Four-wire split rolling process of φ12mm round steel

Abstract

The invention discloses a four-line splitting rolling technology for fai 12mm round steel. The dimension tolerance of the height and the width of a rolled piece is no larger than + / -0.2mm through K5 pre-splitting pass, the center-to-center spacing of two hole patterns of in the middle of a K4 pre-splitting pass roller is 16mm, the center-to-center spacing of two hole patterns on two sides is 47.8mm, and the wedge angle of the roller is 85 degrees to 87 degrees; the arc radius R4 of the wedge top is 1.5-1.8mm, the wedge top space of an upper roller and a lower roller is 6.8mm, and the radius RK4 of a pre-splitting hole is 6.6mm; the wedge angle of a K3 splitting pass roller hole pattern is 55 degrees to 60 degrees; the arc radius R3 of the wedge top is 0.6-0.7mm, the height of the groove bottom is 14.13mm, the distance between the wedge tops is 0.7-0.9mm, the center distance of two middle grooves is 16.2mm, the center distance of two side grooves is 49.7mm, and the radius of the groove bottom is 6.8mm; front-row splitting wheels and rear-row splitting wheels are installed at the position of an outlet of the rolled piece of a K3 splitting pass from front to back at intervals, the double-edge splitting wheel edge strip wedge angle of each front-row splitting wheel is 55 degrees to 60 degrees, the double-edge center distance is 31.2-33.2mm, and the width of each wedge top is 1.6-2.2mm; the single-edge splitting wheel wedge angle of each rear-row splitting wheel is 85 degrees, the width of each wedge top is 0.8mm, and the distance between axes of the front-row splitting wheels and rear-row splitting wheels is 100mm.

Description

technical field [0001] The invention relates to a round steel split rolling process, in particular to a Φ12mm round steel four-wire split rolling process. Background technique [0002] Slitting and rolling of round steel, due to the obvious defects of slitting strips, basically no domestic production plant can apply this process. Different from rebar products, round steel requires high ellipticity, smooth surface, no visible slitting belt folding is allowed, and adjustment is difficult. Therefore, the development of round steel slitting process cannot be gradually developed from double wire to rebar like rebar. The current three-wire, four-wire or even 5-wire split rolling. Contents of the invention [0003] The purpose of the present invention is to provide a four-wire split rolling process for Φ12mm round steel, which has reasonable process steps and can effectively carry out four-wire split rolling for round steel. The round steel produced has a smooth surface and high...

AI Technical Summary

Problems solved by technology

Different from rebar products, round steel requires high ellipticity, smooth surface, no visible slitting belt folding is allowed, and adjustment is difficult. Therefore, the development of round steel slitting process cannot be gradually developed from double wire to rebar like rebar. The current three-wire, four-wire or even 5-wire split rolling

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