Paint Film Thickness Measurement

The paint thickness meter is one of the paint film thickness measuring instruments. In addition to the micrometer, simple equipment such as a dial gauge can also be used for dry film thickness detection. This article will mainly introduce the relevant knowledge of paint film types and paint thickness meter for your reference.

Paint film refers to a continuous film formed by applying paint on a certain substrate, mainly used for the protection and decoration of the substrate.For example,in ships and motor vehicles, paints can form a paint film on the outside for anti-corrosion and rust-proof decoration. However,in the actual construction process,the paint film thickness is not completely uniform. In order to control the paint film thickness formed after the paint is applied, the premature failure of the paint film coating due to the improper thickness is avoided. The paint film thickness needs to be managed.

The paint film can be divided into dry film and wet film. Dry film thickness can be controlled by controlling the wet film thickness.The dry film thickness can be directly managed.Both methods are used to achieve the overall film thickness requirement,but the actual measurement during the construction process is mainly to test the dry film thickness. Manufacturers usually have certain requirements on the paint film thickness.

Measuring the paint and dry film thickness can use professional paint thickness meters. Common electronic paint thickness meters have magnetic thickness gauges, eddy current thickness gauges and some destructive thickness gauges. With the improvement of the paint thickness meters,the sensitivity, accuracy and stability of the instrument have been greatly improved.There are even dry film thickness gauges using both magnetic induction measuring principles and eddy current measuring principles. Linshang paint thickness meters use both magnetic and eddy current measuring principles to measure the paint film thickness on magnetic metal substrates such as steel.It can also measure non-magnetic metals such as steel and aluminum.the thickness of the insulating paint film on the substrate such as zinc.

When measuring,it is necessary to ensure that the probe of the instrument is in vertical contact with the paint film surface, due to the paint in different positions. There is a difference in paint film thickness,so it is recommended to change the position for multiple measurements and then calculate the average value. After the measurement results are obtained, users can see whether the dry film thickness meet the standard. Several paint thickness meters are introduced below: