Treating process before spraying aluminum profile
A treatment process and aluminum profile technology, applied in the direction of pretreatment surface, device for coating liquid on the surface, coating, etc., can solve the problem of complex treatment of waste liquid, and achieve the effect of meeting the requirements of chromium-free
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[0011] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail through specific embodiments below.
[0012] The treatment process before spraying the aluminum profile in this embodiment sequentially includes the following steps:
[0013] Degreasing, first washing, alkali etching, second, third washing, neutralization, fourth washing, oxidation, fifth washing, sixth washing, semi-sealing, washing, dripping Frame, and then the subsequent spraying treatment can be carried out.
[0014] Among them, degreasing, neutralization, and oxidation use H with a mass concentration of 160g / l~180g / l 2 SO 4 , The temperature for degreasing and neutralization is room temperature; the specific operation methods of degreasing and neutralization can all adopt the technical solutions in the prior art in this field, which will not be repeated here.
[0015] Among them, the oxidation treatment...
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