This can be a quick, economical and wide used non-destructive check technique in gas and industry. We tend to square measure assisted by a team of expert professionals and technicians who are closely act with our clients and render this service as per the elaborate specifications of the clients. Commonly, Dye Penetrant Test DPI is used to detect cracks, surface porosity, lack of penetration in welds and defects resulting from in-service conditions like fatigue cracks of components or welds in castings, forgings, and welding surface defects. Dye Penetrant is drawn into the surface-breaking crack by capillary action and excess surface penetrant is then removed; a dry powder is then applied to the surface, to draw out the penetrant in the crack and produce a surface indication.
Liquid penetrant inspection
Dry Penetration Testing BS EN ISO - Surgical Materials Testing Laboratory
Dye penetrant inspection DP , also called liquid penetrate inspection LPI or penetrant testing PT , is a widely applied and low-cost inspection method used to check surface-breaking defects in all non-porous materials metals, plastics, or ceramics. The penetrant may be applied to all non-ferrous materials and ferrous materials, although for ferrous components magnetic-particle inspection is often used instead for its subsurface detection capability. LPI is used to detect casting, forging and welding surface defects such as hairline cracks, surface porosity , leaks in new products, and fatigue cracks on in-service components. The oil and whiting method used in the railroad industry in the early s was the first recognized use of the principles of penetrants to detect cracks. The oil and whiting method used an oil solvent for cleaning followed by the application of a whiting or chalk coating, which absorbed oil from the cracks revealing their locations. Soon a dye was added to the liquid.
Dye Penetrant Testing in Chennai
Banjara Hills, Hyderabad Plot No. Hyderabad, Telangana. Dariya Ganj, New Delhi No. D Colony, Ahmedabad No. Ahmedabad, Gujarat.