company news about Analysis of the importance of pre-treatment of spray equipment

Before understanding the spray pre-treatment equipment, let us first understand the spray, spray is the process of metal, furniture, aluminum and other surfaces for treatment, powder coating is a kind of plastic powder, is a solvent-free solid powder coating; It is mainly divided into two categories: thermoplastic powder coatings and thermosetting powder coatings. The coating is made of special resin, pigment, curing agent and other additives, mixed according to a certain proportion, and made by hot extrusion, crushing and screening.

Under normal circumstances, spraying equipment allows spraying products to undergo pre-spraying treatment - dehydration and drying - spraying system - high temperature curing and other processes, which will allow the surface of sprayed products to form a smooth and bright permanent coating to achieve the purpose of decoration and corrosion prevention. Suitable for: metal parts, shelves, cabinets, guardrail, furniture, logistics warehousing and transportation equipment. The following talk about the spray pre-treatment equipment, the purpose of spray pre-treatment is to remove the oil, dust, rust on the surface of the workpiece, and to form an anti-corrosion "phosphating layer" on the surface of the workpiece to improve the adhesion of the spray coating.

Under normal circumstances, spraying equipment allows spraying products to undergo pre-spraying treatment - dehydration and drying - 

Spray pretreatment equipment process flow is: oil removal, rust removal, phosphating, passivation; After pre-treatment, the surface of the workpiece is not only free of oil rust and dust, but also the original silver bright surface has formed a uniform rough, not easy to rust gray phosphating film, which not only prevents rust but also improves the adhesion of the spray layer. 1, spray equipment pretreatment is a very important part, oil removal must be thorough, oil removal is not good, the following process may have problems; 2, immediately after rust removal, the next process, the speed of metal rust is only a few seconds, so we must quickly carry out the next process; 3, spray before the treatment of water, because each washing section must be large, urgent, ruthless, so as to quickly wash the product surface of oil, dust, rust, so that the product surface without stains into the next process.