FIELD: mechanical engineering. SUBSTANCE: invention aims at removing end effect consisting in decreased diameter of the object on regions adjacent to its ends. Object is fastened by holders having canals for supply and withdrawal of cooling fluid, end protrusions of holders are inserted into the hole of object so preventing cooling fluid from being in direct contact with regions adjacent to the ends of object. Length of holder end protrusions is specified within the range from 6 to 25 mm. EFFECT: facilitated restoration procedure. 2 cl, 1 dwg
