Agent for treatment before aluminum alloy secondary anode oxidation screen printing and aluminum alloy secondary anode oxidation technology

The invention discloses an agent for treatment before aluminum alloy secondary anode oxidation screen printing, which is characterized in that each kilo of treatment agent solution contains the following raw materials by weight: 0.02-0.08g of cobalt salt, 0.01-0.08g of titanium salt, 0.01-0.20g of accelerating agent, 0.01-0.20g of silane and remaining weight of water. The invention additionally discloses an aluminum alloy secondary anode oxidation technology, which comprises the steps of cleaning, primary alkali etching, primary neutralization, primary anode oxidation, primary organic salt closing, treatment by using the treatment agent and screen printing of anticorrosive ink; and secondary alkali etching, second neutralization, secondary anode oxidation and the like. The treatment agent disclosed by the invention can form a reactive conversion layer on an aluminum material, the conversion layer can effectively resist the penetration of water and oxides and provide excellent anticorrosive performance, the ad