Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
FURNACE CORE TUBE COMPOSITION, FURNACE CORE TUBE, AND METHOD OF MANUFACTURING FURNACE CORE TUBE
To provide a furnace core tube composition from which a furnace core tube superior in strength, thermal shock resistance, and low thermal conductivity can be obtained; a furnace core tube made of the furnace core tube composition; and a method of manufacturing the furnace core tube with high working efficiency.SOLUTION: A furnace core tube composition to be used for centrifugal molding includes: aggregate particles consisting of ceramic A particles having specific gravity of 2.4-2.8 and a particle diameter of smaller than 3.5 mm and ceramic B particles having specific gravity 2.7-3.4 and a particle diameter of 100 μm or smaller; and a binding agent consisting of ceramic C particles. A furnace core tube is manufactured by centrifugal molding and includes cordierite particles and mullite particles, in which the cordierite particles and the mullite particles are integrally constituted. A method of manufacturing the furnace core tube comprises the steps of: mixing and kneading the furnace core tube composition to obtain a mixed/kneaded material; casing the mixed/kneaded material into a cylindrical molding die and performing centrifugal molding to obtain an uncured molded product; curing the uncured molded product while retaining the product in the molding die to obtain a cured molded product; and releasing and drying the cured molded product.SELECTED DRAWING: Figure 1
【課題】強度、耐熱衝撃性及び低熱伝導性に優れる炉芯管が得られる炉芯管用組成物、この炉芯管組成物からなる炉芯管及び作業効率の高い炉芯管の製造方法を提供する【解決手段】炉芯管用組成物は、遠心成形に用いられ、比重２．４～２．８、粒径３．５ｍｍ未満のセラミックＡ粒子及び比重２．７～３．４、粒径１００μｍ以下のセラミックＢ粒子からなる骨材粒子と、セラミックＣ粒子からなる結合剤とを含む。炉芯管は、遠心成形により製造され、コージライト粒子及びムライト粒子を備え、コージライト粒子及びムライト粒子が一体となって構成される。炉芯管の製造方法は、炉芯管用組成物を混練して混練物を得る工程と、混練物を円筒状の成形用金型に流し込み、遠心成形して未硬化成形体を得る工程と、未硬化成形体を成形用金型に保持したまま養生して硬化成形体を得る工程と、硬化成形体を脱型・乾燥する工程を備える。【選択図】図１
FURNACE CORE TUBE COMPOSITION, FURNACE CORE TUBE, AND METHOD OF MANUFACTURING FURNACE CORE TUBE
To provide a furnace core tube composition from which a furnace core tube superior in strength, thermal shock resistance, and low thermal conductivity can be obtained; a furnace core tube made of the furnace core tube composition; and a method of manufacturing the furnace core tube with high working efficiency.SOLUTION: A furnace core tube composition to be used for centrifugal molding includes: aggregate particles consisting of ceramic A particles having specific gravity of 2.4-2.8 and a particle diameter of smaller than 3.5 mm and ceramic B particles having specific gravity 2.7-3.4 and a particle diameter of 100 μm or smaller; and a binding agent consisting of ceramic C particles. A furnace core tube is manufactured by centrifugal molding and includes cordierite particles and mullite particles, in which the cordierite particles and the mullite particles are integrally constituted. A method of manufacturing the furnace core tube comprises the steps of: mixing and kneading the furnace core tube composition to obtain a mixed/kneaded material; casing the mixed/kneaded material into a cylindrical molding die and performing centrifugal molding to obtain an uncured molded product; curing the uncured molded product while retaining the product in the molding die to obtain a cured molded product; and releasing and drying the cured molded product.SELECTED DRAWING: Figure 1
【課題】強度、耐熱衝撃性及び低熱伝導性に優れる炉芯管が得られる炉芯管用組成物、この炉芯管組成物からなる炉芯管及び作業効率の高い炉芯管の製造方法を提供する【解決手段】炉芯管用組成物は、遠心成形に用いられ、比重２．４～２．８、粒径３．５ｍｍ未満のセラミックＡ粒子及び比重２．７～３．４、粒径１００μｍ以下のセラミックＢ粒子からなる骨材粒子と、セラミックＣ粒子からなる結合剤とを含む。炉芯管は、遠心成形により製造され、コージライト粒子及びムライト粒子を備え、コージライト粒子及びムライト粒子が一体となって構成される。炉芯管の製造方法は、炉芯管用組成物を混練して混練物を得る工程と、混練物を円筒状の成形用金型に流し込み、遠心成形して未硬化成形体を得る工程と、未硬化成形体を成形用金型に保持したまま養生して硬化成形体を得る工程と、硬化成形体を脱型・乾燥する工程を備える。【選択図】図１
FURNACE CORE TUBE COMPOSITION, FURNACE CORE TUBE, AND METHOD OF MANUFACTURING FURNACE CORE TUBE
炉芯管用組成物、炉芯管及び炉芯管の製造方法
KAWAI KAZUHIDE (Autor:in) / SUMIDA KENTO (Autor:in) / ONO ATSUSHI (Autor:in)
20.06.2022
Patent
Elektronische Ressource
Japanisch
IPC:
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
C04B
Kalk
,
LIME
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
| Europäisches Patentamt | 2021
Failure Analysis of ZG40Ni35Cr25Nb Furnace Tube
| British Library Online Contents | 2008
| Europäisches Patentamt | 2016