METHOD OF CORRUGATED EQUAL CHANNEL PROFILING Russian patent published in 2009 - IPC B21D5/06 

FIELD: metallurgy.

SUBSTANCE: invention relates to rolling, particularly to cold-bent profiling technology intended mainly for corrugated equal channel production from galvanised strip work piece with thickness S to 1.2 mm. Beads are bent in the first three gates according to the mode specified in the formula. The radius of bending is equal to the doubled thickness of the strip. The longitudinal corrugation on the shelves is formed in the third gate. The shelf is bent with bending radius between shelves and walls equal to the strip thickness, and bending is started from the fourth fate. The longitudinal corrugation is formed on the wall in the last gates. In addition, the final beads bending inward the above channel is made at a certain angle to its shelves and in the last four gates at a certain bending angle.

EFFECT: improved geometry of channels.

1 dwg, 1 ex