EP1245360A2 - Procédé d'obturation pour stucture céramique en nid d'abeille - Google Patents

Procédé d'obturation pour stucture céramique en nid d'abeille Download PDF

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Publication number
EP1245360A2
EP1245360A2 EP02006786A EP02006786A EP1245360A2 EP 1245360 A2 EP1245360 A2 EP 1245360A2 EP 02006786 A EP02006786 A EP 02006786A EP 02006786 A EP02006786 A EP 02006786A EP 1245360 A2 EP1245360 A2 EP 1245360A2
Authority
EP
European Patent Office
Prior art keywords
plug member
honeycomb body
ceramic honeycomb
end portions
cell end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02006786A
Other languages
German (de)
English (en)
Other versions
EP1245360B1 (fr
EP1245360A3 (fr
Inventor
Mikio Ishihara
Mamoru Nishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Denso Corp filed Critical Denso Corp
Publication of EP1245360A2 publication Critical patent/EP1245360A2/fr
Publication of EP1245360A3 publication Critical patent/EP1245360A3/fr
Application granted granted Critical
Publication of EP1245360B1 publication Critical patent/EP1245360B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • This invention relates to a plugging method for a ceramic honeycomb body for collecting Diesel particulates, for example.
  • a filter structure used for collecting particulates in an exhaust gas of an automobile for example, includes a ceramic honeycomb body 5 having a construction in which partition walls 51 partition a large number of cells 55 as shown in later-appearing Figs. 3(a) and 3(b), and which has a closing portion 15 where cell end portions 50 of some of the cells 55 are alternately closed by plug members 10.
  • this ceramic honeycomb body 5 methyl cellulose as a binder, water and a stearic acid emulsion as a lubricant are mixed with silicon carbide powder to prepare a kneaded material, as described in Japanese Unexamined Patent Publication (Kokai) No. 9-25180. Extrusion molding of the kneaded material is carried out to obtain a ceramic honeycomb body having cell end portions 50 at both ends of each cell 55. Plug members 10 are put into some of the cell end portions opening at both end faces.
  • a masking material 90 such as wax is applied in a checkerwork pattern to every other cell end portions 50 of the ceramic honeycomb body 5 (see Fig. 3b). Both end portions of this ceramic honeycomb body 5 are immersed in the plug material slurry to let it soak into the cell end portions 50. The ceramic honeycomb body 5 is then dried and heated.
  • the plug member 10 enters into each cell end portion of the ceramic honeycomb body 5 that is not masked by the masking material 90.
  • the masking material 90 is thereafter removed.
  • the ceramic honeycomb body 5 having inlets 14 and outlets 16 alternately formed as shown in Figs. 3a and 3b.
  • the plugging method of the ceramic honeycomb body according to the prior art involves the following problem.
  • the plug member 10 closing each cell end portion 50 should fully close the cell end portion as shown in Fig. 6(a).
  • the plug member slurry when the plug member slurry is charged into the cell end portions 50 and is thereafter dried and heated to form the plug members 10, the plug member slurry undergoes shrinkage.
  • this invention provides a plugging method of a ceramic honeycomb body that does not create a clearance in plug members for closing cell end portions.
  • a plugging method of cell end portions for producing a ceramic honeycomb body having a large number of cells partitioned by partitions and cell end portions plugged by plug members, by the steps of covering cell end portions not requiring the plug members with a masking material on the end faces of the ceramic honeycomb body, immersing the end faces of the ceramic honeycomb body into a plug member slurry and plugging the cell end portions, wherein the plug member slurry contains ceramic particles, a foaming material and water or an oil solvent.
  • the plug member slurry contains the ceramic particles, the foaming material and water or the oil solvent.
  • the plug member slurry is allowed to soak into the cell end portions not covered with the masking material, and the cell end portions are closed.
  • the foaming material in the plug member slurry at the cell end portions is foamed to thereby expand the plug member slurry (Fig. 4) and to form the plug member at each cell end portion.
  • the plug member completely closes each cell end portion, and clearance is not created in the plug member.
  • a plugging method of cell end portions for producing a ceramic honeycomb body having a large number of cells partitioned by partitions and cell end portions plugged by plug members, by the steps of covering cell end portions not requiring the plug members with a masking material on end faces of the ceramic honeycomb body, immersing the end faces of the ceramic honeycomb body into a plug member slurry and plugging the cell end portions, wherein the immersion operation into the plug member slurry is carried out a plurality of times.
  • this method can reliably prevent the occurrence of clearance in the plug member because the immersion operation is carried out a plurality of times.
  • this invention can provide a plugging method of a ceramic honeycomb body that does not create a clearance in a plug member for closing each cell end portion.
  • the ceramic honeycomb body to be immersed in the plug member slurry may be one that has not been sintered.
  • the ceramic honeycomb body is not sintered, it is possible to produce the plug member described above by conducting sintering and foaming the foaming material.
  • the ceramic honeycomb body is sintered, it is possible to produce the plug member by foaming the foaming material in the plug member slurry at the cell end portions of the ceramic honeycomb body.
  • a heat-foamable foaming material that undergoes foaming upon heating can be used as the foaming material described above.
  • thermoplastic resin a material foaming at 80°C or above.
