Wholesale Zinc Alloy Lamp Connector Die Casting Manufacturers

Surface treatment process for Zinc Alloy Lamp Connector Die Casting plating

In the vast field of manufacturing, Zinc Alloy Lamp Connector Die Casting has gradually become an indispensable key component in the lighting manufacturing industry due to its excellent mechanical properties, good plasticity and relatively low cost. However, the surface of untreated zinc alloy die-casting parts often has problems such as easy oxidation and poor corrosion resistance, which directly affects the service life and market competitiveness of the product. Therefore, electroplating surface treatment, as an efficient and economical solution, is widely used in the manufacturing process of zinc alloy lamp connectors.

1. Basic principles of electroplating surface treatment
Electroplating is a process that uses the principle of electrolysis to plate a layer of other metals or alloys on the metal surface. During the electroplating process, the plated zinc alloy die-casting is used as a cathode and is placed in the electrolyte containing the metal ions to be plated. The function of the DC power supply allows the metal ions in the electrolyte to be reduced and deposited on the cathode surface to form a uniform and dense coating. This coating can significantly improve the appearance quality of zinc alloy die castings and effectively improve its corrosion resistance. , wear resistance and conductivity.

2. Process steps of electroplating surface treatment
Pre-treatment: Pre-treatment is the first and crucial step in electroplating surface treatment. It mainly includes processes such as oil removal, rust removal, and activation. The purpose is to remove oil stains, oxides, and impurities on the surface of die castings and improve surface activity and adhesion. Degreasing usually uses alkaline or acidic cleaning agents to remove oil stains through chemical or physical methods; rust removal uses pickling or mechanical grinding to remove oxides and rust on the surface; activation uses chemical or electrochemical methods to form a surface A thin layer of activation film so that the coating can adhere better to the substrate.
Electroplating: Electroplating is the core link of surface treatment. In the electroplating tank, the plated zinc alloy die-casting part serves as the cathode, and the anode (usually the plate or rod-shaped material to be plated with metal) is connected to the DC power supply through wires. The electroplating solution is formulated according to the type and performance requirements of the required coating. It contains salts, complexing agents, buffers, additives and other ingredients for the metal ions to be plated. By controlling the composition, temperature, current density, plating time and other parameters of the electroplating solution, a uniform and dense coating can be obtained on the surface of the die casting.
Post-processing: After electroplating is completed, a series of post-processing procedures are required to further improve the quality and performance of the coating. These processes include cleaning, passivation, drying and inspection. Cleaning is to remove the electrolyte and impurities remaining on the surface of the coating during the electroplating process; passivation is to form a dense oxide film on the surface of the coating through chemical or electrochemical methods to improve the corrosion resistance and wear resistance of the coating. ; Drying is to dry the cleaned and passivated die-casting parts to prevent moisture residue from causing deterioration of the coating; inspection is to comprehensively evaluate the quality of the coating through visual inspection, thickness measurement, corrosion resistance testing and other methods.

3. Quality control of electroplating surface treatment
The quality control of electroplating surface treatment runs through the entire process. In order to ensure that the quality and performance of the coating meet the requirements, it is necessary to strictly control the composition and concentration of the electroplating solution, temperature, current density, plating time and other process parameters; at the same time, it is also necessary to Strict quality inspection and control are carried out in each process of processing, electroplating and post-processing. Electroplating equipment and tools also need to be maintained and maintained regularly to ensure their normal operation and stable accuracy.

4. Environmental impact and countermeasures of electroplating surface treatment
The electroplating surface treatment process will produce certain waste water, waste gas, waste residue and other pollutants, which will have a certain impact on the environment. In order to reduce these impacts, a series of environmental protection measures need to be taken. For example, use low-toxic and harmless electroplating solutions and additives; strengthen the construction of wastewater treatment facilities to ensure that wastewater is discharged up to standard; collect and process waste gas and waste residue to prevent them from being directly discharged into the environment; and also need to strengthen environmental awareness training for employees. , improve environmental awareness and responsibility.

5. Application advantages of electroplating surface treatment in the manufacturing of zinc alloy lamp connectors
Electroplating can form a uniform and dense coating on the surface of die castings, which can significantly improve the appearance quality and corrosion resistance of the product. Secondly, electroplating can also improve the wear resistance and conductivity of the product and extend its service life. The electroplating process also It has the advantages of high production efficiency and relatively low cost, and can meet the needs of large-scale production.