METHOD OF ASYMMETRIC METAL ROLLING Russian patent published in 2014 - IPC B21B1/00 

FIELD: metallurgy.

SUBSTANCE: method of manufacture of bar sections in four-roll gage with two pairs of parallel rollers, includes rolling with mismatch of rollers speeds at equality of peripheral speeds of one of rollers pairs. The increase of level of metal processing at the expense of the large shear deformations allowing to obtain finer grade of grain, is provided because the peripheral rollers speeds of the second pair differ from each other, and are not equal to peripheral rollers speeds of the first pair at observance of conditions, that the values of peripheral rollers speeds of the second pair are less than the values of peripheral rollers speeds of the first pair, or the values of peripheral rollers speeds of the second pair are grater than the value of peripheral speeds of the first pair, or the value of peripheral speed of one of the rollers of the second pair is greater, and of another - less than the value of peripheral speeds of first pair rollers.

EFFECT: non-uniform redistribution of rolling-outs along the cross-section of the deformed stock material.

3 dwg