  • a material foaming at 80°C or above is foaming particles prepared by encapsulating a liquefied hydrocarbon type foaming agent in a thermoplastic resin.
  • the heat-foamable foaming material is prepared by encapsulating a liquid gas inside a polymer shell made of a thermoplastic resin.
  • a polymer shell made of a thermoplastic resin.
  • the gas pressure of the liquefied gas inside the polymer shell increases and at the same time, the polymer shell is softened. Consequently, its volume drastically increases and the foaming material results in hollow spherical particles.
  • the foaming material is preferably contained in an amount of 0.1 to 5wt% on the basis of 100wt% of the ceramic particles.
  • the plug member can be more reliably packed into the cell end portions for closing them, and can prevent the occurrence of the clearance.
  • the amount of the foaming material is less than 0.1wt%, the effect of the addition of the foaming material is small, in some cases.
  • the amount exceeds 5wt% expansion of the plug member slurry becomes so great that compactness of the plug member is sometimes lost.
  • the oil solvent is preferably an alcohol or a petroleum solvent.
  • the plugging operation can be made to a dried body before sintering, and the effect of reducing the cost can be obtained.
  • the plug member slurry preferably contains 0.1 to 5wt% of the foaming material, 0.1 to 1wt% of the binder and 30 to 40wt% of water on the basis of 100wt% of the ceramic particles.
  • the plug member slurry can be more reliably packed into the cell end portion, and the occurrence of the clearance at the plug member can be prevented.
  • the reason for limitation of the addition amount of the foaming material is the same as described above.
  • the binder content is less than 0.1wt%, it is difficult to fully pack the plug member slurry into the cell end portions.
  • it exceeds 1% on the other hand, the viscosity of the plug member slurry becomes so high that the plug member slurry cannot easily soak into the cell end portions.
  • the viscosity of the plug member slurry becomes so low that the plug member slurry cannot be easily retained inside the cell end portion.
  • the ceramic particles contained in the plug member slurry are preferably the same kind as the ceramic honeycomb body or those which have a shrinkage ratio during sintering and a coefficient of thermal expansion approximate to those of the ceramic honeycomb body. Such ceramic particles can prevent the occurrence of cracks.
  • Ceramic particles examples include cordierite, a cordierite formation material prepared by mixing talc, kaolin, alumina, etc, in a predetermined ratio, mullite, silicon carbide and silicon nitride.
  • the binder described above plays the role of bonding the ceramic particles to one another.
  • examples of such a binder are celluloses such as methyl cellulose and ethyl cellulose, acrylic type binders and polyvinyl alcohol.
  • the binder can be omitted depending on the combination of the kind of the ceramic particles and the adjuvant inside the plug member slurry.
  • the particle size of the foaming material is preferably from 5 to 30 ⁇ m (claim 5). When the particle size is less than 5 ⁇ m, the expansion ratio of foaming becomes small and the effect becomes small, too. When the particle size of the foaming material exceeds 30 ⁇ m, each pore becomes so large that clearance is likely to develop.
  • plugging of the cell end portions is preferably carried out by the steps of immersing the end face of the ceramic honeycomb body into the plug member slurry and then conducting drying and heating.
  • the foaming material in the plug member slurry is allowed to foam at each cell end portion to form the plug member at the cell end portion.
  • the honeycomb molded article After drying and heating of the honeycomb molded article are carried out as described above before sintering, the honeycomb molded article is sintered, so that the foaming material is allowed to foam and the plug member can be formed.
  • a plugging method of a ceramic honeycomb body according to this embodiment will be explained with reference to Figs. 1, 2, 3(a), 3(b) and 4.
  • the plugging method of this embodiment is carried out by the steps of covering each cell end portion 50, at which the plug member 10 is not required, with a masking material 90, immersing the end face of the ceramic honeycomb body 5 into a plug member slurry 1 and then conducting drying and heating.
  • the plug member slurry 1 contains ceramic particles, a foaming material, water or an alcohol and an oil solvent such as petroleum.
  • the plug member slurry in this embodiment is prepared by mixing 18wt% of fused silica (SiO 2 ) as the ceramic particles, 38wt% of talc (MgO ⁇ SiO 2 ) and 44wt% of aluminum hydroxide, adding 2wt% of the foaming material and 35wt% of water to 100wt% of these ceramic particles, and mixing them together.
  • the foaming material is heat-foamable particles that undergoes foaming upon heating. These particles are formed by coating foaming material of a liquid hydrocarbon with a thermoplastic resin, and the particle size is about 15 ⁇ m.
  • the ceramic particles described above have a diameter of 1 to 40 ⁇ m.
  • the ceramic honeycomb body 5 To produce the ceramic honeycomb body 5, on the other hand, a mixture of the ceramic particles and the binder is extrusion-molded into a honeycomb shape and is sintered.
  • the masking material is arranged at every other cell end portions 50 in a checkerwork pattern to close the cell end portions 50.
  • the masking material 90 uses a wax. In this way, there is prepared the ceramic honeycomb body 5 in which the cell end portions 50 of the adjacent cells 55 are alternately closed by the masking material 90.
  • the plug member slurry 1 is placed into a vessel 3 as shown in Fig. 1 and one of the ends of the ceramic honeycomb body 5 is immersed into the plug member slurry 1. Consequently, the plug member slurry 1 soaks into each cell end portion 50 not closed by the masking material 90.
