Full-automatic longitudinal and transverse cutting method for waste plate blank

Abstract

The invention relates to a full-automatic longitudinal and transverse cutting method for a waste plate blank. The plate blank is found through an end detection device; the height of cutting guns is automatically adjusted after the thickness of the plate blank is measured by laser; a cutting machine cart travels in the length direction of the plate blank, whether a head edge searching signal exists or not is judged, if the signal continuously exists, the cutting machine cart travels to the designated slotting position, then transverse cutting is conducted, and if the signal disappears, longitudinal cutting is conducted on the plate blank; two cutting machine trolleys are automatically positioned according to cutting requirements; the two cutting guns conduct self-adaptive low-speed preheating on the head of the waste plate blank; longitudinal cutting is conducted by a cutting machine; an end edge searching signal is judged in the cart cutting process, if the signal disappears, one-time longitudinal cutting is stopped; and a PLC judges whether the longitudinal cutting is stopped or not according to the calculated cutting times, if the longitudinal cutting is not stopped, the two cutting trolleys are repositioned according to the judged information to carry out the next longitudinal cutting, and if the longitudinal cutting is stopped, the cutting process of one waste plate blank is ended. The full-automatic longitudinal and transverse cutting method smoothly realizes automatic cutting of waste plate blanks with different sizes and specifications, and the cutting efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of metallurgical engineering, in particular to a fully automatic longitudinal and transverse cutting method for waste slabs. Background technique [0002] The iron and steel industry uses scrap steel as raw material to directly put it into steelmaking furnaces for smelting, which can save the process of mining, ore dressing, coking, ironmaking, etc., and obviously can save a lot of natural resources and energy. Most of my country's iron ore is low-grade ore, and a large amount of high-grade iron ore needs to be imported from abroad. Due to the impact of the epidemic and international relations, the price of iron ore is controlled by others. Therefore, the proportion of steel scrap used in my country's metallurgical industry It is getting bigger and bigger. At present, in the steelmaking metal materials, the proportion of scrap steel to the total steelmaking raw materials has increased from the original 10% to about 35%...

AI Technical Summary

Problems solved by technology

However, the environment of manual processing and cutting of scrap steel is harsh and the efficiency is low. Ordinary flame cutting machines still require a large number of manual workers to participate in the cutting of the cutting machine, which is especially difficult for large-scale scrap steel processing.

[0003] For the processing of waste slabs, most domestic steel mills currently use manual flame cutting torches for cutting, and a small number of them also use gantry-type single-gun cutting machines for cutting, but most of the time is still required for manual intervention. Since the amount of waste slabs to be processed is not large, lower efficiency methods can be used for cutting, but a large number of industrialized cutting is required, and manual participation must be reduced. It is necessary to realize the automation of cutting, liberate a lot of labor, and improve the cutting efficiency of the cutting machine.

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