Iron and aluminum are quite common materials that need to be coated in the market, so when our workpiece needs to be coated with these two materials at the same time, how do we choose the right degreaser product.
1.First of all, consider the iron material, if the workpiece does not need pickling material, such as: cold-rolled plate, we will prioritize the elimination of acid degreaser, then is the choice of strong alkali degreaser or weak alkali type degreaser also need to consider the specific material of aluminum.
2.If it is die-cast aluminum, we should choose weak alkaline degreaser, so as to avoid over-corrosion of the workpiece and lead to blackening and hanging ash; When we use weak alkaline degreasing agents, we generally need to warm the bath temperature to 40-60 degrees to ensure a good degreasing effect.
3.For aluminum alloy rolled plates or extruded profiles, in addition to considering weak alkaline degreaser, you can also choose medium-strong alkaline degreaser; Because this kind of substrate workpiece is different from the die-cast aluminum workpiece, it is not easy to become black and hang gray, but it also needs to be considered to avoid excessive corrosion.
In short, when we consider the choice of degreaser for iron and aluminum collinear, we need to conduct a comprehensive evaluation according to the specific product, the specific material, the production line and whether there are heating conditions and other factors. 
Post time: Sep-21-2023