CN103396104A - Preparation method of large-size honeycomb ceramic carrier for diesel cars - Google Patents
Preparation method of large-size honeycomb ceramic carrier for diesel cars Download PDFInfo
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Abstract
The invention relates to a preparation method of a low-expansion-coefficient cordierite honeycomb ceramic based on liquid additives, which comprises the following steps: (1) preparation of powder raw material; (2) preparation of liquid blender; (3) preparation of paste material; (4) preparation of paste blank; (5) extrusion molding; (6) setting by drying; (7) post processing of blank; (8) firing of product; (9) edge grinding; and (10) skin making. By adding the edge grinding and skin making steps, the physical dimension tolerance of the carrier is small, thereby ensuring the roundness and completeness of the carrier, greatly enhancing the mechanical strength of the carrier and facilitating the packaging of the carrier.
Description
Technical field
The present invention relates to honeycomb ceramic carrier and manufacture field, be specially the preparation method of a kind of diesel vehicle with the large, honeycomb ceramic monolith.
Background technology
At present, along with the haze weather of frequent appearance, vehicle exhaust is the major cause that causes haze weather, especially diesel vehicle, and the improvement of exhaust gas from diesel vehicle has become the primary work of administering haze weather.Exhaust gas from diesel vehicle is administered DOC+DPF or the DOC+SCR technology that generally adopts, diameter, greater than the large, honeycomb ceramic monolith of high density holes (hole density is greater than the 200 orders) thin-walled (the grid wall thickness is less than 0.2mm) of 150mm, has become the stumbling-block of restriction exhaust gas from diesel vehicle control.
Automobile requires the product material to possess very low thermal expansivity with honeycomb ceramic carrier, thereby guarantees product can stand the impact of rapid heat cycle frequently and cracking do not occur.Substantially all adopt on the market at present cordierite to produce honeycomb ceramic carrier.At present the honeycomb ceramic carrier production technique is divided into two classes substantially: the first kind be directly adopt synthetic after the clinker production technology produced of levigate trichroite powder again, this technique due to the crystal of trichroite in the powder course of processing, the structure major part of cordierite crystal hexagonal columnar is destroyed, therefore in production process, substantially can not facilitate cordierite crystal C axle to extrude on direction and align at product, therefore also just can't produce the honeycomb ceramic carrier of low thermal coefficient of expansion.Equations of The Second Kind is the production technique that adopts the raw materials such as the needed kaolin of synthesis of dichroite, talcum, aluminum oxide to produce, although having possessed cordierite crystal, this technique at product, extrudes the condition that aligns on direction, but because the C axle of the cordierite crystal that wants to make synthesized in the product sintering process produces and aligns extruding on direction of product, just must be when formed product, in raw material, the raw material such as kaolin, talcum flats crystal aligns according to certain rule extruding on direction of product.
Above-mentioned Equations of The Second Kind production technique test shows that trichroite is in building-up process, the generation direction of C axle is that the flat extension direction according to the kaolin crystal generates, therefore to make the C axle of cordierite crystal in product extrude on direction and produce and align at product, will, in the formed product process, make kaolin at product, extrude generation as much as possible on direction according to the extension of flats crystal and align.
Summary of the invention
The technical problem to be solved in the present invention is to provide the preparation method of a kind of diesel vehicle with the large, honeycomb ceramic monolith, to solve the problem in background technology.
