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WO2016121784A1 - Structure en nid d'abeilles et son procédé de fabrication - Google Patents

Structure en nid d'abeilles et son procédé de fabrication Download PDF

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Publication number
WO2016121784A1
WO2016121784A1 PCT/JP2016/052247 JP2016052247W WO2016121784A1 WO 2016121784 A1 WO2016121784 A1 WO 2016121784A1 JP 2016052247 W JP2016052247 W JP 2016052247W WO 2016121784 A1 WO2016121784 A1 WO 2016121784A1
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WIPO (PCT)
Prior art keywords
honeycomb structure
ring
honeycomb
grinding
longitudinal direction
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.)
Ceased
Application number
PCT/JP2016/052247
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English (en)
Japanese (ja)
Inventor
博規 村上
尚平 谷奥
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Ibiden Co Ltd
Original Assignee
Ibiden Co Ltd
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Filing date
Publication date
Application filed by Ibiden Co Ltd filed Critical Ibiden Co Ltd
Publication of WO2016121784A1 publication Critical patent/WO2016121784A1/fr
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Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials

Definitions

  • the present invention relates to a honeycomb structure and a manufacturing method thereof.
  • particulates such as soot contained in exhaust gas exhausted from internal combustion engines such as buses, trucks, passenger cars, etc. and construction machinery, etc. (hereinafter also referred to as PM) have been harmful to the surrounding environment and human body. It is a problem. Therefore, various types of filters using a honeycomb structure made of porous ceramics have been proposed as filters for collecting PM in exhaust gas and purifying the exhaust gas.
  • the porous ceramic members constituting these honeycomb structures are usually provided with a large number of through holes arranged in one direction, and partition walls separating the through holes function as a filter. That is, the through-hole formed in the porous ceramic member forms a sealing portion in which either the inlet side or the outlet side end of the exhaust gas is sealed by the filling member, and the exhaust gas flowing into one through-hole The gas always passes through the partition walls separating the through holes and then flows out from the other through holes. When exhaust gas passes through these partition walls, the particulates are trapped in the partition walls, and the exhaust gas is purified. Is done.
  • such a honeycomb structure functioning as a ceramic filter is formed by bonding a plurality of porous ceramic members together through an adhesive layer to form a honeycomb aggregate, and grinding the honeycomb aggregate into a predetermined shape.
  • the ceramic block is manufactured by providing a seal body on the outer peripheral surface thereof.
  • the honeycomb structure having such a shape was formed by grinding a substantially prismatic honeycomb aggregate to form a substantially cylindrical outer peripheral surface and a ring-shaped convex portion surrounding the entire periphery of the outer peripheral surface. Therefore, the entire honeycomb structure including the ring-shaped convex portion is composed of a porous ceramic member (see Patent Document 1).
  • the manufacturing method of the honeycomb structure is sophisticated, the price of the honeycomb structure is also expensive.
  • the honeycomb structure is composed of a porous ceramic member as thin partition walls on the order of ⁇ m, the “nothing portion” that is a through hole occupies the majority. Therefore, the strength of the honeycomb structure is weak, and the ring-shaped convex portion formed of the honeycomb structure may be broken when an impact is applied in the manufacturing process or use environment.
  • the present invention is proposed in view of the above-described circumstances, and is a honeycomb structure including a ring-shaped convex portion, which has a reduced price and improved the strength of the ring-shaped convex portion, and this An object of the present invention is to provide a method for manufacturing such a honeycomb structure.
  • the honeycomb structure of the present invention includes a plurality of prismatic porous ceramic members each having a plurality of through-holes arranged in parallel in the longitudinal direction with partition walls interposed therebetween, and is bonded through a bonding layer.
  • a honeycomb structure including a ring-shaped protrusion that surrounds the entire outer peripheral surface of the honeycomb structure, and 30 to 50% by volume of the ring-shaped protrusion is constituted by a filling member. . It is preferable that 40 to 50% by volume of the ring-shaped convex portion is constituted by the filling member.
