* In-process cleaning (optional) Welded assemblies effectively cleaned by an in-process acid pickle
Henkel Corporation has introduced Bonderite[R] Deoxidine[R] 216[TM], an industrial strength, phosphate-free acid pickle
designed to clean inorganic soils such as rust, laser scale, weld scale, and unwanted oxides off of metal surface in preparation for conversion coating.
The acid pickle
stage uses Rust Remover 4, a liquid acid pretreatment for pickling and descaling ferrous metals.
Interestingly the acid pickle option gives real performance benefits over shot blasting and fabrication.
I was assured by Henkel that good phosphating could be achieved, provided the acid pickle was followed by a neutralisation / de-smut stage in the same way as the ACC cleaning / pickling process, noting that phosphate pre-treatment / electro-painting needs the additional activation, phosphating, rinsing and sealing rinse stages.
* Activator S2 as an acid pickle
and surface conditioner
* Provide effective and stable inhibition of the acid pickle
Another subject is mentioned in the connection with the use of the acid pickle
. It is reported that a big damage happened, when Alloy 42 was treated in such a solution.