To provide a method of manufacturing H-section steel with which high quality H-section steel can be manufactured from an H-section steel raw material having a flat cross section.
When a web rolling reduction amount when a web part of the H-section steel raw material formed into a dog bone shape is rolled and reduced by a web rolling reduction groove 11 is X and the width of flange parts formed on both sides of the web part is H, a width E between an inside face 11a of the web rolling reduction groove 11 and a bite-out suppressing part 13 formed between peripheral face parts of grooved rolls 6, 7 is set to E=0.10X/2 to 0.20X/2, a height h of the bite-out suppressing part 13 is set to h≤0.35H, and the H-section steel raw material is rough rolled.
SAKURAI TOMOYASU
AZUMA ETSUO
| JP2000233201A | 2000-08-29 | |||
| JP2000202501A | 2000-07-25 |
Megumi Konishi
Hide Tanaka Tetsu
Ichi Hirose
Toru Miyasaka
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