CN1041292A - Hold the honeycomb ceramics that stacking sheet is made by several, be specially adapted to catalytic carrier - Google Patents
Hold the honeycomb ceramics that stacking sheet is made by several, be specially adapted to catalytic carrier Download PDFInfo
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- CN1041292A CN1041292A CN89106559A CN89106559A CN1041292A CN 1041292 A CN1041292 A CN 1041292A CN 89106559 A CN89106559 A CN 89106559A CN 89106559 A CN89106559 A CN 89106559A CN 1041292 A CN1041292 A CN 1041292A
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- honeycomb ceramics
- stacking sheet
- bending
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- 239000000919 ceramic Substances 0.000 title claims abstract description 65
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 7
- 238000005452 bending Methods 0.000 claims abstract description 51
- 230000001788 irregular Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 19
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 101100433727 Caenorhabditis elegans got-1.2 gene Proteins 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009342 intercropping Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Exhaust Gas After Treatment (AREA)
Abstract
A kind of honeycomb ceramics, suitable especially thing is as the catalytic carrier of automobile, it is made up of the plate (3,4) to the certain structure of small part, and this honeycomb ceramics is made of several stacking sheets around bending axis (2a, 2b, 2c) bending, and these stacking sheets externally zone are the equidirectional bendings that holds each other.The honeycomb ceramics of this structure just can be realized a symmetry arrangement in the housing of regular cross-section shape, and allows irregular shape of cross section is carried out manufacturing easy and with low cost.With regard to stability, it still keeps a lot of good characteristics of known various honeycomb body structures so far.
Description
The present invention relates to a kind of honeycomb ceramics, in particular as a kind of catalytic carrier.It is made up of the metal sheet (hereinafter to be referred as plate) of a fixed structure to small part, and has a plurality of passages of fluid by wherein that are suitable for.
Known a kind of honeycomb ceramics in EP-A-0245736, single writing board shape wherein is an involute shape in outer region, this with regard to stability, brings very big advantage under heating power live load and other stress situation.In addition, in EP-A-0245737, also disclose a kind of honeycomb ceramics, it is made rightabout coiling by a stacking sheet and forms, and the formation of this kind structure has stability preferably equally under the heating power live load.Though it is easy that this structure can be produced, but with regard to its structure, be not symmetrical fully, this all must take under single production stage and continuation processing situation, and is not under any circumstance can both carry out the flexible and cheap manufacturing to special cross-section and irregular cross section.
Though the structure of describing in EP-A-0245736 is symmetrical in its perimeter, the setting of central area is not, thereby causes corresponding manufacturing cost very high.
Task of the present invention provides a kind of honeycomb ceramics, it is symmetrical structure setting to a great extent under well-regulated shape of cross section situation, and manufacture easily, have the outstanding characteristics that keep stable under the heating power live load and under other stress situations simultaneously.In addition, the topology layout of this honeycomb ceramics can make special cross section, and the production cost of the honeycomb ceramics of especially irregular cross section is lower.