  • the ceramic honeycomb body 5 is pulled out from the plug member slurry 1, and the plug member slurry is dried at about 100°C for 10 minutes.
  • the ceramic honeycomb body 5 is turned upside down and the other end portion is immersed into the plug member slurry 1, is pulled out and is dried, as shown in Fig. 2.
  • the ceramic honeycomb body 5 is placed into a heater and is gradually heated to about 1,400 to 1,450°C so as to sinter the ceramic particles 1 in the plug member slurry and to form the plug member 10.
  • the ceramic honeycomb body 5 having the closed portions 15 where the plug members 10 obtained from the plug member slurry 1 close the cell end portions 50 (Figs. 3(a) and 3(b)).
  • the wax of the masking material 90 is evaporated and removed, and the cell end portions 50 are opened.
  • the plug members 10 close every other cell end portions in the checker work as shown in Fig. 3(b).
  • the intrusion length of the plug member 10 is about 4 mm.
  • Each partition 51 of the ceramic honeycomb body 5 is porous. Therefore, as indicated by arrows in Fig. 3(a), an exhaust gas entering from an inlet 14 of the ceramic honeycomb body 5 flows through the cell 55, passes through the partition 51, enters an adjacent cell 5 having an outlet 16 and is discharged from the outlet 16. In the meantime, the partition 51 collects Diesel particulates.
  • the plug member slurry 1 contains the ceramic particles, the foaming material, water or the alcohol and the oil solvent such as petroleum.
  • the plug member slurry 1 impregnates the cell end portions 50 and is then dried. When the ceramic particles are heated for sintering, the ceramic particles are sintered with the partitions of the ceramic honeycomb body and close the cell end portions 50.
  • the foaming material mixed with the ceramic particles is foamed at this time by heating and the plug member slurry 1 is expanded. Sintering proceeds under this state, thereby giving the plug member. Therefore, the plug member 10 completely closes the cell end portions 50 without forming a clearance in the plug member.
  • Fig. 4 shows the state where the plug member slurry 1 is heated and expanded.
  • the foaming material in the plug member slurry 1 expands during heating, and a pushing force (indicated by arrows) operates outward. Therefore, the clearance does not develop in the plug member 10, and the ceramic particles and the plug member 10 come into close contact with the partitions 51. Therefore, the sintering strength is improved between the plug member 10 and the partition 51.
  • This embodiment conducts the immersion operation described above three times without the foaming material used in Embodiment 1 being added.
  • the immersion operation is carried out while a drying step at about 80°C is interposed between them.
  • the plug member slurry 1 can sufficiently soak into the cell end portions 50, and the plug member 10 can be formed without creating a clearance.
  • Other effects are the same as those of Embodiment 1.
  • the optimal amount of addition of the foaming material in Embodiment 1 described above is confirmed through experiment.
  • the plug member 10 is formed at each cell end portion 50 of each ceramic honeycomb body 5 when the amount of addition of the foaming agent is changed, and the strength of the plug member 10 is measured. Whether or not any defect, such as clearance, in this plug member 10 exists is also determined.
  • the plug member slurry 1 in this embodiment contains the ceramic particles, the foaming material and "dry solvent” (a product of Omoteya Sekiyu K. K.).
  • the plug member 10 is produced in the same way as the plugging method of the ceramic honeycomb body 5 of Embodiment 1.
  • the amount of addition of the foaming material on the basis of 100wt% of the ceramic particles is changed between 0 and 20wt% to form the plug member 10.
  • the strength of this plug member 10 is measured, and whether or not a defect, such as clearance, exists in this plug member 10 is determined.
  • Fig. 5 shows the relation between the amount of addition of the foaming material and the strength of the plug member 10 so measured.
  • Table 1 represents the relation between the amount of addition of the foaming material and the number of defects of the plug members 10 inspected.
  • the number of defects in this table represents the number of the plug members 10 in which clearance is found among the plug members 10 at a large number of cell end portions 50.
  • the ceramic honeycomb body 5 in this ceramic honeycomb body 5 has about 12,000 cell end portions on both end faces, and about 6,000 plug members 10 are produced).
  • Addition amount of foaming material (wt%) Number of defects 0 43 0.1 7 0.5 0 1 0 5 8 10 ⁇ 100 20 ⁇ 100
  • the optimal amount of addition of the foaming agent is 0.1 to 5wt%.
  • This invention provides a plugging method, for a ceramic honeycomb body, that does not create clearance in plug members closing cell end portions.
  • a ceramic honeycomb body 5 having a large number of cells 55 partitioned by partitions 51 and cell end portions 50 plugged by plug members
  • end faces of the ceramic honeycomb body are immersed in a plug member slurry 1 while the cell end portions 50 not provided with the plug member are covered with a masking material 90, and are then dried and heated.
  • the plug member slurry 1 contains ceramic particles, a foaming material and water or an oil solvent.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Materials (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Compositions Of Oxide Ceramics (AREA)
EP20020006786 2001-03-26 2002-03-25 Procédé d'obturation pour stucture céramique en nid d'abeille Expired - Fee Related EP1245360B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2001088345 2001-03-26
JP2001088345 2001-03-26
JP2002049695 2002-02-26
JP2002049695A JP4019732B2 (ja) 2001-03-26 2002-02-26 セラミックハニカム成形体の栓詰め方法

