| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling method and rolling equipment for unequal angle steel, enabling the production efficiency of the unequal angle steel to be improved by enabling the dimensional accuracy and a surface quality thereof to be well secured.SOLUTION: Rolling equipment 12 is equipment for rolling an unequal angle steel 10 by drafting the short side 26a and the long side 26b of a rolled material 26 roughly formed in an L-type cross section, and includes an intermediate rolling mill group 22. The intermediate rolling mill group 22 includes each of: one or more first rough universal rolling mill 16; one or more second rough universal rolling mill 20; and one or more edger rolling mill 18. The first rough universal rolling mill 16 includes a pair of upper-lower horizontal rolls 28a and 28b for drafting a thickness of the long side 26b except for both end parts, one vertical roll 30a for drafting the whole outer surface of the short side 26a and the other vertical roll 30b for drafting the tip of the long side 26b. The second rough universal rolling mill 20 includes a pair of upper-lower horizontal rolls 32a and 32b for drafting a thickness of the whole width of the long side 26b and a vertical roll 34a for drafting a thickness of the short side 26a except for the boundary vicinity with the long side 26b. The edger rolling mill 18 includes a roll 38a for drafting a width of the short side 26a. |
