Pre-treatment cleaners are generally alkaline in nature, although acidic ones can be used if required. Alkaline cleaners generally provide the best performance and way of removing grease from the surface of the substrate.
The level of alkalinity and the type of chemical used to give the pH level in solution will decide on the types of substrate it is applicable for. Highly caustic pre-treatment cleaners should not be used on aluminium as it can cause a range of undesirable reactions. Non-caustic alkaline cleaners can be used on most substrates.
The pre-treatment cleaners contain surfactants to help with the degreasing. They also contain inhibitors, helping to prevent damage to the substrate during the soak process.
There are, generally, two types of pre-treatment cleaners: soak cleaners and electrocleaners.
The operating temperature is also relevant to the effectiveness of the cleaning products.
Founded in 1994, Alutech are industry leaders in anodising and electroplating process chemistry. We offer a range of pre-treatment cleaning chemicals for substrates including aluminium and steel.