Publications (3)

Publication Number Publication Date
EP1245360A2 true EP1245360A2 (fr) 2002-10-02
EP1245360A3 EP1245360A3 (fr) 2003-10-08
EP1245360B1 EP1245360B1 (fr) 2006-12-20

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EP (1) EP1245360B1 (fr)
JP (1) JP4019732B2 (fr)
DE (1) DE60216840T2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004052502A1 (fr) 2002-12-11 2004-06-24 Ngk Insulators, Ltd. Corps a structure en nid d'abeille scelle et procede de production de celui-ci
FR2855449A1 (fr) * 2003-05-30 2004-12-03 Denso Corp Procede de fabrication d'un filtre d'epuration des gaz d'echappement
DE102007000412B4 (de) * 2006-08-31 2009-12-31 DENSO CORPORATION, Kariya-shi Verfahren zum Verpfropfen eines Bienenwabenstrukturkörpers
WO2010072971A1 (fr) * 2008-12-23 2010-07-01 Saint-Gobain Centre De Recherches Et D'etudes Europeen Structure filtrante dont les faces d'entree et de sortie presentent un materiau de bouchage different
WO2011026056A1 (fr) * 2009-08-31 2011-03-03 Corning Incorporated Procédés de fabrication de réacteurs de corps extrudé
US8017067B2 (en) 2006-08-29 2011-09-13 Corning Incorporated Method of making a single fire honeycomb structure
US20140116600A1 (en) * 2012-10-30 2014-05-01 Bell Helicopter Textron Inc. Method of Repairing, Splicing, Joining, Machining, and Stabilizing Honeycomb Core Using Pourable Structural Foam and a Structure Incorporating the Same
US8974722B1 (en) * 2013-03-15 2015-03-10 Ibiden Co., Ltd. Method for manufacturing aluminum-titanate-based ceramic honeycomb structure

