Summary for gold hard anodising Discussion
Gold hard anodising is the focus of this question about 7075 aluminum dies for pharma thermoforming machines. Prakash Pujare asks for process details, chemicals, parameters, and metallurgy for a golden hard anodize that reportedly co-deposits silver in the oxide structure to seal porosity, improve non-stick behavior, and add antibacterial properties. The thread excerpt provided contains only the question and no answers, so there is no confirmed process recipe or technical guidance to summarize beyond the stated goal. The key takeaway is that the poster is seeking practical information on a specialized anodizing variant for tooling performance and hygiene, but the excerpt does not include any expert responses or validation of the silver-deposition claim.
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Q. Looking for process help on GHA. For dies of pharma thermoforming machines.
Can anyone share some information on golden hard anodising of 7075 aluminum?
All I know is it’s a hard anodising with simultaneous deposition of silver into the cervices at the center of oxide crystals, which does the job of sealing and closing off porosities, thus improving the non-stick properties and also improving anti-bacterial properties. Any information on the chemicals, process parameters, metallurgy, would be welcome.
Prakash Pujare
– Mumbai, India
September 14, 2023