WO2013183612A1 - ハニカム構造体成形用口金及びその製造方法 - Google Patents
ハニカム構造体成形用口金及びその製造方法 Download PDFInfo
- Publication number
- WO2013183612A1 WO2013183612A1 PCT/JP2013/065417 JP2013065417W WO2013183612A1 WO 2013183612 A1 WO2013183612 A1 WO 2013183612A1 JP 2013065417 W JP2013065417 W JP 2013065417W WO 2013183612 A1 WO2013183612 A1 WO 2013183612A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hole
- plate
- honeycomb structure
- opening
- forming
- Prior art date
Links
Images
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
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/26—Extrusion dies
- B28B3/269—For multi-channeled structures, e.g. honeycomb structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies
- B23P15/243—Honeycomb dies
Definitions
- the present invention relates to a die for forming a honeycomb structure and a manufacturing method thereof. More specifically, the present invention relates to a die for forming a honeycomb structure that can suppress the occurrence of distortion of the honeycomb structure when the honeycomb structure is manufactured, and a method for manufacturing the same.
- a die for forming a honeycomb structure has been used as a die for extrusion forming for manufacturing a ceramic honeycomb structure by extruding a ceramic raw material.
- a slit is formed so as to communicate with a second plate-like part formed with a plurality of back holes that are open on both sides and a back hole formed in the second plate-like part.
- the first plate-like portion thus formed is laminated and formed.
- the second plate-like member having the back hole formed therein and the first plate-like member are joined by hot pressing, and the first plate-like member is A slit communicating with the back hole is formed (see, for example, Patent Document 1).
- the slit width is very narrow compared to the diameter of the back hole. For this reason, when the ceramic raw material is introduced from the back hole, the pressure in the back hole is increased and stress is easily concentrated on the slit. Therefore, wear and deformation of the slit are likely to occur, which is a problem.
- the die described in Patent Document 2 includes a molding groove (slit) formed on the front surface side and a molding portion having a square-shaped opening formed on the rear surface side, and a die base portion on which a through hole portion is formed. It is a clasp.
- the die has a molded part made of a wear-resistant alloy.
- JP 2006-51682 A Japanese Patent Publication No. 6-22806
- the diameter of the circular cross-sectional shape of the through-hole portion is longer than one side of the cross-sectional shape of the quadrangle of the opening and shorter than the diagonal line of the cross-sectional shape of the quadrangle of the opening.
- the center of an opening and the center of a through-hole part are arrange
- the opening and the through-hole portion are in a shifted state.
- the “displaced state” means that the center position does not match, and the outer periphery (outer edge) of the opening of the opening intersects with the outer periphery (outer edge) of the opening of the through hole. Means the state.
- the state where the opening part of an opening and the opening part of a through-hole part do not overlap at all is also included.
- the present invention has been made in view of the above problems.
- the diameter of the hole is different from the diameter of the back hole.
- the opening of the hole in the first bonding surface is disposed inside the opening of the back hole in the second bonding surface, or the opening of the back hole in the second bonding surface. Is disposed inside the opening of the hole in the first joint surface. Therefore, the present invention provides a die for forming a honeycomb structure that can suppress the occurrence of distortion in the honeycomb structure and can improve the moldability when the honeycomb structure is formed. And
- the present invention provides the following die for forming a honeycomb structure and a method for manufacturing the same.
- a second plate-shaped portion having a second joint surface and having a back hole for introducing a molding raw material, and a molding raw material having a first joint surface and communicating with the back hole.
- a first plate-shaped portion made of a tungsten carbide-based cemented carbide alloy in which a slit for forming the hole is formed and a hole portion communicating with the back hole and the slit is formed on the first joint surface side
- the second plate-like part is formed of at least one selected from the group consisting of iron, steel, aluminum alloy, copper alloy, titanium alloy and nickel alloy, and the first plate
- a first portion is disposed on the second plate-like portion so that the first joint surface is in contact with the second joint surface, and the diameter of the opening of the hole portion on the first joint surface is , A diameter different from the diameter of the opening of the back hole in the second joint surface,
- the opening of the hole in the bonding surface is disposed inside the opening of the back hole in the second bonding surface, or the opening of the back hole in the second
- the diameter of the opening of the hole in the first joint surface is larger than the diameter of the opening of the back hole in the second joint surface, and the diameter of the hole in the first joint surface
- the diameter of the opening of the back hole in the second joint surface is larger than the diameter of the opening of the hole in the first joint surface, and the diameter of the back hole in the second joint surface is The die for forming a honeycomb structure according to [1], wherein the diameter of the opening is 1.01 to 1.50 times the diameter of the opening of the hole in the first joint surface.
- the shape of the bottom which is the tip of the hole, is a flat shape in a cross section orthogonal to the surface of the first plate-like portion, and a shape in which corners are cut linearly in the flat shape,
- a plurality of back holes are formed in the second plate member formed of at least one selected from the group consisting of iron, steel, aluminum alloy, copper alloy, titanium alloy, and nickel alloy, and a tungsten carbide base
- the first plate-like member formed of cemented carbide When the first plate-like member formed of cemented carbide is joined to the first plate-like surface and joined to the second plate-like member, it communicates with the back hole and has a diameter of the back hole.
- a plurality of hole portions having a diameter different from that of the second plate-like member formed with the back hole, and a second joint surface that is one surface of the second plate-like member formed with the back hole, and the second portion formed with the hole portion.
- the first plate member and the second plate member are stacked in a state where the first joint surface of the first plate member is opposed to the first plate member and the first plate member.
- a second plate-like member is joined to form a slit communicating with the hole from the surface side of the first plate-like member.
- the die for forming a honeycomb structure of the present invention includes a second plate portion and a first plate portion.
- the second plate-like portion is formed of at least one selected from the group consisting of iron, steel, aluminum alloy, copper alloy, titanium alloy, and nickel alloy. Further, the second plate-like portion has a second joint surface and is formed with a back hole for introducing a forming raw material.
- the first plate-like portion is made of a tungsten carbide base cemented carbide. Further, the first plate-shaped portion has a first joint surface, and is formed with a slit for forming a forming raw material in communication with the back hole, and a hole portion in communication with the back hole and the slit. Is formed on the first joint surface side.
- the first plate-like portion is disposed on the second plate-like portion so that the first joint surface is in contact with the second joint surface. Furthermore, the diameter of the opening of the hole in the first joining surface is different from the diameter of the opening of the back hole in the second joining surface. Further, the opening of the hole in the first bonding surface is disposed inside the opening of the back hole in the second bonding surface, or the opening of the back hole in the second bonding surface. The part is disposed inside the opening of the hole in the first joint surface.
- the manufacturing method of the die for forming a honeycomb structure of the present invention is as follows. That is, a plurality of back holes are formed in the second plate member formed of at least one selected from the group consisting of iron, steel, aluminum alloy, copper alloy, titanium alloy, and nickel alloy. Then, the first joint surface, which is one surface of the first plate member formed of the tungsten carbide base cemented carbide, communicates with the back hole when joined to the second plate member and the back hole A plurality of hole portions having a diameter different from the diameter of the plurality of holes are formed.
- the 2nd joined surface which is one side of the 2nd plate-like member in which the back hole was formed, and the 1st joined surface of the 1st plate-like member in which the hole was formed were made to oppose.
- the first plate-like member and the second plate-like member are stacked, and the first plate-like member and the second plate-like member are joined.
- a slit communicating with the hole is formed to produce a honeycomb structure forming die.
- the diameter of the hole formed in the first plate member and the diameter of the back hole formed in the second plate member are as follows. Different sizes. Therefore, a die for forming a honeycomb structure with good formability can be obtained.
- FIG. 1 is a perspective view schematically showing an embodiment of a die for forming a honeycomb structure of the present invention, viewed from the side of a first plate-like portion where a slit is formed.
- 1 is a perspective view schematically showing one embodiment of a die for forming a honeycomb structure of the present invention, as viewed from the side of a second plate-like part in which a back hole is formed.
- FIG. 2 is an enlarged plan view showing a part of the surface on the first plate-like portion side of the die for forming a honeycomb structure shown in FIG. 1.
- FIG. 4 is a schematic diagram showing an A-A ′ section of the die for forming a honeycomb structure shown in FIG. 3.
- the other embodiment of the die for forming a honeycomb structure of the present invention shows a cross section parallel to the thickness direction, and the opening of the back hole in the second bonding surface is the opening of the hole in the first bonding surface.
- FIG. 6 is a cross-sectional view showing a part of a cross section orthogonal to a slit in still another embodiment of a die for forming a honeycomb structure of the present invention.
- FIG. 6 is a cross-sectional view showing a part of a cross section orthogonal to a slit in still another embodiment of a die for forming a honeycomb structure of the present invention.
- FIG. 6 is a cross-sectional view showing a part of a cross section orthogonal to a slit in still another embodiment of a die for forming a honeycomb structure of the present invention.
- FIG. 6 is a cross-sectional view showing a part of a cross section orthogonal to the surface of a first plate-like portion of still another embodiment of a die for forming a honeycomb structure of the present invention.
- FIG. 6 is a cross-sectional view showing a part of a cross section orthogonal to the surface of a first plate-like portion of still another embodiment of a die for forming a honeycomb structure of the present invention.
- FIG. 6 is a cross-sectional view showing a part of a cross section orthogonal to the surface of a first plate-like portion of still another embodiment of a die for forming a honeycomb structure of the present invention.
- FIG. 6 is a cross-sectional view showing a part of a cross section orthogonal to a slit in still another embodiment of a die for forming a honeycomb structure of the present invention.
- FIG. 6 is a cross-sectional view showing a part of a cross section orthogonal to a slit in still another embodiment of a die for forming a honeycomb structure of the present invention.
- FIG. 6 is a cross-sectional view showing a part of a cross section orthogonal to a slit in still another embodiment of a die for forming a honeycomb structure of the present invention.
- FIG. 6 is a cross-sectional view showing a part of a cross section orthogonal to a slit in still another embodiment of a die for forming a honeycomb structure of the present invention.
- FIG. 1 is a perspective view schematically showing one embodiment of a die for forming a honeycomb structure of the present invention, as viewed from the first plate-like portion side where slits are formed.
- FIG. 2 is a perspective view schematically showing an embodiment of a die for forming a honeycomb structure of the present invention as seen from the second plate-like portion side where a back hole is formed.
- FIG. 3 is an enlarged plan view showing a part of the surface on the first plate-like portion side of the die for forming a honeycomb structure shown in FIG. FIG.
- FIG. 4A is a schematic view showing an AA ′ cross section of the die for forming a honeycomb structure shown in FIG.
- the honeycomb structure forming die shown in FIG. 4A shows a state in which the opening of the hole in the first bonding surface is disposed inside the opening of the back hole in the second bonding surface.
- the honeycomb structure forming die 1 of the present embodiment includes a second plate-like portion 3 and a first plate-like portion 7 made of a tungsten carbide-based cemented carbide. It is to be prepared.
- the second plate-like portion 3 is formed of at least one selected from the group consisting of iron, steel, aluminum alloy, copper alloy, titanium alloy, and nickel alloy.
- the 2nd plate-shaped part 3 has the 2nd joining surface 6, and the back hole 5 for introduce
- the first plate-like portion 7 has a first joining surface 10, and a slit 9 is formed in the back hole 5 and the slit 9 for forming a forming raw material in communication with the back hole 5.
- the communicating hole 11 is formed on the first joint surface 10 side.
- the slit 9 communicates directly with the hole 11. That is, it can be said that the slit 9 communicates with the back hole 5 through the hole 11.
- the first plate-like portion 7 is disposed on the second plate-like portion 3 such that the first joint surface 10 is in contact with the second joint surface 6.
- the diameter of the opening of the hole in the first bonding surface is different from the diameter of the opening of the back hole in the second bonding surface. Furthermore, the diameter of the opening of the hole in the first bonding surface is smaller than the diameter of the opening of the back hole in the second bonding surface.
- the opening 11 a of the hole 11 in the first bonding surface 10 is disposed inside the opening 5 a of the back hole 5 in the second bonding surface 6.
- the opening 11a of the hole 11 is disposed inside the opening 5a of the back hole 5” means that the back hole 5 having a large opening diameter and the hole 11 having a small opening diameter communicate with each other. This means that the outer periphery (outer edge) of the opening of the hole 5 and the outer periphery (outer edge) of the opening of the hole 11 do not intersect.
- the opening portion 11a of the hole portion 11 corresponds to the opening portion 5a of the back hole 5. It is included in “disposed inside”.
- the thickness of the die for forming a honeycomb structure of the present embodiment is not particularly limited, but is preferably 5 to 100 mm. If it is thinner than 5 mm, the die may be destroyed during molding. If it is thicker than 100 mm, when forming the honeycomb structure, pressure loss is high and it may be difficult to form.
- the second plate-like portion 3 is formed of at least one selected from the group consisting of iron, steel, aluminum alloy, copper alloy, titanium alloy, and nickel alloy.
- the steel material is at least one selected from the group consisting of stainless steel, die steel and high-speed steel.
- steel materials are preferable and stainless steel is still more preferable.
- “at least one selected from the group consisting of iron, steel, aluminum alloy, copper alloy, titanium alloy and nickel alloy” may be referred to as “free-cutting material”.
- a “free-cutting material” is a material (material) that can be easily ground as compared with a tungsten carbide-based cemented carbide.
- the second plate-like portion 3 Since the second plate-like portion 3 is not formed with a slit, the second plate-like portion 3 has less wear problems than the first plate-like portion 7. Since the 2nd plate-shaped part 3 is a product made from a free-cutting material, it is excellent in workability compared with the tungsten carbide base cemented carbide. Moreover, since the free-cutting material is cheaper than the tungsten carbide-based cemented carbide, the manufacturing cost can be reduced.
- stainless steel which is a kind of material of the second plate-like portion 3
- known stainless steel can be used.
- SUS304, SUS303, etc. can be mentioned.
- the size of the second plate-like portion 3 is not particularly limited, and can be set to a desired size according to the application.
- the diameter of the disk is preferably 30 to 500 mm.
- the thickness of the second plate-shaped portion 3 is not particularly limited, and can be appropriately determined according to the use, for example, considering the slit shape, the back hole shape, and the like.
- a back hole 5 for introducing a forming raw material is formed in the second plate-like portion 3.
- the “back hole 5” is a through hole (a hole opened on both surfaces of the second plate-like portion 3) for introducing a forming raw material.
- a honeycomb structure forming raw material is introduced from the back hole 5.
- the shape of the back hole 5 is not particularly limited as long as the introduced forming raw material can be guided to the hole 11 and the slit 9.
- the shape of the back hole in the “cross section orthogonal to the direction in which the forming raw material flows (the thickness direction of the second plate-shaped portion)” is preferably circular.
- the diameter of the opening of the back hole 5 is preferably 0.5 to 5.0 mm, and more preferably 0.8 to 3.0 mm.
- Such a back hole 5 can be formed, for example, by a method such as electrolytic machining (ECM machining), electric discharge machining (EDM machining), laser machining, or machining such as a drill.
- the space of the back hole is preferably a cylindrical shape.
- the diameter (the diameter of the back hole) of the back hole in the “cross section perpendicular to the direction in which the forming raw material flows (the thickness direction of the second plate-like portion)” is a constant value.
- the diameter of the back hole is the same value as the “diameter of the opening of the back hole in the second joint surface”.
- the number of the back holes is not particularly limited, and can be appropriately determined according to the shape of the honeycomb structure to be manufactured.
- the second plate-like portion 3 has a second joint surface 6. As shown in FIG. 4A, the second bonding surface 6 is a surface of the second plate-shaped portion 3 that is bonded (contacted) to the first plate-shaped portion 7.
- the 1st plate-shaped part 7 is comprised from the plate-shaped member made from a tungsten carbide base cemented carbide.
- the width of the slit 9 is very narrow compared to the diameter of the back hole 5. Therefore, when extruding the forming raw material, the pressure in the back hole 5 is increased, stress is concentrated on the slit 9, and problems such as wear and deformation are likely to occur. Therefore, the 1st plate-shaped part 7 is formed with the tungsten carbide base cemented carbide which is a material with high abrasion resistance.
- the “tungsten carbide-based cemented carbide” (cemented carbide) is an alloy obtained by sintering tungsten carbide and a binder.
- the binder is preferably at least one metal selected from the group consisting of cobalt (Co), iron (Fe), nickel (Ni), titanium (Ti), and chromium (Cr).
- Such a tungsten carbide base cemented carbide is particularly excellent in wear resistance and mechanical strength.
