MANUFACTURE OF METALLIC SHEET

PURPOSE:To manufacture a metallic sheet for a valve body and a valve box simply and at low cost by bending a metallic pipe having a tracklike section to circular form and cutting it at a dividing face along a longitudinal direction. CONSTITUTION:A metallic pipe having a tracklike section is cut at a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TANIZAKI YASUO, KANAMORI NOBUO
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS CYLINDERS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PISTONS PUNCHING METAL SEALINGS TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES WEAPONS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	PURPOSE:To manufacture a metallic sheet for a valve body and a valve box simply and at low cost by bending a metallic pipe having a tracklike section to circular form and cutting it at a dividing face along a longitudinal direction. CONSTITUTION:A metallic pipe having a tracklike section is cut at a dividing face F that extends along a longitudinal direction and divided into an outer peripheral part 2 that has an arcuate section and an inner peripheral part 3, and made to metallic sheet. The outer peripheral part 2 is fitted to a curved sheet fitting part 7 of a valve body 5 by its flat part 2a in an open-side state, and the free end part 2b is pressure-welded to a sheet 7 of valve box side and sealed surely by elastic deflection deformation. The flat part 3a of the inner peripheral part 3 is fitted to a curved sheet fitting part 14 bulged to the flow passage side of a valve box 6. The free ene side 3b is positioned at the outside of the valve box in a radial direction and the elastic deflection is performed by pressure- welding to the valve body side sheet 13 to ensure sealing.