Cured Powder Coating Thickness Measurement | Powder Coating Thickness Gauge

All cured powder coating thickness must be measured regularly. Regular powder coating thickness measurement helps control material costs, increase efficiency and maintain the quality of the finished powder coatings. Powder coating manufacturers usually recommend using a powder coating thickness gauge to control the powder coating thickness within a reasonable thickness range to help the product achieve the best performance and this is also what customers want.

Powder coatings need to be measured with different instruments before and after curing. For uncured powder coating thickness, we recommend to measure it using power coating thickness gauge. Every powder coating operator should know this powder coating thickness gauge and how to use it.

Coating thickness is arguably the most important measurement in the application and inspection of protective coatings. Powder coatings perform their intended function within the thickness range specified by the manufacturer. Many physical and appearance characteristics of the finished coating are directly affected by the dry film thickness (DFT). Powder coating thickness will affect the color, gloss, surface profile, adhesion, flexibility, impact resistance and hardness of the coating. When the powder ocaitng thickness is not within the tolerance range, the parts assembled after coating will also be affected.

There are other benefits to measuring coating thickness accurately. Regardless of meeting the requirements of the International Organization for Standardization (ISO), customers' requirements for process control or quality, companies need to control the quality of their coatings to avoid costly rework.

The most common method for measuring the cured powder coating thickness is powder coating thickness gauge . The powder coating thickness gauge is a handheld instrument with low cost which is easy to operate. It can be divided into magnetic induction, eddy current and ultrasonic powder coating thickness gauge according to different powder coating thickness measuring principles.

When powder coating is based on ferrous metal such as steel, a powder coating thickness gauge based on the principle of magnetic induction can be used. During the measurement, a magnetic field is generated by the electromagnetic coil. The magnetic field changes as it approaches the magnetic substrate. The change of the magnetic field depends on the distance from the metal substrate to the detector, that is, the powder coating thickness and usually does not require any calibration adjustments.