METHOD FOR SECTION BAR ROLLING Russian patent published in 2009 - IPC B21B1/16 

FIELD: technological processes.

SUBSTANCE: method includes multi-stage pressing of strip in continuous rough and finishing groups of cages. In the last cage of rough group strip is pressed with drawing of 1.10-1.20, upstream finishing group of cages strip is diverged from rolling axis at the angle of 10-30 degrees with formation of loop that is at least 150 mm long, at that in case of speed of strip entry in finishing group of cages reduces in relation to speed of its exit from the last cage of rough group, angle of strip divergence from rolling axis and loop length are increased, otherwise they are decreased. Strip tension between the last cage of rough group and finishing group of cages may be maintained at zero level.

EFFECT: higher quality of section bars and yield of rolling on light-section and wire mills with continuous groups of cages.

2 cl, 1 dwg, 1 tbl, 6 ex