By Bob Utech
A advisor to High-Performance Powder Coating examines charges, functionality, and environmental results. The textual content appears to be like at technical advances made in powder coating systems and kit, and it explains those recommendations for these within the attempting to preserve a aggressive aspect. Powder coating fabrics and their functionality houses are checked out in addition to electrostatic theories, curing, and ovens. The booklet seems to be at layout and building points of the pretreatment washing machine procedure and explores tracking and conserving pretreatment platforms, besides the basics of warding off pretreatment failure. different themes comprise apparatus hoppers and feeders, powder cubicles, purposes, working stipulations, and questions of safety. functionality trying out, together with criteria and chemical resistance, are defined. additionally, troubleshooting approaches whilst a product is off color, off gloss, or shows terrible adhesion features is gifted
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Additional info for A guide to high-performance powder coating
Manufacturers typically quote powder coating materials by the pound (kg). When comparing price quotes for a specific powder, take the time to figure the coverage per pound (per kg) for each powder being quoted to ensure accurate comparison. p65 32 4/10/02, 11:39 AM Powder Process and Electrostatic Theory 4 Powder Process and Electrostatic Theory Powder spray guns impart an electrostatic charge to powder particles as they pass through the spray gun on their way to the part. The gun controls allow varying gun position, velocity, shape of pattern, and charge levels to direct the powder’s deposition on the part.
A quality oven should possess the capacity to efficiently operate slightly above its ambient temperature to its rated maximum temperature (as well as any point in between). p65 43 4/10/02, 11:40 AM A Guide to High-performance Powder Coating times. Many ovens work directly with airflow to maintain efficiency and to heat a part. Not all airflows are equal. Different processes require different airflow patterns, as shown in the following examples: • Horizontal/vertical airflow is ideal when working with large parts, when a process needs air circulation from both sides, and before the air returns to the top of the oven.
The advantages of using acrylic powders are: • • • • • • smooth surface, thin film-building capacity, good chemical resistance, good corrosion resistance, good mechanical properties, and excellent gloss retention. The disadvantages of using acrylic powders are: • poor mechanical properties (acrylic urethane), • higher price, • storing and shipping environments may need to be cooled, and • short shelf life. p65 26 4/10/02, 11:38 AM Powder-coating Materials and Their Performance Properties to meet extended manufacturer warranties.
A guide to high-performance powder coating by Bob Utech