- the size of the first plate-like portion 7 is not particularly limited, and can be set to a desired size according to the application. However, when the first plate-like portion 7 is disk-shaped, the diameter of the disk is preferably 30 to 500 mm. When the first plate-like portion 7 and the second plate-like portion 3 are disk-like, the diameter of the first plate-like portion 7 is preferably 90 to 100% of the diameter of the second plate-like member 3. .
- the thickness of the first plate-like portion 7 is preferably 0.6 to 95 mm, more preferably 0.6 to 30 mm, and particularly preferably 1.0 to 20 mm. Further, the thickness of the first plate-like portion 7 is preferably 0.05 to 5 times the thickness of the second plate-like portion 3.
- the first plate-like portion 7 is formed with a slit 9 that communicates with the hole portion 11 and forms the forming raw material.
- the slit is a gap (cut) formed in the first plate-like portion 7.
- the forming raw material introduced from the back hole 5 enters the slit 9 in the honeycomb structure forming die, and further, the forming raw material is extruded from the opening of the slit 9 to form a honeycomb-shaped formed body.
- the region where the slits are formed on the first plate-like portion 7 and the slit formation pattern are not particularly limited and can be appropriately determined according to the intended use.
- a slit formation pattern in a cross section orthogonal to the direction in which the forming raw material is extruded (flowed), polygons such as triangles, quadrangles, pentagons, hexagons, octagons, etc., rounds, these polygons and rounds A pattern formed by combining a plurality of the members is preferred.
- the formation pattern of the slits 9 is a square in a cross section orthogonal to the direction in which the forming raw material is extruded.
- the width of the slit can be appropriately determined depending on the shape of the honeycomb structure to be formed.
- the width of the slit is preferably 0.05 to 1 mm. More preferably, the thickness is 0.06 to 0.5 mm.
- the depth of the slit may be any depth that communicates with the hole. The depth of the slit is preferably 0.5 to 10 mm, for example.
- the first plate-like portion 7 has a first joint surface 10. As shown in FIG. 4A, the first joint surface 10 is a surface of the first plate-like portion 7 that is joined (contacted) to the second plate-like portion 3.
- a “hole 11” is formed in the first plate-like portion 7.
- the “hole 11” is formed so as to communicate with the back hole 5 formed in the second plate-like portion 3 and the slit 9 formed in the first plate-like portion 7.
- the “hole 11” is a recess formed in the “first joint surface 10” of the first plate-like portion 7. That is, it is formed from the first bonding surface 10 side toward the surface opposite to the first bonding surface 10 (the surface of the first plate-like portion 7). As shown in FIG. 4A, the “hole 11” does not reach the surface of the first plate-like portion 7. That is, the “hole 11” communicates with the slit, but the hole 11 itself is not a through hole.
- the “hole 11” has a bottom portion 11 b that is a tip portion (bottom portion) of the hole in the first plate-like portion 7.
- the forming raw material introduced from the back hole 5 formed in the second plate-like portion 3 passes through the “hole 11” and passes through the slit. Enter 9. Then, the forming raw material is extruded from the opening 9a of the slit to form a honeycomb-shaped formed body (honeycomb structure).
- the hole 11 has a depth h (see FIG. 4A) of preferably 0.1 to 90 mm, and more preferably 0.5 to 20 mm.
- the moldability can be improved when the depth h of the hole 11 is in the above range.
- the depth h of the hole is less than 0.1 mm, the strength of the first plate-shaped member may be easily lowered when the forming raw material is extruded.
- the depth h of the hole is more than 90 mm, it is difficult to form the hole by processing the first plate-shaped member when the honeycomb structure forming die of the present embodiment is manufactured.
- the “depth h of the hole portion 11” is a distance from the first joint surface of the first plate-like portion to the bottom portion 11b of the hole portion as shown in FIG. 4A.
- the diameter of the opening of the hole 11 is preferably 0.5 to 5.0 mm, and more preferably 0.8 to 3.0 mm.
- a hole 11 can be formed by methods such as electrolytic machining (ECM machining), electrical discharge machining (EDM machining), laser machining, machining such as drilling, and the like. Among these methods, the electrolytic processing (ECM processing) is preferable because the hole 11 can be efficiently and accurately formed.
- the space of the hole is preferably cylindrical.
- the diameter (the diameter of the hole) in the “cross section perpendicular to the direction in which the forming raw material flows (the thickness direction of the first plate-shaped part)” of the hole is a constant value.
- the diameter of the hole 11 is the same value as the “diameter of the opening of the hole in the first joint surface”.
- the number of holes 11 is preferably the same as the number of back holes.
- the diameter d 1 of the opening 11a of the hole in the first joint surface 10 is the same as that in the second joint surface 6. a size different from the diameter D 1 of the opening 5a of the back holes.
- the diameter d1 of the opening of the hole 11 in the first joint surface is equal to the back hole 5 in the second joint surface. It is formed smaller than the diameter D 1 of the opening of the.
- the opening 11 a of the hole 11 in the first bonding surface 10 is arranged inside the opening 5 a of the back hole 5 in the second bonding surface 6.
- the “opening portion 11 a of the hole in the first bonding surface” is an entrance portion of a recess (hole) that opens to the first bonding surface 10.
- the diameter d 1 of the opening 11a of the hole is preferably formed in the same diameter as the diameter of the bottom portion 11b of the hole.
- the “opening portion 5a of the back hole in the second bonding surface” is an outlet portion (an outlet portion of the forming raw material) on the second bonding surface 6 side that opens to the second bonding surface 6. The ceramic raw material passes through this outlet portion and is simultaneously supplied to the hole.
- the opening 11a of the hole in the first joint surface 10 is disposed inside the opening 5a of the back hole in the second joint surface 6. .
- “stable (smooth) flow of the ceramic raw material from the back hole 5 to the slit 9” is inhibited. Can be prevented. That is, the uneven flow of the molding material in the hole 11 is suppressed, and the molding material is introduced into the slit with a uniform pressure. Thereby, distortion of the honeycomb structure when the honeycomb structure is formed can be prevented. That is, it becomes a die for forming a honeycomb structure capable of forming a honeycomb structure having good formability.
- the “diameter D 1 of the opening 5a of the back hole in the second bonding surface 6” is the diameter of the opening 11a of the hole in the first bonding surface 10. It is preferably 1.01 to 1.50 times d 1 ”.
- molding the molded object (honeycomb structure) of a honeycomb structure can be improved.
- the ratio is smaller than 1.01, when the honeycomb structure forming die is manufactured, when the first plate-like portion and the second plate-like portion are joined, the opening of the hole and the opening of the back hole are formed. The part may shift.
- the honeycomb structure obtained when the honeycomb structure is formed is easily deformed.
- the back hole and the back hole may be connected to each other and a desired molded article may not be formed.
- the shape of the opening part of a hole part and the shape of the opening part of a back hole are not specifically limited, It is preferable that it is the same shape from which a magnitude
- the ceramic honeycomb structure extruded by using the honeycomb structure forming die 1 (1A) of the present embodiment has a ceramic honeycomb structure including porous partition walls that partition and form a plurality of cells extending in the fluid flow direction. Is the body.
- the ceramic raw material used when manufacturing the ceramic honeycomb structure using the honeycomb structure forming die 1 (1A) of the present embodiment is a raw material in which water, a binder, a pore forming agent, and the like are mixed and kneaded with ceramic powder. is there.
- the die for forming a honeycomb structure of the present embodiment is as follows. That is, as shown in FIG. 4B, in one embodiment of the honeycomb structure forming die of the present invention (see FIG. 4A), the opening 5a of the back hole 5 in the second bonding surface 6 is The first joint surface 10 is disposed inside the opening 11 a of the hole 11. In the honeycomb structure forming die of the present embodiment, the opening 5 a of the back hole 5 in the second bonding surface 6 is smaller than the opening 11 a of the hole 11 in the first bonding surface 10.
- the opening 5a of the back hole 5 is disposed inside the opening 11a of the hole 11” means that the back hole 5 having a small opening diameter and the hole 11 having a large opening diameter communicate with each other. This means that the outer periphery (outer edge) of the opening of the hole 5 and the outer periphery (outer edge) of the opening of the hole 11 do not intersect.
- the state where the outer periphery (outer edge) of the opening portion of the back hole 5 is inscribed in the outer periphery (outer edge) of the opening portion of the hole portion 11 is “the opening portion 5 a of the back hole 5 is the opening portion 11 a of the hole portion 11. It is included in “disposed inside”. FIG.
