FIELD: production of different cross section mean and small rolled metallic bars. SUBSTANCE: method allows to change lengthwise rolling process by end expanding. It reduces expense approximately by 30%, especially at making small rolled bars. Method comprises steps of end expansion of ingot portion extending from die and simultaneously separating expanded ring with cross section shape corresponding to necessary profile of rolled metal, then chopping formed ring and unbending it along straight line. In order to eliminate curved end portions, formed rod is rolled in one or two passes between grooved rolls in lengthwise rolling mill. Maximum effect is achieved at combining method with continuous steel casting. In such case ingot is simultaneously cut. EFFECT: enhanced efficiency. 3 cl, 4 dwg
Authors
Dates
1999-03-20—Published
1997-07-29—Filed