EP2452793B1 - Procédé de fabrication d'une structure en nid d'abeille obstruée - Google Patents

Procédé de fabrication d'une structure en nid d'abeille obstruée Download PDF

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Publication number
EP2452793B1
EP2452793B1 EP10251925.3A EP10251925A EP2452793B1 EP 2452793 B1 EP2452793 B1 EP 2452793B1 EP 10251925 A EP10251925 A EP 10251925A EP 2452793 B1 EP2452793 B1 EP 2452793B1
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EP
European Patent Office
Prior art keywords
plugging material
honeycomb structure
cell
cells
gravity center
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EP10251925.3A
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German (de)
English (en)
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EP2452793A1 (fr
Inventor
Satoru Tanaka
Shuichi Ichikawa
Suguru Kodama
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NGK Insulators Ltd
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NGK Insulators Ltd
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Priority to PL10251925T priority Critical patent/PL2452793T3/pl
Priority to EP10251925.3A priority patent/EP2452793B1/fr
Publication of EP2452793A1 publication Critical patent/EP2452793A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/003—Apparatus or processes for treating or working the shaped or preshaped articles the shaping of preshaped articles, e.g. by bending
    • B28B11/006—Making hollow articles or partly closed articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/003—Apparatus or processes for treating or working the shaped or preshaped articles the shaping of preshaped articles, e.g. by bending
    • B28B11/006—Making hollow articles or partly closed articles
    • B28B11/007—Using a mask for plugging

Definitions

  • the present invention relates to a method for manufacturing a plugged honeycomb structure. More specifically, the present invention relates to a method for manufacturing a plugged honeycomb structure capable of being used for a filter such as diesel particulate filter and having predetermined cells plugged in an end face.
  • a ceramic filter As a dust-collecting filter represented by a diesel particulate filter (DPF), a ceramic filter is used.
  • a ceramic filter there is known a plugged honeycomb structure having a large number of cells partitioned and formed by partition walls, functioning as fluid passages, and each plugged in only one end portion by plugging. Further, the plugged honeycomb structure may have a checkerwise pattern in the end face due to discontinuous disposition of plugging members.
  • the disposition of the plugging members which is the key to the filter function of the plugged honeycomb structure, is performed in a step of filling the plugging material into end portions of predetermined cells.
  • the filling of the plugging material is generally performed by immersion of an end face of the honeycomb structure in the plugging material (see Patent Document 1). At this time, a mask is applied to the opening of each of the cell end portions where the plugging material is not filled, and the plugging material is filled into the end portions of the predetermined cells.
  • the filling of the plugging member is completed by separating the plugging material inside the cells from the plugging material outside the cells.
  • Patent Documents 2 and 3 each discloses a method for manufacturing a plugged honeycomb structure, where, after immersing an end face of the honeycomb structure in a plugging material contained in a storage container, the brim of the storage container is slid along the end face to compulsorily separate the plugging material filled into the cells and the plugging material outside the cells.
  • Patent Document 4 discloses a method for manufacturing a plugged honeycomb structure, where, after immersing an end face of the honeycomb structure in a plugging material, air is supplied between the end face of the honeycomb structure and the plugging material present outside the cells to form an air layer.
  • the air layer compulsorily separates the continuity of the plugging material inside the cells and the plugging material outside the cells.
  • Patent Document 5 discloses a method for manufacturing a plugged honeycomb structure, where one end face of the honeycomb structure is immersed in a plugging material in a state that the other side cell end portions are open. This reduces the pressure repelling the flow of the plugging material into the cell end portions to make the flow of the plugging material into the cell end portions easy.
  • JP 2000 190312 describes a method of sealing cells of a ceramic molding according to the preamble of claim 1 by bringing a mask with openings in a sealing pattern into contact with an end face of the molding, then filling sealing paste into the cells of the molding through said openings, reducing a paste sectional area in the end face of the cells, and then separating the mask from the end face.
  • An agitating piece is vertically moved while pressurizing it from a sealing paste discharging tank, the tank having a mask provided at its side face and formed with openings in a sealing pattern. Sealing paste is supplied and discharged from the openings of the mask, thereby allowing the paste to intrude into an end of the cells of the ceramic molding.
