FACILITY FOR TREATING LOW-TEMPERATURE MATERIAL

PROBLEM TO BE SOLVED: To provide a low-temperature material treating facility which reasonably connects a piping 1 made of Fe-Ni-based low-thermal-expansion-coefficient alloy with a pipe coupling or an apparatus made of stainless-steel. SOLUTION: An extension straight pipe portion 3 made of a same m...

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Bibliographische Detailangaben
Hauptverfasser:	KOMORI KANJI, TAKAO MASAZUMI, IWAHASHI HIROSHI, TAKEUCHI NOBUYOSHI, YAMAMOTO SHUJI, KISHIMOTO SETSUJI, KUBO NAOSHIGE
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MACHINE TOOLS MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PIPES SOLDERING OR UNSOLDERING SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a low-temperature material treating facility which reasonably connects a piping 1 made of Fe-Ni-based low-thermal-expansion-coefficient alloy with a pipe coupling or an apparatus made of stainless-steel. SOLUTION: An extension straight pipe portion 3 made of a same material is provided for a piping 1 made of Fe-Ni-based low-thermal-expansion-coefficient alloy and for a coupling (bent pipe 6, branch pipe 7) or an apparatus (valve 2 or others) made of stainless-steel pipe, and this low-thermal-expansion- coefficient alloy made piping is welded with this extension straight pipe portion 3. The length L (mm) of the straight pipe portion 3 is longer than 0.6 (R×t) , where R is outer radius (mm) of the extension straight pipe portion, and (t) is its thickness (mm). Because different material welding is a welding between the straight pipes, thermal stress distribution can be predicted and stress analysis and piping design become easy.