1. Application areas: zinc electroplating, precious metal electroplating (including gold, silver, palladium, etc.); hard chromium electroplating; nickel electroplating; tin electroplating (steel plate tin plating).
2. Coating type: titanium-based ruthenium-iridium, titanium-based iridium-tantalum, titanium-based platinum.
3. Compared with the superiority of lead anode for conventional electroplating
(1) The tank voltage is low, and the energy consumption is small.
(2) The rate of electrode loss is small and the size is stable.
(3) The electrode has good corrosion resistance, insoluble and does not pollute the bath, making the performance of the coating more reliable.
(4) Titanium anode adopts new material and structure, which greatly reduces its weight and facilitates daily operation.
(5) Long service life, and the matrix can be reused, saving cost.
(6) The oxygen evolution overpotential is about 0.5V lower than that of the lead alloy insoluble anode, which reduces the cell voltage and reduces energy consumption.
4· Product use background and introduction: In the field of electroplating applications, the required coating metal is dissolved in the electrolyte, the plated metal substrate is used as the negative electrode, and the anode is used as the positive electrode, which forms a complete current transmission cycle. The chemical reaction that occurs at the same time as the electroplating in the electroplating bath is to release oxygen on the surface of the anode.
“Compared with non-inert anodes such as graphite, the advantage of titanium anodes is that they can maintain a stable distance between the positive electrode and the negative electrode (the distance between the electrodes) within the service life. Graphite anodes will gradually dissolve during use, leading to an increase in the distance between electrodes, while inert titanium anodes can ensure stable voltage and product quality. Due to the catalytic properties of platinum group elements, the exchange current density on the electrode surface is large, and the overpotential of oxygen evolution is low. A special process is used to form a fine-structured oxide film on the titanium surface, which can achieve a great value per unit electrode area. The active surface area is therefore particularly suitable for high-speed and high-current density electroplating production.
In addition to titanium anodes and graphite, lead anodes can also be used in this field. However, when the lead anode dissolves, its reactants have a negative impact on the environment. These problems can be avoided if titanium anodes are used. The oxygen evolution titanium anode has a lower working voltage, which can also save energy.
“Another advantage of using titanium anodes is that the titanium matrix can be reused. When the life of the titanium anode coating reaches its useful life, anodized aluminum foil is a material commonly used in the lithographic printing industry. Its working principle is the same as the electroplating process, a very thin layer of metal is coated on the surface of the base metal. By placing aluminum in an anode state, the surface of aluminum will oxidize. After the aluminum anodization (oxidation) process, the surface of aluminum can better bond with the photosensitive coating required in the lithographic printing industry.
Our company mainly produces all kinds of titanium electrodes, including platinum titanium electrodes, iridium-based titanium electrodes, ruthenium-based titanium electrodes, precious metal coating electrode groups and other main products.
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