Non-destructive testing of welds must pass ultrasonic inspection, radiographic inspection, magnetic particle inspection or penetrant inspection to ensure that the weld quality meets the requirements and design intent and does not damage the performance and integrity of the weld. weld inspected.
Non-destructive testing involves using the sound, light, electromagnetic and electrical characteristics of materials to detect whether there are defects or irregularities in the object being measured without damaging or affecting the performance of the test. measured object, and provide the size. , length, length, length, length and other information. The location, nature and number of defects.
Non-destructive testing methods mainly include: visual inspection, radiography, ultrasonic testing, magnetic particle testing, penetrant testing,Eddy current testing, ultrasonic diffraction time difference method, unconventional testing methods, etc. Not only raw materials used in production, intermediate processes and final products can be inspected, but also the equipment used.
Detailed information
Non-destructive testing is non-destructive because it does not damage the performance of the tested object, it is complete, because the detection is; non-destructive, if necessary, it can complete 100% of the total detection of the tested object through destructive detection, it has the whole process, and destructive detection is general;
Non-destructive testing is suitable for testing raw materials such as tension, compression and bending commonly used in mechanical engineering. Perform destructive tests on raw materials used in production. LFinished products and items cannot be subjected to destructive testing without damage unless they are not intended for further use. Test object performance.
Baidu Encyclopedia - Non-destructive testing of welding
Baidu Encyclopedia - Non-destructive testing