Method for controlling nail shooting process of continuous casting slab

A technology of process control and continuous casting slabs, which is applied in the field of control of the continuous casting slab single gun nailing measurement process, can solve the problems of parameter control, failure to find the nails, and dangers, etc., to overcome poor accuracy and avoid wasteful, overcoming dangerous effects

CN102717044AActive Publication Date: 2012-10-10ANGANG STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-10-10

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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.
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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...

Examples

Embodiment Construction

[0021] Below by embodiment the present invention will be further described.

[0022] This nailing control method is used when measuring the thickness of solidified slab shell by nailing in continuous casting production.

[0023] Before nailing, the collected parameters related to nailing are substituted into relevant formulas, and after calculation, the nailing time and the time when the nailing slab reaches the cutting point are obtained.

[0024] Relevant parameters of the casting machine: pulling speed V=1m / min, distance L from the nailing point to the initial point of the cutting machine 0 =26.7m, billet cut to length l 0 =7m, cutting gap l 1 = 0.01m and the cutting allowance of the nail blank sample l 2 = 0.15m. After substituting the parameters, it is calculated:

[0025] (1) Determine the nailing time

[0026] n = | 26.7 7 | + 1 = 4 piece ...