Coating thickness gauge selection method:
Can be based on the measurement of the need to choose a different thickness gauge, magnetic thickness gauge and eddy current thickness gauge general measurement of the thickness of the application of the 0-5 mm, this type of instrument is divided into the probe and the host of a body type, the probe and the host of the separation of the type, the former is convenient to operate, the latter applies to the
Measurement of the non-planar shape. Thicker dense material material to be measured by ultrasonic thickness gauge, the measurement of the thickness can reach 0.7-250 mm. Electrolytic thickness gauge is suitable for measuring the thickness of gold, silver and other metals plated on top of very thin wires.
1, dual-purpose, a collection of magnetic thickness gauge and eddy current thickness gauge two instruments, can be used to measure the thickness of iron and non-ferrous metal substrate coating. Such as: (1) steel on the copper, chromium, zinc and other plating layer or paint, paint, enamel and other coating thickness. (2) Aluminum, magnesium materials on the anodic oxide film thickness. (3) Copper, aluminum, magnesium, zinc and other non-ferrous metal materials on the thickness of the coating. (4) Thickness of aluminum, copper, gold and other foils and strips and paper, plastic film. (5) Thickness of thermal spraying layer on various steel and non-ferrous metal materials. Instrument features: the use of dual-function built-in probe, automatic identification of ferrous or non-ferrous matrix materials, and select the appropriate measurement method for accurate measurement. The ergonomically designed dual display structure allows you to read the measurement data at any measurement position. Easy to operate with cell phone menu-based function selection. Upper and lower limit values can be set, when the measurement result exceeds or conforms to the upper and lower limit values, the instrument will emit corresponding sound or blinking light prompts. It is extremely stable and can be used for long term without calibration.
2, conventional type. On the surface of the material protection, decoration of the formation of the cover layer, such as coating, plating, dressing layer, paste layer, chemical generation of film, etc., in the relevant countries and international standards is called cladding (coating).
The thickness measurement of the coating has become an important part of the processing industry, surface engineering quality testing, is a product to achieve superior quality standards of the necessary means. In order to make the product internationalization, China's export commodities and foreign-related projects, the cladding thickness has a clear requirement. Measurement methods of cladding thickness mainly include: wedge cut method, light cut-off 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 method, etc. The first five of these methods have the advantage of being able to measure the thickness of the cladding, but they are also able to measure the thickness of the cladding. The first five of these methods are lossy, cumbersome measurement means, slow, mostly applicable to sampling inspection. x-ray and β-ray method is a non-contact non-destructive measurement, but the device is complex and expensive, the measurement range is small. Because of the radioactive source, the user must comply with the radiation protection specification. x-ray method can measure very thin plating, double plating, alloy plating. β-ray method is suitable for plating and substrate atomic number greater than 3 plating measurement. The capacitance method is only used for thickness measurement of insulating claddings of thin conductors. With the increasing progress of technology, especially in recent years after the introduction of microcomputer technology, the use of magnetic and eddy current method of thickness gauge to miniature, intelligent, multi-functional, high-precision, practical direction into a step. Measurement resolution has reached 0.1 micron, accuracy can reach 1%, a substantial improvement. It applies to a wide range, wide range, easy to operate and inexpensive, is the most widely used industrial and scientific research thickness gauge. The use of non-destructive methods do not destroy neither the cladding nor the substrate, fast detection speed, can make a large number of testing work economically.
Xiamen Xinrui Instrumentation Co., Ltd. is a number of years engaged in the import of instruments and equipment sales trading company, the company AR930 coating thickness gauge using magnetic thickness measurement method, is a portable coating thickness gauge, it can be fast and non-destructive, accurate ferromagnetic metal substrate on the non-magnetic (such as paint, electric ferry layer, etc.) cladding thickness on the measurement. It is widely used in manufacturing, metal processing industry, chemical industry, commodity inspection and other inspection fields.