPa.
(4) burn till: loaded by step (3) gained green compact in kiln, the upper aluminum oxide gasket ring of pad below green compact, firing temperature is 1600 DEG C, and soaking time is 3h, and namely kiln discharge obtains petroleum drilling 99 alumina ceramic liner inner lining materials.
Carry out performance test to the petroleum drilling of preparation with 99 alumina ceramic liner inner lining materials, result is: Vickers' hardness is 16.0GPa, and bending strength is 440MPa, and fracture toughness property is 6.0MPa/m
2.
Claims (10)
1. petroleum drilling 99 alumina ceramic liner inner lining materials, is characterized in that being made up of the raw material of following weight percentage: aluminum oxide 99.0 ~ 99.9%, magnesium oxide 0.01 ~ 0.9%, silicon-dioxide 0.05 ~ 0.2%.
2. petroleum drilling according to claim 1 99 alumina ceramic liner inner lining materials, is characterized in that: aluminum oxide is Calcined polishing aluminum oxide, its former brilliant size≤0.2um.
3. the preparation method for 99 alumina ceramic liner inner lining materials of the petroleum drilling described in claim 1 or 2, is characterized in that comprising the following steps:
(1) ball milling: first add the raw alumina of formula ratio, magnesium oxide and silicon-dioxide, then add aluminum oxide ballstone and water, then adds binding agent and dispersion agent carries out ball milling, obtains slurry;
(2) granulation: the slurry that step (1) obtains is carried out spray drying granulation, obtains pelletizing; Gained pelletizing sieves after deironing, humidification, old, stand-by;
(3) shaping: to get old stand-by pelletizing in step (2) and load in mould, adopt cold isostatic compaction technique, obtain green compact;
(4) burn till: loaded in kiln by step (3) gained green compact and burn till, namely kiln discharge obtains petroleum drilling 99 alumina ceramic liner inner lining materials.
4. the petroleum drilling according to claim 3 preparation method of 99 alumina ceramic liner inner lining materials, is characterized in that: in step (1), the diameter of aluminum oxide ballstone is 6-20mm; The mass ratio of raw material, aluminum oxide ballstone and water is 1:1 ~ 4:0.2 ~ 0.7.
5. the petroleum drilling according to claim 3 preparation method of 99 alumina ceramic liner inner lining materials, it is characterized in that: binding agent is polyvinyl alcohol, polyacrylamide, Soxylat A 25-7 or sodium lignosulfonate, binding agent add-on is 0.1 ~ 0.5% of the gross weight of aluminum oxide, magnesium oxide, silicon-dioxide, aluminum oxide ballstone and water.
6. the petroleum drilling according to claim 3 preparation method of 99 alumina ceramic liner inner lining materials, it is characterized in that: dispersion agent is polyacrylate, polyacrylic acid, poly carboxylic acid lipid or sulfonic acid system macromolecule dispersing agent, and dispersion agent add-on is 0.5% ~ 1.0% of the gross weight of aluminum oxide, magnesium oxide, silicon-dioxide, aluminum oxide ballstone and water.
7. the petroleum drilling according to claim 3 preparation method of 99 alumina ceramic liner inner lining materials, is characterized in that: the median size of step (1) gained slurry is 0.5 ~ 1.2 μm.
8. the petroleum drilling according to claim 3 preparation method of 99 alumina ceramic liner inner lining materials, it is characterized in that: in step (2), granulation process carries out in spray drying granulation tower, spray drying granulation tower inlet temperature is 300 ~ 500 DEG C, and air outlet temperature is 150 ~ 300 DEG C; The pelletizing granularity obtained through mist projection granulating is 60 ~ 120 μm; The weight adding water when adding wet treatment is 0.5 ~ 3% of the pelletizing weight after deironing.
9. the petroleum drilling according to claim 3 preparation method of 99 alumina ceramic liner inner lining materials, is characterized in that: in step (3), and isostatic cool pressing pressure first rises to 100 ~ 160MPa by 0MPa, pressurize 5 ~ 20 seconds; 70 ~ 110MPa is decompressed to again, pressurize 5 ~ 20 seconds by 100 ~ 160MPa; Then 30 ~ 60MPa is decompressed to by 70 ~ 110MPa, pressurize 5 ~ 20 seconds; Finally be decompressed to 0MPa by 30 ~ 60MPa.