  • the honeycomb structure of the present invention 30 to 50% by volume, preferably 40 to 50% by volume, of the ring-shaped convex portion that does not require a filter function is composed of an inexpensive filling member, thereby reducing the price of the honeycomb structure. can do. Further, 30 to 50% by volume, preferably 40 to 50% by volume of the ring-shaped convex part is constituted by the filling member, whereby the strength of the ring-shaped convex part is improved and mechanically robust. Therefore, damage to the ring protrusion can be prevented even if an impact is applied in the manufacturing process or use environment.
  • the honeycomb structure of the present invention has a substantially rotationally symmetric outer peripheral surface around an axis extending in the longitudinal direction of the honeycomb structure, and the ring-shaped convex portion is formed so as to surround the outer peripheral surface. preferable. By providing such a ring-shaped protrusion, the honeycomb structure can be reliably fixed in the casing.
  • the honeycomb structure of the present invention preferably includes a filling layer formed of the filling member in a portion exceeding a predetermined distance in the direction of 0, 3, 6:00, and 9:00 with respect to the axis extending in the longitudinal direction. Moreover, it is preferable that the said packed bed becomes the maximum in the direction of 0 o'clock, 3 o'clock, 6 o'clock and 9 o'clock about the axis extending in the longitudinal direction.
  • the honeycomb structure of the present invention includes a filling layer formed of a filling member at a predetermined distance in the direction of 0 o'clock, 3 o'clock, 6 o'clock and 9 o'clock, and the thickness of the filling layer is 0 o'clock, 3 o'clock, 6 o'clock Further, the thickness becomes maximum in the direction of 9 o'clock, and 30 to 50% by volume, preferably 40 to 50% by volume in the ring-shaped convex portion can be constituted by the filling member.
  • the method for manufacturing a honeycomb structure according to the present invention includes a honeycomb structure in which a plurality of prismatic porous ceramic members each having a plurality of through holes arranged in parallel in the longitudinal direction with a partition wall therebetween are bundled through an adhesive layer.
  • Forming a ring-shaped convex portion that surrounds the ring-shaped convex portion, and 30 to 50% by volume of the ring-shaped convex portion is constituted by a filling member. It is preferable that 40 to 50% by volume of the ring-shaped convex portion is constituted by the filling member.
  • the method for manufacturing a honeycomb structure according to the present invention reduces the cost because 30 to 50% by volume, preferably 40 to 50% by volume, of the ring-shaped convex portion that does not require a filter function is constituted by an inexpensive filling member.
  • a honeycomb structure can be provided.
  • 30 to 50% by volume, preferably 40 to 50% by volume of the ring-shaped convex part is composed of the filling member, thereby improving the strength of the ring-shaped convex part and providing a mechanically robust honeycomb structure. can do.
  • the honeycomb structure can be rotationally driven around the first axis extending in the longitudinal direction, and the distance from the first axis can be controlled along the longitudinal direction.
  • the first to third grinding regions are formed by the first to third grinding steps, so that 30 to 50% by volume, preferably 40 to 40% of the ring-shaped convex portion is formed. 50% by volume can be constituted by the filling member.
  • the present invention by using 30 to 50% by volume of the ring-shaped convex portion provided in the honeycomb structure with the filling member, the amount of expensive porous ceramic used can be reduced and the price of the honeycomb structure can be reduced. be able to. Further, by constituting 30-50% by volume of the ring-shaped convex portion with the filling member, the strength of the ring-shaped convex portion can be improved and mechanically robust.
  • FIG.1 (a) is a perspective view which shows typically an example of a honeycomb structure
  • FIG.1 (b) is a side view of Fig.1 (a).
  • FIG. 2A is a perspective view schematically showing an example of a ceramic block
  • FIG. 2B is a side view of FIG.
  • FIG. 3 is a perspective view schematically showing an example of the honeycomb aggregate in which the slurry of the filling member is applied to the four sides.