- FIG. 4B shows a “cross section parallel to the thickness direction” of another embodiment of the die for forming a honeycomb structure of the present invention, and the opening of the back hole in the second joint surface is in the first joint surface.
- the honeycomb structure forming die 1 (1B) of the present embodiment has the hole 11 because the opening 5a of the back hole 5 is disposed inside the opening 11a of the hole 11.
- the molding raw material inside becomes a uniform flow and is introduced into the slit with a uniform pressure. Thereby, it is possible to prevent the shape of the honeycomb-shaped formed body from being deformed.
- the diameter d 1 of the opening 11a of the hole in the first bonding surface 10 is “diameter D of the opening 5a of the back hole in the second bonding surface 6”.
- 1 is preferably 1.01 to 1.50 times. Thereby, the moldability at the time of shape
- the ratio is smaller than 1.01, when the honeycomb structure forming die is manufactured, when the first plate-like portion and the second plate-like portion are joined, the opening of the hole and the opening of the back hole are formed. The part may shift. When it is larger than 1.50 times, the hole part and the hole part may be connected to each other to form a desired molded body.
- the shape of the bottom portion 9 b of the slit is a curved shape protruding outward in a cross section perpendicular to the slit 9”. It is.
- the “cross section orthogonal to the slit 9” is orthogonal to the slit 9 and parallel to the depth direction of the slit 9 (the direction from the surface of the first plate-shaped portion to the inside). Means a cross section.
- the bottom portion 9 b of the slit is an end portion of the slit 9 on the “first bonding surface 10 side of the first plate-like portion 7” in a cross section orthogonal to the slit 9.
- the shape of the bottom 9 b of the slit is a V-shape protruding outward in the cross section perpendicular to the slit 9”. Is also a preferred embodiment.
- the shape of the bottom of the slit is a cross-section perpendicular to the slit”
- the flat portion (straight) has the corners cut out linearly (C chamfering).
- the shape ") is also a preferred embodiment.
- the shape of the slit 9 becomes narrower from the opening 9 a toward the bottom 9 b of the slit in the cross section orthogonal to the slit 9.
- the “tapered shape” is also a preferred embodiment. Examples of the shape of the slit include various shapes as described above.
- FIG. 5 is a cross-sectional view showing a part of a cross section perpendicular to the slit 9 of still another embodiment (honeycomb structure forming die 1C) of the honeycomb structure forming die of the present invention.
- FIG. 6 is a cross-sectional view showing a part of a cross section perpendicular to the slit 9 of still another embodiment (honeycomb structure forming die 1D) of the honeycomb structure forming die of the present invention.
- FIG. 7 is a cross-sectional view showing a part of a cross section orthogonal to the slit 9 of still another embodiment (honeycomb structure forming die 1E) of the honeycomb structure forming die of the present invention.
- the shape of the bottom portion 11 b of the hole portion 11 is convex outward in the cross section orthogonal to the surface 7 a of the first plate-like portion 7.
- a curved shape is also a preferred embodiment.
- the die for forming a honeycomb structure of the present invention has a “cross-sectional shape in which the shape of the bottom of the hole is orthogonal to the surface of the first plate-like part”, and “the corner part is outward in a flat shape (straight shape). “A shape formed in a convex curve” is also a preferred embodiment.
- FIG. 8 the honeycomb structure forming die of the present invention, as shown in FIG.
- the shape of the bottom 11 b of the hole 11 as follows is also a preferable aspect. That is, the shape of the bottom part 11b of the hole part 11 is “in the cross section perpendicular to the surface 7a of the first plate-like part 7”.
- the shape ")" is also a preferred embodiment.
- Examples of the shape of the bottom 11b of the hole 11 include various shapes as described above.
- the shape of the bottom 9b of the slit 9 is a flat shape (straight shape) in a cross section perpendicular to the slit 9.
- FIG. 8 is a cross section showing a part of a cross section orthogonal to the surface 7a of the first plate-like portion 7 of still another embodiment (honeycomb structure forming base 1F) of the honeycomb structure forming base of the present invention.
- FIG. 9 is a cross-sectional view showing a part of a cross section orthogonal to the surface 7a of the first plate-like portion 7 in still another embodiment (honeycomb structure forming die 1G) of the honeycomb structure forming die of the present invention.
- honeycomb structure forming die of the present invention it is formed along “the end portion of the slit on the first joint surface side of the first plate-like portion”, communicated with the slit, and the width of the slit. It is preferable to have a “buffer portion” that is a space of a larger width.
- FIG. 10 still another embodiment of the honeycomb structure forming die of the present invention is configured so that “the first joint surface of the first plate-like portion 7 of the slit 9” A buffer portion 21 which is a space communicating with the end portion on the “10 side” is formed.
- the width A of the buffer unit 21 is larger than the width of the slit 9.
- the buffer portion 21 is formed along the end portion of the entire slit 9 on the “first bonding surface 10 side of the first plate-like portion 7”.
- the honeycomb structure forming die 1H has the buffer part 21 so that the forming raw material flowing from the back hole 5 can be easily put into the wide buffer part 21 before flowing into the narrow slit 9. Can be spread. Then, the forming raw material can be flowed into the slit 9 from the buffer portion 21. Thereby, it becomes easy to flow the molding material uniformly through the slit 9. Further, since the honeycomb structure forming die 1H has the buffer portion 21, the pressure loss when the forming raw material is extruded can be reduced.
- the width A of the buffer portion 21 is preferably 0.1 to 4.0 mm, more preferably 0.2 to 3.0 mm, and particularly preferably 0.5 to 2.0 mm. If the width A of the buffer portion 21 is narrower than 0.1 mm, the effect of facilitating the uniform flow of the forming material through the slit 9 may be reduced. If the width A of the buffer portion 21 is wider than 4.0 mm, the base may be easily broken during molding. Further, the depth B of the buffer portion 21 is preferably 0.05 to 5.0 mm, more preferably 0.1 to 4.0 mm, and particularly preferably 0.5 to 2.0 mm. If the depth B of the buffer part 21 is shallower than 0.05 mm, the effect of facilitating the uniform flow of the forming material through the slit 9 may be reduced.
- the depth of the buffer portion 21 is the length of the buffer portion 21 in the “thickness direction of the honeycomb structure forming die 1H”.
- the shape of the buffer portion 21 is rectangular in the cross section perpendicular to the slit 9. That is, the shape of the bottom portion 21 a of the buffer portion 21 is a “flat shape (straight shape)” in a cross section orthogonal to the slit 9.
- FIG. 10 is a cross-sectional view showing a part of a cross section perpendicular to the slit 9 of still another embodiment (honeycomb structure forming die 1H) of the honeycomb structure forming die of the present invention.
- FIG. 11 is a cross-sectional view showing a part of a cross section orthogonal to the slit 9 of still another embodiment (honeycomb structure forming die 1I) of the honeycomb structure forming die of the present invention.
- the buffer portion 21 is formed and the shape of the buffer portion 21 is as follows. That is, in the cross section orthogonal to the slit 9, the shape of the buffer portion 21 is “the shape of the bottom 21 a is“ a flat shape (straight shape) where corners are cut straight (chamfered) ”. It is also a preferable aspect that it is the shape which becomes. Further, a honeycomb structure forming die in which a buffer portion having a “V-shaped” bottom is formed in a cross section perpendicular to the slit is also a preferable aspect.
- FIG. 12 is a cross-sectional view showing a part of a cross section perpendicular to the slit 9 of still another embodiment (honeycomb structure forming die 1J) of the honeycomb structure forming die of the present invention.
- the buffer portion 21 is formed, and the buffer portion 21 is preferably arranged as follows. That is, the buffer portion 21 is formed (arranged) so that the bottom portion 21a of the buffer portion overlaps the bottom portion 11b of the hole portion 11 in the thickness direction of the honeycomb structure forming die 1K.
- FIG. 13 is a cross-sectional view showing a part of a cross section perpendicular to the slit 9 of still another embodiment (honeycomb structure forming die 1K) of the honeycomb structure forming die of the present invention.
- Examples of the shape of the buffer portion 21 include various shapes such as the buffer portion of the honeycomb structure forming die 1H to 1K shown in FIGS.
- the diameter of the opening of the hole is smaller than the diameter of the opening of the back hole, and the opening of the hole has a back hole. It is an example arrange
- the embodiment is also a preferred aspect.
- the slit 9 formed in the die for forming a honeycomb structure of the present invention has two slits having the same shape as the slits 9 of the die for forming a honeycomb structure 1C to 1F shown in FIGS. It may be a combination of two or more.
