METHOD OF MANUFACTURE OF FORGINGS, PREDOMINANTLY OUT OF METALS AND ALLOYS OF TITANIUM SUBGROUP AND FORGING COMPLEX FOR PERFORMING THE SAME Russian patent published in 2003 - IPC

FIELD: plastic metal working; possibly, manufacture of forgings out of ingots and preliminarily deformed workpieces in forging complexes. SUBSTANCE: ingot is heated and forged under permissible range of forging temperature in press with one or two manipulators per several passes by means of four-side reduction in interhead forging apparatuses. Forging is carried out with forging reduction ratio of 2.0:1 - 32.0:1 per one heating of ingot within two stages. It the beginning, rough forging is performed in one or several four-head forging apparatuses for rough forging. Then sizing forging is carried out in four-head forging apparatus for sizing forging with forging reduction ratio of 1.05:1 - 1.8:1 and with embracing of cross- section perimeter of workpiece during each single reduction by means of each pair of working area of heads by 40-100%. Forging complex intended for realization of this method of manufacture of forgings incorporates forging press with upper and lower plates for fastening forging tools and movable tool table having several positions for replacement of forging tools. Forging tool consists of two or more four-head forging apparatuses with heads located in positions of tool table. One or several forging apparatuses are intended for rough forging and one forging apparatus is intended for sizing forging. Area of free interhead space in cross-section of forging apparatus for sizing forging at closed position of heads is by 1.1 - 1.4 times less than area of free interhead space of forging apparatus for rough forging. Working surface of each head of forging apparatus for rough forging consists of central plane and two side planes adjacent to it on two sides. EFFECT: enhanced quality of forgings. 5 cl, 10 dwg, 2 tbl