  • FIG. 4A is a perspective view schematically showing an example of a honeycomb fired body constituting the honeycomb structure
  • FIG. 4B is a cross-sectional view taken along the line BB.
  • 5 (a), 5 (b) and 5 (c) are diagrams showing a series of grinding steps in which a honeycomb block having a filler layer formed on four sides is ground to form a ceramic block.
  • the honeycomb structure of the present invention and the manufacturing method thereof will be specifically described.
  • the present invention is not limited to the following configurations, and can be applied with appropriate modifications without departing from the scope of the present invention.
  • the present invention also includes a combination of two or more desirable configurations of the present invention described below.
  • Fig. 1 (a) is a perspective view schematically showing an example of a honeycomb structure
  • Fig. 1 (b) is a side view thereof.
  • the honeycomb structure 10 uses a ceramic block 20 formed by grinding a honeycomb aggregate formed by bonding a plurality of honeycomb fired bodies 40 made of porous ceramic members serving as a unit that functions as a filter with an adhesive layer 35 and binding the outer peripheral surface thereof.
  • the outer peripheral sealing material layer 12 is formed on the outer periphery.
  • the side surface of the column when the honeycomb structure 10 having a substantially rotationally symmetric shape is regarded as a column is defined as the outer peripheral surface 11 of the honeycomb structure 10.
  • the ring-shaped convex portion 15 is sandwiched between the first grinding region 14 and the second grinding region 19. Is provided.
  • the ring-shaped convex portion 15 surrounds the outer peripheral surface 11 of the honeycomb structure 10 and protrudes in a bowl shape toward the outside of the honeycomb structure 10, and includes a first tapered region 16, a second tapered region 17, and a central grinding region 18.
  • Have The central grinding region 18 has a crown portion 18a having a predetermined diameter, and a notch portion 18b formed in the direction of 0 o'clock, 3 o'clock, 6 o'clock and 9 o'clock in the longitudinal direction.
  • the ring-shaped convex portion 15 is also included in the outer peripheral surface 11 of the honeycomb structure 10.
  • FIG. 2 (a) is a perspective view schematically showing an example of a ceramic block
  • FIG. 2 (b) is a side view thereof.
  • the side surface of a cylinder when the ceramic block 20 is considered as a cylinder is defined as the outer peripheral surface 21 of a ceramic block.
  • a ring-shaped convex portion 25 sandwiched between the first grinding region 24 and the second grinding region 29 is provided in the central portion in the longitudinal direction of the ceramic block 20.
  • the ring-shaped convex portion 25 surrounds the outer peripheral surface 21 of the ceramic block 20 and projects in a bowl shape toward the outside of the ceramic block 20, and has a first tapered region 26, a second tapered region 27, and a central grinding region 28.
  • the central grinding region 28 has a top portion 28a having a predetermined diameter, and a notch portion 28b formed in the direction of 0:00, 3:00, 6:00 and 9:00 in the longitudinal direction.
  • a plurality of honeycomb fired bodies 40 are joined and bonded together by an adhesive layer 35, and a honeycomb aggregate formed by applying a slurry of a filler member on four sides to form a filler layer is formed in the first longitudinal direction.
  • the first axis L1 is formed by rotating and grinding, and the first axis L1 is in a portion exceeding a predetermined distance from the first axis L1 in the direction of 0, 3, o'clock, and 9 o'clock.
  • It has the filling layer 22 which consists of a filling member.
  • the filling member contains at least silicon carbide particles and silica. This predetermined distance does not reach the radius of the first grinding region 24 and the second grinding region 29.
  • the predetermined distance is 96% of the radius of the first grinding region and the second grinding region 29.
  • the thickness of the filling layer 22 is maximized in the directions of these 0 o'clock, 3 o'clock, 6 o'clock and 9 o'clock.
  • 30 to 30 of the ring-shaped convex portions 25 of the ceramic block 20 are provided by providing the filling layer 22 in the direction of 0 o'clock, 3 o'clock, 6 o'clock and 9 o'clock and exceeding the predetermined distance.
