RU94027553A - Method of making trough-shaped bent section - Google Patents

Abstract

FIELD: metal pressure forming, namely, production of bent rolled bars. SUBSTANCE: method comprising steps of successive from pass-to-pass bending of strip blank by rolls with formation of roundings between joined members of its cross section, also comprises steps of bending up blank over first three passes by angle equal to 20 degrees with rounding radius values of that and next passes equal to thickness of section; upon the last pass simultaneously with deforming of section clamping its horizontal flanges by rolls. EFFECT: lowered labor consumption at making bent trough-shaped sections without deterioration of their quality due to decreased wear of rolls.

Claims (1)

The invention relates to the processing of metals by pressure, in particular the production of long bent sections of rolled products. The purpose of the invention is the reduction of labor costs in the production of bent trough profiles without reducing their quality level by reducing the consumption of rolls. The proposed method consists in sequentially bending the passages by rolls of a strip billet with the formation of curvature radii between the conjugate section elements and differs in that in the first three passes, the bending is performed at an angle of 20 ° with the radii of curvature in these and subsequent passages equal to the profile thickness, while the last pass simultaneously with the deformation of the profile produce clamping of its horizontal shelves rolls.