CHANNEL BAR ROLLING METHOD Russian patent published in 1999 - IPC

FIELD: metallurgy, namely, rolling channel bars or other flanged sections with use of final universal rolling pass. SUBSTANCE: rolled piece is rolled in prefinal double-roll semiclosed pass and in final universal four-roll pass. Outer angles of roll passes are the same. Rolled piece is deformed in final roll pass, mainly, according to web thickness and flange thickness along distance consisting 0.7-0.8 of their lengths at side of free end at smoothly increasing reduction value towards end and keeping minimum total elongation value. EFFECT: production of section with stable profile. 1 ex, 2 dwg