  • 50% by volume preferably 40 to 50% by volume
  • the ring-shaped convex portion 25 having no filter function affects the filter function of the honeycomb fired body 40 even if 30 to 50% by volume, preferably 40 to 50% by volume, is formed by the filling layer 22 of the filling member. Will not affect. Further, if the proportion of the filling layer 22 in the first grinding region 24 and the second grinding region 29 is small, the influence on the filter function of the honeycomb structure 10 can be reduced.
  • the filling layer 22 by the filling member is filled in a portion where the honeycomb fired body 40 or the adhesive layer 35 is not present, and forms an outer peripheral surface 21 including the ring-shaped convex portion 25.
  • the desired shape of the outer peripheral surface 21 can be formed by the honeycomb fired body 40, the adhesive layer 35, and the filling layer 22.
  • the price of the honeycomb structure 10 is reduced by providing the honeycomb structure 10 with the filling layer 22 made of an inexpensive filling member as compared with the expensive honeycomb fired body 40. Moreover, since the filling layer 22 by a filling member is robust, the ring-shaped convex part 15 containing such a filling layer 22 also becomes mechanically robust, and can prevent a failure
  • the outer peripheral sealing material layer 12 covers the outer peripheral surface 21 of the ceramic block 20.
  • the thickness of the outer peripheral sealing material layer 12 is preferably capable of filling the unevenness of the honeycomb fired body 40 exposed on the outer peripheral surface 21 of the ceramic block 20.
  • FIG. 3 is a perspective view schematically showing an example of a honeycomb aggregate formed by binding a plurality of honeycomb fired bodies and applying a slurry of a filling member on four sides to form a packed layer.
  • Fig. 4 (a) is a perspective view schematically showing an example of the honeycomb fired body, and
  • Fig. 4 (b) is a cross-sectional view taken along the line BB.
  • a honeycomb fired body 40 shown in FIG. 4 (a) has a substantially prismatic shape, and a large number of through holes 41 are arranged in parallel in the longitudinal direction (direction b in FIG. 4 (a)) with a cell wall 43 therebetween.
  • the porous ceramic member forms a cell in which any end portion of the through hole 41 is sealed with the sealing material 42. Therefore, the exhaust gas G that has flowed into the cell (through hole 41) having one end face opened always passes through the cell wall 43 separating the cell (through hole 41), and then another cell (through hole) having the other end face opened. 41). Therefore, the cell wall 43 functions as a filter for collecting PM and the like.
  • honeycomb fired body 40 in the longitudinal direction, four rows in the vertical direction and four rows in the horizontal direction, a total of 16 honeycomb fired bodies 40 are bonded and bonded together by the adhesive layer 35, and the honeycomb aggregate
  • the body 30 is configured. Further, on the four sides 32 of the outer peripheral surface 31 of the honeycomb aggregate 30, a filling layer 33 was formed by applying a slurry of a filling member with a predetermined width and a predetermined width along the first axis L1, and the four sides were applied. A honeycomb aggregate 30 is obtained. Then, the honeycomb aggregate 30 coated with the four sides is ground while rotating around the first axis L1 to form the ceramic block 20 as shown in FIG. The filling layer 22 in the ceramic block 20 is formed by grinding the filling layer 33 of the honeycomb aggregate 30 coated with four sides.
  • ⁇ -type silicon carbide powder having an average particle size of 10 ⁇ m and 3000 parts by weight of ⁇ -type silicon carbide powder having an average particle size of 0.5 ⁇ m are dry-mixed, and an organic binder is added to 10000 parts by weight of the resulting mixture.
  • (Methylcellulose) 570 parts by weight and 1770 parts by weight of water were added and kneaded to obtain a mixed composition.
  • the produced shape was dried to obtain a ceramic dried body.
