Protective Coating Thickness Measurement
Coating thickness measurement checks the actual coating thickness using magnetic, inductive, or eddy current methods. This ensures that required corrosion protection specifications are met.
Physical-Chemical Mechanism of Action
Coating thickness measurement uses magnetic or inductive fields to determine the thickness. Magnetic methods work well for ferromagnetic materials, while inductive and eddy current methods are also suitable for non-ferromagnetic materials.
Metallurgical Relevance & Risks in Welding
Inaccurate coating thickness measurement can result in a coating that is too thin or too thick. A too-thin coating provides less corrosion protection, while a too-thick coating wastes material and may affect mechanical properties. This can lead to cracks, wear, or other performance issues.
Workshop Practice & Instructions
Use suitable measuring devices like magnetic coating thickness gauges for ferromagnetic materials or inductive devices for non-ferromagnetic materials. Make sure the device is properly calibrated and the measurement is done in a calm environment. The coating thickness should always be within the specified tolerance range.