The necessity of hardware spraying is mainly reflected in the following aspects:
1. **Surface protection**: Spraying can provide a protective film for hardware products to prevent corrosion and rust and extend the service life of the product.
2. **Aesthetics**: Through spraying, hardware products can obtain a smoother and more uniform surface, improving the appearance quality of the product.
3. **Functionality**: In addition to its decorative function, the spray coating can also provide specific functionality, such as wear resistance, heat resistance, insulation, etc.
4. **Filling defects**: For hardware with surface defects, spraying can effectively fill and cover these defects and improve the overall appearance of the product.
5. **Environmental protection**: Compared with traditional spraying, powder spraying is more environmentally friendly because the powder can be recycled and reused, reducing pollution to the environment.
In addition, color difference control during the spraying process is also very important, which directly affects the appearance quality and market competitiveness of the product. Moreover, with the development of technology, new spraying equipment can provide higher spraying efficiency and quality, reduce material waste, and improve production efficiency.