- the hole formed in the die for forming a honeycomb structure of the present invention has the same shape as the hole 11 of each of the die for forming a honeycomb structure 1F to 1H shown in FIGS. It may be a combination of two or more.
- the buffer portion formed in the honeycomb structure forming die of the present invention has a buffer portion having the same shape as each of the buffer portions 21 of the honeycomb structure forming die 1H to 1K shown in FIGS. It may be a combination of two or more.
- the method for manufacturing the die for forming a honeycomb structure according to the present embodiment is a method for manufacturing the die for forming a honeycomb structure according to the present invention shown in FIGS. 1 to 4A (the die for forming a honeycomb structure 1). It is. It should be noted that the other embodiment of the die for forming a honeycomb structure of the present invention shown in FIG. 4B is manufactured in the same manner except that the relationship between the sizes of the openings of the back hole and the hole is different. Can do.
- a plurality of back holes 5 are formed in a disc-shaped second plate-like member 3 formed of a free-cutting material (step (1)).
- Each condition such as “the diameter of the opening” of the back hole 5 is preferably set as a preferable condition in the embodiment of the honeycomb structure forming die of the present invention.
- ECM processing electrolytic processing
- EDM processing electrical discharge processing
- laser processing drilling, etc.
- ECM processing electrolytic processing
- a hole 11 is formed in one surface (first bonding surface 10) of the first plate-like member 7 formed of a tungsten carbide base cemented carbide (a cemented carbide) (step (2)).
- One surface of the first plate-like member 7 is a surface (first joint surface 10) on the side to be joined with the second plate-like member 3.
- the hole 11 is formed so that the diameter d 1 of the hole 11 is smaller than the diameter D 1 of the back hole 5 (see FIG. 4A).
- the number of the holes 11 is the same as the number of the back holes 5, and the arrangement of the holes 11 is the arrangement of the back holes 5 when the first plate member 7 and the second plate member 3 are joined. To the same position.
- the method of forming the hole 11 is not particularly limited, but for example, a method such as electrolytic machining (ECM machining), electric discharge machining (EDM machining), laser machining, drilling, or other machining can be suitably used. Among these, it is preferable to use electrolytic processing (ECM processing). By using electrolytic processing (ECM processing), a back hole with high dimensional accuracy can be efficiently formed.
- ECM processing electrolytic processing
- step (3) in a state where the second joining surface 6 that is one surface of the second plate-like member 3 and the first joining surface 10 of the first plate-like member 7 are opposed to each other, the first plate The plate-like member 7 and the second plate-like member 3 are laminated, and the first plate-like member 7 and the second plate-like member 3 are joined (step (3)). As a result, the second joint surface 6 of the second plate-like member 3 and the first joint surface 10 of the first plate-like member 7 are joined.
- a bonding material may be disposed between the first plate-like member 7 and the second plate-like member 3. preferable. Then, the first plate-like member 7 and the second plate-like member 3 can be joined in a state where the joining material is disposed between the first plate-like member 7 and the second plate-like member 3. preferable.
- the shape of the bonding material is preferably a film shape, a sheet shape, a plate shape, or the like.
- the material of the bonding material is, for example, a metal or alloy including at least one selected from the group consisting of copper (Cu), silver (Ag), gold (Au), nickel (Ni), and aluminum (Al). Preferably there is. Further, when sandwiched between the first plate-like member 7 and the second plate-like member 3 and pressurized (hot press) while heating, the first plate-like portion 7 and the second plate-like member It is preferable that it penetrates into at least one of the parts 3. By configuring the bonding material in this manner, it is possible to improve the bonding between the first plate-like portion 7 and the second plate-like portion 3.
- the bonding material is, for example, addition of palladium (Pd), silicon (Si), tin (Sn), cobalt (Co), phosphorus (P), manganese (Mn), zinc (Zn), boron (B), etc. It may further contain an agent. What further contains such an additive can lower the bonding temperature and improve the reliability.
- the first plate-like member 7 and the second plate-like member 3 are laminated and joined, the first plate-like member 7 and the second plate-like member 3 are laminated by hot pressing. It is preferable to join by.
- the temperature at which hot pressing is performed is preferably 900 to 1200 ° C, and more preferably 1000 to 1150 ° C. By heating at such a temperature, the 1st plate-shaped member 7 and the 2nd plate-shaped member 3 can be joined favorably, and the strength reduction of the 2nd plate-shaped member 3 can be prevented.
- the time for performing hot pressing is preferably 1 minute to 1 hour, more preferably 10 to 45 minutes. If it is shorter than 1 minute, the first plate-like member 7 and the second plate-like member 3 may not be bonded with a strong bonding strength.
- the pressure at the time of hot pressing can be appropriately determined depending on the shape and size of the first plate-like member 7 and the second plate-like member 3, but is preferably 0.01 to 100 MPa, 1 to 10 MPa is more preferable.
- an apparatus for performing hot pressing for example, “FVHP-R manufactured by Fuji Denpa Kogyo Co., Ltd.” or the like can be used.
- a slit 9 communicating with the hole 11 is formed from the “surface opposite to the first bonding surface” (front side) of the first plate-like portion 7 to form the honeycomb structure forming die 1. (See FIGS. 1 to 4A) (step (4)). Since the slit 9 communicates with the “hole 11 communicating with the back hole 5”, it can be said that the slit 9 also communicates with the back hole 5 through the hole 11.
- a slit 9 communicating with the hole 11 is formed from the “surface opposite to the first bonding surface” (front side) of the first plate-like portion 7 to form the honeycomb structure forming die 1.
- the planar shape (slit formation pattern) of the cell block 13 formed by the slits 9 is a quadrangle.
- Each condition for the slit such as the slit formation pattern is preferably the same as the preferable condition in the embodiment of the honeycomb structure forming die of the present invention.
- a diamond grindstone or the like whose tip (outer periphery) shape is a “convex curve” is used. preferable.
- a diamond grindstone having a V-shaped overall cross-sectional shape it is preferable to use, for example, a diamond grindstone having a V-shaped overall cross-sectional shape.
- the buffer portion 21 formed in the honeycomb structure forming die 1H to 1K shown in FIGS. 10 to 13 is preferably formed by the following method.
- a method of forming the buffer portion 21 from the slit of the first plate member using a wire electric discharge machine is preferable.
- a method of forming a slit from the surface side of the first plate-like member using a wire electric discharge machine and forming a buffer portion that is a wide hole at the tip of the slit is also a preferable method.
- the shape of the buffer portion can be adjusted by the wire diameter, processing conditions, wire trajectory, and the like.
- a back hole (through hole) having a diameter of 2 mm was formed in a plate-like member (second plate-like member) made of stainless steel (SUS303) by electric discharge machining (EDM machining).
- EDM machining electric discharge machining
- the shape of the second plate member was a disc shape having a diameter of 200 mm.
- the thickness of the second plate member was 50 mm.
- the region where the back hole was formed was a circular region centered on the center of the first plate-like member, and the region had a diameter of 150 mm.
- the pitch of the back holes was 5 mm.
- a hole (dent) was formed on one surface (first bonding surface) side of the first plate-like member made of tungsten carbide base cemented carbide by electrolytic processing (ECM processing).
- the diameter of the hole was 1.5 mm, and the depth of the hole was 5 mm. Thereby, the diameter of the opening part of the hole part in a 1st joint surface will be 1.5 mm.
- the shape of the first plate-like member was a disc shape having a diameter of 200 mm. Moreover, the thickness of the 1st plate-shaped member was 10 mm.
- the tungsten carbide based cemented carbide, which is the material of the first plate-like member, was one containing 2% by mass of cobalt in tungsten carbide.
- the first plate-like member and the second plate-like member were laminated with a bonding material disposed between them.
- the first joint surface of the first plate member is the second joint surface of the second plate member. It was made to face.
- the bonding material film-like aluminum (Al) having a thickness of 0.01 mm was used.
- a laminate of the first plate member and the second plate member is hot-pressed for 0.5 hours under the conditions of 0.5 MPa and 900 ° C. 2 plate-like members were joined.
- the “first plate member and the second plate member are laminated with a“ press plate member ”larger than the first plate member and the second plate member. It is preferable to sandwich the “thing (laminate)” and pressurize the laminate with the “press plate member”. Thereby, a laminated body can be pressurized uniformly.
- “Hot pressing” means “pressing while heating”.
