PRETREATMENT:
Pretreatment way: Spray type (like picture) and immersion.
Pretreatment is a very important process in powder coating, If a strict spraying quality is required.
In order to remove oil, dirt, rust on the surface of the workpiece and generate a layer of corrosion in workpiece surface and increases the "phosphate layer" of spraying coating adhesion.
The main process steps: Oil removal, rust removal, phosphating, passivation. Artifacts after prior treatment not only surface without oil, rust, dust, and generated on the surface layer of the original silver luster evenly and coarse gray phosphating film is not easy to rust, both can rust and can increase the coating layer adhesion.
Related equipment: Pretreatment tank (concrete tank, before the number is equal to processing);
Related materials (chemicals), sulfuric acid, hydrochloric acid, soda ash Na2CO3 (), acid agent, phosphating solution, the passivation solution
Hangzhou Huaxiang Coating Equipment Co., Ltd. is a professional company about production, processing and sales of surface coating engineering machinery.
Which is located at the beautiful tourist city - hangzhou, communication is convenient, the geographical position is extremely superior. Company undertake large-scale coating production line manufacture. At present, company have advanced coating equipment design and manufacturing technology, and combine with the feature of coating industry, professional production of various kinds of coating equipment, pretreatment equipment, baking equipment and related electrostatic powder coating machine, spray powder for powder (paint) gun, fluidized unit, automatic coating equipment, dust-cleaning equipment, etc. Company's products have been widely used in the automotive, home appliances, steel furniture, electronic communications, engineering machinery, Marine areas project etc.
Company has always insist on the quality strives for credibility, credibility strives for marketing. Company has more than 20 years of industry experience and strong technical support and top after-sales service. We provide the top customer service in pre-sale and after-sale service in equipment design, manufacture, installation, commissioning and technical training, maintenance. We sincerely hope cooperation with friends both at home and abroad, and jointly create a new era of powder coating industry.
