HOT-ROLLING METHOD FOR STEEL

Japanese Patent JP3671200

B2

PROBLEM TO BE SOLVED: To provide a hot-rolling method for steel by which the steel having the high accuracy of dimension is manufactured even in rolling using a walking beam furnace for heating and the steel having the dimension of a cross section over a wide range is manufactured at high accuracy of dimension and a low cost.
SOLUTION: In this hot-rolling method for the steel, a stock to be rolled is heated with a walking beam type heating furnace 1, next, heated with an induction heating furnace 2, rolled with a skew rolling mill 3, rolled with a roughing mill 5 and, after that, rolled with a precision rolling mill 7. After the rolling with the precision rolling mill 7, furthermore, the steel is rolled with a finishing mill 8. Heating with the induction heating furnace 2 has the minimum time for reducing or eliminating skid marks generated in the walking beam type heating furnace, a plurality of coils are controlled with a plurality of controllers so that the temperature of the surface layer dos not ascend too high, and proper distance is provided between the coils for surface heat radiation.

JP5737636	Copper for wire rod
JPH06190420	HOT ROLLING METHOD FOR BAR/WIRE ROD

Kyotaro Tento
Yoshitaka Nakamura
Akira Yoshizawa Exhibition
Yutaka Satano

JP2001354270A

July 13, 2005

November 20, 2001

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Nippon Steel & Sumikin Stainless Steel Co., Ltd.

B21B1/16; B21B3/02; B21B13/00; B21B45/00; (IPC1-7): B21B1/16; B21B3/02; B21B13/00; B21B45/00

JP5329510A

Shunta Naito
Hisataka Tanaka

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