- a slit is formed in the first plate-like member.
- a honeycomb structure forming die having a structure as shown in FIGS. 1 to 4A was obtained.
- the slits were formed in a lattice shape so as to communicate with the holes by a diamond grindstone.
- the slit width was 0.5 mm, and the slit pitch was 5 mm.
- the hole was positioned at the intersection of the slits.
- the opening of the hole in the first bonding surface was arranged inside the opening of the back hole in the second bonding surface.
- the following “molding test” was performed on the obtained die for forming a honeycomb structure. The results are shown in Table 1.
- a ceramic raw material As a ceramic raw material, a mixture of alumina, talc and kaolin is used. An organic binder is mixed with the mixture, water is added and kneaded, and a clay (molding raw material) is produced by a vacuum kneader. The obtained clay is molded by an extruder equipped with a die for forming a honeycomb structure to obtain a cylindrical honeycomb molded body. Next, the obtained honeycomb formed body is dried using a dielectric dryer, and then fired using a firing furnace to obtain a honeycomb structure. 100 honeycomb structures are produced by the above method. The obtained honeycomb structure is visually observed for the presence or absence of cell “distortion”. The yield of non-defective products is calculated by taking the products without “distortion” as non-defective products and the products with “distortion” as defective products.
- Example 2 A die for forming a honeycomb structure was manufactured in the same manner as in Example 1 except that the diameter of the back hole of the second plate-shaped portion was smaller than the diameter of the hole of the first plate-shaped portion.
- the opening part of the back hole in the 2nd joining surface was arrange
- the diameter of the opening of the hole in the first joint surface was 2.0 mm.
- the depth of the hole part was 5 mm.
- the diameter of the opening part of the back hole in the 2nd joining surface was 1.5 mm.
- the above “molding test” was performed on the obtained die for forming a honeycomb structure. The results are shown in Table 1.
- Example 1 A die for forming a honeycomb structure was manufactured in the same manner as in Example 1 except that the diameter of the back hole of the second plate member and the diameter of the hole of the first plate member were the same. .
- “the outer periphery of the opening portion of the hole in the first bonding surface” and “the outer periphery of the opening portion of the back hole in the second bonding surface” intersect.
- the first plate-like member and the second plate-like member were joined. That is, the first plate-like member and the second plate-like member are joined in a state where the back hole and the hole are displaced.
- the die for forming a honeycomb structure of the present invention can be used when a honeycomb structure used for a catalyst carrier, a filter for collecting fine particles in exhaust gas, or the like is produced.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
本発明のハニカム構造体成形用口金の一の実施形態について説明する。図1は、本発明のハニカム構造体成形用口金の一の実施形態を模式的に示し、スリットが形成された第1の板状部側から見た斜視図である。図2は、本発明のハニカム構造体成形用口金の一の実施形態を模式的に示し、裏孔が形成された第2の板状部側から見た斜視図である。図3は、図1に示すハニカム構造体成形用口金の、第1の板状部側の表面の一部を示す拡大平面図である。図4Aは、図3に示すハニカム構造体成形用口金のA-A’断面を示す模式図である。図4Aに示されるハニカム構造体成形用口金は、第1の接合面における穴部の開口部が、第2の接合面における裏孔の開口部の内側に配置されている状態を示している。
第2の板状部3は、鉄、鋼材、アルミ合金、銅合金、チタン合金及びニッケル合金からなる群から選択される少なくとも一種により形成されたものである。鋼材とは、ステンレス鋼、ダイス鋼及びハイス鋼からなる群から選択される少なくとも一種のことである。第2の板状部3の材質としては、これらの中でも、鋼材が好ましく、ステンレス鋼が更に好ましい。尚、本明細書において、「鉄、鋼材、アルミ合金、銅合金、チタン合金及びニッケル合金からなる群から選択される少なくとも一種」のことを「快削材」と称することがある。「快削材」は、炭化タングステン基超硬合金と比較して、容易に研削加工することができる材質(材料)である。第2の板状部3は、スリットが形成されていないため、第1の板状部7に比べて、摩耗の問題が少ない。第2の板状部3は、快削材製であるため、炭化タングステン基超硬合金に比べて、加工性に優れたものである。また、炭化タングステン基超硬合金より、快削材のほうが安価であるため、製造コストを低下させることが可能である。
上記第2の板状部3には、成形原料を導入するための裏孔5が形成されている。「裏孔5」は、成形原料を導入するための貫通孔(第2の板状部3の両面に開口する孔)である。このハニカム構造体成形用口金1を用いてハニカム構造体を成形する場合に、裏孔5からハニカム構造体の成形原料が導入される。
第2の板状部3は、第2の接合面6を有している。第2の接合面6は、図4Aに示されるように、第2の板状部3の、第1の板状部7に接合されている(接している)面である。
第1の板状部7は、炭化タングステン基超硬合金製の板状部材から構成される。裏孔5の直径に比べて、スリット9の幅が非常に狭く形成されている。そのため、成形原料を押出成形する際に、裏孔5内の圧力が高くなって、スリット9に応力が集中し、摩耗したり変形したりする等の不具合が生じやすい。そのため、第1の板状部7は、耐摩耗性の高い材料である炭化タングステン基超硬合金によって形成されている。
第1の板状部7には、穴部11に連通し、成形原料を成形するためのスリット9が形成される。スリットは、第1の板状部7に形成された隙間(切れ込み)である。裏孔5から導入された成形原料が、ハニカム構造体成形用口金内で上記スリット9に入り、さらに、スリット9の開口部から成形原料が押し出されて、ハニカム形状の成形体が形成される。
第1の板状部7は、第1の接合面10を有している。第1の接合面10は、図4Aに示されるように、第1の板状部7の、第2の板状部3に接合されている(接している)面である。
さらに、第1の板状部7には、「穴部11」が形成される。この「穴部11」は、第2の板状部3に形成される裏孔5、及び、第1の板状部7に形成されるスリット9に連通するように形成される。また、この「穴部11」は、第1の板状部7の「第1の接合面10」に形成された窪みである。すなわち、第1の接合面10側から、第1の接合面10に対して反対側の面(第1の板状部7の表面)に向けて形成される。尚、図4Aに示されるように、「穴部11」は、上記第1の板状部7の表面までは到達していない。すなわち、「穴部11」は、スリットには連通しているが、穴部11自体は貫通孔にはなっていない。従って、「穴部11」は、第1の板状部7内に、穴の先端部分(底の部分)である底部11bを有している。このような「穴部11」が形成されることにより、第2の板状部3に形成された裏孔5から導入された成形原料が、この「穴部11」を通過して、上記スリット9に入る。そして、スリットの開口部9aから成形原料が押し出され、ハニカム形状の成形体(ハニカム構造体)が形成される。
図4Aに示されるように、本実施形態のハニカム構造体成形用口金1(1A)は、第1の接合面10における穴部の開口部11aの直径d1が、第2の接合面6における裏孔の開口部5aの直径D1とは異なる大きさである。更に、本実施形態のハニカム構造体成形用口金は、図4Aに示されるように、第1の接合面における穴部11の開口部の直径d1は、第2の接合面における上記裏孔5の開口部の直径D1よりも小さく形成されている。そして、第1の接合面10における穴部11の開口部11aが、第2の接合面6における裏孔5の開口部5aの内側に配置されている。
