Method for preventing heat treatment ellipse becoming of large-diameter seamless steel pipe

The invention discloses a method for preventing heat treatment ellipse becoming of a large-diameter seamless steel pipe. Four clamping pieces are welded at one end of the large-diameter seamless steel pipe, and a hanging plate is welded on the clamping pieces, the large-diameter seamless steel pipe...

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Bibliographische Detailangaben
Hauptverfasser:	YAN YONG, LIU BO, ZOU YOUFU, GUO YUANRONG, LUO NENG
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 MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention discloses a method for preventing heat treatment ellipse becoming of a large-diameter seamless steel pipe. Four clamping pieces are welded at one end of the large-diameter seamless steel pipe, and a hanging plate is welded on the clamping pieces, the large-diameter seamless steel pipe is suspended vertically in a well-type heating furnace by using the hanging plate, and heat treatment is carried out. The method can effectively avoid integral ellipse becoming of the large-diameter seamless steel pipe.