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Is fluidized bed powder coating a good fit for your products?
There are several questions that need to be asked. First, since fluidized bed powder coating generally applies a thicker coating, can the end part withstand the dimensional changes? Unlike electrostatic coating, fluid bed coating will generally smooth over any small details in the parts, such as embossed serial numbers, metal imperfections, etc. This can be extremely beneficial for parts where Faraday Cage effects are problematic. Welded wire products are good examples. Electrostatic spray has a hard time getting into theRead More …
Brief introduction of fluidized bed powder coating
The fluidized bed powder coating system has three main sections. A top powder hopper where the powder is held, a porous plate which allows air to pass through, and a sealed bottom air chamber. When pressurized air is blown into the air chamber it passes through the plate and causes the powder to float or “fluidize”. This allows the metal part to be coated to be moved through the powder with little resistance. Fluidized bed application is accomplished by preheatingRead More …
Acrylic hybrids combine the acrylic resin with an epoxy binder.
They are somewhat better than a epoxy-polyester / hybrid but still not considered acceptable for outdoor use. The mechanical properties that are characteristic in epoxies are a benefit of these materials and they have much better flexibility than other acrylics. Because of their good appearance, tough surface, exceptional weatherability, and excellent electrostatic application characteristics, acrylics are frequently used for applications on products that have very high quality standards. Appliances, automobiles and other products that require durability and long life inRead More …
Difference between cold rolled steel and hot rolled steel
COLD ROLLED STEEL:The most common of the metals encountered by the jobshop powdercoater, this product is roll formed to a close tolerance and a fine surface finish, suitable for stamping, forming, and moderate drawing operations. This material can be bent flat upon itself without cracking. Good base for phosphate conversion coating. Pretreatment recommendations are Clean, Phosphate, rinse, and seal or deionize rinse. HOT ROLLED STEEL:A low carbon steel suitable for forming, punching, welding, and shallow drawing. Surface has normal millRead More …
What is zinc,zinc casting and zinc plating
ZINC:A bluish-white, metallic chemical element, usually found in combination such as in the zinc rich epoxy primer,used as a protective coating for iron, as a constituent in various alloys, as an electrode in electric batteries, and in the form of salts in medicines. Symbol Zn atomic weight = 65.38 atomic number = 30. Melts at 419.5 degrees C, or approx. 790 degrees F. ZINC CASTING:Zinc in a molten state is poured into a form and allowed to solidify and formRead More …
Production profiling of powder coating limits product liability risks
Risk management is a real concern for every business, and powder coating is no exception. The product liability of providing a poor quality powder coatings finish could range from re-coating a few simple parts to the replacement of all products damaged by underexposure or overexposure to heat (a complete product recall). The only way to totally manage risk is to be in total control. In turn, verification of control can only be certain when measurements are taken by proper testingRead More …
Production Profiling improves sales of powder coating products
Total Quality Management (TQM) and quality driven management systems such as ISO 9000, QS-9000 and Community European (CE) marking have redefined the meaning of quality partnerships. Many powder coaters have begun profiling all of their production runs, not only to reduce their product liability risks and reduce their operating costs, but also to send quality documents along with all of their shipments. This proves quality to their existing customers by helping to ensure their long-term loyalty. Manufacturing companies are sureRead More …
How to select a proper powder for your products
Choice of resin system, hardener, and pigment is just the beginning in selection the properties that one may require of the finish. Control of gloss, smoothness, flow rate, cure rate, ultra violet resistance, chemical resistance, heat resistance, flexibility, adhesion, corrosion resistance, exterior durability, ability to be reclaimed and reused, total first time transfer efficiency, and more, are some of the factors that must be considered when any new material is manufactured. Thermosetting powder coating are classified into five basic chemicalRead More …
Screen your powder before application
Screening of powder coating powder is very important,that will separate out contaminants, insure uniform particle size distribution,and allow the system operator to fine tune the application equipment without puffing or surging for maximum transfer efficiency and finish quality. Actual on-line test results have shown that screened powder will cover much more area than the same material unscreened. The most common reason that powders puff and surge during application is due to the lack of screening. Powders may become compressed inRead More …
General reasons for pin holes in a process of powder coating wheels
You will be experiencing pin holes when you powder coat wheels of cast aluminum . Pin holing can be caused by several different things, in this case I would say that the alloy wheels are porous and the air in the pore is expanding when the parts are heated in the oven. The air then escapes into the powder film when the powder is in the liquid or melted state and as the powder solidifies during the curing process theRead More …
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