How to distinguish ultrasonic flaw detector and X-ray flaw detector?
For an object, whether there are defects such as pores, pinholes, inclusions, porosity, cracks, segregation, incomplete penetration and insufficient fusion in the object cannot be observed with the naked eye. At this time, the flaw detector will play its function and help us detect defect. So what is the difference between ultrasonic flaw detector and Directional X-ray Flaw Detector? How do they detect internal defects in objects?
Ultrasonic flaw detector, as the name implies, is an instrument that uses ultrasonic waves to detect whether there are defects inside an object. It can detect defects, locate defects, evaluate defects, and diagnose defects.
The Directional X-ray Flaw Detector can penetrate materials that are generally impervious to visible light. The strength of its penetrating ability is related to the wavelength of the X-ray and the density and thickness of the penetrated material. The shorter the X-ray wavelength, the greater the penetrating power; the lower the density and the thinner the thickness, the easier the X-ray penetrates.
radiographic inspection
Advantages: It does not damage the inspected object, it is convenient and practical, and it can achieve unique detection effects that cannot be achieved by other detection methods.
Ultrasonic testing
The display of defects in ultrasonic inspection is not intuitive, the inspection technology is difficult, it is easily affected by subjective and objective factors, and the inspection results are not easy to save. Ultrasonic inspection requires smooth working surface, and requires experienced inspectors to identify the type of defect and suitable thickness. The inspection of larger parts makes ultrasonic flaw detection also has its limitations.
Therefore, for tests that require higher detection accuracy, radiographic testing has obvious advantages over ultrasonic testing, and it is also the first choice of customers.
