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Thermosetting powder coating and thermoplastic powder coating
Powder coating is a type of coating that is applied as a free-flowing, dry powder. The main difference between a conventional liquid paint and a powder coating is that the powder coating does not require a solvent to keep the binder and filler parts in a liquid suspension form. The coating is typically applied electrostatically and is then cured under heat to allow it to flow and form a “skin”.They are applied as a dry material and they contain veryRead More …
Methods are used to capture overspray during powder coating
Three basic methods are used to capture over sprayed powder coating powder:Cascade (also known as a water wash),Baffle, and Media filtration. Many modern high volume spray booths incorporate one or more of these methods of source capture in an effort to improve overall removal efficiency. One of the most common combination systems, is a cascade style booth, with multi-stage media filtration, prior to the exhaust stack, or prior to a VOC control technology like an RTO (regenerative thermal oxidizer). Anyone that looks behindRead More …
What is Manganese phosphate coating
Manganese phosphate coating has the highest hardness and superior corrosion and wear resistances of general phosphate coatings. Manganese phosphating is extensively employed to improve the sliding properties of engine, gear, and power transmission systems. The use of manganese phosphated coatings for improved corrosion resistance can be found in virtually all branches of the metal working-industry. Typical examples mentioned here include motor vehicle components in brake and clutch assemblies, engine components, leaf or coil springs, drill bits, screws, nuts and bolts,Read More …
Chromate coating for aluminium surface
Aluminium and aluminium alloys are treated by a corrosion resistant conversion coating that is called “chromate coating” or “chromating”. General method is to clean the aluminium surface and then apply an acidic chromium composition on that clean surface. Chromium conversion coatings are highly corrosion resistant and provide excellent retention of subsequent coatings. Different type of subsequent coatings can be applied to the chromate conversion coating to produce an acceptable surface. What we call as phosphating to steel an iron isRead More …
Zinc phosphate and its applications
Generally zinc phosphate conversion coating is used to provide long lasting corrosion protection. Almost all automotive industries use this type of conversion coating. It is suitable for the products come against hard weather conditions. Coating quality is better than iron phosphate coating. It forms 2 – 5 gr/m² coating on the metal surface when used as under paint. Application, set up and control of this process are more difficult than other methods and can be applied by immersion or spray.Read More …
What is Zinc Phosphate Coatings
Zinc phosphate coating is preffered in case of requirement of higher corrosion resistance than iron phosphate. It can be used as base for paintings (especially for thermosetting powder coating), before cold drawing / cold forming of steel and prior application of protective oil / lubrication. This is often the method chosen when long life under corrosive conditions is required. Coating is also very good with zinc phosphate because the crystals form a porous surface which can soak up and mechanicallyRead More …
What is Phosphate coatings
Phosphate coatings are used to increase corrosion resistance and improve powder paint adhesion,and are used on steel parts for corrosion resistance, lubricity, or as a foundation for subsequent coatings or painting.It serves as a conversion coating in which a dilute solution of phosphoric acid and phosphate salts is applied via spraying or immersion and chemically reacts with the surface of the part being coated to form a layer of insoluble, crystalline phosphates.Phosphate conversion coatings can also be used on aluminium,Read More …
How to choose a suitable blast media for abrasive blasting
In selecting a specific media it is helpful to understand some of the materials used and how they compare. Blast media can be made of natural material such as silica, sand, mineral sand, flint, garnet, zircon, and other mineral products. It can be made of some natural byproducts such as walnut shell or corncob. And it can be manufactured of a variety of metal and non-metal compositions such as steel, iron, aluminum oxide, silicon carbide, plastic, wheat starch, and glassRead More …
Abrasive blasting is most often used for preparation of metal surfaces
Abrasive blasting is most often used for preparation of metal surfaces of heavy structural parts, particularly HRS weldments. It is a very good way of removing the encrustations and carbonized oils that are characteristic of this type of product. Blasting operations can be manual or automated and they can be installed as part of a conveyorized powder coating system or as a batch process.The blasting device may be a nozzle type or a centrifugal wheel type. As previously stated, nozzleRead More …
D5 Creation