  • the sectional area of the paste at an end face of the cells is then reduced by operating or displacing the mask along the end face of the molding. Then the mask can be separated from the end face of the molding in the paste sectional area reduced state.
  • Patent Document 5 has a drawback of productivity since the step of removing the mask provided on the cell end portion on the side opposite to the end portion immersed in the plugging material. In addition, since the manufacturing method of Patent Document 5 is on the assumption that pressure leaks out from the partition walls, the effect is not exhibited in the aforementioned honeycomb structure having reduced porosity.
  • the present invention aims to provide a method for manufacturing a plugged honeycomb structure, where a plugging material is filled into cell end portions of a honeycomb structure so that the cell end portions can be plugged lest the inside of the cell should communicate with the outside.
  • the present inventors earnestly studied the step where the plugging material is filled into cell end portions of the honeycomb structure, which led to the completion of the present invention. That is, according to the present invention, the following method for manufacturing a plugged honeycomb structure is provided.
  • a method for manufacturing a plugged honeycomb structure having porous partition walls separating and forming a plurality of cells extending through from one end face to the other end face of the honeycomb structure comprising: a masking step of providing a mask having injection holes formed so that 10 to 60% of an area of an opening portion of each of cells to be plugged on the one end face and/or the other end face is open with an injection hole gravity center as the gravity center of the injection hole being shifted from a cell opening gravity center as the gravity center of the opening portion of each of the cells, and after the masking step, a plugging material-filling step of supplying a plugging material having flowability into the cells to be plugged from the injection hole with causing repulsion pressure as pressure from the inner portions of the cells toward the opening portions.
  • a method for manufacturing a plugged honeycomb structure of the present invention can fill the plugging material into cell end portions of a honeycomb structure so that the end portions can be plugged without connecting the inside of the cells with the outside.
  • a method for manufacturing a plugged honeycomb structure of the present invention (hereinbelow, referred to as a "manufacturing method of the present invention") is characterized by a method for filling a plugging material into cell end portions of a honeycomb structure.
  • a honeycomb structure, names of each portion of the honeycomb structure, and the like will be described prior to the description of a manufacturing method of the present invention.
  • the manufacture of a ceramic honeycomb structure used for a DPF or the like goes through the steps of forming kneaded clay of a ceramic powder into a honeycomb shape to obtain a formed article and then firing the formed article to obtain a fired article. Both the aforementioned formed article and the fired article fall into honeycomb structures of the present specification.
  • the material is not particularly limited. From the viewpoints of strength, thermal resistance, corrosion resistance, and the like, the material is preferably one of silicon carbide, silicon-silicon carbide based composite material, silicon nitride, alumina, mullite, cordierite, aluminum titanate, silicon carbide-cordierite based composite material, lithium aluminum silicate, and aluminum titanate. Of these, silicon carbide or silicon-silicon carbide based composite material is more preferable.
  • the portions where the cells are open in the end face 4 of the honeycomb structure 1, that is, the ends of the cells 3 are called opening portions 5.
  • the direction where the cells 3 are extending over in the honeycomb structure 1 is called an extension direction 10.
  • the extension direction 10 is sometimes used for convenience sake when the orientation of the honeycomb structure 1 is described.
  • a plugged honeycomb structure 61 where pluggings 64 are disposed as shown in the perspective view of Fig. 3 can be obtained.
  • the honeycomb structure is shown so that the pluggings 64 show a checkerwise pattern when the end face 4 of the honeycomb structure 1 is viewed from the front.
  • a manufacturing method of the present invention is not limited to the method where the pluggings 64 are disposed in such a checkerwise pattern and can be applied to the disposition of the pluggings 64 of any distribution pattern as long as the pluggings 64 are disposed in cell end portions 7.
  • a manufacturing method of the present invention is a method where a mask 11 having injection holes 12 is provided on the open portions 5 of cells 3 to supply the plugging material 31 having flowability into the cells 3 from the injection holes 12, thereby filling the plugging material 31 into the cell end portions 7.
  • the manufacturing method of the present invention has a masking step and a plugging material-filling step described below.
  • Figs. 6 and 7 each shows an opening portion 5 of a cell 3 provided with the mask 11 having the injection hole 12 in the masking step. Incidentally, these figures show views of the end face 4 of the honeycomb structure 1 viewed from the extension direction 10.
  • the injection hole gravity center 13 is shifted with respect to the cell opening gravity center 9.
