BAIJIAN - Material testing agency
The principle and characteristics of radiographic testing (RT)、 abbreviated as RT by industry insiders、 is an important professional category of industrial non-destructive testing. The main application of radiographic testing is to detect macroscopic geometric defects inside the workpiece. According to different characteristics、 radiographic testing can be divided into various methods、 such as X-ray tomography (X-CT)、 computer radiography (CR)、 radiographic method、 and so on. Radiography、 using X-rays or radioactive isotopes produced by X-ray tubes γ A non-destructive testing method for radiographic penetration of workpieces using film as a recording device for information. This method is the most basic and widely used radiographic testing method、 and it is also the main content of radiographic testing professional training. The principle of radiographic testing is essentially the use of electromagnetic waves or radiation (X-rays and γ The energy of radiation. During the process of penetrating an object、 rays interact with matter、 weakening their intensity due to absorption and scattering. The degree of intensity attenuation depends on the attenuation coefficient of the material and the thickness of the ray penetrating through the material The principle of radiographic method: If there are defects in the local area of the object (workpiece) being penetrated、 and the attenuation coefficient of the material that constitutes the defect is different from that of the test piece (for example、 in the weld seam、 the attenuation coefficient of the air inside the porosity defect is much lower than that of the steel)、 the intensity of the transmitted rays in this local area will differ from the surrounding area. Place the film in a suitable position to make it sensitive to light through the action of radiation、 and process it in a dark room to obtain the negative film. After the ray penetrates the workpiece、 due to the difference in transmitted ray intensity between the defective and intact parts、 there may be differences in blackness in the corresponding parts on the negative film. Radiographers can identify the location and nature of defects based on the differences in blackness of negative films by observing them&Nbsp
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific、 fair、 and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsinspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered、 meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing、 with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle、 low cost、 and attentive service 7. Possess authoritative qualifications such as CMA、 CNAS、 CAL、 etc 8. The testing report is authoritative and effective、 and is generally used in China