METHOD OF PRODUCTION OF STRIP FROM ALUMINUM ALLOYS Russian patent published in 2005 - IPC

FIELD: metallurgy; plastic metal working; production of strips from aluminum alloys.

SUBSTANCE: proposed method includes multi-pass hot rolling and final rolling; last pass of multi-pass hot rolling is performed at rate of deformation of 60-150 1/s and degree of deformation of 35-60% at temperature of T_rec.+30 to T_rec.; after multi-pass hot rolling, metal is subjected to relaxation holding at temperature range of T_rec.+30 to T_rec. continued for 2-50 min; said rate of deformation, degree of deformation and temperature of last pass of hot rolling, as well as temperature and time of last relaxation holding ensure completeness of spontaneous recrystallization; final rolling is performed at degree of deformation of 30-75% at temperature range of from T_rec.-100 to T_rec.-150, where T_rec. is recrystallization temperature; then, roll is cooled in air. Ingots of mass no less than 5 t may be subjected to multi-pass hot rolling.

EFFECT: improved quality of metal possessing low anisotropy and enhanced mechanical properties.

2 cl, 1 ex