METHOD OF MANUFACTURING BAR STEEL PRODUCT

PROBLEM TO BE SOLVED: To provide a method of manufacturing a bar steel product, configured to prevent occurrence of end surface cracks after cutting without lowering a product value or productivity of the bar steel product, in the bar steel product manufacturing method for manufacturing the bar stee...

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Bibliographische Detailangaben
Hauptverfasser:	TAKI YASUHISA, MUROYA YUKI, TAHIRA TOMOHIDE, KUBOTA YOSHIHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	BROACHING FILING FORGE FURNACES FORGING HAMMERING LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOTOTHERWISE PROVIDED FOR MACHINE TOOLS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PLANING PRESSING METAL PUNCHING METAL RIVETING SAWING SCRAPING SHEARING SLOTTING TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method of manufacturing a bar steel product, configured to prevent occurrence of end surface cracks after cutting without lowering a product value or productivity of the bar steel product, in the bar steel product manufacturing method for manufacturing the bar steel by cutting a rolled material with cold shear after cooling the rolled material subjected to hot rolling or direct rolling.SOLUTION: A method of manufacturing a bar steel product 10 is provided for manufacturing a bar steel by cutting a rolled material 1 with cold shear 5 after cooling the rolled material subjected to hot rolling or direct rolling. In the cold shear 5, while applying a compressive force to both ends equivalent of the bar steel before or after the cutting with a holding die for holding the rolled material 1, the rolled material 1 is cut to make the bar steel product 10.