Width pressure lower modulo of high-temperature throb and tool null under width

摘要

PURPOSE:To restrain generation of variations in longitudinal width of a pressed product by constructing the edging face of a edging tool of a roughly working part and a finishing part, providing a proper slope to the finishing part, and edging a hot slab. CONSTITUTION:The edging face of a edging tool 1 press working a hot slab to have a prescribed width is constructed of a roughly working part 12 and a finishing part 11 adjoining to the part 12. A slope angle beta of the part 11 is =3 deg. and a length L0 of the part 11 is set to be in the range of 1.0-2.0 times a distance of one feeding amount of the hot slab. Generations of width variation are reduced by use of the tool 1 and press worked products with the improved width accuracy are obtained.