METHOD FOR SPREADING WIDTH OF SLAB BY FORGING

PURPOSE:To drastically increase the width spreading of the material of a thin thickness without any trouble by forging dy forming a tool shape so that the contact of a material and tool is started from one part in the material width direction and its position is gradually changed in the material wit...

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Hauptverfasser:	SEKI HIROMI, WATANABE KAZUO
Format:	Patent
Sprache:	eng
Schlagworte:	FORGE FURNACES FORGING HAMMERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PRESSING METAL PUNCHING METAL RIVETING TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To drastically increase the width spreading of the material of a thin thickness without any trouble by forging dy forming a tool shape so that the contact of a material and tool is started from one part in the material width direction and its position is gradually changed in the material with direction. CONSTITUTION:In various tool shapes such a tool shape that a forging start begins from the one part in the material width direction and its deformation is gradually transferred to the other parts as shown in the figure, for instance, is used. The metal subjected to rolling reduction is thus easy to flow in the width direction rather than the longitudinal direction and the width is increased. At the time when forging is executed by using this tool 4, a material 3 receives a compression by the tool 4, the tool tip part only compresses one part in the with direction of the material and the width spreading is started with the metal being flowed in the width direction. Even if the material progresses in order only one part in the width direction receives the compression on any section, width spreading is caused and the whole compression in the material width direction is completed.