| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide rolling equipment and rolling method of H-section steel for manufacturing, by rolling, H-section steel with sheet thickness increased portions at both ends of a web. <P>SOLUTION: Rolling equipment 1 of H-section steel includes a rough rolling mill 2, a group of intermediate rolling mills having at least one or more intermediate universal rolling mills 3, and a finish universal rolling mill 5; and has no projection-shaped step portion in the web rolling parts of the upper and lower rolls 21a and 21b of the rough rolling mill 2, but, at least, has a projection-shaped step portion with height not less than a half of sheet thickness difference allowed to the web of a final product of H-section steel in the central part of width of the upper and lower horizontal rolls 31a and 31b of the intermediate universal rolling mill 3. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
