Repairing method of scrapped continuous casting crystallizer copper plate

Abstract

The invention discloses a repairing method of a scrapped continuous casting crystallizer copper plate. The repairing method comprises the steps of (1) pretreatment: carrying out degreasing treatment, mechanical sand blasting scuffing treatment, electrolytic degreasing treatment, ultrasonic degreasing treatment and acid spraying activating treatment on a copper plate base material subjected to machining, so as to obtain a to-be-cast copper plate base material; (2) electroforming solution injection: injecting an electroforming solution into an electroforming tank, adjusting the pH, and heating the electroforming solution till the temperature reaches a set value; and (3) electroforming: putting the to-be-cast copper plate base material adopted as a cathode into the electroforming tank, putting an anode into the electroforming tank, switching on the power, and stopping electroforming till the thickness of a silver-copper alloy plating reaches a set value. According to the repairing method, the crystallizer copper plate base material at the scrapping limit is repaired and reutilized through adopting an easy and feasible preparation method, the obtained crystallizer copper plate is excellent in performance, the service life of the crystallizer copper plate is prolonged through the silver-copper alloy plating, the production cost is improved, and the sustainable development property is high.

Description

technical field [0001] The invention relates to a surface treatment method of continuous casting equipment, in particular to a method for repairing copper plates of scrapped continuous casting crystallizers. Background technique [0002] Continuous casting is the abbreviation of continuous casting. Compared with traditional methods, continuous casting technology has significant advantages such as greatly improving metal yield and billet quality, and saving energy. Continuous casting crystallizer is the core equipment of the whole continuous casting production, its quality will directly affect the quality of cast failure and the operation rate of continuous casting machine. During the whole continuous casting production process, the copper plate of the crystallizer not only bears the scour of high temperature molten steel, but also is rubbed by the billet and mold slag, which makes the surface coating of the copper plate of the mold wear seriously. Under normal circumstances...

AI Technical Summary

Problems solved by technology

The Chinese patent with the application number CN201210449535.8 discloses a method for repairing continuous casting crystallizers by laser-induction composite cladding. , dig out cracks or scratches, activate and electroplate nickel or electroless nickel plating; then, use laser-induction composite cladding special copper-based alloy powder to repair the damaged part of the continuous casting crystallizer, the special copper-based alloy powder used The chemical composition is: Ni7~9wt.%, Sn8~12wt.%, Al5~15wt.%, Si0.8~2%, and the balance is Cu. This invention can improve the cladding efficiency by 1~5 times. , the damaged part of the continuous casting mold is repaired by laser-induction composite cladding, which overcomes the problems of thin thickness, easy peeling and low thermal conductivity of the traditional continuous casting mold repair coating

[0004] The first published patent, the basis of its electroplating is a new continuous casting crystallizer copper plate base material, the second published patent, which realizes the repair of damaged copper plates and then reuses, and the repair method is complicated, and it is realized by laser assistance The process of electroplating will cause a lot of energy waste

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