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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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Disclosure Of Surface Treatment Technology For Aluminum Alloy Die Casting Parts

The effects of the catalyst, fluoride, mn2+, ni2+, zn2+, PO4 and $literal on the phosphating process of aluminum were studied by 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 forming, which is an effective promoter for the phosphating of aluminum: fluoride can promote film formation, increase membrane weight and refine grain. Mn2+ and ni2+ can obviously refine the grain, so that the phosphating film is homogeneous and dense, Die Casting Parts and the appearance of phosphating film can be improved. When the concentration of zn2+ was low, the film could not be film or film-forming difference, and the membrane weight increased with the increase of zn2+ concentration. The PO4 content has a great effect on the phosphate film weight and enhances the PO4. The content of the phosphating membrane increased.

Alkaline polishing solution of aluminum is studied, the effect of corrosion inhibitor and viscosity agent on polishing effect was compared, and the alkaline solution system with good polishing effect was obtained, Die Casting Parts and the additive which can reduce operating temperature, prolong the service life of solution and improve polishing effect is obtained for the first time.

The experimental results show that adding proper additive in NaOH solution can produce good polishing effect. The exploratory experiment also found that the reflectivity of aluminum surface can reach 90% after DC constant voltage electrolytic polishing with NaOH solution under certain conditions, Die Casting Parts but there are some unstable factors in the experiment, which need further study. The feasibility of using the DC pulse electrolytic polishing method to polish aluminum under alkaline condition is explored, and the result shows that the leveling effect of the DC constant voltage electrolytic polishing can be achieved by using the pulse electrolytic polishing method, but the leveling speed is slow.

Environmental-friendly chemical polishing of aluminum and aluminum alloys the new technology of environmental-friendly chemical polishing with phosphoric acid as base liquid is developed, which realizes the zero emission of NOx and overcomes the quality defects of similar technology in the past. Die Casting Parts The key to the new technology is to add some compounds with special effects to replace nitric acid in the base solution.

To this end, we need to analyze the chemical polishing process of aluminum, especially to study the effect of nitric acid. The main role of nitric acid in aluminum chemical polishing is to suppress pitting corrosion and improve polishing brightness. Combined with the chemical polishing test in pure phosphoric acid, it is believed that the special substances added in phosphoric acid can inhibit pitting corrosion, Die Casting Parts reduce the overall corrosion, and must have a good whole and bright effect.

Electrochemical surface hardening treatment of aluminum and its alloys the process, properties, morphology, composition and structure of the amorphous composite conversion membranes of ceramic-like ceramics were formed in the anodic oxidation deposition of the neutral system, and the film forming process and mechanism were preliminarily discussed.


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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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