  • Fig. 6 shows a form where the cell opening gravity center 9 is present outside the injection hole 12
  • Fig. 7 shows a form where the cell opening gravity center 9 is included in the injection hole 12.
  • the area of the injection hole 12 corresponds to 10 to 60% of the area of the opening portion 5 of one cell 3. That is, in the opening portion 5, the plugging material 31 is supplied to the inside of the cell 3 from the portion of 10 to 60% of the area of the opening portion 5, and the remaining 40 to 90% portion of the area of the opening portion 5 is shut.
  • the honeycomb structure 1 has an inclination structure where a part of the end face 4 is deviated from the plane perpendicular to the extension direction 10 and a case where the mask 11 is not flat but curved.
  • the injection hole gravity center 13 and the cell opening gravity center 9 and the positional relation of the injection hole gravity center 13 and the cell opening gravity center 9 are determined as follows .
  • the injection hole gravity center 13 is determined as the gravity center of the plane figure obtained by projecting the injection hole 12 in the extension direction 10 to the projection plane, which is a plane perpendicular to the extension direction 10.
  • the cell opening gravity center 9 is determined as the gravity center of the plane figure obtained by projecting the opening portion 5 in the extension direction 10 to the same projection plane as in the determination of the injection hole gravity center 13.
  • Figs. 8 and 9 show an embodiment where, after the opening portion 5 is covered with the mask 11 with no hole, the injection hole 12 is formed.
  • Fig. 8 shows a vertical cross-section along the extension direction 10 of the honeycomb structure 1, where both the entire end faces 4 of the honeycomb structure 1 are covered with the masks 11 with no hole to shut the opening portions 5 of the cells.
  • Fig. 9 shows the state where the injection holes 12 are formed in the masks 11 covering the predetermined opening portions 5 after the masks 11 with no hole are provided on both the end faces 4 as shown in Fig. 8 .
  • the masks 11 where the holes functioning as the injection holes 12 are formed in advance are prepared and provided on the opening portions 5 so as to have the characteristics of the present invention.
  • the plugging material 31 when a honeycomb structure 1 containing ceramic as a main component is plugged, as the plugging material 31, it is preferable to use ceramic slurry of the same raw material as that of the honeycomb structure. In this case, when the plugging material 31 is filled into cell end portions 7 and fired, the thermal expansion coefficient is the same between the honeycomb structure 1 and the plugging material 31, and therefore a plugged honeycomb structure 61 having high durability can be obtained.
  • the repulsion pressure applied on the plugging material 31 supplied to the inside of the cell 3 may be generated by sending gas such as air or liquid from the open portion 5 opposite to the side where the plugging material 31 is supplied.
  • the method for supplying the plugging material 31 to the inside of the cell 3 from the injection hole 12 may be any of the method where the plugging material 31 is continuously supplied to the inside of the cell 3 and the method where the plugging material 31 is intermittently supplied to the inside of the cell 3.
  • Patent Document 4 there may be employed a method where the plugging material 31 contained in a plate-shaped storage container is pressed against the end face 4 of the honeycomb structure 1 to inject the plugging material 31 into the inside of the cell 3 under pressure.
  • the plugging material 31 may be supplied to the inside of the cell 3 by the use of a plugging apparatus having a pressurizing member helping the plugging material 31 to be supplied to the inside of the cell 3.
  • the plugging material 31 is not ejected to the outside of the cell 3 even under the repulsion pressure because of the support of the inside face 14 of the mask 11.
  • the plugging material 31 since the injection hole gravity center 13 is shifted from the cell opening gravity center 9, once the plugging material 31 has been filled into the cell end portion 7, the plugging material 31 receives the action of the mask 11 suppressing the ejection and deformation of the plugging material 31 and easily be held as it is without deformation until it is solidified.
  • this embodiment meansthat the cell opening gravity center 9 is not included in the figure projected from the injection hole 12 to the projection plane when the cell opening gravity center 9 and the injection hole gravity center 13 are determined by the aforementioned irregular method, that is, when the injection hole gravity center 13 and the cell opening gravity center 9 are determined on the projection plane.
  • the injection hole 12 does not include the cell opening gravity center 9 since the plugging material 31 in the vicinity of the cell opening gravity center 9, where the solidification of the plugging material 31 is slower, is covered by the inside face 14 of the mask 11, ejection of the plugging material 31 to the outside of the cell 3 is further inhibited.