次に、本発明のハニカム構造体成形用口金の他の実施形態について説明する。本実施形態のハニカム構造体成形用口金は、以下のとおりである。すなわち、図4Bに示されるように、上記本発明のハニカム構造体成形用口金の一の実施形態(図4Aを参照)において、第2の接合面6における裏孔5の開口部5aは、第1の接合面10における穴部11の開口部11aの内側に配置されている。本実施形態のハニカム構造体成形用口金においては、第2の接合面6における裏孔5の開口部5aが、第1の接合面10における穴部11の開口部11aより小さい。「裏孔5の開口部5aが、穴部11の開口部11aの内側に配置されている」とは、開口径の小さな裏孔5と開口径の大きな穴部11とが連通するとともに、裏孔5の開口部の外周(外縁)と穴部11の開口部の外周(外縁)とが、交差していない状態を意味する。尚、裏孔5の開口部の外周(外縁)が、穴部11の開口部の外周(外縁)に内接する状態は、「裏孔5の開口部5aが、穴部11の開口部11aの内側に配置されている」に含まれる。図4Bは、本発明のハニカム構造体成形用口金の他の実施形態の「厚さ方向に平行な断面」を示し、第2の接合面における裏孔の開口部が、第1の接合面における穴部の開口部の内側に配置されている状態を示す模式図である。
次に、本発明のハニカム構造体成形用口金の製造方法の一の実施形態について説明する。本実施形態のハニカム構造体成形用口金の製造方法は、図1~図4Aに示される本発明のハニカム構造体成形用口金の一の実施形態(ハニカム構造体成形用口金1)を製造する方法である。尚、図4Bに示される本発明のハニカム構造体成形用口金の他の実施形態についても、裏孔と穴部のそれぞれの開口部の大きさの関係が異なるだけで、同様にして製造することができる。
まず、ステンレス鋼(SUS303)製の板状部材(第2の板状部材)に、直径2mmの裏孔(貫通孔)を放電加工(EDM加工)によって形成した。これにより、「第2の接合面における裏孔の開口部の直径」は、2mmとなる。第2の板状部材の形状は、直径200mmの円板形状とした。また、第2の板状部材の厚さは、50mmであった。裏孔を形成した領域(裏孔形成領域)は、第1の板状部材の中心を中心とした、円形状の領域であり、その直径が150mmの領域とした。裏孔のピッチは5mmとした。
セラミック原料として、アルミナ、タルク及びカオリンの混合物を用いる。当該混合物に、有機バインダを混合し、水を添加して混練し、真空土練機により坏土(成形原料)を作製する。得られた坏土を、ハニカム構造体成形用口金を装着した押出成形機により成形して、円筒状のハニカム成形体を得る。次に、得られたハニカム成形体を、誘電乾燥機を用いて乾燥させ、その後、焼成炉を用いて焼成して、ハニカム構造体を得る。上記方法によりハニカム構造体を100個作製する。得られたハニカム構造体について、セルの「歪み」の有無を目視により観察する。「歪み」のないものを良品とし、「歪み」のあるものを不良品として、良品の歩留まりを算出する。
第2の板状部の裏孔の直径を、第1の板状部の穴部の直径より小さく形成した以外は、実施例1と同様にしてハニカム構造体成形用口金を作製した。尚、第2の接合面における裏孔の開口部が、第1の接合面における穴部の開口部の内側に配設されるようにした。第1の接合面における穴部の開口部の直径を2.0mmとした。また、穴部の深さを5mmとした。また、第2の接合面における裏孔の開口部の直径を1.5mmとした。得られたハニカム構造体成形用口金について、上記「成形試験」を行った。結果を表1に示す。
第2の板状部材の裏孔の直径と、第1の板状部材の穴部の直径とを同じ大きさにした以外は、実施例1と同様にしてハニカム構造体成形用口金を作製した。第1の接合面における穴部の開口部の直径、及び、第2の接合面における裏孔の開口部の直径を、それぞれ2.0mmとした。得られたハニカム構造体成形用口金においては、「第1の接合面における穴部の開口部の外周」と、「第2の接合面における裏孔の開口部の外周」とが、交差するように、第1の板状部材と第2の板状部材とが接合されていた。つまり、裏孔と穴部とがずれた状態で第1の板状部材と第2の板状部材とが接合されていた。
Claims (7)
- 第2の接合面を有し、成形原料を導入するための裏孔が形成された第2の板状部と、
第1の接合面を有し、前記裏孔に連通し成形原料を成形するためのスリットが形成されるとともに、前記裏孔及び前記スリットに連通する穴部が前記第1の接合面側に形成される、炭化タングステン基超硬合金製の第1の板状部とを備え、
前記第2の板状部が、鉄、鋼材、アルミ合金、銅合金、チタン合金及びニッケル合金からなる群から選択される少なくとも一種により形成されたものであり、
前記第1の板状部が、前記第1の接合面が前記第2の接合面に接するようにして前記第2の板状部に配設され、
前記第1の接合面における前記穴部の開口部の直径が、前記第2の接合面における前記裏孔の開口部の直径とは異なる大きさであり、
前記第1の接合面における前記穴部の開口部が、前記第2の接合面における前記裏孔の開口部の内側に配置されているか、または、前記第2の接合面における前記裏孔の開口部が、前記第1の接合面における前記穴部の開口部の内側に配置されているハニカム構造体成形用口金。 - 前記第1の接合面における前記穴部の開口部の直径が、前記第2の接合面における前記裏孔の開口部の直径よりも大きく、前記第1の接合面における前記穴部の開口部の直径が、前記第2の接合面における前記裏孔の開口部の直径の1.01~1.50倍である請求項1に記載のハニカム構造体成形用口金。
- 前記第2の接合面における前記裏孔の開口部の直径が、前記第1の接合面における前記穴部の開口部の直径よりも大きく、前記第2の接合面における前記裏孔の開口部の直径が、前記第1の接合面における前記穴部の開口部の直径の1.01~1.50倍である請求項1に記載のハニカム構造体成形用口金。
- 前記穴部の深さが、0.1~90mmである請求項1~3のいずれかに記載のハニカム構造体成形用口金。
- 前記穴部の先端部分である底部の形状が、前記第1の板状部の表面に直交する断面において、平らな形状、平らな形状において角部が直線状に切り取られた形状、又は外側に凸の曲線状である請求項1~4のいずれかに記載のハニカム構造体成形用口金。
- 前記第1の板状部の前記第1の接合面側の、前記スリットの端部に沿って形成されるとともに、前記スリットに連通し、前記スリットの幅よりも大きな幅の空間であるバッファ部を有する請求項1~5のいずれかに記載のハニカム構造体成形用口金。
- 鉄、鋼材、アルミ合金、銅合金、チタン合金及びニッケル合金からなる群から選択される少なくとも一種により形成された第2の板状部材に、複数の裏孔を形成し、
炭化タングステン基超硬合金により形成された第1の板状部材の一方の面である第1の接合面に、前記第2の板状部材に接合したときに前記裏孔に連通するとともに前記裏孔の直径とは異なる直径の穴である複数の穴部を形成し、
前記裏孔が形成された第2の板状部材の一方の面である第2の接合面と、前記穴部が形成された第1の板状部材の前記第1の接合面とを対向させた状態で、前記第1の板状部材と前記第2の板状部材とを積層して、前記第1の板状部材と前記第2の板状部材とを接合し、
前記第1の板状部材の表面側から、穴部に連通するスリットを形成してハニカム構造体成形用口金を作製するハニカム構造体成形用口金の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380029390.9A CN104364062A (zh) | 2012-06-04 | 2013-06-03 | 蜂窝结构体成形用模头及其制造方法 |
EP13800129.2A EP2857163B1 (en) | 2012-06-04 | 2013-06-03 | Spinneret for molding honeycomb structure and manufacturing method therefor |
JP2014519992A JP6110851B2 (ja) | 2012-06-04 | 2013-06-03 | ハニカム構造体成形用口金及びその製造方法 |
MX2014014749A MX357751B (es) | 2012-06-04 | 2013-06-03 | Matriz para formar estructura de panal y metodo para su fabricacion. |
US14/556,516 US20150086670A1 (en) | 2012-06-04 | 2014-12-01 | Die for forming honeycomb structure and manufacturing method therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-126854 | 2012-06-04 | ||
JP2012126854 | 2012-06-04 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/556,516 Continuation US20150086670A1 (en) | 2012-06-04 | 2014-12-01 | Die for forming honeycomb structure and manufacturing method therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013183612A1 true WO2013183612A1 (ja) | 2013-12-12 |
Family
ID=49712003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/065417 WO2013183612A1 (ja) | 2012-06-04 | 2013-06-03 | ハニカム構造体成形用口金及びその製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150086670A1 (ja) |
EP (1) | EP2857163B1 (ja) |
JP (1) | JP6110851B2 (ja) |
CN (1) | CN104364062A (ja) |
MX (1) | MX357751B (ja) |
WO (1) | WO2013183612A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11220021B2 (en) | 2016-08-03 | 2022-01-11 | Corning Incorporated | Apparatus and methods of ceramic pre-cursor batch rheology control |
US11752679B2 (en) * | 2018-05-31 | 2023-09-12 | Corning Incorporated | Honeycomb extrusion dies and forming methods |
EP3908418A2 (en) * | 2019-01-11 | 2021-11-17 | Corning Incorporated | System for manufacturing of honeycomb extrusion dies and manufacturing methods thereof |
CN109847649A (zh) * | 2019-01-18 | 2019-06-07 | 北京工商大学 | 一种环模制粒机的环模机构 |
US11780115B2 (en) * | 2019-11-27 | 2023-10-10 | Corning Incorporated | Multi-piece layered honeycomb extrusion dies and methods of making same |
EP4347206A1 (en) * | 2021-05-27 | 2024-04-10 | Corning Incorporated | Honeycomb extrusion dies and methods of using and making same |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5638208A (en) * | 1979-09-05 | 1981-04-13 | Nippon Soken | Die for molding honeycomb |
