Flying shear shearing method and device and flying shear device

Abstract

The invention is applicable to the technical field of metal smelting, and provides a flying shear shearing method and device and a flying shear device. The method comprises the steps that a first moment when a pyrometer detects an intermediate billet is obtained, a second moment of a width measurement value which is uploaded by a width gauge and meets a first preset condition is obtained, and a third moment of a rolling force value which is uploaded by a rough rolling horizontal rolling head and meets a second preset condition is obtained; according to a first target moment and the detection moment when the width gauge detects the intermediate billet, a head flying shear set value of a flying shear relative to the intermediate billet is determined, wherein the first target moment is the latest moment in the first moment, the second moment and the third moment; and according to the head flying shear set value and a tail flying shear set value, the intermediate billet is sheared. By means of the flying shear shearing method and device and the flying shear device, the reliability of the flying shear set values of the flying shear can be improved.

Description

technical field [0001] The invention belongs to the technical field of metal smelting, and more specifically relates to a flying shear cutting method, device and flying shear equipment. Background technique [0002] In the hot-rolled plate production process in the steel industry, the heated billet needs to be rolled into an intermediate billet by a rough rolling mill, and then the head and tail of the intermediate billet (hereinafter referred to as flying shears) are used to cut the head and tail of the intermediate billet. The defective part of the tail is cut, and finally the cut intermediate billet is rolled into the preset finished product by the finishing mill. [0003] In the above links, the shearing treatment of the head and tail of the intermediate billet by flying shears is extremely important. If the cutting length of the head and tail of the intermediate billet is too long, it will not only reduce the yield, but also may cause the steel head to fail to fall, re...

AI Technical Summary

Problems solved by technology

If the cutting length of the head and tail of the intermediate billet is too long, it will not only reduce the yield, but also may cause the steel head to fail to fall, resulting in scrap

If the cutting length of the head and tail of the intermediate billet is too short, the defective part will not be completely cut, and the intermediate billet will easily rub against the equipment in the finishing mill, resulting in scrap steel

[0004] At present, the flying shear setting value of the flying shear is usually set by the operator according to the shape of the head and tail of the intermediate billet displayed on the operation interface and personal experience, resulting in low reliability of the flying shear setting value

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