. The cleaning and electro-plating of metals; . Fig. 2—Electro-plating Dynamo,Manufactured by General Electric Company, Schenectady, N. Y. are put up as near to the tank as possible, andshould be shut off v^hile putting work into tank,and then be turned toward the strongest pointuntil a suitable current is obtained. The Cleaning and Electro-Plating of Metals 19 It is quite essential in a large plating roomto have a voltmeter, and also an ampere meter,which will show the plater the exact amount. Fig. 3—Ammeter for Electro-plating by Weston Electric Company, Newark, N. J. of cu
. The cleaning and electro-plating of metals; . Fig. 2—Electro-plating Dynamo,Manufactured by General Electric Company, Schenectady, N. Y. are put up as near to the tank as possible, andshould be shut off v^hile putting work into tank,and then be turned toward the strongest pointuntil a suitable current is obtained. The Cleaning and Electro-Plating of Metals 19 It is quite essential in a large plating roomto have a voltmeter, and also an ampere meter,which will show the plater the exact amount. Fig. 3—Ammeter for Electro-plating by Weston Electric Company, Newark, N. J. of current he is getting. By means of an ac-curate ammeter, the amount of metal actuallydeposited can be determined. NICKEL PLATING. The solution should be made up by dissolv-ing ^ of a pound of nickel-ammonium sulphate 20 The Cleaning and Electro-Plating of Metals (double nickel salts) in 1 gallon of water, whichwill bring the density up to about 6° or 7° Be,and adding a small amount of boric acid, mak-ing a fine, bright nickel. In some instances,agitated solutions are of great importance, forthe reason that a higher current density maybe used, and so decrease the time, prevent pit-ting ; the work will come out just as bright as ina still solution. Anodes: Anodes are very important in nickelsolutions, owing to the fact that the solutiondoes not readily dissolve the metal, as thisaction takes place only by the aid of the cur-rent, and as nickel sulphate will not conductelectricity easily
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