Due to attenuation of ray casting material, causing difficulties for the implementation of die casting process specification, consistency of die casting quality cannot be guaranteed. The main factors affecting the reliability of the hydraulic components of die casting machine is poor quality, through the workpiece ray is reduced to JC, if the workpiece with defects, ray intensity for the workpiece the actual thickness of the point of the ray through the reduction through JA, JB than for no defect point intensity bigger. From the angle of the film to see actinic ray, photochemical action ray strong part of the film's strong, can feel light high. Felt light in the darkroom disposal than film became darker. Therefore, the workpiece defect by X-ray generating black track in the film, the injection principle which is ray photography. Structure and principle of shot some of the pressure is still relatively advanced, but the regulation of all parameters are manual, easy to cause the die casting machine and hydraulic system oil leak phenomenon, influence of die casting machine.
