Mold inner surface electroplating production line and electroplating method

Abstract

The invention discloses an electroplating production line for the inner surface of a crystallizer, which comprises a washing section, an electroplating section, a hoisting device and an electrolyte circulation supply system. The electroplating section is provided with a crystallizer fixed base, a tubular crystallizer and an anode titanium basket. The fixed base of the crystallizer is provided with an electrolyte liquid inlet pipe, a sealing gasket and an anode lead-out device. The anode titanium basket is arranged on the base, installed vertically and provided with two upper and lower electrode lead-out ends. The crystallizer is vertically arranged on the gasket on the base, and is sheathed on the periphery of the anode titanium basket. The upper side of the crystallizer is provided with a sealing hanging basket and a sealing gasket, the sealing hanging basket is provided with a liquid outlet pipe, the sealing hanging basket is provided with a mechanical pressing device, and the sealing hanging basket is compressed and sealed with the upper end of the crystallizer through the sealing gasket. The electroplating cathode is electrically connected to the crystallizer by pressing. The hoisting device is provided with a crane and a workpiece fixture. The washing section includes a washing liquid washing tank, an acid washing tank, a clean water washing tank, and a pure water washing tank.

Description

technical field [0001] The invention relates to an electroplating production line equipment, in particular to an electroplating production line equipment used for the inner surface of a tubular body, which is mainly applied to the inner surface treatment process of a crystallizer used in steelmaking. [0002] The present invention also relates to an electroplating method for the above-mentioned electroplating production line equipment. Background technique [0003] In the steelmaking process, copper crystallizers are widely used to make steel billets. Existing iron and steel production enterprises use crystallizers to form steel billets in the process from molten steel to steel billets. The general structure of the crystallizer is a square copper tube, and the inner wall of the copper tube is plated with chromium or nickel-cobalt alloy. When the molten steel from the melting furnace is introduced into the crystallizer, it will solidify into a square billet inside. In order...

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Problems solved by technology

There are several shortcomings in this method: first, it is labor-intensive, and at least two people are required to coat the copper tube surface of each crystallizer before electroplating, and the labor intensity of the workers is high and time-consuming; second, the coated film In the process of handling and hoisting, it is easy to be damaged due to bumping. The plating solution penetrates into the film and causes the outer surface to be plated, which wastes electrolyte and increases power consumption. The concentration of the bath solution is not easy to control; the sixth is that the electroplating solution is wasteful, which has a great impact on environmental pollution and personnel health; the seventh is that the current, time, temperature, etc. are not easy to control

However, there are still the following defects that are difficult to overcome: first, because of manual operation, the upper and lower racks before and after the electroplating of the crystallizer are all carried by workers, and the labor intensity of the workers is still high; the second is the sealing method, which is tightened by the tension of the bolts at the upper and lower ends of the mold The upper and lower cover plates, the upper and lower cover plates may be unbalanced in force, resulting in poor sealing, resulting in the omission of the electroplating solution, which cannot realize clean production, a large waste of the plating solution, and great pollution to the environment; the third is that the internal plating method is that the anode is installed in the copper tube , and one end of the anode is connected to electricity, and the other end is not connected to electricity. Due to the existence of potential difference, the thickness of the coating on the upper and lower ends of the workpiece after plating is quite different. service life

[0013] 6. The crystallizer is manually installed before and after electroplating, which is labor-intensive

[0014] 7. The concentration of the electroplating solution cannot be controlled, the addition is not timely and the addition metering cannot be controlled

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