Частное Акционерное Общество "Донецксталь" - Металлургический Завод
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A rolling method of flat-bulb profiles includes successive deformation of an initial billet in a system closed shaped strip roughing and finishing passes with forming a shelf and a bulb part on one of its ends and with a ratio of stretches along the elements of the cross-section of billet up to obtaining finished profile. Further, in the first shaping rough pass at the end of shelf opposite to the bulb part a thickening is formed with cross-sectional area equal to the cross sectional area of 0.45-0.6 of bulb part. Billet deformation in the next shaping rough passes is conducted with a ratio of stretches along the elements of the cross-section of breakdown bar as EMBED Equation.3 , observing the equalities of stretches of end elements of breakdown bar EMBED Equation.3 , successively reducing the height of thickening in the finishing pass up to the shelf thickness of finished profile.
UAU201307564U2013-06-142013-06-14Rolling method of flat-bulb profiles
UA88179U
(en)