來源：http://www.msmpoz.com/ 日期：2021-12-01 發布人：adminlehao
Spiral steel pipe as a kind of free medium pipeline, whether it is the implementation of the National Standard or the ministry standard must stop with x-ray inspection, inspection qualified to factory, then how long steel pipe in the scope of inspection?
Jinan spiral pipe manufacturers directly tell you that the length of the ordinary spiral pipe is 12 meters, so long in the detection range, the detection range of the spiral pipe is based on the resolution of the detection equipment, the minimum detection equipment is 7.5 meters, the longest is 12 meters, if it is non-fixed length 12 meters under the circumstances how to detect it?
We can use the method of segmentation, the demand for less than 7.5 meters of spiral steel pipe detection according to its multiple or put together more than 7.5 meters of spiral steel pipe to detect. Through x-ray perspective photography and real-time imaging of Industrial TV, the internal defects of materials, parts and welds are revealed from the film and imaging.
Such as cracks, shrinkage cavity, air hole, slag, not dissolved, not welded through, and so on, certain location and size.
The quality of the material or product is assessed according to the nature, size and location of the defects, thus avoiding serious accidents caused by internal defects and poor processing of the material. X-ray flaw detection is a kind of non-destructive testing method which can detect defects by using x-ray which can penetrate the material and has the attenuation characteristic in the material.
The wavelength of x-rays is very short, usually 0.001 ~ 0.1 nm. Jinan spiral tube manufacturers in the design of x-ray transmission at the speed of light in a straight line, not affected by electric and magnetic fields, can penetrate the material, in the process of attenuation, film sensitivity.