By Bob Utech
A consultant to High-Performance Powder Coating examines bills, functionality, and environmental results. The textual content appears to be like at technical advances made in powder coating approaches and kit, and it explains those thoughts for these within the attempting to keep a aggressive side. Powder coating fabrics and their functionality homes are checked out besides electrostatic theories, curing, and ovens. The e-book appears to be like at layout and building facets of the pretreatment washing machine process and explores tracking and protecting pretreatment structures, besides the basics of fending off pretreatment failure. different issues contain gear hoppers and feeders, powder cubicles, functions, working stipulations, and questions of safety. functionality checking out, together with criteria and chemical resistance, are defined. furthermore, troubleshooting techniques whilst a product is off color, off gloss, or shows bad adhesion traits is gifted
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Extra resources for A guide to high-performance powder coating
PVC coatings usually require a suitable primer to be first applied to the substrate. PVC powder coatings can be tricky to apply, but the process provides excellent film-building properties. Once cured, PVC leaves a soft, protective surface. • Polyamide powders offer a tough coating with excellent abrasion, wear, and impact resistance, as well as a low coefficient of friction when applied over a suitable primer. Since polyamid has a unique combination of low coefficient of friction and good lubricity, it is ideal for applications with sliding and rotating bearings, such as automotive spline shafts and relay plungers.
Poorly grounded parts can cause back ionization. Turning down the voltage and adjusting the amps can assist in overcoming the problem. In some cases, preheating the part allows the powder particles to fuse immediately without regard to the charge. FARADAY CAGE EFFECT During electrostatic powder coating, the high-voltage potential applied to the tip of the gun’s charging electrode creates an electric field between the gun and grounded part. This leads to the development of corona discharge. A great number of free ions— generated by the corona discharge—fill the space between the gun and part.
P65 21 4/10/02, 11:38 AM A Guide to High-performance Powder Coating • • • • • smooth coatings, good corrosion resistance, excellent adhesion to the substrate, excellent electrical properties, and good abrasion resistance. Some disadvantages of epoxy powder coatings include: • chalks when exposed to ultraviolet light and • poor gloss retention. Epoxy-polyester Hybrid Powder Coats Epoxy-polyester hybrids provide thin-layer coatings that cure similarly to epoxies. 076 mm) using colors with good hiding power.
A guide to high-performance powder coating by Bob Utech