Electroplating process is to use the principle of electrolysis in some metal surface plated with other metals or alloys thin layer process, is the use of electrolysis to make the surface of the metal or other material parts attached to a layer of metal film process so as to play a role in preventing oxidation of the metal to improve wear resistance, electrical conductivity, reflective, corrosion resistance and enhance the role of the aesthetic and so on. Platinum plated titanium mesh production line is for the anode to take the subdivided into multiple anode plates, by adjusting the current of each anode plate to evenly distribute the current density of the cathode, so as to solve the problem of unevenness of the plating layer.
Material: TA1 or TA2 grade pure titanium is usually used, with a purity of over 99.7%.
Shape: Common shapes include mesh, plate, rod, wire and tube, which can be selected according to actual production needs.
Coating Parameters
Coating Thickness: The thickness of the standard platinum layer is 0.2-5µm, and under higher requirements, the thickness of the platinum layer can reach 20µm. Different production processes and application scenarios have different requirements for coating thickness. For example, the thickness of the electrode coating prepared by physical vapor deposition (PVD) method is generally 0.5-3 microns.
Coating Purity: The coating material is usually platinum with a purity of 99.99%.
Thickness Uniformity: When using the electroplating process, the coating uniformity is relatively good. For example, an enterprise can control the coating thickness deviation within ±0.1 micron through the electroplating process.
Electroplating Process Parameters
Electrolyte Composition: For example, in the electroforming process, the platinum content in the electrolyte is generally 20.0±0.3g/L, and ammonia water is used to complex platinum ions to form a stable complex system.
Temperature: The temperature of the electroforming process is generally controlled at 50±2℃.
Current Density: The current density should not exceed 50A/dm²; below this value, the wear of the platinum layer is very small. The optimal current density varies with different platinum plating processes and electrolyte compositions. For example, in the electroforming process, the optimal current density is 2-3A/dm².
Equipment Operation Parameters
Power Supply Voltage and Current: The power supply provides stable current and voltage for the electroplating process. An adjustable DC power supply is usually used, and the adjustment range of voltage and current needs to be determined according to the specific platinum plating process and workpiece size.
Cleaning Water Pressure: In the cleaning process, the pressure of the high-pressure water jet is generally 10-30MPa, which is used to physically remove large-grained welding slag, spatter, etc.
Drying Temperature and Time: The temperature and time of drying equipment such as hot air circulation drying oven need to be adjusted according to the material of the workpiece and coating requirements. Generally, the temperature is between 50-150℃, and the time depends on the drying condition of the workpiece.
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