procedure for the manufacture, at the same time, several bars and billets from a flat semi-finished products

摘要

The rolls progressively change the cross-section of the blank to one comprising multiple parallel bars linked by webs, and at the end of the transitional zone the bars are displaced transversely to the webs whereby they are separated. The initial cross-sectional area is no less than the sum of those of the product bars, and the initial width not greater than the total width of the closed passed of the mill rolls. The stepwise advancement of the workpiece alternates with the bar separation step. There are also claims to mill rolls for the process, each roll having several grooves each of varying cross-section. The roll contour is defined by a mathematical formula involving rolling parameters. Useful for bars produced in continuous casting plant. Roll wear and energy requirements are reduced.