Coating thickness gauge definition

The thickness of ultrasonic thickness measurement gauge has become an important part of the processing industry and surface engineering quality inspection, and it is a necessary means for products to achieve superior quality standards. In order to internationalize the products, China's export commodities and foreign-related projects have clear requirements for coating thickness gauge.

The coating thickness measurement methods mainly include wedge cutting method, optical cutting method, electrolysis method, thickness difference measurement method, weighing method, X-ray fluorescence method, β-ray back scattering method, capacitance method, magnetic measurement method and eddy current measurement method. and many more. The first five of these methods are lossy detection, and the measurement methods are cumbersome and slow, and are more suitable for sampling inspection.

The X-ray and β-ray methods are non-contact non-destructive measurement, and the measurement range is small. The X-ray method can measure extremely thin plating, double plating, and alloy plating. The beta ray method is suitable for precision ultrasonic thickness gauge with coatings and substrates with an atomic number greater than 3mm coating measurement. The capacitance method is only used when thickness measurement is applied to the insulating coating of a thin conductor.

With the advancement of technology, especially in the introduction of microcomputer technology in recent years, the X-ray coating thickness gauge has taken a step toward micro, intelligent, multifunctional, high-precision and practical. The resolution of the measurement has reached 0.1 micron, and the precision can reach 1%, which has been greatly improved. It has a wide range of applications, wide measuring range, easy operation and low cost. It is a wide range of thickness measuring instruments used in industry and scientific research.