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OSNA-Cu 58®:
Galvanising/Scrap disposal |
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- Galvanising
For certain applications, finished products made of machining copper, have to be galvanised with silver, nickel, gold etc. Various types of copper behave differently in the electrolyte.
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OSNA-Cu 58® Te
In some electrolytes, such as silvering baths, the deposit turns black. This discolouration can be avoided by galvanic pre-coppering of the part, whereby the copper coating must be free from pores. This can be achieved by using suitable electrolytes (e.g. bright copper bath) at a minimum plating thickness of 15 µm.
OSNA-Cu 58® S
With this copper material untreated parts are also liable to blackening in silver baths. This can also be avoided by galvanic pre-coppering, as with OSNA® Cu 58 Te. |
- Scrap disposal
When working with OSNA-Cu 58® Te (copper tellurium), great care must be taken to strictly segregate copper scrap. Tellurium copper renders normal unalloyed copper useless in recycling furnace.
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