Dye penetrant testing

Penetrant testing is widely used to detect the surface opening defects of non porous materials, such as metals, ceramics and plastics. It can also detect the defects with complex shapes at one time It is mainly used for the detection of cracks, white spots, looseness, inclusions and other defects without additional equipment. Portable canned penetrant is often used for on-site detection, including penetrant, cleaning agent and developer, which is convenient for on-site use.

Dye penetrant testing

After the surface of the workpiece is coated with dye penetrant, under the action of capillary, the penetrant can penetrate into the surface opening defect after a certain time; Remove the excess penetrant on the working surface, dry it, and then apply the adsorption medium developer on the surface of the workpiece; Similarly, under the capillary action, the developer will infiltrate the penetrant in the suction arch defect, that is, the penetrant back into the imaging; Under the visible light source, the penetrant trace at the defect is displayed in bright red, which shows the morphology and distribution of the defect.