  • 7400 parts by weight of ⁇ -type silicon carbide powder having an average particle size of 10 ⁇ m, 2100 parts by weight of ⁇ -type silicon carbide powder having an average particle size of 0.5 ⁇ m, 120 parts by weight of methylcellulose, 460 parts by weight of an ester organic solvent, and ether 1470 parts by weight of the organic solvent and 370 parts by weight of the glycol-based organic solvent were added to obtain a sealing material paste of the kneaded mixed composition. This sealing material paste was filled in the opening of a predetermined cell.
  • the honeycomb fired body 40 has dimensions of 34.3 mm ⁇ 34.3 mm ⁇ 127 mm (H ⁇ W ⁇ L), a porosity of 42%, an average pore diameter of 11 ⁇ m, a cell density of 240 cells / square inch (cpsi), cell
  • the partition wall thickness is 0.28 mm.
  • a heat-resistant bonding material paste was prepared.
  • the composition of this bonding material paste is 30% by weight of alumina fibers having an average fiber length of 20 ⁇ m and an average fiber diameter of 2 ⁇ m, 21% by weight of silicon carbide particles having an average particle diameter of 0.6 ⁇ m, 15% by weight of silica sol, 5.6% by weight of carboxymethyl cellulose. And 28.4% by weight of water.
  • the viscosity of the bonding material paste is 30 Pa ⁇ s (room temperature).
  • Each spacer is a disk made of cardboard coated with an adhesive material on both sides and having a diameter of 5 mm and a thickness of 1 mm.
  • a single spacer was attached to each corner of each side surface of each honeycomb fired body 40. Each spacer was attached at a position separated by 6.5 mm from each of the two sides defining the corner of the honeycomb fired body 40.
  • the honeycomb fired bodies 40 with spacers were bundled into 4 ⁇ 4 pieces, and a honeycomb aggregate (see FIG. 3) was assembled.
  • the honeycomb aggregate was installed in the paste supply chamber attached to the bonding material paste supply device.
  • the internal dimensions of the paste supply chamber are 141 mm ⁇ 141 mm ⁇ 127 mm (H ⁇ W ⁇ L).
  • the bonding material paste supply device includes three supply grooves having a width of 5 mm formed at positions corresponding to the gaps between the honeycomb fired bodies 40 in the honeycomb aggregate. Each supply groove communicates the inner surface of the paste supply chamber and the inside of the bonding material paste supply apparatus.
  • the paste supply chamber has a bottom plate that can be opened and closed at the end opposite to the end attached to the bonding material paste supply device. The bottom plate was closed and the bottom plate was brought into contact with the end face of the honeycomb aggregate to seal the gap between the honeycomb fired bodies 40.
  • the bonding material paste was put into the paste supply chamber of the bonding material paste supply device.
  • the bonding material paste is injected from the inner surface of the paste supply chamber to the side surface of the honeycomb assembly at a pressure of 0.2 MPa, and injected to the end surface of the honeycomb assembly opposite to the end surface in contact with the bottom plate at a pressure of 0.05 MPa. did. Thereby, the bonding material paste was filled in the gaps between the honeycomb fired bodies 40.
  • the honeycomb aggregate was dried at 100 ° C. for 1 hour to cure the bonding material paste. After curing, a honeycomb aggregate 30 (see FIG. 3) integrated with an adhesive layer 35 made of a bonding agent having a thickness of 1 mm was obtained.
  • ceramic fiber made of alumina silicate as inorganic fiber shot content 3%, average fiber length 20 ⁇ m, average fiber diameter 6 ⁇ m) 22.3% by weight, silicon carbide powder 30. 2% by weight, silica sol (SiO 2 content 30% by weight in sol) 7% by weight as inorganic binder, carboxymethylcellulose 0.5% by weight as organic binder, and 39% by weight of water are mixed and kneaded, A filling layer forming paste to be a slurry of the filling member was prepared.
  • the filling layer forming paste provided as the slurry of the filling member is applied to the four sides 32 of the outer peripheral surface 31 of the honeycomb aggregate 30 and dried at 700 ° C. for 2 hours to cure the filling layer forming paste, and the filling layer by the filling member 33 was formed, and a honeycomb aggregate 30 (see FIG. 3) coated with four sides was obtained.
