Method for electroforming Co-Ni alloy coating on copper plate for continuous casting crystallizer

Abstract

The invention discloses a method for electroforming a Co-Ni alloy coating on a copper plate for a continuous casting crystallizer. The method comprises the steps of polishing, oil removing, water scrubbing, back engraving and Co-Ni electroforming. By adopting the method, the electroformed layer is exquisite, the coating is high in hardness and better in hot hardness, and because the coating is high in hardness and good in hot hardness, the abrasion resistance of the copper plate at high temperature is greatly improved, and the steel loading capacity of the copper plate can reach 0.15-0.20 million tons. Besides, the electroforming solution is good in dispersibility, so that the coating is strong in covering capacity and good in leveling performance. Moreover, the copper alloy electrolysis etching solution is an alkalescent solution, and the surface of a chromium-zirconium-copper alloy part can obtain sand-like pearly luster with a uniform color through anode electrolysis etching, so that the bonding force of the coating is improved, the electroformed layer can not generate dross easily, the electroformed layers on high and low areas are relatively uniform, machining wastes of the coating are reduced, and the utilization ratio of raw materials is improved. The method is suitable for electroforming the Co-Ni alloy coating on the copper plate for the continuous casting crystallizer.

Description

technical field [0001] The invention belongs to an electroplating process, and relates to an electroforming method for Co-Ni alloy coating on a copper plate used in a continuous casting crystallizer. Background technique [0002] In the past, the more common electroplating layers applied to the copper plate and copper tube electroforming of continuous casting machines are: Ni-Co alloy coating, Cr coating, Ni-Fe coating, etc., among which the mainstream is Ni-Co alloy coating, and the general process flow is basically The same, the difference lies in the different formulations of the electroplating process. These processes are now quite mature, and the performance of the coating is stable. When the continuous casting machine is used, the Ni-Co alloy coating is the best steel passing amount, which can reach more than 100,000 tons. However, the problems with the Ni-Co electroforming process are: [0003] 1. Since the time required for electroforming is generally relatively lon...

AI Technical Summary

Problems solved by technology

However, the problems with the Ni-Co electroforming process are:

[0003]1. Since the time required for electroforming is generally relatively long (the shortest is 70 hours), the plating layer crystallization is relatively coarse during electroforming, and there are many nodules. The amount is large, resulting in a waste of raw materials;