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公开(公告)号：US11110628B2
公开(公告)日：2021-09-07
申请号：US16747828
申请日：2020-01-21
申请人： NGK INSULATORS, LTD.
发明人： Kensuke Okumura , Hirotada Nakamura
摘要： A method for producing a honeycomb structure including producing an unfired pillar shaped honeycomb body; placing the unfired pillar shaped honeycomb body on a receiving table such that the unfired pillar shaped honeycomb body stands thereon; conveying the unfired pillar shaped honeycomb body placed on the receiving table; drying the unfired pillar shaped honeycomb body after the conveying step, or drying the unfired pillar shaped honeycomb body during the conveying to obtain a honeycomb dried body; and firing the honeycomb dried body to obtain a honeycomb structure. The receiving table includes at least one protrusion. In the honeycomb formed body conveying step, the unfired pillar shaped honeycomb body is conveyed while supporting it by inserting the at least one protrusion of the receiving table into a bottom surface of the unfired pillar shaped honeycomb body placed on the receiving table.
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2.发明授权公开(公告)号：US10252442B2
公开(公告)日：2019-04-09
申请号：US15080873
申请日：2016-03-25
申请人： NGK INSULATORS, LTD.
IPC分类号： B28B17/02 , B28C7/02 , B28C7/04 , B28B17/00 , C04B35/626 , C04B38/00 , B28B3/20 , B28C9/00 , B28C3/00 , G01B11/24
摘要： A manufacturing method includes: a dry mixing step of dry mixing a raw material by batch processing; a wet mixing step of adding liquid to a dry mixture obtained at the dry mixing step, the liquid including at least one type of water, surfactant, lubricant and plasticizer, while wet mixing; a kneading step of kneading a wet mixture obtained at the wet mixing step; and a forming step of extruding a kneaded mixture (forming raw material) obtained at the kneading step to make a ceramic formed body. In the kneading step, the liquid is further added during kneading of the wet mixture.
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公开(公告)号：US20180283784A1
公开(公告)日：2018-10-04
申请号：US15921885
申请日：2018-03-15
申请人： NGK Insulators, Ltd.
发明人： Kensuke Okumura
摘要： A method for manufacturing a honeycomb structure, includes: a step of manufacturing a honeycomb formed body to manufacture a non-fired honeycomb formed body, the non-fired honeycomb formed body including a raw material composition containing a ceramic raw material and water; an induction drying step of drying the manufactured non-fired honeycomb formed body by induction drying to obtain a honeycomb dried body; and a firing step of firing the obtained honeycomb dried body to obtain a honeycomb structure. The induction drying step is to remove 10 to 50% of the entire water that the non-fired honeycomb formed body contained before drying by induction drying to obtain a first dried honeycomb formed body, then turn the first dried honeycomb formed body upside down and remove the residual water by further induction drying to obtain the honeycomb dried body.
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公开(公告)号：US09238308B2
公开(公告)日：2016-01-19
申请号：US14519653
申请日：2014-10-21
申请人： NGK Insulators, Ltd.
发明人： Keisuke Toba , Kensuke Okumura , Seiichiro Hayashi
摘要： A cutting method of a honeycomb formed body is provided. This is a cutting method of a honeycomb formed body in which, while a kneaded material containing a ceramic raw material is extruded to form a honeycomb formed body with a honeycomb shape having partition walls defining and forming a plurality of cells, the extruded honeycomb formed body is cut before drying by a cutting blade vibrated at a frequency of 0.3 kHz or more in a direction perpendicular to a direction in which this honeycomb formed body moves. It is preferably a cutting method of a honeycomb formed body in which the cutting blade is vibrated at a high frequency of 10 kHz or more.
摘要翻译： 提供了一种蜂窝成形体的切割方法。 这是一种蜂窝成型体的切割方法，其中，当将包含陶瓷原料的捏合材料挤出以形成具有限定并形成多个单元的隔壁的蜂窝形状的蜂窝成形体时，挤出的蜂窝成形体 在通过与该蜂窝成形体移动的方向垂直的方向以0.3kHz以上的频率振动的切割刀片进行干燥前，进行切割。 优选的是切割刀片以10kHz以上的高频振动的蜂窝成形体的切断方法。
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公开(公告)号：US11607824B2
公开(公告)日：2023-03-21
申请号：US16106183
申请日：2018-08-21
申请人： NGK INSULATORS, LTD.