  • it is securely prevented that the plugging material 31 is depressed in the vicinity of the cell opening gravity center 9 and moves toward the inside before the plugging material 31 is completely solidified, and no void is generated in the plugging material 31 filled into the cell end portion 7.
  • Fig. 10 is a vertical cross-sectional view along the extension direction 10 of the honeycomb structure 1 provided with the mask 11 and the plate-shaped storage container 41 containing the plugging material 31.
  • the figure shows how the plugging material 31 is continuously injected into the cells 3 under pressure with the plugging material 31 contained in the plate-shaped storage containers 41 being pressed against the end faces 4 of the honeycomb structure 1.
  • the storage container 41 shown in Fig. 10 is constituted from two parts so that a part of the side wall 43 is separated from the other part. Specifically, in a portion where the side wall 43 is partially separated, a complementary side wall 48 is provided on the outside of the dividable side wall 50 on the side where the plugging material 31 is contained. In addition, in the side wall 43 having a complementary side wall 48 attached thereto, the position of the tip portion 49 of the dividable side wall 50 is in the middle portion of the side wall 43 having a complementary side wall 48 attached thereto.
  • the position of the tip portion 49 of the dividable side wall 50 is preferably on the inside bottom portion 42 side with respect to the fluid level of the plugging material 31 when the end faces 4 of the honeycomb structure 1 are pressed against the plugging material 31 contained in the storage container 41. This enables to separate the dividable side wall 50 from the complementary side wall 48 with keeping the end faces 4 of the honeycomb structure 1 in the state of being pressed against the plugging material 31.
  • Fig. 11 shows separation of the dividable side wall 50 from the complementary side wall 48 after the injection the plugging material 31 into the cell 3 by a method shown in Fig. 10 . Since the tip portion 49 of the dividable side wall 50 locates in the aforementioned position, the dividable side wall 50 separated from the tip portion 48 can be moved perpendicularly to the extension direction 10 so as to traverse the end face 4 without getting stuck with the outer peripheral wall of the honeycomb structure 1.
  • the tip portion 49 of the dividable side wall 50 it is preferable to move the tip portion 49 of the dividable side wall 50 so as to glide over the end face 4 of the honeycomb structure 1 (see Fig. 11 ).
  • the plugging material 31 outside the cell 3 can compulsorily be separated from the plugging material 31 inside the cell 3, and superfluous plugging material 31 remaining on the end face 4 can be scraped off.
  • one of the storage container 41 where the complementary side wall 48 is separated and the honeycomb structure 1 may be moved, or both of them may be moved.
  • the plugging material 31a outside the cell 3 is moved along the direction from the injection hole gravity center 13 toward the cell opening gravity center 9.
  • the brim of the injection hole 12 easily functions as a blade, and the plugging material 31a present outside the cells 3 across the mask 11 can smoothly be separated from the plugging material 31a present inside the cells 3.
  • the plugging material 31 is ceramic slurry, it is possible to fire the honeycomb structure 1 having the plugging material 31 filled into cell end portions 7 after the plugging material-filling step.
  • the plugging material 31 has a viscosity of 100 to 700 dPa ⁇ s, more preferably 200 to 600 dPa ⁇ s from the viewpoints of inhibiting the incomplete plugging such as formation of a void in the plugging material 31 filled into the cell end portion 7 and reducing the variance in the plugging depth.
  • the viscosity of the plugging material 31 is 100 dPa ⁇ s or more, it securely inhibits the plugging material 31 from being filled deeply beyond necessity and from being ejected to the outside of the cell 3.
  • the viscosity of the plugging material 31 is 700 dPa ⁇ s or less, the plugging material 31 can securely be filled up to the desired depth from the end face 4.
  • the viscosity of the plugging material 31 described here is measured according to JIS K 7117-1 by the use of a single cylinder type rotary viscometer.
  • the positions of the cells 3 were calculated by image processing according to a method generally employed in a method for manufacturing a plugged honeycomb structure. Further, the coordinate values corresponding to the positions of the opening portions 5 of the cells 3 to be plugged and the coordinate values of the inside portions and the profiles of the injection holes 12 were calculated. On the basis of these coordinate values, only the positions for forming the injection holes 12 were irradiated with a laser to form the injection holes 12.
