Grinding technique for aluminum alloy drum of external-drum type plate-making machine
A grinding process and plate-making machine technology, applied in optics, anodizing, instruments, etc., can solve the problems of reducing grinding productivity, increasing grinding wheel clogging, and low melting point, so as to improve processing accuracy and smoothness, simplify procedures, and reduce costs Effect
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Embodiment 1
[0033] The grinding process of the aluminum alloy light drum of the external drum plate-making machine is carried out in sequence according to the following steps:
[0034] 1) Cover and seal screws made of non-aluminum materials with silica gel.
[0035] 2) Carry out conventional metal machining and treatment; including rough turning, high temperature aging treatment, semi-finishing turning, medium temperature aging treatment, assembly and milling, low temperature aging treatment and finish turning; the temperature of high temperature aging treatment is 360°C, time 28h; the temperature of the medium temperature aging treatment is 230°C, and the time is 27h; the temperature of the low temperature aging treatment is 130°C, and the time is 28h.
[0036] 3) Surface cleaning treatment and anodic oxidation pretreatment;
[0037] Surface cleaning treatment is: degreasing and degreasing treatment; the treatment solution is one or more mixed solutions of sulfuric acid, phosphoric acid...
Embodiment 2
[0053] Embodiment 2 is basically the same as Embodiment 1; the difference only lies in:
[0054] 1. The temperature of high temperature aging treatment is 400°C, time 20h; the temperature of medium temperature aging treatment is 270°C, time 21h; the temperature of low temperature aging treatment is 180°C, time 20h.
[0055] 2. The surface cleaning treatment is: degreasing and degreasing treatment; the treatment liquid is:
[0056] HNO 3 (nitric acid) 10g / L
[0057] HF (hydrofluoric acid) 8g / L
[0058] Sodium persulfate 7g / L
[0059] Sodium dodecylbenzenesulfonate (surfactant) 3g / L (all kinds of surfactants can be used,
[0060] Such as anionic surfactants, cationic surfactants
[0061] zwitterionic surfactant, nonionic surfactant)
[0062] Processing temperature 60°C
[0063] The processing time is 100s.
[0064] The concentration of NaOH (sodium hydroxide) in the alkaline treatment solution before anodic oxidation is 30g / L, the complexing agent added is sodium gluconate...
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