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WETPROCESS ENAMELS FOR CAST IRON
Experimental study of cover enamels
General conclusions from study of enamels with ground coats
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antimony oxide Based on Rg-7 basic composition Batch compositions best results black specks Borax Boric acid boric oxide increased CaF2 castings cent of lead Colored Enamels Based Compositions of Frits Constant portion melted cover coats D.—Effect of Varying decided tendency develop pinholes effect of replacing EFFECT OF VARYING Enamel number Fair feldspar by cryolite fluorspar fusible gave Ground coat number ground coat Rg-i increase of opacity lead oxide Melted composition melted frit Melted weights mill batch mill mix Oxide and Cryolite Red lead refractoriness replaced by cryolite Replacement of Feldspar Replacement of Flint replacing feldspar results obtained results were obtained Single-Coat White Enamels sintering Slight crawling Soda ash Sodium nitrate sodium oxide tendency to crawl texture and opacity Texture of cover tin oxide type of enamel types of ground Varying Boric Oxide Varying Feldspar weights of variables White Cover Enamels White-Cover Enamels zinc oxide zirconium oxide zirconium silicate