METHOD OF PRODUCING REINFORCED TOOL HAVING SHAPE OF BODY OF REVOLUTION Russian patent published in 1996 - IPC

FIELD: foundry. SUBSTANCE: axis and bandage consisting of several rings are produced. The bandage is put on axis according to the fit with gap. The value of gap between roller axis and each ring on the middle portion of the latter is constant and makes up (0,1...2,5)•10^-2 of bandage thickness. The length of the middle portion makes up from 0.3 to 0.8 of ring width. On the terminal portions of ring the gap value decreases along roller axis in proportion to departure from the middle portion. On the face ends of ring the gap value makes up (0,5...9,5)•10^-3 of bandage thickness. Then the superficial hardening of bandage is carried out from the induction heating up. The creation of initial gap changing along roller axis compensates nonuniform shrinkage of bandage at the consequent superficial hardening. EFFECT: enhanced reliability of connecting the bandage with axis. 2 tbl