How Magnetic Induction Method Measure Powder Coating ThicknessSeptember 6, 2019
Although powder coating guns meticulously apply thin films of air-driven particles, that feature is rarely blindly accepted. Certainly, if the company in question is targeting a quality-assurance certification, they're not just going to coat a workpiece and send it straight to the curing oven, no questions asked. No, as part of that QA program, the protective sheathing has to be thickness-audited, and this skin verification check must be professionally conducted.
Magnetic Induction Measurement
There's more than one way to judge the thickness of the powder-coated film, of course. Comb gauges physically touch the uncured powder after it has been applied. Moved perpendicularly along a coated surface, the "Mils" scale measures the thickness. Ultrasonics, eddy currents and more, there's a whole sub-category dedicated to checking coating uniformity. With magnetic induction instruments, the same principles apply, although they're practised in a much finer manner. For one thing, since the instruments measure invisible magnetic fields, there's no need for any contact between the measuring device and the material substrate. That, once again, is a fine feature to have on-hand when working as a pro-level powder coating outfit.
How Does The Technology Work?
Underneath the coating, a ferrous mass is likely supporting the coating. On utilizing a magnetic induction measurement meter, changes in field flux density are recorded in that ferrous material. As the device probe moves over a workpiece, those field fluctuations are electronically recorded and sent to an easy to read digital display. That readout pops up on an LCD (Liquid Crystal Display) as a varying line or as a multi-digit measurement. The more expensive the electronic gadget, the more display options and features become available. Generally, though, these testers are accurate and loaded with quality assurance-flavoured features. Easy to run, the constant pressure probe shows in real-time just how consistently thick a powder coating has been applied, all without ever disturbing the electrostatically adhered substrate layer. Better yet, the results can be stored and used as part of an in-house system audit.
In the old days, comb gauges and other unremarkable contact-based testing methods were good enough. That old "good enough approach" is no longer enough. Powder coating technology is everywhere, and high-tolerance coating measurement consistency is more important than ever before. To absolutely guarantee substrate thickness uniformity, electronic powder coating thickness testing has adapted to deliver a more refined range of quality gauging tools. In summary, contactless magnetic induction technology uses flux density changes to precisely gauge powder coating thickness. The probe electronically records the data, displays it in real-time, or it's stored so the information can be used to run a process audit.
GP Industries Pty Ltd
1 Regal Court,
Vermont South VIC 3133
Phone: (03) 9802 1355
Fax: (03) 9802 6027
20 Burgess Road,
Bayswater North VIC 3153
Phone: (03) 9761 7676
Fax: (03) 9761 7671
Optimized by NetwizardSEO.com.au
- The Significance of Powder Coating Ovens in Automotive Manufacturing
- Emerging Technologies in Powder Coating for a Sustainable Future
- How the Right Powder Coating Equipment and Powder Coating Application Can Help Avert Corrosion and Rust
- The Benefits of Powder Coating in Metal Fabrication
- How Magnetic Induction Method Measure Powder Coating Thickness
- Overcoming the Faraday Cage Effect in Powder Coating Application
- The Significance of Particle Size in Powder Coating Transfer Efficiency
- The Differences Between Powder Coating and Electroplating
- Powder Coat Adhesion Testing Process
- Why Is Powder Coating a Sustainable Option?
- Common Reasons for Chipped Powder Coating
- Electrostatic, Low Grade Ion, and Tribo: Charging Processes Used in Powder Coating
- What are the Causes of Outgassing in Powder Coating?
- Powder Coating Contamination and Its Effects on Product Quality
- Understanding the Causes of Craters in Powder Coating
- Powder Coating Booth Temperature: A Factor in Powder Coating Transfer Efficiency
- Powder Coating: A Phosphate Pre-Treatment is a Plus
- Paint Powder Qualities Required for Powder Coating Equipment
- Common Issues of Metallic Powder Coating
- Powder Coating Gun Settings: How It Can Affect Powder Coat Finish
- Turn Key Powder Coating Equipment: Customised Solution for All Powder Coating Needs
- Important Things to Keep in Mind Prior to Ordering Your Powder Coating Oven
- Appearance Issues: What Happens When a Powder Coating Equipment is Already Failing?
- View all articles…
- Powder Coating in Sheet Metal Processing
- Powder Coating for Automotive for Best Finished Results
- View all articles…
- Is It Possible to Powder Coat Chrome Materials?
- Pre-Treatment Process of Materials before Powder Coating
- View all articles…