  • the honeycomb aggregate 30 coated with four sides was cut to produce a cylindrical ceramic block 20 (see FIG. 2) having a diameter of 143 mm excluding the ring-shaped convex portions.
  • This grinding process forms the first grinding region 24 and the first taper region 26 in the ceramic block 20, subsequently forms the second grinding region 29 and the second taper region 27, and finally the center grinding. This was performed by a series of grinding steps for forming the region 28.
  • the ceramic block 20 produced in the present example has a cylindrical shape excluding the ring-shaped convex portion 25, and has a cylindrical diameter of about 140 to 150 mm and a longitudinal length of 100. ⁇ 170 mm. Further, the shape of the ring-shaped convex portion 25 is such that the width X2 in FIG. 2B is 19 to 21 mm, the height Y3 of the top 18a is 5 to 6 mm in the central grinding region 28, and the notch 18b The height Y4 is 3 to 4 mm. The heights Y3 and Y4 are based on the first grinding region 24 or the second grinding region 29 on a substantially cylindrical shape. The same applies to the following. The angle ⁇ 3 at which the first taper region 26 rises and the angle ⁇ 4 at which the second taper region 27 rises are both 27 to 43 degrees.
  • the first end 30a and the second end 30b of the honeycomb aggregate 30 are sandwiched and gripped by a gripping means of a rotating device (not shown), It is driven to rotate at a predetermined rotational speed around the first axis L1 along the longitudinal direction.
  • the second axis is parallel to the first axis L1 and is driven to rotate along the second axis L2 that can control the separation distance from the first axis L1, and moves along the second axis L2.
  • a rotating grindstone 100 that is rotationally symmetric about the axis L2 is provided. Then, the honeycomb aggregate 30 is ground by using the rotating grindstone 100 that is rotated around the second axis L2 while being rotated around the first axis L1 by the rotating device.
  • the rotary grindstone 100 is formed with a predetermined diameter along the second rotation axis L2, and has an outer peripheral portion 101 having a predetermined length in the direction of the second rotation axis L2. Further, the first tapered portion 102 having a predetermined length gradually decreases in diameter from the outer peripheral portion 101 to the first end portion 30a side of the honeycomb aggregate 30 along the second rotation axis L2. Furthermore, it has the 2nd taper part 103 of the predetermined length in which a diameter becomes small gradually from the outer peripheral part 101 to the 2nd end part 30b side of the honeycomb aggregate 30 along the 2nd rotating shaft L2.
  • the first tapered portion 102 and the second tapered portion 103 are formed so as to be symmetric with respect to one plane orthogonal to the second axis L2.
  • the first distance from the first end 30a of the honeycomb aggregate 30 toward the second end 30b is extended along the second axis L2. Then, the rotating grindstone 100 was moved to form the first grinding region 24 and the first taper region 26 as the outer peripheral surface 31 of the honeycomb aggregate 30.
  • the second distance from the second end portion 30b of the honeycomb aggregate 30 toward the first end portion 30a is extended along the second axis L2.
  • the rotary grindstone 100 was moved to form the second grinding region 29 and the second taper region 27.
  • the second predetermined distance is provided along the second axis L2 from the position where the second grinding step is finished toward the first end 30a.
  • the rotating grindstone 100 was moved to form the central grinding area 28.
  • the ceramic block 20 ground to a predetermined shape was obtained by such first to third grinding steps.
  • a coating layer forming paste was prepared by mixing and kneading 0.5% by weight of carboxymethyl cellulose and 39% by weight of water as an organic binder.
  • the coating layer forming paste has the same composition as the filling layer forming paste.
  • the coating layer forming paste was applied to the outer surface of the ceramic block 20 and dried at 120 ° C. for 1 hour to cure the coating layer forming paste and form the outer peripheral sealing material layer 12.
  • the thickness of the outer peripheral sealing material layer 12 was 0.05 to 1.0 mm.
