What are the benefits of cladding thickness measurement over coating thickness measurement?
The coating thickness gauge is a newly developed product, which has the following main advantages compared with the previous coating thickness gauge:
1. Fast measurement speed: 6 times faster than other TT series;
2. High precision: The precision of the product can reach 1-2% after a simple calibration of 0. It is a product that can reach A-level in the market at present, and its precision is much higher than that of the same domestic products such as Times. It is also higher than imported products such as EPK;
3. Stability: The stability of the measured value and the stability of use are better than imported products;
4. The function, data, operation and display are all in Chinese;
The covering layer formed to protect and decorate the surface of materials, such as coating, plating, cladding, sticking, chemically formed film, etc., is called coating in relevant national and international standards. Coating thickness measurement has become an important part of quality inspection in processing industry and surface engineering, and it is an essential means for products to meet high quality standards. In order to make the products internationalized, there are clear requirements for the thickness of the cladding in my country's export commodities and foreign-related projects.
The measurement methods of coating thickness mainly include: wedge cutting method, optical section method, electrolysis method, thickness difference measurement method, weighing method, X-ray fluorescence method, β-ray backscattering method, capacitance method, magnetic measurement method and eddy current measurement law etc. Among these methods, the first five are destructive testing, the measurement methods are cumbersome and slow, and most of them are suitable for sampling inspection.
X-ray and β-ray methods are non-contact and non-destructive measurements, but the devices are complicated and expensive, and the measurement range is small. Due to the radioactive source, users must comply with radiation protection regulations. X-ray method can measure extremely thin coating, double coating and alloy coating. The β-ray method is suitable for the measurement of the coating and the coating with the atomic number of the substrate greater than 3. The capacitance method is only used when measuring the thickness of the insulating coating of a thin conductor.
