METAL MEMBER FORMING METHOD, METAL MEMBER, AND METAL MEMBER FORMING DEVICE

PROBLEM TO BE SOLVED: To provide a metal member forming method, a metal member, and a metal member forming device for achieving the forming property and higher strength of the metal member. SOLUTION: The cylindrical metal member 1 having a hollow chamber 10 and a forming die 3 having a forming die f...

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Bibliographische Detailangaben
Hauptverfasser:	WATANABE HARUO, IZEKI HAKUSHIN
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 TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a metal member forming method, a metal member, and a metal member forming device for achieving the forming property and higher strength of the metal member. SOLUTION: The cylindrical metal member 1 having a hollow chamber 10 and a forming die 3 having a forming die face 31 are used. The metal member 1 is heated to a quench-strengthening temperature zone (e.g. A1 transformation temperature or above). By increasing the internal pressure of the gas in the hollow chamber 10 of the heated metal member 1, a wall 1a of the metal member 1 is swollen (plastically deformed), and the swollen wall 1a of the metal member 1 is brought into close contact with the forming die face 31 of the forming die 3 to perform the forming and the quench-strengthening. The wall 1a of the metal member 1 is hardened, and the strength of the metal member 1 is increased thereby.