10. the petroleum drilling according to claim 3 preparation method of 99 alumina ceramic liner inner lining materials, is characterized in that: in step (4), when being loaded in kiln by green compact, the upper aluminum oxide gasket ring of pad below green compact; Firing temperature is 1600 ~ 1700 DEG C, and soaking time is 2 ~ 4h.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106220149A (en) * | 2016-07-27 | 2016-12-14 | 山东硅元新型材料有限责任公司 | Ultra-precision Turning and ultra precise measurement instrument ceramic guide rail and preparation method thereof |
| CN106337831A (en) * | 2016-10-12 | 2017-01-18 | 合肥精创陶瓷设备科技有限公司 | High-technology ceramic pump body used for pump and manufacturing method thereof |
| CN108101522A (en) * | 2017-12-28 | 2018-06-01 | 宁波东联密封件有限公司 | A kind of aluminium oxide ceramics |
| CN109761590A (en) * | 2019-03-18 | 2019-05-17 | 中北大学 | A kind of high-temperature resistant aluminium oxide composite ceramic material and preparation method thereof |
| CN109896865A (en) * | 2017-12-08 | 2019-06-18 | 中国科学院上海硅酸盐研究所 | A method of improving aluminium oxide ceramics toughness |
| CN111499359A (en) * | 2020-05-13 | 2020-08-07 | 珠海粤博佳新材料有限公司 | Production process of alumina ceramic |
| CN111732421A (en) * | 2020-05-25 | 2020-10-02 | 浙江爱科新材料有限公司 | Preparation method of alumina ceramic composite powder |
| CN112456983A (en) * | 2020-12-23 | 2021-03-09 | 太仓市华诚纺织配件有限公司 | Forming process of high-wear-resistance yarn guide for elasticizer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1448365A (en) * | 2003-04-28 | 2003-10-15 | 青岛大学 | Process for preparing lining of ceramic cylinder jacket |
| CN1730596A (en) * | 2005-08-18 | 2006-02-08 | 宁波东联密封件有限公司 | High purity aluminum oxide seal ring and its production method |
| CN103553577A (en) * | 2013-10-22 | 2014-02-05 | 襄阳市金控特种陶瓷科技有限公司 | Manufacturing method of tube mill ceramic lining for alumina milling |
-
2014
- 2014-11-18 CN CN201410659554.2A patent/CN104496423A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1448365A (en) * | 2003-04-28 | 2003-10-15 | 青岛大学 | Process for preparing lining of ceramic cylinder jacket |
| CN1730596A (en) * | 2005-08-18 | 2006-02-08 | 宁波东联密封件有限公司 | High purity aluminum oxide seal ring and its production method |
| CN103553577A (en) * | 2013-10-22 | 2014-02-05 | 襄阳市金控特种陶瓷科技有限公司 | Manufacturing method of tube mill ceramic lining for alumina milling |
Non-Patent Citations (2)
| Title |
|---|
| 徐国跃: "《无机非金属材料》", 28 February 2001, 南京航空航天大学 * |
| 郭生武: ""90Al2O3缸套内衬的显微结构分析"", 《理化检验（物理分册）》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106220149A (en) * | 2016-07-27 | 2016-12-14 | 山东硅元新型材料有限责任公司 | Ultra-precision Turning and ultra precise measurement instrument ceramic guide rail and preparation method thereof |
| CN106337831A (en) * | 2016-10-12 | 2017-01-18 | 合肥精创陶瓷设备科技有限公司 | High-technology ceramic pump body used for pump and manufacturing method thereof |
| CN109896865A (en) * | 2017-12-08 | 2019-06-18 | 中国科学院上海硅酸盐研究所 | A method of improving aluminium oxide ceramics toughness |
| CN109896865B (en) * | 2017-12-08 | 2021-05-25 | 中国科学院上海硅酸盐研究所 | Method for improving toughness of aluminum oxide ceramic |
| CN108101522A (en) * | 2017-12-28 | 2018-06-01 | 宁波东联密封件有限公司 | A kind of aluminium oxide ceramics |
| CN109761590A (en) * | 2019-03-18 | 2019-05-17 | 中北大学 | A kind of high-temperature resistant aluminium oxide composite ceramic material and preparation method thereof |
| CN109761590B (en) * | 2019-03-18 | 2021-07-09 | 中北大学 | High-temperature-resistant alumina composite ceramic material and preparation method thereof |
| CN111499359A (en) * | 2020-05-13 | 2020-08-07 | 珠海粤博佳新材料有限公司 | Production process of alumina ceramic |
| CN111732421A (en) * | 2020-05-25 | 2020-10-02 | 浙江爱科新材料有限公司 | Preparation method of alumina ceramic composite powder |
| CN112456983A (en) * | 2020-12-23 | 2021-03-09 | 太仓市华诚纺织配件有限公司 | Forming process of high-wear-resistance yarn guide for elasticizer |
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