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Aluminum Alloy Die Casting Parts Surface Treatment Process

Aluminum alloy Die Casting Parts surface treatment process
The effects of accelerators, fluorides, Mn2 +, Ni2 +, Zn2 +, PO4, and Fe2 + on the phosphating process of aluminum were studied by means of SEM, XRD, potential-time curve and membrane weight change. The results show that guanidine nitrate has the characteristics of good water solubility, low dosage and rapid film formation. It is an effective accelerator for phosphating of aluminum: fluoride can promote film formation, Die Casting Parts increase film weight and refine grain; Mn2 +, Ni2 + can obviously The Zn2 + concentration is low, the film can not be formed or the film is poor. With the increase of Zn2 + concentration, the membrane weight increases; the PO4 content is higher than that of the phosphate film Heavy impact greater, improve PO4. The content of phosphating film is increased.
Aluminum alkaline electrolytic polishing process of alkaline polishing solution system, compared with the corrosion inhibitor, viscosity agent on the polishing effect, Die Casting Parts the success of the polishing effect of a good alkaline solution system, and the first time to get the energy Reduce the operating temperature, extend the service life of the solution, while also improving the polishing effect of the additive.
The experimental results show that the addition of the appropriate additives in NaOH solution can produce good polishing effect. The exploratory experiment also found that the surface reflectivity of the aluminum surface can reach 90% after DC constant pressure electrolysis with NaOH solution under certain conditions, Die Casting Parts but there are still some unstable factors due to the experiment, which needs further study. The feasibility of using DC pulsed electrolytic polishing method to polish aluminum under basic conditions is explored. The results show that the pulse electrolysis polishing method can achieve the leveling effect of DC constant voltage electrolytic polishing, but its leveling speed is slow.
Aluminum and aluminum alloy environment-friendly chemical polishing to develop a phosphoric acid-based sulfuric acid-based environment-friendly chemical polishing new technology, the technology to achieve zero emissions of NOx and to overcome the quality of similar technology in the past there are defects. Die Casting Parts The key to new technology is to add some special compounds in the base fluid to replace nitric acid.
For this reason, it is necessary to analyze the process of chemical polishing of aluminum triacs, especially the effect of nitric acid. The main role of nitric acid in aluminum chemical polishing is to suppress point corrosion and improve the polishing brightness. The addition of special substances in phosphoric acid monosulfuric acid should be able to inhibit point corrosion and slow down the overall corrosion, Die Casting Parts and must have good leveling and brightening effect.
Aluminum alloy and its alloy. The process, properties, morphology, composition and structure of the amorphous composite film were studied by anodic oxidation of aluminum and its alloys in neutral system. Membrane processes and mechanisms.

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Contact us

Shenzhen Runpeng Precision Hardware Co.,Ltd

The contact:Susan Liao

Mobile:86-18925258235

Phone:86-755-29886925 

Fax:86-755-29886926

E-mail:sales@szrunpeng.cn

Web:www.sz-runpeng.com

Add:Building 69-70, 4th Industrial Zone, Mashantou, Gongming Town,Shenzhen,China.


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