Anti-corrosion measures for 6061 aluminium bus-bar

The corrosion of 6061 aluminium bus-bar caused by silicon can be completely avoided and controlled. As long as the raw materials and alloy components are effectively controlled, the ratio of magnesium to silicon is within 1.3-1.7, and the parameters of each process are strictly controlled, the segregation and dissociation of silicon are avoided, so that silicon and magnesium can form a favorable Mg2Si strengthening phase as far as possible.
 
If the appearance of silicon corrosion point is found in 6061 aluminium bus-bar special attention should be paid to surface treatment. In degreasing and degreasing process, weak alkaline bath fluid should be used as far as possible. If conditions are not allowed, the soaking time in acid degreasing solution should be shortened as far as possible (it is doubtful that qualified aluminium alloy profiles should be placed in acid degreasing solution for 20-30 minutes, while doubtful profiles can only be placed for 1-3 minutes). In addition, the pH value of washing water in the future should be higher (pH > 4, control Cl-content). The corrosion time should be extended as far as possible in the process of alkali corrosion. The nitric acid light-out solution should be used in neutralization and the electro-oxidation treatment should be speeded up in sulfuric acid anodization. Thus, the dark gray corrosion point caused by silicon is not obvious and can meet the application requirements.
 
Henan Signi Aluminum Co., Ltd. produces 6061 aluminium bars. All kinds of moulds are complete, the initial order quantity is small, and the price is superior. Welcome to order.