Lost wax casting at the time of production and processing of will appear different degrees of casting defects, if the casting defects when we should be how to test?Only under the condition of the casting defect inspection out so as to make our products more high quality, can let the customer more trust.A, internal defects inspection Including pressure test;Ray inspection;Ultrasonic inspection.Second, the appearance defect inspection:Check the lost wax casting castings with the naked eye or with the aid of a magnifying glass and sharp tools such as hammer, watch for exposure to the lost wax casting appearance defects, such as cracks, porosity and surface defects such as shrinkage cavity, adhering sand;Use of measuring tool, work platform and model test precision.
t, the greater the energy attenuation of castings in the hole, the density is far lower than the density of the metal, such as the inclusion ray with these defects, the attenuation is small, on the negative energy is larger than zero defect parts, therefore, can show the shape of the defect on the film.