TIGHTENING STRUCTURE OF HIGH TEMPERATURE FLANGE

PURPOSE:To prevent the reduction of the tightening force even if temperature rises after tightening, by installing a sleeve made of the material having the larger linear expansion coefficient than that of a tightening bolt, together with a flange and gasket which are to be fastened, between the head...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TATSUTA SATOSHI, YAJIMA KENICHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMISTRY DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL THERMAL INSULATION IN GENERAL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To prevent the reduction of the tightening force even if temperature rises after tightening, by installing a sleeve made of the material having the larger linear expansion coefficient than that of a tightening bolt, together with a flange and gasket which are to be fastened, between the head part of the bolt and a nut. CONSTITUTION:A sleeve 3 made of the material having the larger linear expansion coefficient than that of a bolt 1 and a sleeve 4 made of the material which can be treated with easy gas cut are previously fitted freely onto the bolt 1, and in tightening, these components are nipped between the heat part 1a and a nut 2, together with two flanges A1 and B21 and a gasket A4. Therefore, if the temperature of the tightened part is raised after tightening, the constitution parts are thermally expanded, and the generation of gap between the tightened materials and the reduction of the fastening force can be prevented, since the sleeve 3 has the larger linear expansion coefficient than that of the bolt 1.