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Measurement method of coating thickness gauge

2024-01-10 13:40

The measurement method of coating thickness gauge is a professional instrument for measuring the thickness of metal surface coatings.

Measurement of coating thickness is a necessary means for products to meet superior quality standards, and has now become an important part of quality inspection in the processing industry and surface engineering.

In the context of global economic integration, in order to internationalize products, China has set clear requirements for the thickness of coating in its exported goods and foreign-related projects.

The measurement methods for coating thickness mainly include wedge cutting method, light cutting method, electrolysis method, thickness difference measurement method, weighing method, X-ray fluorescence method β There are various measurement methods such as X-ray backscattering, capacitance, magnetic measurement, and eddy current measurement.

Among them, five measurement methods, including wedge cutting method, light cutting method, electrolysis method, thickness difference measurement method, and weighing method, belong to lossy detection methods. Not only are the measurement methods cumbersome, but also the speed is slow, and they are mostly suitable for sampling inspection.

X-rays and β The X-ray method is a non-contact non-destructive measurement with a small measurement range. It can measure extremely thin coatings, double coatings, and alloy coatings.

β The X-ray method is suitable for measuring coatings and substrates with atomic numbers greater than 3. The capacitance method is only used for measuring the thickness of the insulation layer of thin conductive materials.

With the increasing progress of measurement technology in China, especially with the introduction of microcomputer technology in recent years, the coating thickness gauge in China has taken a step towards miniaturization, intelligence, multifunctionality, high precision, and practicality.

The coating thickness gauge combines two thickness measurement principles, magnetic thickness measurement and eddy current thickness measurement, and can accurately measure the thickness of non-magnetic coatings on ferromagnetic metal substrates and the thickness of non-conductive coatings on the surface of non-magnetic metal substrates;

It is a coating thickness gauge for both iron and aluminum, widely used in metal processing industry, hardware industry, shipbuilding industry, aerospace industry, and other fields.

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