1, online thickness gauge
On-line thickness gauge refers to the real-time display of measurement results to users or control systems in the process of thickness measurement, so that users or control systems can deal with abnormal data in time, which is an important link in automatic production. With the development of laser technology and CCD technology in 1980s, a new generation of on-line non-contact thickness gauge came into being. It is an application instrument that integrates laser light source, photoelectric detection and computer industrial control technology to realize online thickness measurement. It can be widely used for real-time measurement of the thickness, width and contour of various materials on the production line, and has the advantages of non-contact measurement, no damage to the surface of the object, strong anti-interference ability, high precision, complete data acquisition and processing functions and so on. Online thickness gauge includes laser online thickness gauge and coating online thickness gauge.
2.x-ray thickness gauge
X-ray thickness gauge is a non-contact dynamic measuring instrument, which uses the characteristics that the change of X-ray intensity is related to the thickness of the material when X-ray penetrates the measured material to determine the thickness of the material. It takes PLC and industrial computer as the core, collects calculation data and outputs the target deviation value to the rolling mill thickness control system, which achieves the required rolling thickness.
3. Eddy current thickness gauge
Eddy current thickness gauge is a small instrument, which can conveniently and non-destructively measure the thickness of paint, plastic, rubber and other coatings on non-ferrous metal substrates or anodic oxide films on aluminum substrates. The instrument is widely used in machinery, automobile, shipbuilding, petroleum, chemical industry, electroplating, plastic spraying, enamel, plastic and other industries.
4. Laser thickness gauge
The laser thickness gauge is generally composed of two laser displacement sensors that shoot up and down. The upper and lower sensors measure the positions of the upper surface and the lower surface of the measured object respectively, and the thickness of the measured object is obtained through calculation. The advantage of laser thickness gauge is that it adopts non-contact measurement, which is more accurate than contact thickness gauge and will not lose its accuracy because of wear. Compared with ultrasonic thickness gauge, the accuracy is higher. Compared with X-ray thickness gauge, there is no radiation pollution.
5. Real-time imaging
Real-time imaging is an X-ray nondestructive testing method. It is a method to display the image of the detection result on the screen in real time, and use this image to analyze, judge and evaluate the detected material qualitatively and quantitatively, so as to obtain the uniformity and consistency of the detected material, or the information of the structure, assembly, material density and thickness of the object, and achieve the purpose of nondestructive testing. Real-time imaging method is highly concerned by the industry and is developing with each passing day because of its advantages of intuitive and clear detection images, fast detection speed and low cost. In the early days, because the obtained image is analog, it is called real-time imaging, also known as industrial television. With the rapid development of digital technology, especially digital image technology, real-time imaging is becoming more and more digital and called digital imaging. They actually represent the same concepts and methods.
6. Industrial endoscope-the most widely used endoscope on the market at present.
Industrial endoscope can be used for examination and observation of high temperature, toxicity, nuclear radiation and places where human eyes can't observe directly. Mainly used in automobiles, aero-engines, pipelines, mechanical parts, etc. Non-destructive testing can be realized without disassembling or destroying components and stopping the operation of equipment. Widely used in aviation, automobiles, ships, electric power, chemistry, electric power, gas, atomic energy, civil construction and other modern core industries. Industrial endoscopes can also be coupled with cameras, video cameras or electronic computers to form a camera, video recording and image processing system to monitor, record, store and analyze objects in the field of view.
7, flaw detector
Usually, the flaw detector is a nondestructive flaw detector. The flaw detector is specially designed for shipbuilding, petroleum, chemical industry, machinery, aerospace, transportation, construction and other industrial departments. It is used to check the welding quality of materials and parts such as hulls, pipelines, high-pressure vessels, boilers, airplanes, vehicles and bridges, as well as the quality of various processed parts such as light metal, rubber and ceramics.
8. Ultrasonic flaw detection
Ultrasonic flaw detection is a method to check the defects of parts by using the characteristics of ultrasonic energy penetrating deep into metal materials and reflecting at the interface edge when entering from one section to another. When the ultrasonic beam is transmitted from the probe to the inside of the metal, it will generate reflected waves when it encounters defects and the bottom surface of the part, forming pulse waveforms on the fluorescent screen, and judging the position and size of the defects according to these pulse waveforms.