X-H rolling method for parallel-flange steel sections (supports)

摘要

A method of X-H rolling of a parallel flange steel structural shape or beam with an H cross section using a compact rolling group. In the first universal mill frame the vertical roll have roll surfaces inclined to one another at an angle up to 10° whereas in the second universal mill frame the vertical rolls have cylindrical roll surfaces which divide the H opening cross section with lateral surfaces of the horizontal roll. The structural shape is rolled in the second universal mill frame to up to 100% of the reduction in the first rolling mill frame.