The solution that solves this task and propose is, this honeycomb ceramics has the passage that several fluids pass through, and be particularly suitable for catalytic carrier or be applied in other flow medias, this honeycomb ceramics is that the plate of a fixed structure constitutes by several to small part, and these plates are placed in the housing.For the present invention, do not consider which type of structure this single plate has, as long as but exist the suitable flow channel of convection cell.In general, this honeycomb ceramics is to adopt the alternately smooth plate and the corrugated plating of level, but the present invention also can adopt the plate of other structures in the same manner, and for example, corrugated plating particularly can be using inclined or that wing is curved is as known in the prior art.Also can use structure plate vertical with flow direction or that tilt or have slot and the plate of aperture.In any case, honeycomb ceramics of the present invention is made up of three stacking sheets at least, wherein three are respectively carried out bending around the cambered axle line of tearing open in the honeycomb ceramics central area, and its case of bending is equidirectional holding mutually, and are to hold bending around the central area to tear the cambered axle line open.The shortcoming of a kind of structure like this with regard to almost having avoided existing in the prior art, thereby have many advantages.For well-regulated cross section body, for example, circular or regular polyhedral body can also realize a kind of very symmetrical structure, and can also realize that under the situation of suitable selection stacking sheet quantity all plates can be same length, and all stacking sheets are made up of the plate of similar number.So just make production technology simple and cheap, also obtain less manufacturing tolerance in addition, especially may improve obviously aspect the distortion at housing.This new construction is not restricted to the application of the known and favourable measure that improves the honeycomb ceramics performance and take simultaneously, and even these is partly improved.All known joint techniques all can be used in structure of the present invention as hard solder, welding, sintering or similar techniques.And plate each other and/or to be connected with the structural rigidity of housing all be possible.If significant words can also realize that its longitudinal profile is about taper or conical planform, the wherein release of the central area by such honeycomb ceramics, thus realize a kind of so-called telescopic structure.In a word, the present invention includes the principal advantages of describing among EP-A-0245737 and the EP-A-0245738 embodiment with regard to variability and the characteristic under the heating power live load in producing.
Adopting four or more a plurality of bending under the stacking sheet situation of song, also can well arrange full more complicated cross-sectional structure, as also can describing in detail by accompanying drawing.Yet it is stable that the characteristic of the basic structure of honeycomb ceramics and it also still keeps, even a stacking sheet of arranging by the honeycomb ceramics central area does not collapse, and its end is and tears curved stacking sheet open jointly around song.Simultaneously, a kind of like this stacking sheet roughly forms the shape of " S ", is settling the bending axis of all the other stacking sheets in its border circular areas.
Under the simplest situation, honeycomb ceramics of the present invention can be made of plate rotation level and smooth and ripple, simultaneously, between these plates and/or with housing between on a part of contact wire, adopt joint technique to be connected the most handy hard solder at least.And plate end fixing on housing can be enough to select for use for multiple application technology.Yet this honeycomb ceramics also can or also can weld until several millimeters the degree of depth in an end face side or two end faces in narrow circumference range or in an independent zone altogether.
As describing by accompanying drawing, the present invention can arrange full well-regulated cross section with the plate of a fixed structure with simple especially mode.Many well-regulated cross sections, for example hexagon can be full with the stacking sheet row of the plate composition equal height of equal length with surprising mode, and this just makes that manufacturing is easy especially.About the length of plate, under the situation of certain structure plate, can not be interpreted as original plate length, and should be considered as the length after structure machines.Made by the stacking sheet of equal length under the well-regulated planform situation, these stacking sheets can always not torn open curved entirely in the center certainly.Being displaced sideways of single plate may be necessary in each stacking sheet, so that make stacking sheet have the tetragonal cross section of a kind of almost parallel before bending.
Also have irregular especially shape of cross section, as also will describing in detail, can realize with honeycomb body structure of the present invention by accompanying drawing.Because, not only the length of the height of each stacking sheet but also each the independent plate in each stacking sheet all can freely be selected, and, the plate of different length still can be done different lateral displacement arrangements in stacking sheet, so, structure of the present invention just provides a range of variations very widely, to be arranged full setting uniformly in the varying cross-section structure.For every kind of desirable shape of cross section almost, by technical staff's debugging and calculating in case of necessity, all can find one suitable for stacking sheet with and the arrangement of bending axis.
Another advantage of honeycomb ceramics of the present invention is, under the circular cross section situation, is evenly to carry on the whole circumference of housing at least, so housing itself just has the stability of the distortion of resisting.Thus, can make the very housing of thin flat plate, for example, its thickness is preferably got 1 millimeter or smaller slightly from having only 0.1 to 1.5 millimeter.
