Universal rolling device of ball flat steel and rolling method

Abstract

The invention discloses an universal rolling device of ball flat steel and a rolling method. The universal rolling device comprises an universal rolling mill unit; the universal rolling mill unit consists of 3-6 universal rolling mills; any universal rolling mill is provided with an upper horizontal roller (1), a lower horizontal roller (2), an operation side vertical roller (3) and a transmissionside vertical roller (4); two ends of the lower horizontal roller (2) are chamfered, so that the upper horizontal roller (1), the lower horizontal roller (2), the operation side vertical roller (3) and the transmission side vertical roller (4) are combined to form a combined ball flat steel rolling hole; the combined ball flat steel rolling hole is in a shape of combining two ball flat steels; web plates of the two ball flat steels are connected to form a combined web plate (6); and bulbs are respectively positioned on the same sides of the connected web plates as a left leg (5) and a right leg (7). The universal rolling device can roll axisymmetric combined ball flat steels, and has the characteristics of high rolling precision, prominent improvement of the rolling batches and low rollerconsumption.

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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