  • the injection holes 12 were formed only in the portions covering the opening portions 5 of the cells 3 having a large cell diameter of the adhesive film, while, in the end face 63 on the other side of the honeycomb structure 1, the injection holes 12 were formed only in the portions covering the opening portions 5 of the cells 3 having a small cell diameter of the adhesive film.
  • the injection holes 12 were formed to have an elliptic or a quadrangular shape. Regarding an elliptic injection hole 12, please see Figs. 6 and 7 .
  • the plugging material 31 ceramic slurry having the same components as those of the honeycomb structure 1 was employed, and the viscosity was adjusted to 50 to 800 dPa ⁇ s by adjusting the kind and amount of the binder to be added to the slurry (Table 1). Incidentally, the viscosity was measured according to JIS K 7117-1 by the use of a single cylinder type rotary viscometer.
  • a plate-shaped storage container 41 where a part of the side wall 43 is separated from the other part as shown in Figs. 10 and 11 .
  • the honeycomb structure 1 was held so that the extension direction 10 was horizontal.
  • the plugging material 31 was pressed against the end face 4 of the honeycomb structure 1 under a pressure of 0.2 MPa so that the distance between the inside bottom portion 42 of the storage container 41, and the end faces 4 of the honeycomb structure 1 were immersed in the plugging material 31.
  • the time (time for injection under pressure) for immersion of the end faces 4 of the honeycomb structure 1 in the plugging material 31 was one second.
  • the total amount of slurry filled into all the large cells (having a diameter of 1.99 mm) in the end face 62 on one side was 11g.
  • Example 10 and Comparative Example 3 by horizontally moving the storage containers 41 to separate the storage containers 41 from the honeycomb structure 1, the plugging material 31a outside the cells 3 and the plugging material 31b inside the cells 3 were separated from each other ("horizontal" in Table 1, not illustrated).
  • the plugging material 31 filled into the cell end portions 7 of the cells 3 having a large diameter was evaluated for three items of presence/absence of imperfect plugging, average plugging depth, and plugging depth variance, and the results are shown in Table 2.
  • the presence/absence of imperfect plugging was judged by checking the outflow of the plugging material 31 right after being filled into the cell end portion 7 from the cell end portion 7 to the end face of the honeycomb structure 1 or the presence/absence of a hole connecting the inside of the cell 3 with the outside of the cell 3 in the plugging material 31 filled into the cell end portion 7 due to the filling of an insufficient amount of the plugging material 31.
  • the average plugging depth was calculated by arbitrarily selecting seven large-sized cells from the end face 4 of one honeycomb structure 1 to obtain the average depth of the plugging material 31 filled into the seven large-sized cells.
  • the plugging depth was calculated by inserting a metal stick into the cells from the cell end portions 7 opposite to the side where the plugging material 31 was filled toward the cell end portions 7 where the plugging material 31 was filled and deducting the length of the inserted part of the metal stick from the entire length in the extension direction 10 of the cells 3.
  • the plugging depth variance was obtained by calculating the standard deviation ⁇ with respect to the aforementioned average plugging depth.
  • Example 1 to 17 had no imperfect plugging.
  • all of Comparative Examples 1 to 6 had imperfect plugging. Therefore, in Example 1 to 17, which belong to the technical scope of a manufacturing method of the present invention, the plugging material 31 can be filled into the cell end portion 7 of a honeycomb structure 1 so that the cell end portion could be plugged without allowing the inside of the cell 3 to communicate with the outside.
  • Example 2 and Comparative Example 2 had larger plugging depth and smaller plugging depth variance than those of the Example 10 and Comparative Example 3, which were for comparison with Example 2 and Comparative Example 2 (Tables 1 and 2). Therefore, the embodiments where the direction for separating the plugging the plugging material 31a outside the cells 3 from the plugging material 31b inside the cells 3 is perpendicular to the extension direction 10 had more appropriate depth of plugging material 31 filled in the cells 3 than that of embodiments where the separation direction is parallel to the extension direction 10 and hardly had imperfect plugging and plugging depth variance.
  • the injection hole 12 includes the cell opening gravity center 9 and the case that the injection hole 12 does not include the cell opening gravity center 9 were compared.
