process to highlight the points to the surface of workpieces magnetizzabili defective

摘要

1527745 Coated particles SCHWEISSINDUSTRIE OERLIKON BUHRLE AG 9 Dec 1975 [10 Dec 1974 16 May 1975] 50517/75 Heading B2E [Also in Divisions C4 and G1] A particle 1 for use in magnetic flow detection (see Division Gl) is of iron with a first coating 2 of a lacquer e.g. a phenolic resin or an epoxy resin containing titanium dioxide and a second coating 3 e.g. an acrylic resin containing fluorescent pigment. Reflecting glass balls may be embedded in the second coating.