METHOD OF END ROLLING OUT OF FLAT RINGS Russian patent published in 1995 - IPC

FIELD: metal forming. SUBSTANCE: method comprises steps of rolling out an initial annular blank along one of its end surfaces by two transitions in such a way, that at first transition a deformation degree of the blank consists (60-80)% of its objective value; performing a first-transition deformation at temperature of rolling out process beginning, equal to 850 C, and performing a second-transition deformation at temperature, equal to 1200 C; upon end rolling out of rings of ductile material performing the first transition at 20 C and the second transition at temperature of the rolling out beginning, equal to 850 or 1200 C. EFFECT: enlarged manufacturing range. 3 cl, 2 dwg