  • Example 2 had larger plugging depth and small plugging depth variance than those of Example 11 (Tables 1 and 2). Therefore, the embodiment where the injection hole 12 did not include the cell opening gravity center 9 had more appropriate depth of plugging material 31 filled in the cells 3 than that of embodiments where the injection hole 12 included the cell opening gravity center 9 and hardly had imperfect plugging and plugging depth variance.
  • Examples 14 to 17 and Comparative Examples 5 and 6 differed in only the viscosity of the plugging material 31.
  • Comparative Example 5 where the viscosity was lower than 100 dPa ⁇ s, the plugging material 31 was ejected to the outside of a cell 3 after plugging to cause imperfect plugging.
  • Example 6 where the viscosity was higher than 700 dPa ⁇ s, imperfect plugging was caused due to insufficient filling of the plugging material 31. Therefore, when the viscosity of the plugging material 31 is 100 to 700 dPa ⁇ s, the end portions of the cells 3 could be plugged without the inside of the cells communicating with the outside, and, when the viscosity of the plugging material is 200 to 600 dPa ⁇ s, a plugged honeycomb structure having high quality could be manufactured.
  • the present invention can be used as a method for manufacturing a plugged honeycomb structure which can be used as a filter such as a diesel particulate filter and where predetermined cells are plugged in the end faces.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Filtering Materials (AREA)

Claims (8)

  1. Procédé de fabrication d'une structure en nid d'abeilles (61) obturée comportant des parois de séparation (2) poreuses séparant et formant une pluralité de cellules (3) s'étendant d'une face d'extrémité (62) à l'autre face d'extrémité (63) de la structure en nid d'abeilles (61), le procédé comprenant :
    une étape de masquage pour réaliser un masque (11) comportant des trous d'injection (12) formés de sorte que 10 à 60 % d'une aire d'une partie d'ouverture (5) de chacune des cellules (3) à obturer sur ladite face d'extrémité (4) et/ou l'autre face d'extrémité (4) soit ouverte avec un centre de gravité de trou d'injection (13) en tant que centre de gravité du trou d'injection, et
    après l'étape de masquage, une étape d'introduction de matériau d'obturation pour fournir un matériau d'obturation (31) ayant une aptitude à l'écoulement dans les cellules (3) à obturer à partir du trou d'injection (12) en générant une pression de répulsion en tant que pression des parties intérieures des cellules (3) vers les parties d'ouverture (5), caractérisé en ce que, à l'étape de masquage, le centre de gravité de trou d'injection (13) est décalé par rapport à un centre de gravité d'ouverture de cellule (9) en tant que centre de gravité de la partie d'ouverture de chacune des cellules.
  2. Procédé de fabrication d'une structure en nid d'abeilles (61) obturée selon la revendication 1, dans lequel le masque (11) comportant les trous d'injection (12) formés au cas où chacun des trous d'injection (12) contiendrait le centre de gravité d'ouverture de cellule (9) à l'intérieur de celui-ci est réalisé à l'étape de masquage.
  3. Procédé de fabrication d'une structure en nid d'abeilles (61) obturée selon la revendication 1 ou 2, dans lequel le masque (11) comportant les trous d'injection (12) formés de sorte que 20 à 50 % de l'aire de la partie d'ouverture (5) de chacune des cellules (3) soit ouverte est réalisé à l'étape de masquage.
  4. Procédé de fabrication d'une structure en nid d'abeilles (61) obturée selon l'une quelconque des revendications 1 à 3, dans lequel le masque (11) comportant les trous d'injection (12) formés de sorte que le rapport entre la longueur dans la direction axiale horizontale (21) et la longueur dans la direction verticale (22) de chacun des trous d'injection (12) soit de 2,0 à 4,0 est réalisé à l'étape de masquage.
  5. Procédé de fabrication d'une structure en nid d'abeilles (61) obturée selon l'une quelconque des revendications 1 à 4, dans lequel l'étape d'introduction de matériau d'obturation est effectuée en maintenant une structure en nid d'abeilles (1) de sorte que le centre de gravité de trou d'injection (13) soit situé au-dessus du centre de gravité d'ouverture de cellule (9) dans une direction perpendiculaire à la direction d'extension de cellule (10) de sorte que le matériau d'obturation (31) délivré à l'intérieur de la cellule (3) reçoive l'action de la gravité en plus de la pression de répulsion.
