The polishing and plating of metals; a manual for the electroplater, giving modern methods of polishing, plating, buffing, oxydizing and lacquering metals, for the progressive workman . imony or alloys, such as brittania, or aluminum,should never be cleaned in the same potash used for othermetals, as it eats them away rapidly, and the other metalsare then dipped in a solution of metal, instead of potash, sothat the object of the dipping is defeated. The hot water tank is of wood and generally stands closealongside of the potash. The end of the steam pipefrom the potash coil is turned down into
The polishing and plating of metals; a manual for the electroplater, giving modern methods of polishing, plating, buffing, oxydizing and lacquering metals, for the progressive workman . imony or alloys, such as brittania, or aluminum,should never be cleaned in the same potash used for othermetals, as it eats them away rapidly, and the other metalsare then dipped in a solution of metal, instead of potash, sothat the object of the dipping is defeated. The hot water tank is of wood and generally stands closealongside of the potash. The end of the steam pipefrom the potash coil is turned down into it, as shownin Fig. 37, and a separate steam pipe is also run into it, foruse in case the steam passing through the potash coil is notsufficient; both these pipes have open ends and valves forcontrol. On a cold morning the steam passing through the THE POLISHING AND PLATING OF METALS. 31 potash will be lukewarm water when it gets to the watertank, so that the live steam from the auxiliary pipe will speedup matters very profitably. The overflow pipe is made in thesame way as already described for the dipping tank; it issubject to the same conditions and the same kind of fixtures. Fig. 37. Hot Water and Potash Tanks, showing steam connections and overflow, are used. As both these tanks are frequently boiling, caremust be taken that they are not filled so full that they willboil over; about six inches margin should be left in fillingthe tanks. They should be large enough, to take the largestwork the shop will handle. Two by three feet and two feetdeep is a convenient size for the ordinary jobbing shop. We have still the scrubbing and rinsing tanks to are made rather shallow, say eighteen inches deep, andprovided with cold water only. They are generally on so as to bring the top about twenty-eight inches from the 13: THE POLISHING AND PLATING OF METALS. floor, and have scrubbing boards on which to place thework while it is being scrubbed with pumice stone beforegoin
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectelectro, bookyear1904