Technical problem solved by the invention realizes by the following technical solutions:
A kind of diesel vehicle preparation method of large, honeycomb ceramic monolith comprises the following steps:
(1) powder raw material preparation: the high-purity tabular talcum powder of high-purity lamellar kaolin powder, 35～45wt%, the 10～30wt% aluminum oxide powder that take 35～45wt%, take simultaneously the binding agent of above-mentioned raw materials gross weight 3～8wt% as shaping assistant, above-mentioned raw materials, binding agent are added in powder mixer and fully stir, until mix, obtain powder raw material;
(2) liquid blender preparation: take the powder raw material gross weight 20～35wt% water, 0.1～1.5wt% dispersion agent, the 0.5～2.5wt% lubricant that obtain in step (1), above-mentioned dispersion agent and lubricant slowly are added to the water and stir, until dispersion agent and lubricant are dissolved in water, obtain liquid blender;
(3) pug preparation: the powder raw material that step (1) is mixed is put into kneader and is rubbed, and sprays into simultaneously the liquid blender that step (2) obtains, and powder raw material becomes clod gradually, after the plasticity-of clod is stable, namely completes the pug preparation;
(4) moulded pottery not yet put in a kiln to bake preparation: the pug that step (3) is obtained is put into vacuum pugmill and is carried out the vacuum mud refining, vacuum tightness in the mud refining process≤-0.09MPa, obtain the moulded pottery not yet put in a kiln to bake supporting with forming machine barrel specification; If moulded pottery not yet put in a kiln to bake has demixing phenomenon, can adopt and repeatedly repeat the mud refining mode moulded pottery not yet put in a kiln to bake is met the demands;
(5) extrusion moulding: the moulded pottery not yet put in a kiln to bake that step (4) obtains is put into to vacuum-extruder, extrude out the honeycomb ceramic carrier biscuit of diameter greater than 150mm by mould;
(6) dryness finalization: the honeycomb ceramic carrier biscuit that step (5) is obtained is put into microwave oven and is carried out heat drying, until dry water ratio in base substrate≤2% that completes, from microwave oven, taking out;
(7) base substrate post-treatment: after the honeycomb ceramic carrier biscuit after step (6) dryness finalization is put to chi according to the ratio of burning till contraction, the two ends redundance is cut away;
(8) product burns till: the honeycomb ceramic carrier biscuit that processes according to dimensional requirement in step (7) is put into to kiln and burn till, firing period is 25～120 hours, firing temperature is 1360 ℃～1450 ℃, and soaking time is 4～8 hours, obtains the honeycomb ceramic carrier work in-process;
(9) edging: the honeycomb ceramic carrier work in-process that obtain in step (8) are placed on the cylindrical grinding machine, be ground into than the little 2～10mm of step (8) work in-process diameter, roundness less than not having of 1mm honeycomb ceramic carrier rindy, guarantee the roundness of carrier;
(10) make skin: the honeycomb ceramic carrier rindy that do not have that obtains in step (9) is placed on skin-making machine, and it is the crust of 1～5mm that the side after grinding applies last layer thickness with mud, obtains large, honeycomb ceramic monolith finished product; Owing to having applied crust, the physical strength of carrier meets service requirements.
The present invention is on the production technique basis of legacy cellular pottery, increase edging and made the skin operation, because surpassing honeycomb ceramic carrier its roundness in the extrusion moulding process of 150mm, diameter can't guarantee, when the diameter of honeycomb ceramic carrier surpasses 200mm, carrier is difficult to produce flawless crust when moulding.Excessive and the crust defect of the roundness of honeycomb ceramic carrier too much all can reduce the physical strength of carrier greatly, and brings very large difficulty to carrier package.
Beneficial effect:
The present invention has increased edging and has made the skin operation, makes carrier physical dimension tolerance little, has guaranteed roundness and the integrity of carrier, greatly improves the physical strength of carrier, has facilitated carrier package.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with specific embodiment, further set forth the present invention.
Embodiment 1
A kind of diesel vehicle preparation method of large, honeycomb ceramic monolith comprises the following steps:
(1) powder raw material preparation: the high-purity tabular talcum powder of high-purity lamellar kaolin powder, 35～45wt%, the 10～30wt% aluminum oxide powder that take 35～45wt%, take simultaneously the binding agent of above-mentioned raw materials gross weight 3～8wt% as shaping assistant, above-mentioned raw materials, binding agent are added in powder mixer and fully stir, until mix, obtain powder raw material;
(2) liquid blender preparation: take the powder raw material gross weight 20～35wt% water, 0.1～1.5wt% dispersion agent, the 0.5～2.5wt% lubricant that obtain in step (1), above-mentioned dispersion agent and lubricant slowly are added to the water and stir, until dispersion agent and lubricant are dissolved in water, obtain liquid blender;
(3) pug preparation: the powder raw material that step (1) is mixed is put into kneader and is rubbed, and sprays into simultaneously the liquid blender that step (2) obtains, and powder raw material becomes clod gradually, after the plasticity-of clod is stable, namely completes the pug preparation;
(4) moulded pottery not yet put in a kiln to bake preparation: the pug that step (3) is obtained is put into vacuum pugmill and is carried out the vacuum mud refining, vacuum tightness in the mud refining process≤-0.09MPa, obtain the moulded pottery not yet put in a kiln to bake supporting with forming machine barrel specification; If moulded pottery not yet put in a kiln to bake has demixing phenomenon, can adopt and repeatedly repeat the mud refining mode moulded pottery not yet put in a kiln to bake is met the demands;
(5) extrusion moulding: the moulded pottery not yet put in a kiln to bake that step (4) obtains is put into to vacuum-extruder, extrude out by mould the incomplete honeycomb ceramic carrier biscuit of crust that diameter is 215mm;
(6) dryness finalization: the honeycomb ceramic carrier biscuit that step (5) is obtained is put into microwave oven and is carried out heat drying, until dry water ratio in base substrate≤2% that completes, from microwave oven, taking out;
(7) base substrate post-treatment: the honeycomb ceramic carrier biscuit after step (6) dryness finalization, according to after burning till and being punctured into 1.5% ratio and putting chi, is cut away the two ends redundance, is highly 115mm after processing;
(8) product burns till: the honeycomb ceramic carrier biscuit that processes according to dimensional requirement in step (7) is put into to kiln and burn till, firing period is 86 hours, firing temperature is 1425 ℃, soaking time is 5 hours, obtaining diameter is the 202mm left and right, is highly the honeycomb ceramic carrier work in-process of 100mm;
(9) edging: the honeycomb ceramic carrier work in-process that obtain in step (8) are placed on the cylindrical grinding machine, be ground into roundness rindy less than not having of 1mm, diameter is that 186mm highly is the honeycomb ceramic carrier work in-process of 100mm, guarantees the roundness of carrier;
(10) make skin: the honeycomb ceramic carrier rindy that do not have that obtains in step (9) is placed on skin-making machine, it is the crust of 2mm that side after grinding applies last layer thickness with mud, then put into baking oven, baking is 2 hours at the temperature of 200 ℃, after the crust drying, obtaining diameter is that 190mm highly is the large, honeycomb ceramic monolith finished product of 100mm; Owing to having applied crust, the physical strength of carrier meets service requirements.
