| 摘要 |
Dry developer composition in powder form for use in penetrant inspection of surface flaws in bodies, consisting essentially of silica, preferably fumed silica, e.g. the material marketed as Cab-O-Sil M-5, and talc, particularly the powder marketed as Desertalc Mikro 507, in certain relative proportions. The resulting powder developer is particularly effective when employed in a dye penetrant inspection process comprising applying to a part surface a fluorescent penetrant, and especially a dye penetrant containing as carrier for the dye a biodegradable surfactant comprised of certain aliphatic oxyalkylated alcohols, followed by application of such dry developer to the part surface to provide bright fluorescent indications of surface flaws when inspected under fluorescent illumination. |
