摘要:
An extrusion-molding machine includes a screw, a die and a high-hardness coat layer. The screw has a blade portion to extrude a molding material. The screw is disposed in a tightly-closed space which is maintained in a reduced-pressure atmosphere. The die molds an extruded molding material. The high-hardness coat layer is provided at least on the blade portion.
摘要:
An extrusion-molding machine according to the present invention comprises: a screw having a blade portion for extruding a molding material, the screw disposed in a tightly-closed space; and a die for molding an extruded molding material, wherein the space is maintained in a reduced-pressure atmosphere, and a high-hardness coat layer is formed at least on the blade portion.
摘要:
A method for manufacturing a honeycomb structure includes extrusion-molding honeycomb molded bodies. The honeycomb molded bodies are fired to form honeycomb fired bodies. A molding frame optionally having a vent portion with air permeability is provided. The honeycomb fired bodies are fixed in the molding frame. A member having an other vent portion with air permeability is optionally disposed on an inner face side of the molding frame. A gap between the honeycomb fired bodies and a gap between the molding frame and the honeycomb fired bodies are filled with a sealing material paste. The sealing material paste includes inorganic particles and/or inorganic fibers. The sealing material paste is dried to solidify the sealing material paste and to form an adhesive layer and a coat layer. The sealing material paste is in contact with at least a part of the vent portion during the drying.
摘要:
A honeycomb structure includes a ceramic block including at least one honeycomb fired body. The at least one honeycomb fired body has cell walls to define cells and a peripheral wall constituting a periphery of the at least one honeycomb fired body. The cells include peripheral cells in contact with the peripheral wall of the at least one honeycomb fired body constituting a periphery of the ceramic block and basic cells arranged at an inner side of the peripheral cells. The peripheral cells include deformed cells each having a different shape from the basic cells in a cross section perpendicular to a longitudinal direction of the at least one honeycomb fired body. Each of the deformed cells is capable of receiving therein a circle of about 0.9 mm in diameter in the cross section perpendicular to the longitudinal direction.
摘要:
A molded body treating apparatus includes a support, at least one flat plate and a first movement mechanism. The support is configured to support a honeycomb molded body which has a first end portion and a second end portion in a longitudinal direction of the honeycomb molded body and which includes a plurality of cells each extending along the longitudinal direction from a first end at the first end portion to a second end at the second end portion. Either the first end or the second end of each of the plurality of cells is sealed with a plug material paste. The first movement mechanism is configured to move the at least one flat plate along the longitudinal direction to press the either one of the first and second end portions.
摘要:
A wet mixing apparatus includes a disc and a casing. The disc has a circular plate-shaped structure, is equipped with a vertically placed rotary shaft member as a central axis and has a plurality of agitation blades provided on a side face of the disc. The casing is provided with a raw material feeding port and a mixture discharging port. The raw material feeding port is disposed above the disc and the mixture discharging port is disposed below the disc.
摘要:
A molded body cutting apparatus according to the present invention comprising a first conveyer member that conveys an extrusion-molded pillar-shaped ceramic molded body a cutting member that moves in a direction parallel to a movement direction of the above mentioned first conveyer member while moving also in a vertical direction, and cuts the above mentioned ceramic molded body to a predetermined length by passing through the interior of the above mentioned ceramic molded body and a second conveyer member that conveys a cut ceramic molded body cut to a predetermined length by the above mentioned cutting member, wherein a conveyance speed of the above mentioned first conveyer member and a movement speed of the above mentioned cutting member in the above mentioned parallel direction are almost the same, before the above mentioned ceramic molded body is cut, and each of the conveyance speed of the above mentioned first conveyer member, the movement speed of the above mentioned cutting member in the above mentioned parallel direction, and a conveyance speed of the above mentioned second conveyer member becomes faster toward the latter, after the above mentioned ceramic molded body is cut.
摘要:
A honeycomb structure includes a ceramic block including at least one honeycomb fired body. The at least one honeycomb fired body has cell walls and a peripheral wall. The peripheral wall is formed around the at least one honeycomb fired body. The peripheral wall of the at least one honeycomb fired body, which forms a periphery of the ceramic block, is a stepped peripheral wall provided with a level difference. The level difference includes a projected portion and a recessed portion in a cross section perpendicular to a longitudinal direction of the at least one honeycomb fired body. At least one of the projected portion and the recessed portion is formed by at least one of a curve line and a straight line in the cross section perpendicular to the longitudinal direction of the at least one honeycomb fired body by being subjected to chamfering.
摘要:
A honeycomb structure includes a honeycomb block including at least one honeycomb fired body. The at least one honeycomb fired body has cell walls extending along a longitudinal direction of the at least one honeycomb fired body to define cells. The cells include peripheral cells in contact with peripheral walls of the at least one honeycomb fired body and basic cells positioned to be surrounded by the peripheral cells. The peripheral cells include an irregular cell having a cell cross-sectional area larger than a cell cross-sectional area of one of the basic cells.
摘要:
A drying jig circulating apparatus includes a drying jig assembling apparatus for assembling a drying jig on a movable table, a drying apparatus for drying a ceramic molded body held by the drying jig, and a drying jig disassembling apparatus for disassembling the drying jig on a movable table, and a drying jig circulating conveyor for transporting the drying jig from the disassembling apparatus to the assembling apparatus. The drying jig is configured by two or more separate jigs with a fixing member that integrates the separate jigs, or formed by one openable jig with a fixing member for maintaining a closed state. The drying jig assembling apparatus further includes a molded body mounting mechanism, a ceramic molded body holding mechanism, and a jig delivering mechanism. The drying jig disassembling apparatus further includes a jig receiving mechanism, a jig releasing mechanism, and a molded body taking-out mechanism.