JPS60222203A (ja) * | 1984-04-20 | 1985-11-06 | 田中貴金属工業株式会社 | 押出成形ノズル |
JPS60222204A (ja) * | 1984-04-20 | 1985-11-06 | 田中貴金属工業株式会社 | 押出成形ノズル |
JPS62142607A (ja) * | 1985-12-18 | 1987-06-26 | 日本碍子株式会社 | 押出ダイスおよびその製造方法 |
JPS63118228A (ja) * | 1987-10-27 | 1988-05-23 | Asahi Glass Co Ltd | ハニカム押出成型用ダイの製造法 |
JPH0584726A (ja) * | 1991-09-27 | 1993-04-06 | Ngk Insulators Ltd | ハニカム構造体用押出型 |
JPH0622806B2 (ja) | 1986-08-14 | 1994-03-30 | 日本碍子株式会社 | ハニカム成型用ダイスおよびその製造方法 |
JPH0952116A (ja) * | 1995-08-10 | 1997-02-25 | Denso Corp | ハニカム構造体押出ダイス |
JP2006051682A (ja) | 2004-08-11 | 2006-02-23 | Ngk Insulators Ltd | ハニカム構造体成形用口金及びその製造方法 |
WO2009119422A1 (ja) * | 2008-03-28 | 2009-10-01 | 日立金属株式会社 | セラミックハニカム構造体成形用金型 |
JP2010076133A (ja) * | 2008-09-24 | 2010-04-08 | Ngk Insulators Ltd | ハニカム構造体成形用口金 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6051405B2 (ja) * | 1982-06-12 | 1985-11-13 | 株式会社日本自動車部品総合研究所 | ハニカム構造体押出成形用ダイスの製造方法 |
US4902216A (en) * | 1987-09-08 | 1990-02-20 | Corning Incorporated | Extrusion die for protrusion and/or high cell density ceramic honeycomb structures |
JP3832515B2 (ja) * | 1995-11-21 | 2006-10-11 | 株式会社デンソー | ハニカム構造体押出方法 |
US5702659A (en) * | 1995-11-30 | 1997-12-30 | Corning Incorporated | Honeycomb extrusion die and methods |
JPH09300326A (ja) * | 1996-05-16 | 1997-11-25 | Denso Corp | ハニカム成形用ダイス及びその製造方法 |
US6448530B1 (en) * | 1998-05-11 | 2002-09-10 | Denso Corporation | Metal mold for molding a honeycomb structure and method of producing the same |
US6413072B1 (en) * | 1999-12-17 | 2002-07-02 | Corning Incorporated | Extrusion die and methods of forming |
CN101484287A (zh) * | 2006-12-26 | 2009-07-15 | 日本碍子株式会社 | 蜂窝结构体形成用模具 |
JP5361224B2 (ja) * | 2008-03-17 | 2013-12-04 | 日本碍子株式会社 | ハニカム構造体成形用口金、及びその製造方法 |
JP5345487B2 (ja) * | 2008-09-24 | 2013-11-20 | 日本碍子株式会社 | 接合体及びハニカム構造体成形用口金 |
JP5513865B2 (ja) * | 2009-12-09 | 2014-06-04 | 日本碍子株式会社 | 超硬合金接合体及びその製造方法 |
EP2857164B1 (en) * | 2012-06-04 | 2019-03-20 | NGK Insulators, Ltd. | Spinneret for molding honeycomb structure and manufacturing method therefor |
-
2013
- 2013-06-03 EP EP13800129.2A patent/EP2857163B1/en active Active
- 2013-06-03 CN CN201380029390.9A patent/CN104364062A/zh active Pending
- 2013-06-03 JP JP2014519992A patent/JP6110851B2/ja active Active
- 2013-06-03 MX MX2014014749A patent/MX357751B/es active IP Right Grant
- 2013-06-03 WO PCT/JP2013/065417 patent/WO2013183612A1/ja active Application Filing
-
2014
- 2014-12-01 US US14/556,516 patent/US20150086670A1/en not_active Abandoned
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5638208A (en) * | 1979-09-05 | 1981-04-13 | Nippon Soken | Die for molding honeycomb |
JPS60222203A (ja) * | 1984-04-20 | 1985-11-06 | 田中貴金属工業株式会社 | 押出成形ノズル |
JPS60222204A (ja) * | 1984-04-20 | 1985-11-06 | 田中貴金属工業株式会社 | 押出成形ノズル |
JPS62142607A (ja) * | 1985-12-18 | 1987-06-26 | 日本碍子株式会社 | 押出ダイスおよびその製造方法 |
JPH0622806B2 (ja) | 1986-08-14 | 1994-03-30 | 日本碍子株式会社 | ハニカム成型用ダイスおよびその製造方法 |
JPS63118228A (ja) * | 1987-10-27 | 1988-05-23 | Asahi Glass Co Ltd | ハニカム押出成型用ダイの製造法 |
JPH0584726A (ja) * | 1991-09-27 | 1993-04-06 | Ngk Insulators Ltd | ハニカム構造体用押出型 |
JPH0952116A (ja) * | 1995-08-10 | 1997-02-25 | Denso Corp | ハニカム構造体押出ダイス |
JP2006051682A (ja) | 2004-08-11 | 2006-02-23 | Ngk Insulators Ltd | ハニカム構造体成形用口金及びその製造方法 |
WO2009119422A1 (ja) * | 2008-03-28 | 2009-10-01 | 日立金属株式会社 | セラミックハニカム構造体成形用金型 |
JP2010076133A (ja) * | 2008-09-24 | 2010-04-08 | Ngk Insulators Ltd | ハニカム構造体成形用口金 |
Also Published As
Publication number | Publication date |
---|---|
CN104364062A (zh) | 2015-02-18 |
MX357751B (es) | 2018-07-23 |
EP2857163A4 (en) | 2016-01-06 |
US20150086670A1 (en) | 2015-03-26 |
EP2857163B1 (en) | 2019-08-21 |
JP6110851B2 (ja) | 2017-04-05 |
JPWO2013183612A1 (ja) | 2016-02-01 |
EP2857163A1 (en) | 2015-04-08 |
MX2014014749A (es) | 2015-05-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6110851B2 (ja) | ハニカム構造体成形用口金及びその製造方法 | |
JP6046712B2 (ja) | ハニカム構造体成形用口金及びその製造方法 | |
JP5281899B2 (ja) | ハニカム構造体成形用口金 | |
EP2105272B1 (en) | Honeycomb structure-forming die and method for manufacturing the same | |
EP1500479A1 (en) | Honeycomb forming die and jig for honeycomb forming die using the same | |
JP2003300166A (ja) | 多層構造ブレード及びその製造方法 | |
WO2006098433A9 (ja) | ハニカム構造体成形用口金の製造方法及びハニカム構造体成形用口金 | |
JP5379460B2 (ja) | ハニカム構造体成形用口金及びハニカム構造体成形用口金の製造方法 | |
EP2221156B1 (en) | Die for forming honeycomb structure | |
JP5140715B2 (ja) | 超砥粒ホイールならびに成形体およびその加工方法 | |
EP1502720B1 (en) | Honeycomb forming die | |
JP5261100B2 (ja) | ハニカム構造体成形用口金 | |
JP5313851B2 (ja) | ハニカム構造体成形用口金 | |
JP2002210665A (ja) | 極薄切断ブレード | |
JP2013220487A (ja) | 電鋳薄刃ホイールおよびそれを用いた加工方法ならびに成形体 | |
CN107538359B (zh) | 混粉砂轮及其制备方法 | |
JP4156749B2 (ja) | 切削用チップの製造方法 | |
JP2018024218A (ja) | ハニカム構造体成形用口金 | |
JP2020066087A5 (ja) | ||
JP2004249404A (ja) | 切削工具 | |
JPH08243822A (ja) | 切削工具用素材及び切削工具用素材の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13800129 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2014519992 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2014/014749 Country of ref document: MX |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2013800129 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: IDP00201408296 Country of ref document: ID |