  6. Procédé de fabrication d'une structure en nid d'abeilles (61) obturée selon l'une quelconque des revendications 1 à 5, dans lequel l'étape d'introduction de matériau d'obturation est effectuée en maintenant une structure en nid d'abeilles (1) de sorte que la direction d'extension de cellule (10) d'une face d'extrémité (4) à l'autre face d'extrémité (4) soit horizontale.
  7. Procédé de fabrication d'une structure en nid d'abeilles (61) obturée selon l'une quelconque des revendications 1 à 6, dans lequel, après la fourniture du matériau d'obturation (31) dans les cellules (3), le matériau d'obturation (31a) présent à l'extérieur des cellules (3) sur le masque (11) est déplacé perpendiculairement à la direction d'extension (10) pour séparer le matériau d'obturation (31a) présent à l'extérieur des cellules (3) du matériau d'obturation (31b) à l'intérieur des cellules (3) à l'étape d'introduction de matériau d'obturation.
  8. Procédé de fabrication d'une structure en nid d'abeilles (61) obturée selon l'une quelconque des revendications 1 à 7, dans lequel le matériau d'obturation (31) a une viscosité de 100 à 700 dPa.s.
EP10251925.3A 2010-11-12 2010-11-12 Procédé de fabrication d'une structure en nid d'abeille obstruée Active EP2452793B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL10251925T PL2452793T3 (pl) 2010-11-12 2010-11-12 Sposób wytwarzania zaślepionej struktury plastra miodu
EP10251925.3A EP2452793B1 (fr) 2010-11-12 2010-11-12 Procédé de fabrication d'une structure en nid d'abeille obstruée

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Application Number Priority Date Filing Date Title
EP10251925.3A EP2452793B1 (fr) 2010-11-12 2010-11-12 Procédé de fabrication d'une structure en nid d'abeille obstruée

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EP2452793A1 EP2452793A1 (fr) 2012-05-16
EP2452793B1 true EP2452793B1 (fr) 2014-04-23

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US9333684B2 (en) 2012-10-30 2016-05-10 Bell Helicopter Textron Inc. Method of repairing, splicing, joining, machining, and stabilizing honeycomb core using pourable structural foam and a structure incorporating the same
US9149999B2 (en) 2012-10-30 2015-10-06 Bell Helicopter Textron Inc. Method of repairing, splicing, joining, machining, and stabilizing honeycomb core using pourable structural foam and a structure incorporating the same
US9597826B2 (en) * 2012-10-30 2017-03-21 Bell Helicopter Textron Inc. Method of repairing, splicing, joining, machining, and stabilizing honeycomb core using pourable structural foam and a structure incorporating the same
US9015941B2 (en) 2012-10-30 2015-04-28 Bell Helicopter Textron Inc. Method of repairing honeycomb core using pourable structural foam

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JP4079533B2 (ja) * 1998-12-24 2008-04-23 イビデン株式会社 セラミック成形体の封口方法、セラミック成形体の封口装置、多孔質セラミック部材の製造方法、及び、セラミックフィルタの製造方法
JP3715174B2 (ja) 2000-04-18 2005-11-09 日本碍子株式会社 セラミック体の製造方法
JP4097971B2 (ja) * 2002-03-28 2008-06-11 日本碍子株式会社 セラミックハニカム構造体の製造方法及びセラミックハニカム構造体
JP4136490B2 (ja) 2002-06-27 2008-08-20 日本碍子株式会社 ハニカム構造体の製造方法
JP2004290766A (ja) 2003-03-26 2004-10-21 Ngk Insulators Ltd ハニカム構造体の製造方法
JP4632124B2 (ja) 2005-03-29 2011-02-16 日立金属株式会社 セラミックハニカムフィルタの製造方法
JP5181445B2 (ja) 2006-08-31 2013-04-10 株式会社デンソー セラミックハニカム構造体の栓詰め方法
US7722791B2 (en) 2007-07-18 2010-05-25 Ngk Insulators, Ltd. Method for manufacturing honeycomb structure and manufacturing apparatus thereof
JP5139856B2 (ja) * 2008-03-26 2013-02-06 日本碍子株式会社 目封止ハニカム構造体の製造方法

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EP2452793A1 (fr) 2012-05-16

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