METHOD AND APPARATUS FOR HOT-CALIBER-ROLLING BAR STEEL

• Main Authors: MUROYA YUKI, SHIRANO GO, DOBASHI TOMOYA, KUSHIDA HITOSHI, SAKAI HIDENORI
• Format: Patent
• Language: English
• Published: 16.09.2010
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

PROBLEM TO BE SOLVED: To prevent the occurrence of surface flaws in a method for hot-caliber-rolling bar steel. SOLUTION: This method for hot-caliber-rolling the bar steel is a method for hot-rolling by the calibers by which a rolled stock 2 is hot-rolled by rolling with square-caliber rolling rolls 9 after rolling with diamond-caliber rolling rolls 9 and a lubricant 15 is supplied to the rolled stock 2 on the upstream side of the inlet side of the square-caliber rolling rolls 9. Furthermore, preferably, it is better to measure the angle θ of twist of the rolled stock 2 on the outlet side of the diamond-caliber rolling rolls 9, to adjust the feed rate of the lubricant 15 on the basis of the measured angle θ of twist and to feed the lubricant 15 when the angle θ of twist is ≥ 3°. COPYRIGHT: (C)2010,JPO&INPIT