USAGE
ZINC PRIMER POWDER COATING
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Zinc Primer Powder Coating
(Characteristic)
• Large amount of heat resistant zinc plating is applied to the area to prevent long-term rust and corrosion.
• Shows superior anti-corrosive power even on already corroded metal surfaces and harsh environments like high salinity.
• High-purity fine grained zinc particles can be sprayed uniformly with excellent adhesion and has the characteristic to prevent rust.
(Usage)
• Add anti-corrosive treatment before the final finish to industrial equipment and machinery.
• For structures with concerns for corrosion caused by salt, such as ships and shore protection structures.
• Protection of welding, drilling, and cutting sites and zinc plates
• Protection of car muffler and exhaust system
(How to use)
• Remove all rust, dust, oil and etc completely and paint
What is Zinc Primer Powder Coating!
1. Zinc-rich: concept of belonging to epoxy zinc paint, it represents that mzc (metallic zinc content) level is above certain level
2. Inorganic zinc: Inorganic zinc coating is compatible with epoxies, phenolics, acrylics, silicones, and many other coatings.
Inorganic Zinc coating when applied to blasted steel provides excellent corrosion protection, weathering protection, and very
good resistance to salt water and solvents.
3. Zinc rich primers are used to protect steel surfaces from corrosion. Unlike regular paints or epoxies which resist corrosio
by forming an impermeable barrier between the metal and atmospheric moisture, zinc rich primers provide corrosion
protection by electrical means. The zinc and the steel for a tiny electrical - cathodic cell that protects the steel at the expense
of the zinc. The zinc primer also provides a little ‘barrier' protection as well.
4. Some types of zinc rich primers are used as a stand alone coating, but often they are topcoated with paint or epoxy (many
industrial coating specifications call for a zinc primer, epoxy intermediate coat and a urethane topcoat). A zinc primer under
a topcoat of epoxy or urethane paint provides a backup or secondary method of protecting the steel from corrosion.
Sandblasting
Pre-treatment for casting for machine tool, large forgings, steel fabrications pressings, radiators, bends & valves, corner castings, heat treatment products, manholes, shipping products, panels, farming tools, transformers, heavy construction products, etc.
For effective short work and painting various castings, scale removal operation of strong foreign substances attached to the surface of cast steel and machine parts is implemented. As an appropriate stage before painting, fully remove dirt and surface roughness on the surface to promoting stable adhesion to the smooth surface.
Sanding
?Sanding is used by sanding the surface with a sand paper in order to achieve the goal set for painting and the function is as followed.
1. Remove metal defects: a defect that occurs when the body material is assembled, indentation, tool marks, grinding marks,
etc paint, coating, etc can be identified with the naked eye can cause paint defects. Therefore sanding the defect removes
or reduces the paint defect.
2. Remove paint defects: looking at the surface after E.D, surface, many faulty marks can be seen such as cratering, pin-hole,
run, oil, dirt, dust, and electrodeposition. Sanding removes these faulty marks.
3. Gives smoothness to the film: when zoomed in on the surface, slight bend is formed due to the size of pigment particles in
paint and orange peel effect. Sanding gives the coarse surface smooth film.
4. Improve adhesion between layers: sanding gives smooth surface to a coarse area and at the same time make fine
unevenness on the surface, increasing the surface area. Therefore it improves interlayer adhesion.
Sand blasting material
   
Painting Process
1. To remove the oil and impurities on the object, conduct 5 stage washer and pre bake 2 times.
2. Depending on the object being painted, conduct sandblasting and putty, sanding separately.
3. Conducting coating (epoxy, polyurethane, polyester, and mixture)
4. Dry paint (check drying temperature and time)
5. After releasing from the bake oven, inspect its state and conduct coating thickness test.
Pretreatment is important for if the surface is oily or dirty, the paint will not adhere correctly and rust, or peeling of paint can happen.
Rough primer painting is used to prevent rust and to increase adhesion. Various types of paint can be selected depending on the type of surface.
The putty is attached to cover the welding area and cracks in the connecting area to smooth the surface. Use 500°C heat resistance putty and after drying use water polishing or sand polishing to finish the job.