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From ITW Gema
Back Ionization: An excessive build up of charged powder particles which may limit further powder being deposited on the substrate. The electrical charge on the surface layer may be reversed, repelling additional powder.Bulk Density: Mass per unit of volume in powder form including the air trapped between particles. Corona Charge: The process of inducing a static electric charge on powder particles by passing the powder through an electrostatic field generated by a high voltage device. Electrostatic Spray Technique: A deposition method of spraying and charging powder so that it is deposited on a grounded substrate. (See Corona charging and Tribo charging.) Faraday Cage Effect: A condition that may exist on a substrate due to its geometric configuration that may inhibit the electrostatic deposition of powder particles at a specific localized area. Fluidizing: The process of suspending the powder in a continuous stream of air giving it "fluid" characteristics. Used to facilitate transfer of the powder to the application device. Products & Services
Powder coating equipment is used to spray resin powder onto the surface of a pre-heated component, where the powder fuses and cures producing a protective coating.
Coating and spray booths are enclosures used to contain spray coating processes such as painting, powder coating, thermal spraying, and other deposition methods. This category includes hoods, cabinets, tunnels and similar enclosures
Coating equipment is used to apply organic, inorganic or metal coatings onto part surfaces for industrial applications.
Thermal spray equipment accelerates the dispersion of heated coating material from a spray torch towards the workpiece. The deposited material forms a coating on the surface.
Powder testing equipment is used to measure the static and dynamic properties of powders for pharmaceutical, coating, and other solid-particulate applications.
Product Announcements
Topics of Interest
Tribostatic powder coating or “tribocharging” is a process of creating a static electric charge on powder particles by friction against a non-conductive material. In tribostatic powder coating...
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The primary force for material transport in corona powder coating systems is an electric field established between the charged powder cloud and the part. Corona powder coating guns use a high-voltage...
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Powder coating is a finishing technology in which dry paint particles are electrostatically charged and applied to a smooth surface. Electrostatic attraction holds powder particles on the part surface...
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40.2 PROBLEMS RESULTING FROM CHARGE IN CLEANROOMS
40.2.1 Contamination
The relationship between electrostatic charge and contamination control in high-technology cleanrooms is a strong one,...
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REFERENCES
Trigwell, S., C. Yurteri, and M. K. Mazumder, “Unipolar Tribocharging of Powder: Effects of Surface Contamination on the Work Function,” Proceedings of the Electrostatic...
(Read More)
Technical Articles
Glossary of Common Powder Coating Terms (.pdf)
- Surface Coating and Protection
Magnetic Term Glossary
- Magnets
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