The modern electroplater; a complete book considering fully the elementary principles of electro deposition of metals, their practical application and industrial use . Fig. 135.—Finishing Composition in Cake Form (A. P. Munning & Co.) may also be secured, as is the case of the other com-positions, in barrel quantities, the mixture of greaseand abrasive having the same qualities as are foundin the cake Tig. 136.—Cutting Down Composition in Cake Form(A. P. Munning & Co.) Lump pumice is shown at Fig. 134 and the crocuscomposition used for coating buffing wheels is made Speed of Buffs 221 1
The modern electroplater; a complete book considering fully the elementary principles of electro deposition of metals, their practical application and industrial use . Fig. 135.—Finishing Composition in Cake Form (A. P. Munning & Co.) may also be secured, as is the case of the other com-positions, in barrel quantities, the mixture of greaseand abrasive having the same qualities as are foundin the cake Tig. 136.—Cutting Down Composition in Cake Form(A. P. Munning & Co.) Lump pumice is shown at Fig. 134 and the crocuscomposition used for coating buffing wheels is made Speed of Buffs 221 11,000 10,000 9,000 8,000 7,000 ^6,0005,0001,0003,0002,000 V A V . \ \ 0 v\ \ \ V \ A A k-o \ \ r \ \ V \ h \ \ h *c V^S5&* ks ?n>> \ V s^ & S v f& $o( 7n *^ r^ 6 7. 10 II 12 13 14Diameter of Buff 15 16 17 18 Fig. 137.—Speed of Buffs(Courtesy of A. P. Munning & Co.) The above chart shows at what speed any size buff mustbe run in order to give a predetermined peripheral or cuttingspeed at the face. For example, suppose we have an 18-inchbuff and wish to have 14,000 feet of the edge of the buff passthe surface of the work per minute. Taking the 18-inch lineon the base, and following it up to where it crosses the 14,000curve, then following horizontally to the left, we find thatthe buff must have a speed of about 3,000 revolutions perminute. 222 T
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectelectro, bookyear1920
