METHOD OF AND DEVICE FOR HEAT TREATMENT OF STAINLESS STEEL PIPE

PROBLEM TO BE SOLVED: To provide a method of and a device for heat treatment of a stainless steel pipe, including: measuring in advance the amount of coolant just after starting of supply to the inside of a pipe residual stress relief unit in an aerial state and controlling the supply of the coolant...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	AOIKE SATOSHI, FUKUDA YUKA, ORITANI NAOHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR POWER PLANT PHYSICS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method of and a device for heat treatment of a stainless steel pipe, including: measuring in advance the amount of coolant just after starting of supply to the inside of a pipe residual stress relief unit in an aerial state and controlling the supply of the coolant.SOLUTION: A circulation loop of coolant is formed by a water storage tank, a water feed pump, a flowmeter, pipes, and a channel switching device. The amount of circulating coolant is measured beforehand by the flowmeter in the circulation loop, and controlled to a predetermined amount or more. A channel switching device performs switching so that the supply amount of coolant just after starting of the supply to the residual stress relief unit of the stainless steel pipe whose inside is in an areal state is controlled so as to attain relief of residual stress of the stainless steel pipe by the reliable heat treatment.