METHOD FOR PRODUCTION OF COMPACT LAYER OF ENAMEL COATING ON CAST ARTICLES

摘要

FIELD: metal processing.;SUBSTANCE: invention relates to production of enamel coating on cast metal articles by applying layers of enamel in powder form in electric field and firing. Method comprises applying on a cleaned surface of a metal article an enamel primer layer in form of powder in an electric field using sprayers until layer thickness reaches 100–150 mcm, then electric field is interrupted for reduction of space charge around metal article, followed by similar application of least two layers of powder coating enamel until total thickness of powder layer of enamel reaches a minimum of 750 mcm, wherein electric field is interrupted every time between steps of applying powder coating enamel, wherein interruption of electric field around metal article is performed by moving article to another application location.;EFFECT: method enables to create on metal articles in an electric field layers of enamel powder enabling, after firing, to obtain a compact layer of enamel coating on cast metal articles.;3 cl, 1 ex