Specification on Cataphoresis Treatment

 Metal surfaces treated with Cataphoresis get a high resistance to atmospheric agents. Being an immersion treatment combined with electric energy, due to electro – deposit, gives a very high resistance to corrosion to the most inaccessible parts of the products such as housings, deep bends and couplings, contrary to traditional spray application methods. Cataphoresis treatment is widely used in various fields – automotive, tractors, air-conditioning, heating and industry and domestic appliances.

Definition

Electrophoretic deposition (EPD), is a term for a broad range of industrial processes which includes Electrocoating, cathodic electrodeposition, anodic electrodeposition,both included in the electrophoretic coating, or electrophoretic painting.

A characteristic feature of this process is that colloidal particles suspended in a liquid medium migrate under the influence of an electric field (electrophoresis) and are deposited onto an electrode. All colloidal particles that can be used to form stable suspensions and that can carry a charge can be used in electrophoretic deposition. This includes materials such as polymers, pigments, dyes and metals.

The process is useful for applying materials to any electrically conductive surface. The materials which are being deposited are the major determining factor in the actual processing conditions and equipment which may be used.

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Uses

This process is industrially used for applying coatings to metal fabricated products. It has been widely used to coat automobile bodies and parts, tractors and heavy equipment, electrical switch gear, appliances, metal furniture, beverage containers, fasteners, and many other industrial products.

EPD processed have a number of advantages which have made such methods widely used:

1. The process applies coatings which generally have a very uniform coating thickness without porosity.
2. Complex fabricated objects can easily be coated, both inside cavities as well as on the outside surfaces.
3. Relatively high speed of coating Relatively high purity
4. Applicability to wide range of materials (metals an polymers)
5. Easy control of the coating composition.
6. The process is normally automated and requires less human labor than other coating processes.
7. The aqueous process which is commonly used has less risk of fire relative to the solvent-borne coatings that they have replaced.
8. Modern electrophoretic paint products are significantly more environmentally friendly than many other painting technologies.
9. Resistance against physical chemical aggression
10. Greatly reduced the quantity of waste material

The EcoHPC process is a surface treatment capable of giving the supports for filter bags a greater resistance to corrosion than ever before. CleanAir’s experience in this type of process comes from having been the first company to introduce the electroplating treatment into its processing cycle over three decades ago, creating an internal productive division fully dedicated to this type of processing.

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