On the development of nondestructive testing

Date：2021-08-12 18:25:24Views：1870

Nondestructive testing was established in 1978 in China, and with the continuous development of society, China's nondestructive testing industry has also entered a stage of rapid development. Therefore, in order to promote the nondestructive testing industry to have a broader market development prospect, it is necessary to analyze its development status and look forward to its development prospect.

Household nondestructive testing equipment can be roughly divided into 26 categories, with more than 1000 specific product models and varieties. Generally speaking, it covers most of the current domestic NDT technology applications, especially the equipment, equipment, accessories, consumables, etc. used for conventional NDT. Basically, it has achieved low price and high quality, and can meet the general testing needs, and almost no domestic NDT products are exported to countries and regions outside the mainland.

For example, portable ultrasonic flaw detector and analog ultrasonic flaw detector, digital ultrasonic thickness gauge, ultrasonic testing standard test block, ultrasonic probe, X-ray flaw detector, various radiographic auxiliary inspection equipment, portable eddy current testing equipment, large eddy current testing automation equipment system, etc.

1.Ultrasonic testing equipment: digital and analog universal portable ultrasonic flaw detector, large automatic ultrasonic flaw detection system (pipe, rod, plate, welded pipe, etc.), various special detection equipment (nodular cast iron spheroidizer, bolt tightening force tester, sound velocimeter, ceramic insulator ultrasonic tester, etc.), various universal and special ultrasonic probes, ultrasonic thickness gauge, TOFD ultrasonic flaw detector, Phased array ultrasonic flaw detector, etc.

2.Magnetic particle testing equipment and materials: universal portable, mobile, bed type magnetic particle flaw detection equipment, various special magnetic particle flaw detection equipment, large semi-automatic and automatic magnetic particle flaw detection system, pulse magnetization equipment, degaussing machine, auxiliary tools and consumables. The application of rotating magnetic field, compound magnetization and fluorescent magnetic particle testing has become more and more common. The automatic crawling device and automatic fluorescent magnetic particle inspection system recorded by CCD camera for magnetic particle inspection have been put on the market.

3.Penetration test equipment and materials: color permeation, fluorescent penetration, color fluorescent permeable materials, portable equipment (such as spray cans), large automatic penetration assembly line systems, assistive devices and equipment for different sensitivity levels (general industrial to nuclear industrial grade special materials).

4.Ray detection equipment: X-ray, γ Rays, β X-ray, neutron ray, high-energy X-ray, X-ray tube, general portable, mobile, large fixed ray detection equipment, frequency conversion and speed regulation, constant frequency, constant potential X-ray machine, auxiliary equipment, various radiation protection equipment and devices, and various radioisotope sources.

5.Eddy current flaw detection equipment: universal portable digital eddy current flaw detector, pulse eddy current flaw detection system, array eddy current flaw detection system, large-scale automatic eddy current flaw detection system, various special eddy current flaw detection equipment, supporting various eddy current sensors, coating thickness gauge, supporting auxiliary equipment, material sorter, conductivity tester, hardness sorter, metal detector, wire rope tension tester, Wire rope detector, etc

6.Magnetic flux leakage testing equipment: general purpose, special purpose, large automatic magnetic flux leakage detection system.

7.Endoscope: optical endoscope, optical fiber endoscope, video endoscope.

8.Optical measuring instrument: white light meter, black light meter, ultraviolet intensity meter, fluorescence meter, etc.

9.Acoustic emission test equipment: multichannel acoustic emission testing of portable and large systems.

10.Leak detection equipment: electric spark leak detector, intelligent acoustic pulse rapid leak detector, pipeline leak detector locator, organic inert fluorescent tracer leak detection products, penetration leak detector, underground pipeline leak detector, underground cable leak detector, pipeline locator, natural gas pipeline leak detector, wet coating leak detector, etc.

11.Hardness measuring instrument: Leeb hardness tester, ultrasonic hardness tester.

12.Electromagnetic ultrasonic flaw detection equipment: electromagnetic ultrasonic flaw detection system, automatic electromagnetic ultrasonic flaw detection system, electromagnetic ultrasonic thickness gauge.

13.X-ray real-time imaging and industrial CT equipment: use image enhancement type, Dr type conventional equipment, special equipment and resolution test card.

14.Laser detection equipment: portable laser electronic speckle meter, large automatic tire nondestructive testing system using laser digital speckle interferometry technology, laser material thickness online measuring instrument, online laser diameter measuring instrument, laser digital detector, laser ultrasonic testing system, holographic photosensitive film and dry plate, etc

15.Potential method crack depth meter

16.Infrared detection equipment: infrared thermometer, infrared endoscope, infrared thermal imager.

17.Standard test blocks of various series, sensitivity test block and test block, general comparison test block, special comparison test block, etc. are used for various nondestructive testing methods.

18.A variety of special mechanical aids and systems for non-destructive testing applications: mechanical equipment for semi-automatic and automatic flaw detection system, pipeline crawler for radiographic testing, test block scraper, commercial X-ray machine, fixed fixture and bracket, crane, etc.

19.With phosphor, UV lamp and black light source, it is used for fluorescent penetrant testing。

20.Rock, concrete, pile foundation, concrete reinforcement tester, digital rebound hammer, reinforcement position tester, floor thickness tester, wave velocity logging tool and other testing equipment。

21.Microwave detection system，Terahertz wave detection system。

22.Thermoelectric metal material sorter。

23.Magnetic stress tester。

24.X-ray stress tester, X-ray diffractometer.

25.Metal magnetic memory technology: intelligent magnetic memory metal detector, stress concentration magnetic detector, crack magnetic indicator.

26. Others: such as surface roughness meter, vibration meter, residual stress tester, ultrasonic concentration meter, ultrasonic flowmeter, ultrasonic liquid level meter, ceramic slurry meter, etc.

According to the analysis report on market prospect and investment strategic planning of China's NDT industry, many important enterprises in China generally lack necessary testing technology, testing equipment and qualified testing personnel, and lack necessary testing of raw materials, semi-finished products and even products, which not only increases the production cost, but also can not reliably ensure the quality of products; China's NDT manufacturers mainly produce traditional NDT instruments and equipment, which can not meet the requirements of modern industrial products for NDT equipment due to the characteristics of high temperature, high pressure, high speed and high stress; In many industries, NDT specifications, industry standards and national standards cannot be strictly implemented; The lack of senior NDT professionals in enterprises has caused some enterprises to spend a lot of money, and the imported NDT equipment and data can not be digested systematically, the equipment can not operate normally, and the function is not good enough for technical maintenance. Many enterprises purchase equipment only to cope with industry certification, but they can not guarantee the product quality of enterprises.

With the rapid development of China's modernization, it is necessary to gradually integrate with the international community in many aspects. The application of nondestructive testing technology will be more and more extensive and the application requirements will be higher and higher. There will be more fields that need to apply nondestructive testing technology, especially more new types of nondestructive testing systems and instruments, All these will create opportunities for the upgrading of China's NDT equipment manufacturing industry.