Abstract: 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.

Abstract: 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.

Abstract: 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 mentio

Abstract: A method for manufacturing a honeycomb structured body including molding ceramic raw material to form a pillar-shaped honeycomb molded body having a multiplicity of cells disposed in parallel with one another in the longitudinal direction with a cell wall therebetween, and filling in either one of the end portions of each of the cells with a plug material paste, and firing the honeycomb molded body to manufacture a honeycomb structured body comprising a honeycomb fired body, wherein after having filled in either one of the end portions of each of the cells of the honeycomb molded body with the plug material paste, a plug material paste drying process to dry the plug material paste is conducted by blowing hot air to an end face of the honeycomb molded body using a hot air drying apparatus.

Abstract: A method for inspecting a honeycomb fired body includes transporting the honeycomb fired body along a transportation line, and inspecting the honeycomb fired body for a crack during the transporting step.

Abstract: A method for inspecting a honeycomb fired body includes transporting the honeycomb fired body along a transportation line, and inspecting the honeycomb fired body for a crack during the transporting step.

Abstract: A method for manufacturing a honeycomb structured body including molding ceramic raw material to form a pillar-shaped honeycomb molded body having a multiplicity of cells disposed in parallel with one another in the longitudinal direction with a cell wall therebetween, and filling in either one of the end portions of each of the cells with a plug material paste, and firing the honeycomb molded body to manufacture a honeycomb structured body comprising a honeycomb fired body, wherein after having filled in either one of the end portions of each of the cells of the honeycomb molded body with the plug material paste, a plug material paste drying process to dry the plug material paste is conducted by blowing hot air to an end face of the honeycomb molded body using a hot air drying apparatus.

Abstract: 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.

Abstract: 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 mentio

Abstract: A method for manufacturing a honeycomb structured body according to the present invention comprises manufacturing a pillar-shaped honeycomb molded body having a large number of cells longitudinally placed in parallel with one another with a cell wall therebetween; forming a honeycomb fired body by degreasing and firing the honeycomb molded body; and binding a plurality of the honeycomb fired bodies by interposing a sealing material layer, and further comprising: drawing information on a side face of the honeycomb molded body and/or the honeycomb fired body, prior to said binding, said information drawn in form of at least one of a graphic, a symbol, a character, a barcode and a two-dimensional code.

Abstract: A reverse cleaning regeneration type exhaust emission control device includes two exhaust emission routes communicated with an inlet port of an exhaust emission path. The device includes first path A having a filter A1, a valve A2 and a nozzle A3 and a second path B having a filter B1, a valve B2 and a nozzle B3, and a third path C arranged at an upstream side of the filters A1 and B1 separately from the exhaust emission path extending from the inlet port of the exhaust emission and having a filter C1, a valve C2 and a nozzle C3. The reverse cleanings of the filters A1 and B1 are alternately carried out during the working of the device.