In general, there are four factors that affect the surface resistance before salt spray: 1, whether the release agent is treated clean 2, if the pickling department is organic acid, whether the residual film is treated clean 3, the degree of neutralization, whether the oxide film is produced 4, film thickness, and quality, so the process can only be adjusted from these four aspects

In addition, I think the surface resistance has a lot to do with the die casting. I don't know how the die casting premise of your company is. If it is not satisfactory, the pickling time should not be too long, and the time of film forming department should be lengthened appropriately. As for the formula, it is still recommended to use organic acids for pickling, which will be less messy. After all, magnesium alloy is easily eroded. As for the skin film, it will be better to reduce the salt composition appropriately and make the skin film as thin as possible