METHOD OF ROLLING Russian patent published in 2010 - IPC B21B1/02 

FIELD: process engineering.

SUBSTANCE: rolling of dual sectional bars comprises billet heating, rolling the biller at rough intermediate gages of the stand to form dual roll stock, lengthwise separation into two lines and rolling said lines at leader gages and finishing gage "square". Elimination of barbs resulted from separation into two lines is made by rolling said lines through leader gages "square-rhomb". Note here that finishing gages "square" is adjusted prior to rolling by means of lengthwise displacement of one roll relative to another so that top edge of square on top roll is displaced for 0.10-0.15 mm with respect to bottom edge of square on bottom roll. Note also that in rolling aforesaid lines through leader gage "square", every line is canted for 90 degrees at 5.5 m to the next leader gage "rhomb" so that rolling-up of the separation traces on each line is performed at leader gage "rhomb" and finishing gage "square".

EFFECT: higher quality of sectional bars.

5 dwg