Trucent products

When metal parts need to be corrosion resistant, a zinc phosphate conversion coating is often applied. The zinc combines with phosphoric acid and the surface metal of the part to form a layer of insoluble crystalline phosphates, which protects the part from corrosion. The zinc phosphate solution is either sprayed on the part, or more commonly, the part is immersed in a zinc phosphate bath. This approach is widely used in the automotive industry and in certain sectors of the appliance and electronics industries. Zinc phosphate baths are also common for electroplated, electrocoated and powder coated parts.

An iron phosphate bath fluid is composed of iron, phosphoric acid, water and an etching compound. These baths are used for applying a conversion coating to metal parts that need to be corrosion resistant. The iron combines with phosphoric acid and the surface metal of the part to form a layer of insoluble crystalline phosphates, which protects the part from corrosion. Iron phosphate coatings are widely used on metals designed for indoor use. The iron phosphate solution is either sprayed on the part, or more commonly, the part is immersed in an iron phosphate bath.

A manganese phosphate bath fluid is composed of manganese, phosphoric acid, water and an etching compound. These baths are used for applying a conversion coating to metal parts (mostly steel and manganese) that are used in oily environments. The manganese combines with phosphoric acid and the surface metal of the part to form a layer of insoluble crystalline phosphates, which prevents galling and provides excellent wear protection. Oil treatment is commonly employed as a post treatment process. Manganese phosphate coatings are widely used on metals designed for automotive and defense industry use. Having a lower coating weight than heavier zinc phosphate coatings, manganese phosphate coatings have excellent oil absorbing abilities that minimize wear on moving metal parts.

A phosphate bath fluid is commonly composed of either iron, manganese or zinc, along with phosphoric acid, water and an etching compound. These phosphate baths are used for applying a conversion coating to metal parts (often aluminum and steel parts). The base material combines with phosphoric acid and the surface metal of the part to form a layer of insoluble crystalline phosphates, which prevents galling and provides excellent wear protection. For paint and powder coatings, a phosphate coating has two main functions. First, the coating provides improved paint and powder coating adhesion since the phosphate crystals act as an organic coating anchoring site. Second, the phosphate layer acts as a corrosion barrier if the organic coating gets scratched.

Companies that paint parts often have to use a paint stripping process to clean their hooks, racks, etc. that received overspray paint during their parts painting process. They need their fixtures to be completely clean and free of all paint, powder coat and e-coat to improve their process speed and keep paint from building up. This lowers their defective part ratio and saves them money. The components being stripped of paint are often soaked in tanks that contain paint stripping fluids, which often include chemicals that help remove the paint coatings. The paint that is removed forms a sludge in these tanks and must be removed on a regular basis.

Companies often need to remove or strip paint and other coatings from parts for various reasons. The components being stripped are often soaked in tanks that contain chemicals. The material that is removed in this stripping process forms a sludge in these tanks and that sludge must be removed on a regular basis. The longer the sludge stays in the chemicals, the less effective the process will become. Filtering / separating and removing the sludge from the chemical stripping fluid is important for the longevity and effectiveness of the chemicals. Also, the cleaner the stripping fluid baths are, the cleaner the parts being soaked will get. Thus, it is critical that the chemical stripping fluid baths are cleaned and purged for proper operation.