Embodiment 2
A kind of diesel vehicle preparation method of large, honeycomb ceramic monolith comprises the following steps:
(1) powder raw material preparation: the high-purity tabular talcum powder of high-purity lamellar kaolin powder, 35～45wt%, the 10～30wt% aluminum oxide powder that take 35～45wt%, take simultaneously the binding agent of above-mentioned raw materials gross weight 3～8wt% as shaping assistant, above-mentioned raw materials, binding agent are added in powder mixer and fully stir, until mix, obtain powder raw material;
(2) liquid blender preparation: take the powder raw material gross weight 20～35wt% water, 0.1～1.5wt% dispersion agent, the 0.5～2.5wt% lubricant that obtain in step (1), above-mentioned dispersion agent and lubricant slowly are added to the water and stir, until dispersion agent and lubricant are dissolved in water, obtain liquid blender;
(3) pug preparation: the powder raw material that step (1) is mixed is put into kneader and is rubbed, and sprays into simultaneously the liquid blender that step (2) obtains, and powder raw material becomes clod gradually, after the plasticity-of clod is stable, namely completes the pug preparation;
(4) moulded pottery not yet put in a kiln to bake preparation: the pug that step (3) is obtained is put into vacuum pugmill and is carried out the vacuum mud refining, vacuum tightness in the mud refining process≤-0.09MPa, obtain the moulded pottery not yet put in a kiln to bake supporting with forming machine barrel specification; If moulded pottery not yet put in a kiln to bake has demixing phenomenon, can adopt and repeatedly repeat the mud refining mode moulded pottery not yet put in a kiln to bake is met the demands;
(5) extrusion moulding: the moulded pottery not yet put in a kiln to bake that step (4) obtains is put into to vacuum-extruder, and by mould, extruding out diameter is not having of 385mm honeycomb ceramic carrier biscuit rindy;
(6) dryness finalization: the honeycomb ceramic carrier biscuit that step (5) is obtained is put into microwave oven and is carried out heat drying, until dry water ratio in base substrate≤2% that completes, from microwave oven, taking out;
(7) base substrate post-treatment: after the honeycomb ceramic carrier biscuit after step (6) dryness finalization is put to chi according to 1.5% the ratio of burning till contraction, the two ends redundance being cut away, is highly 154.3mm after processing;
(8) product burns till: the honeycomb ceramic carrier biscuit that processes according to dimensional requirement in step (7) is put into to kiln and burn till, firing period is 120 hours, firing temperature is 1415 ℃, soaking time is 8 hours, obtaining diameter is the 361.9mm left and right, is highly 152.4mm honeycomb ceramic carrier work in-process;
(9) edging: the honeycomb ceramic carrier work in-process that obtain in step (8) are placed on the cylindrical grinding machine, are ground into roundness rindy less than not having of 1mm, diameter is that 324mm highly is the 152.4mm honeycomb ceramic carrier, guarantees the roundness of carrier;
(10) make skin: the honeycomb ceramic carrier rindy that do not have that obtains in step (9) is placed on skin-making machine, it is the crust of 3mm that side after grinding applies last layer thickness with mud, then put into baking oven, baking is 2 hours at the temperature of 220 ℃, after the crust drying, obtaining diameter is that 330mm highly is the large, honeycomb ceramic monolith finished product of 152.4mm; Owing to having applied crust, the physical strength of carrier meets service requirements.
