Detection Content

Detection Purpose: Inspect mechanical parts, raw materials, welds and other defects

Detection range: All kinds of metal products and parts surface opening defect detection

Penetration testing is one of the nondestructive testing method, it is a kind of surface detection method, divided into two kinds of fluorescent inspection and penetrant inspection, mainly used to detect such as naked eye cannot identify crack surface damage, such as detection of near surface defects (cracks) stainless steel material, porosity, loose, layered, incomplete fusion and incomplete fusion defects such as (also known as PT testing). It is suitable for inspection of the defects (cracks, pores, etc.) in the surface openings of compact metal materials (welds), non-metallic materials (glass, ceramics, fluoroplastics) and products. Basic principle of stain detection: apply the stain on the surface of the material, and the stain penetrates the damaged part. Let sit for a while and rinse the stain off the surface. Apply the developer to the cleaned surface and the damage can be seen clearly as the stain penetrates. The capillary action of the developer is used to adsorb the residual permeate in the defect to test the defect.