Also has one as favourable known measure, the realization that the arrangement that also is about to be positioned at single plate position thicker between all the other plates also can be without a doubt., promptly can use thicker plate herein, also can adopt the sheet member of same structure to make multistage scheduling by known mode for these plates arrangements.Simultaneously, the inside that promptly can be arranged in single stacking sheet in principle, these thicker plate positions also can be arranged in going up or downside of single stacking sheet.Also have, these stacking sheets always are made up of plate smooth or a fixed structure on its lateral surface, promptly according to when proving in the more favourable principle of honeycomb ceramics of making or forming.Be that people attempt the arrangement that allows these flat runners and the mutual intercropping of corrugated plating position replace always significantly in the honeycomb ceramics that forms, in order that can not recognize the boundary between this single stacking sheet in the perimeter of honeycomb ceramics.But, this can't owing to less thickness for example 0.03 to 0.06 millimeter damage the plate position, for example when two level and smooth flat position be when resting on the boundary line of two stacking sheets each other.Yet in ideal conditions, people can not discern in the plate position of honeycomb ceramics perimeter to belong to which stacking sheet, thus, only by this plate be placed in curved around the time bending axis that centered on could determine.
A kind of method of producing this honeycomb ceramics is, several each free several have the plate of a fixed structure to make the lamination plate to small part, each stacking sheet is respectively torn the cambered axle line open around one and is collapsed, simultaneously or and then move towards a central area with its bending rib, and the end of tearing curved stacking sheet open is the equidirectional bending that holds mutually, and this point for example can be by the rotation of central area and strained the honeycomb ceramics that surrounds stacking sheet together and realize.To bend so at last around lamination push in the housing of making in advance or and wire up with a housing.
In addition, also can use the stacking sheet of differing heights and/or different plate length, and the plate in stacking sheet can also side direction be done additional moving toward each other.
The advantage of described production method is, is the raising speed of production, can be simultaneously with the different three or more stacking sheets of stack plate device manufacturing, and dress is led in a central area in the past then.With the honeycomb ceramics that production only is made up of a stacking sheet, its production time has just shortened.
Embodiments of the invention and corresponding manufacture process, the cross-sectional structure of painting with letter in the accompanying drawing is made an explanation respectively.
Fig. 1 is the cross-sectional view of honeycomb ceramics of the present invention.
Fig. 2 is the key diagram of production method.
Fig. 3 is a kind of honeycomb ceramics that the present invention has the hexagonal shape of cross section.
Fig. 4 and Fig. 5 are the honeycomb ceramics with irregular cross-sectional structure.
Fig. 6 is the honeycomb ceramics of a kind of circle of being made by four stacking sheets.
Fig. 7 and Fig. 8 are the cross section with rule, for example leg-of-mutton honeycomb ceramics of external drum quadrangle and external drum.
Fig. 9 be have with Fig. 8 identical cross-section but use an additional stacking sheet that does not collapse and arrange full honeycomb ceramics.
The cross-sectional view of Fig. 1 has illustrated a honeycomb ceramics that is made of flat runner 3 and corrugated plating 4, and it is placed in the housing 1.In the perimeter of honeycomb ceramics, this single writing board shape approximately is an involute shape, simultaneously, exists axis of bending 2a, 2b, 2c in its interior zone, and three bent-axis are arranged in the present embodiment.Around these bent-axis 2a, 2b, 2c be the 1/3 plate number that will in honeycomb ceramics, contain respectively do the bending setting and externally the zone be that state with bending holds mutually in the same way.
The formation of honeycomb ceramics of the present invention illustrates by Fig. 2.Several stacking sheets 8a, 8b, 8c are arranged, only draw three herein, respectively around bending axis 2a, a 2b, 2c bending.Then, the perhaps best even while, make corresponding bending rib 9a, 9b, 9c 5 motions, as using shown in the arrow 6 toward a common central area.At their final position, that is in central area 5, these single stacking sheet 8a, 8b, 8c then bump together mutually.As represented, now just the termination of bending stacking sheet 8a, 8b, 8c can be held by equidirectional with arrow 7.This point can be passed through the center of rotation zone, for example by the device of a similar fork spare, rotates into the shape that holds to pull into a shape that holds jointly and/or to strain together by the fixed center zone.Also can imagine other embodiment, particularly these bending axis 2a, 2b, 2c can form by the instrument of fork-shaped, and these instruments realize that by rotating tearing open of stacking sheet is curved.