Above demonstration and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (1)
1. a diesel vehicle with the preparation method of large, honeycomb ceramic monolith, is characterized in that: comprise the following steps:
(1) powder raw material preparation: the high-purity tabular talcum powder of high-purity lamellar kaolin powder, 35～45wt%, the 10～30wt% aluminum oxide powder that take 35～45wt%, take simultaneously the binding agent of above-mentioned raw materials gross weight 3～8wt% as shaping assistant, above-mentioned raw materials, binding agent are added in powder mixer and fully stir, until mix, obtain powder raw material;
(2) liquid blender preparation: take the powder raw material gross weight 20～35wt% water, 0.1～1.5wt% dispersion agent, the 0.5～2.5wt% lubricant that obtain in step (1), above-mentioned dispersion agent and lubricant slowly are added to the water and stir, until dispersion agent and lubricant are dissolved in water, obtain liquid blender;
(3) pug preparation: the powder raw material that step (1) is mixed is put into kneader and is rubbed, and sprays into simultaneously the liquid blender that step (2) obtains, and powder raw material becomes clod gradually, after the plasticity-of clod is stable, namely completes the pug preparation;
(4) moulded pottery not yet put in a kiln to bake preparation: the pug that step (3) is obtained is put into vacuum pugmill and is carried out the vacuum mud refining, vacuum tightness in the mud refining process≤-0.09MPa, obtain the moulded pottery not yet put in a kiln to bake supporting with forming machine barrel specification;
(5) extrusion moulding: the moulded pottery not yet put in a kiln to bake that step (4) obtains is put into to vacuum-extruder, extrude out the honeycomb ceramic carrier biscuit of diameter greater than 150mm by mould;
(6) dryness finalization: the honeycomb ceramic carrier biscuit that step (5) is obtained is put into microwave oven and is carried out heat drying, until dry water ratio in base substrate≤2% that completes, from microwave oven, taking out;
(7) base substrate post-treatment: after the honeycomb ceramic carrier biscuit after step (6) dryness finalization is put to chi according to the ratio of burning till contraction, the two ends redundance is cut away;
(8) product burns till: the honeycomb ceramic carrier biscuit that processes according to dimensional requirement in step (7) is put into to kiln and burn till, firing period is 25～120 hours, firing temperature is 1360 ℃～1450 ℃, and soaking time is 4～8 hours, obtains the honeycomb ceramic carrier work in-process;
(9) edging: the honeycomb ceramic carrier work in-process that obtain in step (8) are placed on the cylindrical grinding machine, are ground into than the little 2～10mm of step (8) work in-process diameter, roundness less than not having of 1mm honeycomb ceramic carrier rindy;
(10) make skin: the honeycomb ceramic carrier rindy that do not have that obtains in step (9) is placed on skin-making machine, and it is the crust of 1～5mm that the side after grinding applies last layer thickness with mud, obtains large, honeycomb ceramic monolith finished product.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104387108A (en) * | 2014-11-20 | 2015-03-04 | 北京奥福(临邑)精细陶瓷有限公司 | Supersize cordierite honeycomb ceramic carrier and production technique thereof |
| CN104671741A (en) * | 2015-01-14 | 2015-06-03 | 江苏蓝烽新材料科技有限公司 | Preparation method of large-size honeycomb ceramic carrier for diesel engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815932A (en) * | 2012-09-17 | 2012-12-12 | 李少荣 | Method for adjusting firing shrinkage of cordierite honeycomb ceramics by using amorphous silicon micropowder |
| CN102847560A (en) * | 2012-09-17 | 2013-01-02 | 李少荣 | Production method of oversize specification honeycomb ceramic carrier |
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- 2013-07-17 CN CN2013102989998A patent/CN103396104A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815932A (en) * | 2012-09-17 | 2012-12-12 | 李少荣 | Method for adjusting firing shrinkage of cordierite honeycomb ceramics by using amorphous silicon micropowder |
| CN102847560A (en) * | 2012-09-17 | 2013-01-02 | 李少荣 | Production method of oversize specification honeycomb ceramic carrier |
Non-Patent Citations (1)
| Title |
|---|
| 白佳海等: "超低热膨胀堇青石质蜂窝陶瓷", 《中国陶瓷工业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104387108A (en) * | 2014-11-20 | 2015-03-04 | 北京奥福(临邑)精细陶瓷有限公司 | Supersize cordierite honeycomb ceramic carrier and production technique thereof |
| CN104671741A (en) * | 2015-01-14 | 2015-06-03 | 江苏蓝烽新材料科技有限公司 | Preparation method of large-size honeycomb ceramic carrier for diesel engine |
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Application publication date: 20131120 |