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4546171B2 (ja) * 2004-07-08 2010-09-15 株式会社キャタラー 基材コーティング方法
KR100721824B1 (ko) 2005-12-22 2007-05-28 주식회사 포스코 허니컴 필터의 셀 플러깅 장치 및 그 방법
JP4946274B2 (ja) * 2006-08-31 2012-06-06 株式会社デンソー セラミックハニカム成形体の栓詰め方法
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
JP2008056528A (ja) * 2006-08-31 2008-03-13 Denso Corp 栓詰め用スラリー及び栓詰めハニカム体の製造方法
JP5147503B2 (ja) * 2008-04-02 2013-02-20 株式会社ニッカトー 一端封止型ゼオライト膜用基体管
WO2012014684A1 (fr) * 2010-07-28 2012-02-02 住友化学株式会社 Comprimé
JP5847027B2 (ja) * 2012-06-21 2016-01-20 日本特殊陶業株式会社 ハニカム構造体の製造方法
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
US9015941B2 (en) 2012-10-30 2015-04-28 Bell Helicopter Textron Inc. Method of repairing honeycomb core using pourable structural foam
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455180A (en) * 1981-08-24 1984-06-19 Corning Glass Works Method of fabricating a sintered and selectively plugged honeycomb structure
US5364573A (en) * 1992-04-08 1994-11-15 Schott Glaswerke Process and apparatus for producing a filter in the form of a monolithic honeycomb body
EP0677498A2 (fr) * 1994-04-12 1995-10-18 Corning Incorporated Procédé d'obturation sélective de bouts ouverts d'une structure céramique en nid d'abeilles
WO2000048807A1 (fr) * 1999-02-17 2000-08-24 Corning Incorporated Procede ameliore de fabrication de filtres multicellulaires

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455180A (en) * 1981-08-24 1984-06-19 Corning Glass Works Method of fabricating a sintered and selectively plugged honeycomb structure
US5364573A (en) * 1992-04-08 1994-11-15 Schott Glaswerke Process and apparatus for producing a filter in the form of a monolithic honeycomb body
EP0677498A2 (fr) * 1994-04-12 1995-10-18 Corning Incorporated Procédé d'obturation sélective de bouts ouverts d'une structure céramique en nid d'abeilles
WO2000048807A1 (fr) * 1999-02-17 2000-08-24 Corning Incorporated Procede ameliore de fabrication de filtres multicellulaires

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1570893A1 (fr) * 2002-12-11 2005-09-07 Ngk Insulators, Ltd. Corps a structure en nid d'abeille scelle et procede de production de celui-ci
EP1570893A4 (fr) * 2002-12-11 2006-10-04 Ngk Insulators Ltd Corps a structure en nid d'abeille scelle et procede de production de celui-ci
US7507460B2 (en) 2002-12-11 2009-03-24 Ngk Insulators, Ltd. Plugged honeycomb structure and method of manufacturing the same
WO2004052502A1 (fr) 2002-12-11 2004-06-24 Ngk Insulators, Ltd. Corps a structure en nid d'abeille scelle et procede de production de celui-ci
FR2855449A1 (fr) * 2003-05-30 2004-12-03 Denso Corp Procede de fabrication d'un filtre d'epuration des gaz d'echappement
US8017067B2 (en) 2006-08-29 2011-09-13 Corning Incorporated Method of making a single fire honeycomb structure
DE102007000412B4 (de) * 2006-08-31 2009-12-31 DENSO CORPORATION, Kariya-shi Verfahren zum Verpfropfen eines Bienenwabenstrukturkörpers
WO2010072971A1 (fr) * 2008-12-23 2010-07-01 Saint-Gobain Centre De Recherches Et D'etudes Europeen Structure filtrante dont les faces d'entree et de sortie presentent un materiau de bouchage different
WO2011026056A1 (fr) * 2009-08-31 2011-03-03 Corning Incorporated Procédés de fabrication de réacteurs de corps extrudé
US20140116600A1 (en) * 2012-10-30 2014-05-01 Bell Helicopter Textron Inc. Method of Repairing, Splicing, Joining, Machining, and Stabilizing Honeycomb Core Using Pourable Structural Foam and a Structure Incorporating the Same
CN103786867A (zh) * 2012-10-30 2014-05-14 贝尔直升机德事隆公司 使用可浇注的结构泡沫对蜂窝状芯进行修复、拼接、接合、机械加工和稳定化的方法及结构
CN103786867B (zh) * 2012-10-30 2016-06-29 贝尔直升机德事隆公司 使用可浇注的结构泡沫对蜂窝状芯进行修复、拼接、接合、机械加工和稳定化的方法及结构
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
US8974722B1 (en) * 2013-03-15 2015-03-10 Ibiden Co., Ltd. Method for manufacturing aluminum-titanate-based ceramic honeycomb structure

Also Published As

Publication number Publication date
EP1245360B1 (fr) 2006-12-20
JP4019732B2 (ja) 2007-12-12
JP2002356386A (ja) 2002-12-13
DE60216840T2 (de) 2007-08-30
EP1245360A3 (fr) 2003-10-08
DE60216840D1 (de) 2007-02-01

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