Method for controlling nail shooting process of continuous casting slab

Abstract

The invention provides a method for controlling a nail shooting process of a continuous casting slab. The method comprises the following steps: 1) determining a nail shooting position and fixing a nail shooting gun on the nail shooting position; 2) measuring a distance L0 from the nail shooting position to an initial point where a casting slab is cut; 3) collecting relative technological parameters of a casting machine including a casting speed V, a cutting fixed length l0, a cutting slit l1 and a cutting balance l2; 4) calculating and determining a nail shooting time through formula (1) and formula (2); 5) calculating a time t needed by the casting slab where shooting nail is for getting to a zero cutting position through formula (3); 6) calculating a cutting length l3 of a nail shooting slab sample through formula (4); 7) and shooting nails when a cutting machine have passed a distance of [delta]L from the zero cutting point, and then cutting the nail shooting slab sample according to the length 13 when the time reaches t. The method in the invention is simple and easy to operate, a fixed length position where a casting slab of continuous casting nail shooting is cut in a process of measuring a slab shell can be accurately determined, waste generated from a short length of the casting slab can be effectively avoided, and problems of poor accuracy and danger existence from manual marking of the nail shooting position can be overcome.

Description

technical field [0001] The invention belongs to the technical field of continuous casting in steelmaking production, and in particular relates to a control method for the measurement process of continuous casting slab single-shot nailing (or horizontal multi-gun simultaneous nailing) measurement process. Background technique [0002] Many metallurgical enterprises have systematically evaluated the comprehensive performance of casting machines, casting steel types, and processes through the actual measurement of the thickness of the solidified slab shell, especially the experimental research on the thickness change of the slab shell during the solidification process. Slab thickness measurement technology has successively developed methods such as breakout method, isotope tracer method, electromagnetic ultrasonic method, nail shooting method, and numerical simulation method, but the nail shooting method is commonly used at present. [0003] Using the nail shooting method can a...

AI Technical Summary

Problems solved by technology

[0003] Using the nail shooting method can accurately know the change of the shell thickness of the continuous casting solidified slab. Many domestic and foreign steel mills use the nail shooting method to test the thickness of the solidified slab shell, but when using the nail shooting method to test the shell thickness of the slab, Both have the problem of controlling the parameters of the nailing process

If the timing of the nailing is not properly grasped, the billet where the nailing blank is located will be short, or the position of the billet where the nailing is located cannot be found after nailing; Dangerous, and there are shortcomings of poor precision, etc.

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