Fig. 3 shows the vantage that in some way stacking sheet is placed in a common hexagon.Three stacking sheets are installed in housing 31, and they are around bending axis 32a, 32b, 32c bending.Favourable mode is that this number that is filled with the stacking sheet of regular polygonal body should wait half of angle number or angle number.Thus, just can realize a kind of structure of the same intervals height stacking sheet of forming by the equal length plate.Can also simultaneously, be proved with regard to position work in principle the remodeling of bending axis, under the situation of the polygonal body of even number, the bending axis is placed on the line plane of the opposed arris of housing with respect to angle as favourable scheme.
Fig. 4 represents an irregular honeycomb ceramics cross-sectional structure, and it makes people expect the shape and structure of hodmadod.Herein, housing 41 can the row of being particularly conducive to be expired, at this moment, as long as one of three stacking sheets, that is have than other two height that stacking sheet is less around the stacking sheet of bending axis 42a, so-called other two is exactly the stacking sheet that centers on bending axis 42b, 42c bending.Simultaneously, axis 42a, the 42b of these three bendings, 42c are greatly in a plane.
Fig. 5 also illustrates shape of cross section and technical scheme by four full these planforms of stacking sheet row of an irregular housing 51.These bending axis 52a, b, c d are irregular being placed in the honeycomb ceramics central area, and simultaneously, this arrangement can make it improvement by the test of calculating or system.What must remind this moment is, these remaining in the accompanying drawings little spaces almost completely do not exist in the manufacture process of reality, and this is to cause because of distortion these spaces having been filled up because of stacking sheet and plate position.
Fig. 6 represents a kind of very symmetrical situation that is provided with of circular housing 61, and it arranges full with four stacking sheets around bending axis 62a, b, c, d bending.
Fig. 7 represents that a kind of its is shaped as the tetragonal tube shell 71 of external drum, and it also can be arranged full around bending axis 72a, b, c, d, crooked stacking sheet by four simultaneously.
Fig. 8 is a kind of housing 81 with external drum triangle, and it is arranged full with three stacking sheets around bending axis 82a, b, c bending.Herein, these tear cambered axle line 82a, b, c open for the center line of honeycomb ceramics, always are in opposite opposed that side of each arris with honeycomb ceramics.The respective cross-sectional shapes that this arrangement is suitable for the polygonal body of well-regulated odd number in general and forms by external drum thus.
The embodiment that Fig. 9 represents is in a certain mode honeycomb ceramics of the present invention to be focused on the stacking sheet that does not collapse 98.In this case, housing 91 has the shape and structure as Fig. 8, but full with four stacking sheet and the stacking sheet that does not close up bending 98 rows around bending axis 92a, b, c, d bending.People as can be seen, in the structure of this arrangement, this stacking sheet that does not collapse 98 always by two the central area bending and mend completely with the adjoining each other stacking sheet of its bending arris.Yet people can also be to this honeycomb ceramics with actual five or more a plurality of stacking sheet manufacturing, and always the stacking sheet of two bendings is replaced with its double wide stacking sheet that does not collapse.This point is said in principle, to the not change of advantage of structure, and only is a manufacturing technology problem.
The present invention is specially adapted to the catalytic carrier of high heating power load in the internal combustion engine, but is not limited to this application. Because this honeycomb ceramics also can at other field, for example obtain in the treating apparatus of flow fluid to use.
