SQUARE STEEL TUBE MANUFACTURING MANAGEMENT DEVICE, SQUARE STEEL MANUFACTURING MANAGEMENT METHOD, SQUARE STEEL TUBE MANUFACTURING METHOD, AND SQUARE STEEL TUBE MANUFACTURING MANAGEMENT SYSTEM

Japanese Patent JP2022185474

A

To provide a square steel tube manufacturing management device, a square steel tube manufacturing management method, a square steel tube manufacturing method, and a square steel tube manufacturing management system capable of accurately acquiring a desired corner curvature radius R.SOLUTION: A square steel tube manufacturing management device 12 for manufacturing a square steel tube by square-molding a stock steel tube via a square-molding stand comprises: a peripheral length change rate calculation unit 126 that calculates a peripheral length change rate rn from a difference between the peripheral length of the stock steel tube to be square-molded from a tube surface to a position 3t/8-5t/8 (t: thickness) in a thickness direction and the peripheral length of the tube surface of the square-molded steel tube to the position 3t/8-5t/8 in the thickness direction; and a square-molding stand state determination unit 127 that determines the state of the square-molding stand 9 on the basis of the peripheral length change rate rn.SELECTED DRAWING: Figure 5

JP2731341	[Title of Invention] 4-roll drive type tube forming apparatus
JP2507749	INDUSTRIAL APPLICABILITY: Thin-walled tube thickening processing device

MATSUMOTO MASASHI
OKAZAKI TOSHIRO
TANAKA SHUNICHI
IDE SHINSUKE

JP2021093188A

December 14, 2022

June 02, 2021

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JFE STEEL CORP

B21C37/15; B21B38/04; B21C37/08; B21C51/00; G01B21/20

Tetsuro Isomura
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori

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