METHOD FOR PREPARING ROLLS OF SHEET ROLLING FOUR-HIGH STAND FOR EXPLOITATION Russian patent published in 2002 - IPC

FIELD: metallurgy, particularly, exploitation of rolls of four-high sheet rolling stand. SUBSTANCE: method comprises steps of mounting rolling and backup rolls in rolling stand, applying to them effort Prun designed for mutual forcing of rolls in plane containing roll axes and exceeding rolling effort Prol; realizing common rotation of loaded rolls at normalized rate and rotation time period; supplying cooling and lubricating liquid to rolls. Backup rolls with initial rigidity less than 65 HSh are strengthened by effort Prun of their mutual forcing at Prun = (1.2-1.35)Prol. Backup rolls with initial rigidity more than 65HSh are strengthened by effort Prun=(1.01-1.1)Prol of their mutual forcing. EFFECT: optimized modes for roll strengthening at taking into account initial parameters of rolls. 1 dwg, 2 tbl, 1 ex