Spray/ Dip Treatment
Spray/dip pre-treatment is a crucial process in surface preparation before applying coatings like paint or powder. It involves cleaning, conditioning, and converting the metal surface to ensure optimal adhesion and corrosion resistance of the subsequent coating.
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Both spray and dip pre-treatment involve similar stages but differ in application methods.
Typical stages include:
Degreasing: Removing oils, grease, and other contaminants from the surface.
Alkaline cleaning: Removing rust, scale, and other inorganic matter.
Rinsing: Removing chemicals from the previous stage.
Conversion coating: Forming a protective layer on the metal surface to improve adhesion.
Passivation: Sealing the conversion coating to prevent further oxidation.
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Chemicals are sprayed onto the workpiece using nozzles. Often used for high-volume production due to efficiency. Requires careful control of spray parameters for even coverage.
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Workpieces are immersed in chemical tanks. Suitable for complex shapes and large components. Can be slower than spray pre-treatment but ensures complete coverage.
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Automotive
Trucks and Buses
Aerospace
Construction
White Goods
General Engineering
We are here to assist you in selecting the optimal spray or dip pre-treatment solution for your specific needs.
Contact us today to discuss your project requirements and receive a customised quote.