DEVICE FOR HARDENING PASSES BY HFC

The invention relates to a device for hardening cold-rolling semicircular passes, especially for hardening semicircular hollow flutes with variable cross-section, which in order to harden successively is characterized by the use a half-turn inductor (19) provided with a support (1) which may concomitantly accomplish, for the semicircular pass (2) subjected to the hardening, a movement lenthwise the semicircular flutes, a tilting movement in relation to the inductor (19) plane at various angles so that its projection in the cross division plane be an ellipse section which aproximates the semicircular shape of the flutes and a third movement by which the semicircular pass (2) moves away from the half-inductor (19) to keep a constant distance in relation to the bottom of the flutes. Inventia se refera la un dispozitiv pentru calirea prin C.I.F. a semicalibrelor laminoarelor la rece, in special pentru calirea canalelor cave semicirculare, cu sectiune variabila, caracterizat prin aceea ca, in scopul calirii succesive, se foloseste un inductor (19) semispira, prevazut cu un suport (1) ce poate executa, concomitent, pentru semicalibrul (2) supus calirii, o miscare de parcurgere a canalului semicircular, o miscare de inclinare fata de planul inductorului (19) cu diferite unghiuri astfel, incat proiectia acestuia in planul transversal de sectionare a canalului este o portiune de elipsa, care aproximeaza forma semicirculara a canalului, si o a treia miscare, care realizeaza o indepartare a semicalibrului (2) de inductorul semispira (19), pentru a pastra o distanta constanta si fata de fundul canalului.