Universal rolling device of ball flat steel and rolling method

Abstract

The invention discloses a universal rolling device and a rolling method for bulbous flat steel. The universal rolling device includes a universal rolling mill unit. The universal rolling mill unit is composed of 3-6 universal rolling mills, and any universal rolling mill has an upper level Roller (1), lower horizontal roller (2), operation side vertical roller (3) and transmission side vertical roller (4); the two ends of the lower horizontal roller (2) are chamfered so that the upper horizontal roller (1), lower The horizontal roll (2), the operation side vertical roll (3) and the transmission side vertical roll (4) are combined together to form a combined spherical flat steel rolling hole, and the shape of the combined spherical flat steel rolling hole is two spherical flat steel In the shape of steel combined, the webs of the two bulb flat steels are connected together to form a combined web (6), and the ball ends are respectively located on the same side of the connected web as the left leg (5) and the right leg (7). The invention can roll out the axisymmetric combined spherical flat steel, and has the characteristics of high rolling precision, significantly increased rolling batch size and less roll consumption.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a universal rolling device and rolling method for bulb flat steel. Background technique [0002] Bulb flat steel is composed of flat web and spherical ball head. It is a special shaped steel. It is widely used in the fields of ships, bridges and machinery for structural reinforcement. In recent years, with the rapid development of shipbuilding industry, spherical The application of flat steel in the shipbuilding industry is becoming more and more extensive, and the amount of application is also increasing. It has gradually become the second largest steel material for shipbuilding steel except steel plates. At present, the commonly used rolling process is to use a rectangular billet to form a plurality of cutting holes, preformed holes and forming holes, and finally roll it into a standard bulbous flat steel shape. This process is suitable for the production of small steel r...

AI Technical Summary

Problems solved by technology

This invention is similar to the Chinese patent with the publication number CN101190442A, but there is a depression at the connection position of the two bulbous flat steel webs, and the thickness of the depression is smaller than the thickness of the webs, so that the division is easier

This patent also has the problem that the pass wears fast, can only be produced in small batches, and consumes a lot of rolls.

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