NM01XXG2005
Product Overview
MITECH inflatable X ray generator is a portable X-ray flaw detector for X ray nondestructive testing, it uses the the difference of degree of absorption to material thickness to detect the internal defects of materials. The detector has the advantages of small size, light weight, easy-carry, simple operation, especially suitable for cooperatively working with power generation units in various harsh environments ; film material can directly display the size and shape of internal defects in the workpiece , the defects image reflected on the film are true and clear and it can be long-term preserved; Without special requirements to the surface roughness of the workpiece . the effect of material grain size has little effect on the test results, applied to the internal defect detection of various materials. With strong anti-interference ability, good stability, reliable operation, it has obvious advantages in the construction and high-altitude operations, is widely used in shipbuilding, machinery manufacturing, aviation, railway, pressure vessels, boilers, oil, Chemical industry, national defense industry and other industries, is the ideal equipment for nondestructive testing.
Function & application
The instrument can be widely used in shipbuilding, machinery manufacturing, aviation, railway, pressure vessels, boilers, oil, Chemical industry, national defense industry and other industries, is the ideal equipment for nondestructive testing.
Working Principle
X ray generator produce X-ray film, using the different absorption degree between the material and thickness to display the internal defects of parts and weld seam in the film, according to the nature, size and location of the defect to evaluate the quality of materials and products.
This series of X-ray generator adopts silicon controlled single-phase bridge rectifier, rectified voltage changed into DC voltage through LC filter circuit. This voltage converted into a unidirectional pulse with a variable frequency by thyristor chopper circuit, the sent into high-voltage pulse transformer for power supply to the X ray generator. This voltage of tens KV even hundred KV is added in X ray tube (a two staged tube) at both ends, electrons from the cathode to anode direction to accelerate and get a great amount of energy. when the high-speed electrons strike the anode, and by interacting with the anode metal atoms outside the nuclear Coulomb field, emit X rays.
When X ray through the material, the intensity gradually weakened. The important properties of X rays is to expose the film, just like ordinary light, it can make the silver halide in film emulsion layer to produce latent image center, after developing and fixing will be blackened, the more it receiving the ray the more black the film is. This effect is called the photographic effect. Because the photographic effect of X ray on the silver halide is much smaller than that of ordinary light, so you must use the special X ray film, both sides of this film are coated with a thick latex; in addition, also need to use a photosensitive screen which can strengthen the effect, the screen is usually made of lead foil. Put the exposed film in the darkroom, after developing, fixing, washing and drying, then observing the dried film on the viewbox , according to the images of defective parts and non-defects. We can determine the type, number, size of defects, and this is the principle of radiographic inspection.
Working Conditions
Environment temperature: -25℃-40℃
Relative humidity: no bigger than 85%
Safe work pressure: 0.35-0.50mPa
Note, Do not use when the pressure is under 0.35mPa