Claims (14)
1, a kind of have several and be used for the fluid flow passage, be particularly suitable for doing the honeycomb ceramics of catalytic carrier, it has the metal sheet (3 of a fixed structure by several to small part, 4) constitute, these plates are placed in a housing (1,31,41,51,61,71,81,91) in, feature of the present invention is, this honeycomb ceramics comprises three at least by metal sheet (3,4) stacking sheet (8a of Zu Chenging, 8b, 8c,), three stacking sheet (8a at least simultaneously, 8b, 8c ...) respectively around a corresponding bending axis (2a, b, c, 32a, b, c, 42a, b, c, 52a, b, c, 62a, b, c, d, 72a, b, c, d, 82a, b, c, 92a, b, c, d) carry out bending in the central area of honeycomb ceramics, and the state of its bending be hold mutually in the same way and around comprising bending axis (2a, b, c, 32a, b, c, 42a, b, c, 52a, b, c, d, 62a, b, c, d, 72a, b, c, d, 82a, b, c, 92a, b, c, d) central area is around song.
2, by the honeycomb ceramics of claim 1, it is characterized in that honeycomb ceramics comprise four or more a plurality of bendings, around the stacking sheet of song (8a, 8b, 8c ...).
3, by the honeycomb ceramics of claim 1, it is characterized in that additional do not collapse, the stacking sheet (93) by honeycomb ceramics center trend of the stacking sheet that collapses relatively, it also holds bending with the stacking sheet that collapses.
4, by claim 1 or 2 or 3 honeycomb ceramics, it is characterized in that each stacking sheet (8a 8b, 8c ...) be to constitute basically by alternately arranged flat runner (3) and corrugated plating (4).
5,, it is characterized in that plate (3,4) is that solder technology is connected to each other and/or with housing (1,31,41,51,61,71,81,91) at least a portion contact wire, preferably hard solder by claim 1 or 2 or 3 or 4 honeycomb ceramics.
6, by the honeycomb ceramics of one of aforementioned claim, the contact wire that it is characterized in that plate fully or partly will be welded to several millimeters the degree of depth in one or two end face side of honeycomb ceramics.
7,, it is characterized in that the polygonal structure that the cross section of housing (31) has primitive rule, preferably hexagon by the honeycomb ceramics of one of aforementioned claim.
8, by the honeycomb ceramics of one of aforementioned claim, it is characterized in that all plates, but have different distances to small part to their center with essentially identical length bending.
9, by claim 1 or 2 or 3 or 4 or 5 or 6 honeycomb ceramics, it is characterized in that housing (41) has a kind of irregular cross section, stacking sheet to small part has different height and/or has different length to small part.
10,, it is characterized in that housing (1,31,41,51,61,71,81,91) is a kind of sheet material formation 0.1 to 1.5 millimeters thick, that be preferably 1 millimeter of having only by the honeycomb ceramics of one of claim 1 to 6.
11, by the honeycomb ceramics of one of aforementioned claim, it is characterized in that several metal sheets (3,4) are slightly thicker than remaining or by several each other by the thickness of the plate of the same structure put.
12, produce the method for honeycomb ceramics, this honeycomb ceramics has several passages that are used for fluid flow and has the plate of a fixed structure to constitute by several to small part, the invention is characterized in,
A. several stacking sheets (8a, 8b, 8c ...) have the metal sheet (3,4) of a fixed structure to be stacked to by several to small part respectively.
B. each stacking sheet (8a, 8b, 8c ...) respectively around bending axis (2a, 2b, 2c ...) collapse, and simultaneously or and then with its tear open the crimp rib (9a, 9b, 9c ...) to central area (5) motion,
C. tear open curved stacking sheet (8a, 8b, 8c ...) the end will be equidirectional ground hold bending mutually, for example by the rotation of central area (5) and together tension encirclement stacking sheet (8a, 8b, 8c ...) honeycomb ceramics,
D. will hold crooked stacking sheet (8a, 8b, 8c ...) push in the housing that gives making earlier (1) or with such housing and wire up.
13, by the method for claim 12, it is characterized in that stacking sheet (8a, 8b, 8c ...) have a metal sheet (3,4) of a differing heights and/or different length.
