Introduction of Titanium Anode in Electroplating Industry and Its Application

In the electroplating industry, the metal coating dissolved in the electrolyte is plated on the metal substrate as the negative electrode, while the anode is used as the positive electrode, forming a complete current transmission cycle. The chemical reaction that occurs simultaneously with electroplating in the plating tank is the deposition of oxygen on the anode surface and the non-inert anode, such as graphite. Compared with graphite anodes, titanium anodes have the advantage of maintaining a stable distance between the positive and negative electrodes within their service life. Graphite anodes gradually dissolve during use, leading to increased electrode spacing. Inert titanium anodes can ensure stable voltage and product quality. Due to the catalytic properties of noble metal elements such as platinum, the exchange current density value on the surface of the electrode is large, and the overpotential of oxygen evolution is low. Moreover, a fine structure of oxide film is formed on the titanium surface using a special process, obtaining a large active surface area per unit electrode area. Therefore, titanium anodes are particularly suitable for high-speed, high-current density electroplating production. In addition to titanium anodes and graphite lead anodes, they can also be used in this field. However, when lead anodes dissolve, their reactants will have a negative impact on the environment. This problem can be avoided by using titanium anodes. The working voltage of titanium anodes is lower, which can also save energy.

Another advantage of using titanium anodes is the ability to reuse the titanium substrate once the titanium anode coating reaches the end of its service life. Anodized aluminum foil is a common material used in the offset printing industry. The working principle and electroplating process are similar - a thin layer of metal is applied to the surface of the base metal. By placing aluminum in an anode state, the surface of the aluminum oxidizes. After the anodization and oxidation process, the aluminum surface can better adhere to the photosensitive coating used in the offset printing industry.

Anodes are used in electroplating a variety of different substrates, from small-scale jewelry production to large-scale continuous electroplating of steel sheets. The diversity of the company's anode products helps to achieve the diversification of electroplating substrates. The company's mechanical processing department and carefully selected suppliers enable the company to produce a wide range of anode products with diverse shapes and applications.

Advantages:

1. Low tank voltage and low energy consumption due to its low initial voltage, i.e. low overvoltage of the anode.

2. Small rate of electrode consumption and stable size due to high stability of the anode.

3. Good corrosion resistance of the electrode and low anode immersion in the electrolyte, which helps to keep the electrolyte clean and the coating reliable.

4. The new materials and structure of titanium anodes greatly reduce their weight and facilitate daily operation.

5. Long service life and reusable substrate, which saves costs.

6. The overpotential of oxygen evolution is about 0.5V lower than that of lead alloy insoluble anodes, which reduces the tank voltage and energy consumption.

Applications include electroplating of zinc-coated steel sheets, precious metal electroplating such as gold, silver, and palladium plating, hard chrome plating, nickel plating, tin plating, copper plating, and production and post-treatment of copper foils used in liquid crystal displays.