Spray coating treatment for die-casting products is a widely used surface treatment method in the die-casting industry, which can provide products with beautiful appearance, good protective performance, and special functions.
Spray treatment is the process of uniformly spraying paint onto the surface of die cast products using a spray gun, forming a layer of coating with specific properties. This process can effectively improve the appearance quality of the product, enhance its corrosion resistance, wear resistance, heat resistance, and insulation properties.
Before spraying treatment, die-casting products need to undergo strict pre-treatment processes. Firstly, cleaning is necessary to remove oil stains, dust, and impurities from the surface of the product. Then phosphating or chroming treatment is carried out to improve the adhesion of the product surface and prepare for the subsequent spraying process.
During the spraying process, it is necessary to select appropriate coatings and spraying process parameters according to the requirements of the product. Common coatings include paint, powder coating, water-based coating, etc. Different coatings have different characteristics and application ranges. For example, paint has good decorative properties and corrosion resistance; Powder coatings have the characteristics of environmental protection, high efficiency, and durability; Water based coatings have the advantages of low VOC emissions, safety and environmental protection.
During the spraying process, it is necessary to strictly control parameters such as the pressure, distance, and movement speed of the spray gun. The changes in these parameters will directly affect the quality and uniformity of the coating. For example, excessive pressure on the spray gun may cause poor atomization of the coating, resulting in rough coating; Excessive distance or proximity of the spray gun may result in uneven coating thickness and other issues.
After spray coating treatment, die-casting products also need to undergo post-treatment processes such as drying, curing, etc. These processes can fully dry and cure the coating, form a strong coating, and improve the performance and service life of the product.
Spray coating treatment for die-casting products is an important surface treatment method that can provide products with beautiful appearance, good protective performance, and special functions. During the spraying process, it is necessary to strictly control the process parameters of each link to ensure the quality and performance of the product.