  • the thickness of the outer peripheral sealing material layer 12 means not the thickness of the outer peripheral sealing material layer in the ring-shaped convex portion 15 but the thickness of the outer peripheral sealing material layer 12 in a portion other than the ring-shaped convex portion 15.
  • the honeycomb structure 10 manufactured in the present example has a columnar shape excluding the ring-shaped convex portion 15 and has a columnar diameter of about 140 to 150 mm and a length in the longitudinal direction. 100 to 170 mm. Further, the shape of the ring-shaped convex portion 15 is such that the width X1 in FIG. 1B is 20 to 22 mm, the height Y1 of the crown 18a is 6 to 7 mm in the central grinding region 18, and the notch 18b The height Y2 is 4 to 5 mm. The angle ⁇ 1 at which the first tapered region 16 rises and the angle ⁇ 2 at which the second tapered region 17 rises are both 27 to 43 degrees.
  • the honeycomb structure 10 of this example 30 to 50% by volume of the ring-shaped convex portion 15 is formed by the filling layer 22 made of an inexpensive filling member. Therefore, the portion constituted by the expensive honeycomb fired body 40 is reduced, and the price of the honeycomb structure 10 is reduced. Moreover, the ring-shaped convex part 15 containing the filling layer 22 by a filling member has improved strength and has a robust structure.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

Cette invention concerne une structure en nid d'abeilles 10 comprenant une pluralité de corps calcinés en nid d'abeilles 40 sous forme de piliers carrés liés entre eux par des couches adhésives 35, les corps calcinés en nid d'abeilles 40 contenant de multiples trous traversants alignés dans un sens longitudinal a et séparés les uns des autres par des parois de séparation. La structure en nid d'abeilles 10 comprend une protubérance annulaire 15 qui entoure la surface circonférentielle extérieure 11 de la structure sur toute sa circonférence, un volume de 30 à 50 % de la protubérance annulaire 15 étant composé d'un élément de remplissage. Par conséquent, l'invention réduit le coût et améliore la résistance de la structure en nid d'abeilles comportant ladite protubérance annulaire.
PCT/JP2016/052247 2015-01-29 2016-01-27 Structure en nid d'abeilles et son procédé de fabrication Ceased WO2016121784A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016208525B4 (de) * 2015-05-25 2018-03-29 Honda Motor Co., Ltd. Abgasreinigungsvorrichtung für Verbrennungsmotor
JP2018051537A (ja) * 2016-09-30 2018-04-05 日本碍子株式会社 ハニカム構造体
CN110195627A (zh) * 2018-02-27 2019-09-03 本田技研工业株式会社 排气净化装置

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Publication number Priority date Publication date Assignee Title
JP2001314718A (ja) * 2000-05-09 2001-11-13 Ngk Insulators Ltd セラミックハニカムフィルタ及びその製造方法
JP2010184218A (ja) * 2009-02-13 2010-08-26 Ngk Insulators Ltd ハニカム構造体
JP2014064978A (ja) * 2012-09-25 2014-04-17 Ngk Insulators Ltd ハニカム構造体
WO2014061320A1 (fr) * 2012-10-19 2014-04-24 日本碍子株式会社 Filtre en nid d'abeilles de collecte de poussières

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001314718A (ja) * 2000-05-09 2001-11-13 Ngk Insulators Ltd セラミックハニカムフィルタ及びその製造方法
JP2010184218A (ja) * 2009-02-13 2010-08-26 Ngk Insulators Ltd ハニカム構造体
JP2014064978A (ja) * 2012-09-25 2014-04-17 Ngk Insulators Ltd ハニカム構造体
WO2014061320A1 (fr) * 2012-10-19 2014-04-24 日本碍子株式会社 Filtre en nid d'abeilles de collecte de poussières

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016208525B4 (de) * 2015-05-25 2018-03-29 Honda Motor Co., Ltd. Abgasreinigungsvorrichtung für Verbrennungsmotor
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