METHOD FOR MANUFACTURING SEAMLESS STEEL TUBE

A production method of a seamless steel pipe capable of suppressing coarsening of crystal grains in a piercing mill is provided. The production method of a seamless steel pipe according to the present embodiment includes a heating step of heating an Nb-containing steel material to 800 to 1030°C, a p...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SAKAMOTO, Akihiro, SHIMODA, Kazuhiro, OBE, Haruka, ARAI, Yuji, DAIMON, Yasuhiko, YAMANE, Kouji
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS 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 TREATMENT OF ALLOYS OR NON-FERROUS METALS
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