Method for nondestructive testing of surface defects, e.g. cracks in Metallic Parts.

摘要

Procedure for checking the presence of cracks Of Metal non destructively.Comprising: (a) Implement a solution with one or several Dyes with no Emission under Ultraviolet Light to check on the metal surface; (b) to eliminate the excess of dye solution in perceiving the penetration of the dye in the surface defects; (c) implementing a reveals (b) on the surface; and (d) revealed to the metal surface irradiated with Ultraviolet LightWith a Wavelength between 350 and 390 mm to BlackEN the surface defects in the coating Light Emitter.The Dyes are Dyes Red and Oil red 4379 conc Oil, Oil Network, and the Network tax; Solvent Dyes (Choose between non-ionic surfactants Tergitol 15-s Tergitol 15-s - 5 and 9),Phthalate Esters (or diisodecyl Phthalate Dioctyl Phthalate) and Oxygenated Solvents as higher alcohols tridecanol Absorbent Coating; the developer is rich in contrast to Daylight,Composite Powder and optical brighteners; and optical brighteners are chosen between wn and calcofluor White White New Solvents for RWP and polishes are chosen from isopropanol, acetone and 1,1,1-trichloroethane.