Powder Coating Application

Let’s start looking at what happens in the space between the spraying gun and part during the electrostatic powder coating application procedure. In Figure 1, the high potential voltage applied to the tip of the gun’s charging electrode creates an electric field (shown by red lines) between the gun and grounded part. This bring about the development of corona discharge. A great amount of free ions generated by the corona discharge fills the space between the gun and the part.Read More …

Ultra-thin powder coating technology is not only an important development direction of powder coatings, but also one of the problems the world is still plagued in painting circles. Powder coatings hardly accomplish ultra-thin coating,that not only greatly limit its application scope ,but also lead to thicker coating (generally 70um above ) . It is an unnecessary waste costs for most applications which do not require thick coating . To solve this worldwide problem to achieve ultra-thin coating ,the experts haveRead More …

How to powder coat : pre-treatment – drying to remove water – spraying – Check – baking – check – Finished. 1.The characteristics of the powder coating can give full play to extend the coating life to break the painted surface first strictly surface pre-treatment. 2.Spray, was painted to be fully grounded in order to increase the efficiency of the powder coating of puffing. 3.The larger surface defects to be painted, coated scratch conductive putty, in order to ensure the formation of the coatingRead More …

Powder coatings curing process in the oven consists of three stages. First,the solid particles are melted,then they combine together ,and finally they form a uniform film or coating over the surface . Maintaining low viscosity of the coating for an adequate time is very significant to have a smooth and even surface. Having decreased during the curing process, viscosity tends to increase as soon as the reaction (gelling )begins. Thus ,reactivity and heat temperature have a significant role in creating aRead More …

LABORATORY EQUIPMENT Equipment necessary for testing the pre-treatment chemicals, rinsing water and final results Tests of pre-treatment chemicals to be performed according to suppliers’ instructions Conductivity measurement gauge for evaluation of final rinse Temperature recorder Coating weight equipment, DIN 50939 or equal Equipment necessary for testing the powder coating Film thickness gauge suitable for use on aluminum (e.g. ISO 2360, DIN 50984) Cross hatch equipment, DIN-EN ISO 2409 – 2mm Bending test equipment, DIN-EN ISO 1519 Indentation test equipment, DIN-ENRead More …

A major advantage of powder coatings over liquid paint systems is the ability to reuse powder that does not adhere to an object (overspray). Air and powder are separated by either a cyclone or a filter system, as illustrated. Powder that is recycled will be recollected in the powder hopper. Particles which are more easily charged adhere themselves to the object whilst the proportion being recycled are of another particle distribution size than that of virgin powder. The relationship betweenRead More …

Powder coating is done by a small handgun, ideal for smaller components and mixed goods. Pre-treatment can be done – as shown- by blast cleaning or any other method suited for the finished product. Curing takes place in a box oven

Electrostatic spraying with ordinary powder spraying techniques, no special requirements. Application is quick and easy, not the problem of coating, a spray can, without increasing the coating process. Can automatically spray gun, the more uniform texture. Gully and concave need to manually fill spray. Powder coating powder construction process should seek to spray to the metal workpiece surface is uniform coating of uniform thickness and suitable. Coating have the following characteristics: Thick coating can be larger uniform fissure effect, clear texture; thinRead More …