10th issue of the journal "Kalibrovochnoe byuro" (Pass Design Bureau)
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Section rolling production
A.S.Nefediev, S.P.Nefediev. NEW METHOD OF THREE-SLIT ROLLING IN THE PRODUCTION OF SECTIONS AND A UNIVERSAL STAND FOR ITS IMPLEMENTATION. Abstract. The method of three-slit on-stream rolling is developed. The method is the perspective direction of the multi-slit rolling with bridge breakage development. The four-rolling stand is developed for the three-slit rolling process realization. Keywords: multi-slit rolling, multistrand strip, roll pairs, billet, bridge breakage, four-rolls stand.
Flat rolling production
M.I.Rumyantsev, I.V.Fadeyev, R.O.Ryzhkin. FIRST APPROXIMATION OF ULTIMATE THICKNESS OF SEMI-FINISHED HOT-ROLLED PRODUCTS FOR COLD-SHEET STEEL PRODUCTION. Abstract. While developing the previous research the dependences have been obtained which allow choosing the first approximation of ultimate by its technical capacity summarized reduction mill. In addition, the corresponding thickness of the semi-finished roll products for cold rolling for the N passes of the sheet of the reference dimensions at the known characteristics of the strengthening properties of the hot-rolled metal has been chosen. Keywords: cold-rolled sheet steel, semi-finished hot-rolled products, ultimate summarized reduction, thickness of the semi-finished rolled products.
Special section rolling production
V.Y.Rubtsov. METHOD FOR CALCULATING THE FORCES FOR THE TRANSVERSE SCREW ROLLING OF PERIODIC PROFILES OF THE SEMI-ELLIPSOID SHAPE USING THE EXAMPLE OF СYLPEBS. Abstract. To expand the possibilities of the analytical calculation method for transverse screw rolling of periodic profiles, a method for calculating the forces for figures of the semi-ellipsoid form was developed. On the example of сylpebs with different ellipsoids, the effort was calculated and conclusions were drawn on the rationality of the choice of parameters. Keywords: cross-helical rolling, semi-ellipsoid form, сylpebs, contact surface area, specific pressure, total rolling force, profile.
Tube rolling production
D.Novokshonov, O.Sokolova, A.Lepestov. ENSURING THE STABILITY OF THE EDGES OF THE PIPE BILLET UNDER CONTINUOUS ROLL FORMING. Abstract. The research is devoted to the modern problems of the choice of the rollforming process by FEA modeling, the analysis of the problems connected with a choice of a correct position of the roll tool in the mill for reception of a stable process of shaping at transition to new standard sizes and on a new material. Keywords: weld tube, Rollforming, forming steps, process modeling, finite element method.