METHOD FOR ROLLING H-SECTIONS

FIELD: processes and equipment for rolling merchant bars, possibly in continuous, semicontinuous and tandem mills for rolling H-sections, mainly wide-flange beams. SUBSTANCE: method comprises steps of cutting rectangular billet in two cutting roll grooved passes; further rolling of cut section in st...

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Bibliographische Detailangaben
Hauptverfasser:	POGORELOV A.I, BESPALOV V.N, SHILOV V.A, KOPYLOV I.V, TIMOFEENKO O.V, SHVARTS D.L, BESPALOV A.V, NEDOREZOV V.A
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	FIELD: processes and equipment for rolling merchant bars, possibly in continuous, semicontinuous and tandem mills for rolling H-sections, mainly wide-flange beams. SUBSTANCE: method comprises steps of cutting rectangular billet in two cutting roll grooved passes; further rolling of cut section in straight horisontal and universal beam grooved passes; cutting rectangular blank alternatively at first from one side, for example at upper side and then at other lower side; determining height of cutting ridge and bottom width of grooved pass with ridge according to relations: Hr = (0,101/0,191).Dm-deltah, Bbw = B0-2.Hr.tg where Hr - height of cutting ridge; Bbw - bottom width of grooved pass with ridge; Dm - mean diameter of rolls; deltah - reduction degree of flanges while taking shrinkage into account ; B in - width of initial blank; tg - slope of lateral walls of grooved pass. EFFECT: enhanced conditions for biting blank, improved quality of cut rough section and ready H-beam, especially at rolling H-beams with high flanges. 4 dwg