Water treatment method for continuous casting machine and plate produced by the method

Abstract

The invention discloses a continuous casting machine water treatment method and a panel prepared by the method, which belong to the technical field of casting blank panel processing. The invention hasthe technical points that the continuous casting machine water treatment method comprises multiple heat exchangers used by a continuous casting machine, a cooling unit for continuous casting machinewater, a collecting unit, a purifying unit, a water supplying unit and a controller; the panel prepared by the method is prepared from main alloying elements in chemical components in percentage by mass: 0.78 to 0.82 percent of carbon, 0.15 to 0.25 percent of silicon, 0.70 to 0.80 percent of manganese, less than or equal to 0.025 percent of phosphorus, less than or equal to 0.025 percent of sulfur, 0.30 to 0.35 percent of chromium, 0.20 to 0.25 percent of molybdenum, less than or equal to 0.20 percent of nickel, less than or equal to 0.20 percent of nickel, 0.04 to 0.05 percent of niobium, 0.02 to 0.05 percent of titanium, and less than 0.20 percent of copper; and the method comprises the preparation process flows of: converting, LF refining, continuously casting, heating for rolling, quenching and tempering, spinning, reeling, cutting to length, collecting, weighing, bundling, listing, storing, and obtaining a panel finished product. According to the continuous casting machine water treatment method and the panel prepared by the method provided by the invention, water is saved, the utilization ratio of industrial circulate water is improved, the environment is protected at the same time, and the continuous casting efficiency and the continuous casting quality are improved.

Description

technical field [0001] The invention belongs to the technical field of billet plate processing, and more specifically relates to a continuous casting machine water treatment method and the plate produced by the method. Background technique [0002] With the continuous development of modern mechanical equipment and manufacturing technology, more and more stringent requirements are put forward for the performance and quality of wire plate steel. At present, the rapid development and wide application of continuous casting technology require and promote the rapid development of continuous casting water treatment technology. Water treatment technology has become an extremely important part of continuous casting production, and it will directly affect the quality of continuous casting products. Improvement, product development and service life of the continuous casting machine. [0003] The common continuous casting process flow is as follows: open the sliding nozzle at the botto...

AI Technical Summary

Problems solved by technology

For example, in a large slab continuous casting machine, the casting speed of the slab is below 2m / min, which is mainly limited by the cooling speed of the molten steel. The molten steel must have a sufficient thickness of molten steel to cool and solidify on the surface through the crystallizer to form a slab with a liquid core. For the slab shell, if the cooling effect is not good, the casting speed has to be reduced, and the output of the slab will also decrease. The poor cooling effect may directly affect the quality of the slab, such as slab deformation, bulging and cracks

In addition, if the water supply is insufficient or the water supply is interrupted momentarily, it will directly threaten the safety of the continuous casting machine

When casting steel, if the water supply is interrupted for 6-8 seconds, it will lead to a vicious accident of machine crash and death.

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