BThis paper has discussed coating pretreatment technological process of magnesium alloys and it has obtained a kind of converting film treatment method on magnesium alloys, and has a reference action to actual operation of magnesium alloys painting.
This is a major introduction on adopting the disposal method of agglutination and precipitation to synthetically harness the waste water coming from the pre treatment for the bus components coating and the handling of spraying lacquer in room by selecting Al 2(SO 4) 3·18H 2O as inorganic flocculant and polyacrylamide as macromolecular one.