Iron corrosion; anti-fouling and anti-corrosive paints . e laid onthe attainment of uniform strength in the linseed varnish,and occasional tests should be made with the down the paint with turpentine should not heresorted to, since this treatment diminishes the proportion oflinseed varnish, and the paint is rendered less should driers be added in any form, but the varnishshould possess in itself sufficient drying power to make suchadditions superfluous. Liquid driers in particular, by reason IRON-CORROSION AND ANTI-CORROSIVE PAINTS. 198 of their richness i
Iron corrosion; anti-fouling and anti-corrosive paints . e laid onthe attainment of uniform strength in the linseed varnish,and occasional tests should be made with the down the paint with turpentine should not heresorted to, since this treatment diminishes the proportion oflinseed varnish, and the paint is rendered less should driers be added in any form, but the varnishshould possess in itself sufficient drying power to make suchadditions superfluous. Liquid driers in particular, by reason IRON-CORROSION AND ANTI-CORROSIVE PAINTS. 198 of their richness in lead compounds, are very unfavourable tothe durability of the paint, and cause premature decay. The author has no intention of f^iving a string of recipesfor anti-corrosive paint, but will only deal generally with theoperations of mixing and grinding, and mention severalmechanical appliances for these purposes that have behavedwell in practice. At the conclusion of this section will befound sundry particulars relating to various paints in Fig. 52.—Paint-mixing macliine. In addition to the qualities already specified, the pig-ments employed must be perfectly dry and free frommoisture, and be in the finest possible state of are placed in a suitably large vessel containing thelinseed varnish, where the two are mixed intimately togetherby means of a stirrer. For large quantities, such as aregenerally employed in the preparation of anti-corrosive 194 lEON-COREOSION AND ANTI-COBEOSIVE PAINTS. paints, hand mixing is too cumbrous, tedious and costly,and is advantageously superseded hj mechanical appliances,such as that shown in plan in Fig. 51, and a vertical sectionin Fig. 52. In this smooth-walled mill two twisted annular beaters,engaging one with the other, rotate in opposite directions,and by the stirring, separating, turning, rolling, pushing,and working action they exert on the materials ensure the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcorrosionandanticorr
