Once there was a sixth plant Falck Pickling . What were they doing there? Click on photo to enlarge it and read the article published in the journal of the City.
We talked about it because of our little experiment electroplating, which is to deposit a metal on a thin layer of another metal.
The liquid solution in which case the process of electroplating is called galvanic . This solution is typically made of metal and salt water (for us, copper sulphate) to be deposited. The electrodes are elements of conductive material immersed in the solution that will allow the current electricity to flow through the solution. The electrode connected to the negative terminal of the battery is called cathode and is formed from the object to be coated (-). The electrode connected to the positive terminal of the battery is said anode, and can be made of the same metal that you want to submit the object to be coated, or another metal or graphite.
The zinc coating can be achieved for small items or large structures, such as car bodies. The plating baths may have very low or very high concentrations, while currents range from milliamps for small items, to many amps for large plating baths.
The surface to be coated must be completely clean. Impurities in fact do not allow the metal to settle and adhere to the object. This operation is called pickling . It makes a mechanical cleaning with metal brushes or abrasive pads followed by a chemical cleaning. Are immersed in the plating bath cathode (-) , formed from the object to be covered (we have it directly connected to - terminal of the battery), el ' anode (+) , formed by another object conductor. The two electrodes are connected to a generator. When you turn on the generator, the current begins to flow through the electrodes and the solution, and the metal begins to settle. After
electroplating, the object must be washed to remove residues of the plating bath.
are immersed in the plating bath to the cathode (-), formed from the object to be filled, and the anode (+), formed by another conducting object. The two electrodes are connected to a generator. When you turn on the generator, the current begins to flow through the electrodes and the solution, and the metal begins to settle.
After electroplating, the object must be washed to remove residues of the plating bath.
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