High-drawing speed continuous casting machine crystallizer copper plate electroplating process

Abstract

The invention provides a high-drawing speed continuous casting machine crystallizer copper plate electroplating process. The process comprises the steps of a), performing electroplating pretreatment of a copper plate base body; b), bonding the lower portion of a copper plate firmly by using insulating tapes and placing the copper plate in a electrolyzer; c), placing a positive electrode in an electroplating tank, and injecting high-temperature coating resistant electroplate liquid into the tank; d), switching on the power supply and starting electroplating; e), bonding the upper portion of the copper plate firmly by using the insulating tapes, placing the lower portion of the copper plate to the electrolyzer after pretreatment; f), placing the positive electrode into the electroplating tank, and injecting wear-resistant coating electroplate liquid; g), switching on the power supply and starting electroplating; and h), after the electroplating, performing electroplating aftertreatment of the copper plate. According to the process, twice electroplating of the crystallizer copper plate is performed, the upper portion and the lower portion of the copper plate are electroplated with different coatings respectively, the upper surface is provided with a high temperature-resistant coating, and the lower surface is provided with an anti-wear coating. The service life of the copper plate is prolonged, the usage times of the crystallizer copper plate are increased, and the maintenance costs and the maintenance load are reduced.

Description

technical field [0001] The invention belongs to the technical field of electroplating, and in particular relates to an electroplating process for a copper plate of a crystallizer of a high-speed continuous casting machine. Background technique [0002] In the continuous casting process, the upper part of the slab is in a molten state and the temperature is high. It is required that the thermal stress of the copper plate coating is small, the toughness is high, the hardness is low, and the thermal cracking resistance is high. The lower part of the slab has already solidified at a lower temperature. The friction of the copper plate is large, and the coating of the copper plate is required to have high hardness and wear resistance. However, we usually use the method of electroplating a single coating on the copper plate to prolong the service life of the copper plate, which often cannot solve the above problems at the same time, and causes the crystallizer copper plate to easi...

AI Technical Summary

Problems solved by technology

However, during the use of the high-speed continuous casting mold, the conventional coating wears a lot, and is heat-resistant and prone to fatigue, causing unplanned off-line of the copper plate, increasing the number of repairs of the copper plate of the mold, affecting the service life, and disrupting the normal production of the continuous casting machine The rhythm increases the abnormal downtime, which greatly reduces the operation rate of the continuous casting machine and the quality and output of the continuous casting slab, seriously restricts the normal operation of production, and seriously causes a steel breakout accident

Although some high-tech has come into being, the investment is quite large, the cost is too high, and the control of process conditions is demanding, which has not really achieved the purpose of reducing costs and increasing efficiency on the premise of ensuring product quality.

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