14, press the method for claim 12 or 13, it is characterized in that stacking sheet (8a, 8b, 8c,) before bending, have a kind of parallelogram, trapezoidal or irregular cross section to small part, wherein, the stacked setting that the plate of respective length can be displaced sideways mutually.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3832243 | 1988-09-22 | ||
| DEP3832243.9 | 1988-09-22 | ||
| PCT/EP1989/000311 WO1990003220A1 (en) | 1988-09-22 | 1989-03-22 | Honeycomb structure, in particular catalyst support, composed of a plurality of interlaced bundles of sheet metal |
| XP/EP89/0311 | 1989-03-22 | ||
| EPPCT/EP89/00311 | 1989-03-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1041292A true CN1041292A (en) | 1990-04-18 |
| CN1021023C CN1021023C (en) | 1993-06-02 |
Family
ID=25872487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89106559 Expired - Lifetime CN1021023C (en) | 1988-09-22 | 1989-07-27 | Honeycomb body made of several wrapping laminates, especially suitable for catalytic supports |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1021023C (en) |
| ES (1) | ES2015219A6 (en) |
| RU (1) | RU2024299C1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078101C (en) * | 1995-06-14 | 2002-01-23 | 发射技术有限公司 | Method and device for producing honeycomb body, in particular catalyst-support body |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19704144A1 (en) * | 1997-02-04 | 1998-08-06 | Emitec Emissionstechnologie | Extruded honeycomb body, in particular catalyst carrier body, with reinforced wall structure |
| DE19751788C2 (en) * | 1997-11-21 | 2001-11-15 | Siemens Ag | Catalyst body |
| DE19815608A1 (en) * | 1998-04-07 | 1999-10-14 | Emitec Emissionstechnologie | Catalytically active structure |
| US6440895B1 (en) * | 1998-07-27 | 2002-08-27 | Battelle Memorial Institute | Catalyst, method of making, and reactions using the catalyst |
| DE19925390C1 (en) * | 1999-06-02 | 2000-08-03 | Emitec Emissionstechnologie | Honeycomb body used as catalyst carrier for purifying I.C. engine and diesel exhaust gas has two coated or wound sheet metal layers |
| DE10304814C5 (en) * | 2003-02-06 | 2009-07-02 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Method and tool for producing structured sheet metal layers; The catalyst support body |
| RU2243032C1 (en) * | 2003-10-13 | 2004-12-27 | Институт катализа им. Г.К.Борескова СО РАН | Catalyst carrier and a method for preparation thereof |
| RU2249481C1 (en) * | 2003-12-23 | 2005-04-10 | Институт физико-химических проблем керамических материалов Российской Академии Наук | Method of manufacturing monolithic cellular carrier for catalytic exhaust gas neutralizers and carrier manufactured by this method |
| RU2275962C1 (en) * | 2004-12-09 | 2006-05-10 | Институт физико-химических проблем керамических материалов Российской академии наук (ИПК РАН) | Method of preparing catalyst for treating internal combustion engine exhaust gases and catalyst prepared by this method |
| RU2322296C1 (en) * | 2006-12-04 | 2008-04-20 | Институт физико-химических проблем керамических материалов Российской академии наук (ИПК РАН) | Method of preparing catalyst for treating internal combustion engine exhaust gases and catalyst obtained by this method |
-
1989
- 1989-07-27 CN CN 89106559 patent/CN1021023C/en not_active Expired - Lifetime
- 1989-09-22 ES ES8903208A patent/ES2015219A6/en not_active Expired - Lifetime
-
1991
- 1991-03-21 RU SU914894975A patent/RU2024299C1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078101C (en) * | 1995-06-14 | 2002-01-23 | 发射技术有限公司 | Method and device for producing honeycomb body, in particular catalyst-support body |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2015219A6 (en) | 1990-08-01 |
| CN1021023C (en) | 1993-06-02 |
| RU2024299C1 (en) | 1994-12-15 |
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