发明人： Kensuke Okumura , Norihiro Asakura
IPC分类号： B28B11/24
摘要： A method for drying a honeycomb formed body, the honeycomb formed body being an unfired honeycomb formed body including a raw material composition containing a ceramic raw material and water, the method including: a dielectric drying process of obtaining a primary dried honeycomb formed body from which 30 to 70% of entire moisture contained in the unfired honeycomb formed body before the drying is removed by performing dielectric drying on the unfired honeycomb formed body while maintaining a temperature of a central portion of the unfired honeycomb formed body at 100° C. or less; and a microwave drying process of obtaining a honeycomb dried body from which residual moisture is removed by performing microwave drying on the primary dried honeycomb formed body obtained in the dielectric drying process.
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公开(公告)号：US11573052B2
公开(公告)日：2023-02-07
申请号：US15921913
申请日：2018-03-15
申请人： NGK INSULATORS, LTD.
发明人： Kensuke Okumura
IPC分类号： F26B3/347 , F01N3/022 , B28B11/24 , C04B35/626 , C04B38/00 , C04B41/53 , C04B38/06 , C04B35/195 , C04B41/50 , C04B111/00
摘要： A method for manufacturing a honeycomb structure, includes: a step of manufacturing a honeycomb formed body to manufacture a non-fired honeycomb formed body having volume of 7 L or more; a drying step of drying the manufactured non-fired honeycomb formed body to obtain a honeycomb dried body; and a firing step of firing the obtained honeycomb dried body to obtain a honeycomb structure. The drying step includes: an induction drying step to obtain a first dried honeycomb formed body by removing 20 to 80% of the entire water that the non-fired honeycomb formed body contained before drying, and a microwave drying step to obtain a honeycomb dried body by removing the residual water. The honeycomb dried body subjected to this microwave drying step is obtained by removing 90% or more of the entire water that the non-fired honeycomb formed body contained before drying.
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公开(公告)号：US11478953B2
公开(公告)日：2022-10-25
申请号：US16274484
申请日：2019-02-13
申请人： NGK Insulators, Ltd.
发明人： Kensuke Okumura
摘要： A manufacturing method of a honeycomb structure, including a vertical extrusion process, wherein the vertical extrusion process includes: an extrusion step of extruding the molding compound in the vertically downward direction from an extrusion die attached to an extruder; a honeycomb formed body receiving step in which a transfer pallet is placed at a position near the extrusion die, and a honeycomb formed body formed by continuously extruding the molding compound in the extrusion step is received and supported from below by the transfer pallet; and a pallet lowering step of lowering the transfer pallet while receiving and supporting the honeycomb formed body in synchronization with an extrusion speed of the molding compound from the extrusion die, and the transfer pallet is constituted of a laminate structure including: a pallet substrate; and a tabular mesh plate.
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公开(公告)号：US11156400B2
公开(公告)日：2021-10-26
申请号：US15921876
申请日：2018-03-15
申请人： NGK INSULATORS, LTD.
发明人： Kensuke Okumura
IPC分类号： F26B3/347 , B28B11/24 , C04B38/00 , C04B33/30 , C04B35/478 , C04B35/195 , F26B15/18 , C04B35/185 , C04B35/565 , C04B111/00
摘要： A method for manufacturing a honeycomb structure, includes: a step of manufacturing a honeycomb formed body to manufacture a non-fired honeycomb formed body, the non-fired honeycomb formed body including a raw material composition containing a ceramic raw material, 0.5 to 5.0 mass % of pore former and water; an induction drying step of drying the manufactured non-fired honeycomb formed body by induction drying to obtain a honeycomb dried body; and a firing step of firing the obtained honeycomb dried body to obtain a honeycomb structure. The induction drying step is to remove 20 to 80% of the entire water that the non-fired honeycomb formed body contained before drying by induction drying to obtain a first dried honeycomb formed body, then turn the first dried honeycomb formed body upside down and remove the residual water by further induction drying to obtain the honeycomb dried body.
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公开(公告)号：US10052790B2
公开(公告)日：2018-08-21
申请号：US15077067
申请日：2016-03-22
申请人： NGK INSULATORS, LTD.
CPC分类号： B28B11/241 , B28B11/243 , F26B3/347 , F26B2210/02 , H05B6/80 , H05B2206/046
摘要： A microwave drying method of a honeycomb formed body includes: an introduction step of disposing the honeycomb formed body while keeping an axis direction of cells of the honeycomb formed body vertically and introducing the honeycomb formed body into a drying furnace capable of irradiating with microwaves; a reflector placing step of placing a microwave reflector above the honeycomb formed body, the microwave reflector including a reflecting face having a coverage factor to an area of an end face of the honeycomb formed body that is 15% to 30%; and a microwave drying step of irradiating the honeycomb formed body with the microwaves of 915 MHz in frequency from above to dry the honeycomb formed body.
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