Jiangsu ray detection RT nondestructive testing
Mr. Wang: 13102238283 (WeChat)
QQ:3144667033
Phone: 022-23892103 email: 182@rd-test.com
The English X-ray detection: radiographic testing; as radiographic inspection of five conventional NDT method, has been widely used in industry, it is used for metal inspection, also used for non metal inspection. Defects, such as porosity, pinholes, inclusions, porosity, cracks, segregation, lack of penetration and lack of fusion, can be examined by x-rays. Application of the industry has special equipment, aerospace, ships, weapons, hydraulic equipment and bridge steel structure.
X ray inspection
The defect image detection directly, determine the size and nature of the defects is relatively easy, easy processing, radiographic films can be used as the original data stored for a long time, the use of image processing technology can make the evaluation analysis automation. In addition, ray detection does not destroy or pollute the object. Disadvantages are: harmful to the human body, in the detection must pay attention to protection. In addition, compared with other non-destructive testing methods, the higher cost of ray detection.
Radiographic inspection application
Radiographic testing is only applicable to the detection of significant anomalies in thickness or density parallel to the beam direction. Therefore, the ability to detect planar defects, such as cracks, depends on whether the device is in the best direction. In all directions can be measured on the volume of defects (such as pores, inclusions), as long as the relative thickness of the cross section is not too small, can be detected.
According to the principle that ray detection, which is dependent on the ray through the objects of different degree of attenuation to test, so it is suitable for any material, whether metal or non-metal materials can be detected, such as casting and welding, testing various materials, plastic honeycomb structure and carbon fiber material, also can be used to understand the internal structure sealed objects.
Radiographic inspection RT
Standard and method for radiographic testing
Test standard
JB/T 4730.2-2005 nondestructive testing of pressure equipment second parts: radiographic testing
Principle and process of radiographic inspection
When the uniform strength beam through the irradiated objects, if the object local defects or structural differences, it will change the object to the radiation, so that different parts of transmission radiation intensity is different, so using a detector (e.g., using radiographic film) detecting the transmitted x-ray intensity, can determine the object the internal defects and material distribution etc..
The commonly used methods of X-ray inspection include X ray inspection, gamma ray inspection, high energy X-ray inspection and neutron ray inspection. Commonly used for industrial X-ray inspection, the general use of X ray flaw detection, gamma ray detection.
Ray has radiation biological effect on human body, which is harmful to human health. Inspection operation, should comply with the relevant safety regulations, should take the necessary protective measures.
Radiographic inspection RT
Technological process：
1, preparation before testing
2, select the transmission process
3, on-site testing
4, processing
5, negative evaluation, issued a test report