Method for optimizing double-length shearing of small and medium sized section steel

Abstract

An embodiment of the invention discloses a method for optimizing double-length shearing of small and medium sized section steel. The method comprises steps as follows: obtaining normal double-length L1; calculating the total length of a finished rolled piece, and obtaining the number of times for remaining shearing according to the total length of the rolled piece and the normal double-length L1; obtaining the current remaining length LTOT according to the total length of the rolled piece; judging whether the shearing time is 1; comparing the normal double-length L1 with the current remaining length LTOT when the remaining shearing time is 1; optimizing the current remaining part of the rolled piece when the current remaining length LTOT is smaller than L1; shearing the current remaining time once when the current remaining length LTOT is equal to or larger than L1. With the adoption of the method, the control precision of the double-length shearing of small and medium sized section steel can be greatly improved, the steel stacked on a cooling bed is reduced, and the finished product rate is remarkably increased.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to an optimization method for double-length shearing of small and medium-sized section steel. Background technique [0002] The small and medium section steel rolling line realizes continuous rolling, and the length of the rolled piece after rolling can reach hundreds of meters, or even thousands of meters. The rolled piece needs to be sheared to meet the continuity of production. Double-length cutting is the function of realizing the length division of the rolled piece. According to the length of the finished product, it divides the rolled piece into lengths that are approximately integer multiples of the length of the finished product, and sends it to the cooling bed for cooling, waiting for the finished product to be cut. [0003] In the prior art, when double-length cutting is performed, except for the last section, all other sections are of fixed length, which is an inte...

AI Technical Summary

Problems solved by technology

[0004] However, due to the different lengths of the steel billets rolled by the rolling line, sometimes when the double-length cutting is performed, the last section of the double-length is too long and cannot be completely placed on the cooling bed to cause piles of steel; A piece that is too long or too short will form a large number of waste products, resulting in a reduction in the yield

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