Three-strand splitting rolling method for rebars with diameter phi of 12 mm

Abstract

The invention discloses a three-strand splitting rolling method for rebars with the diameter phi of 12 mm. 18 rolling mills are involved in the method. The 18 rolling mills are divided into a roughing mill unit, an intermediate mill unit and a finishing mill unit, wherein the roughing mill unit includes 6 rolling mills, the intermediate mill unit includes 6 rolling mills, and the finishing mill unit includes 6 rolling mills. Billet steel is rolled by the 18 rolling mills in sequence, and the technological material shape and size of the 18 rolling mills are optimized and adjusted. The three-strand splitting rolling method for the rebars with the diameter phi of 12 mm solves the problems that split strips are seriously folded, the three-strand difference is unstable, and the degree of freedom of rolled pieces is controlled, the height, width and side wall slope of hole patterns are reasonably controlled, it is avoided that the rolled pieces deflect and collide with loop rolls or loop side walls when entering loops, and rolling rejects are generated, it is avoided that the rolled pieces get stuck at loop-rising roll gaps, the surface quality of finished products is improved, and the size of the finished products is stabilized.

Description

technical field [0001] The invention relates to the technical field of multi-line slit rolling, in particular to a three-slit rolling method for φ12mm steel bars. Background technique [0002] Slit rolling means that during the rolling process, the steel billet is rolled into two or more parallel parts with the same cross-sectional shape through pass design, and then the billet is longitudinally cut into two or more cross-sections by the cutting equipment. The same shape of the rolled piece, and continue rolling until the finished product is obtained. The existing φ12mm steel bar three-slit rolling process easily leads to unstable three-line difference, large amount of scrap, easy to form folds after rolling, affecting the surface quality of the rolled material, and the rolled piece is easy to twist, affecting the structural performance of the rolled piece. Contents of the invention [0003] The technical problem to be solved and the technical task proposed by the present...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved and the technical task proposed by the present invention are to improve the existing technology, provide a three-segmented rolling method of φ12mm steel bar, and solve the problem that the traditional three-segmented rolling of φ12mm steel bar is easy to cause three-line difference in the current technology. Unstable, large amount of rejects, easy to form folds after rolling, affecting the surface quality of rolled products

The three-segmented rolling method of φ12mm steel bars described in the present invention adjusts and optimizes the shape and size of the process material processed by the rolling mill, thereby solving the problems of serious folding of the slit band and unstable three-line difference, so that the degree of freedom of the rolled piece is controlled, and the hole is reasonably controlled The height, width and side wall slope of the profile ensure the fullness of the pre-cut hole at the 15th rolling mill, and at the same time avoid running off the looper roll or the side wall of the looper when entering the looper, causing rolling waste, and avoiding the rolling of the rolled piece in the looper. The jamming phenomenon occurs in the gap of the sleeve roll, which improves the performance of the rolled piece and ensures the quality of the rolled piece

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