Electro-Plating, With Numerous Engravings And Diagrams ;
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The following is a typical copper-plating solu- tion : Dissolve 1 lb. of copper sulphate in \ gal.
Copper-plating. 93 of rainwater, then stir in enough liquor ammonia to throw down the copper in the form of a green precipitate, and dissolve this to make a blue liquid. Dilute this with an equal bulk of rain- water, then add sufficient potassium cyanide to destroy the blue tint and produce the colour of old ale. Filter the whole through calico and ex- pose to the action of air for twenty-four hou...rs, when it should be ready for use. Work it cold or hot.
Enough free cyanide should be present in the coppering solution to dissolve the copper anodes easily, but an excess of free cyanide should be avoided when the tension of the current is high, and the copper solution is impoverished. It is necessary to add some good cyanide of potassium to the solution from time to time, as found neces- sary, to keep up the supply of free cyanide ; but as cyanide itself does not freely dissolve the oxide of copper formed on the anodes, a little liquor ammonia also should be added occasionally to assist the action of the cyanide.
What to read after Electro-Plating, With Numerous Engravings And Diagrams ;?
You can find similar books in the "Read Also" column, or choose other free books by Paul N Paul Nooncree Hasluck to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The following is a typical copper-plating solu- tion : Dissolve 1 lb. of copper sulphate in \ gal.
Copper-plating. 93 of rainwater, then stir in enough liquor ammonia to throw down the copper in the form of a green precipitate, and dissolve this to make a blue liquid. Dilute this with an equal bulk of rain- water, then add sufficient potassium cyanide to destroy the blue tint and produce the colour of old ale. Filter the whole through calico and ex- pose to the action of air for twenty-four hou...rs, when it should be ready for use. Work it cold or hot.
Enough free cyanide should be present in the coppering solution to dissolve the copper anodes easily, but an excess of free cyanide should be avoided when the tension of the current is high, and the copper solution is impoverished. It is necessary to add some good cyanide of potassium to the solution from time to time, as found neces- sary, to keep up the supply of free cyanide ; but as cyanide itself does not freely dissolve the oxide of copper formed on the anodes, a little liquor ammonia also should be added occasionally to assist the action of the cyanide.
What to read after Electro-Plating, With Numerous Engravings And Diagrams ;?
You can find similar books in the "Read Also" column, or choose other free books by Paul N Paul Nooncree Hasluck to read onlineMoreLess
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