Company industry

Polishing technology

Copper chemical polishing is a polishing process that achieves brightness in the process of weak chemical corrosion on the surface of copper and its alloys. After chemical polishing, the copper surface is very smooth and bright, showing the true color of copper, and can even cause mirror reflection on the copper surface. Copper chemical polishing liquid is easy to maintain, safe to operate, and no harmful gas escapes.

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Passivation technology

Untreated copper workpieces are extremely easy to oxidize, discolor and corrode. This is because the outermost electron orbital of the copper element is in a non-full and stable state, and it is easy to lose one or two electrons and be oxidized.

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Passivation technology

Generally speaking, metals that are easy to ionize are easy to oxidize, that is, they are easy to corrode. In fact, this is not completely the case. Although some metals such as aluminum, magnesium, and chromium are easy to ionize, they are prone to generate a layer of corrosion products in the atmosphere or water. The thin film, thereby improving the corrosion resistance. The surface state of aluminum and aluminum alloys is changed by chemical or electrochemical methods, so that the dissolution rate is drastically reduced, and the corrosion resistance is improved. This process is called aluminum passivation treatment.

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Pickling technology

The method of using acid solution to remove the oxide scale and rust from the surface of steel is called pickling. It is a method of cleaning metal surfaces. It is usually carried out together with pre-passivating treatment. The acid used for pickling is sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid, chromic acid, hydrofluoric acid and mixed acid. Sulfuric and hydrochloric acids are commonly used.

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Passivation technology

After the treatment of oxidizing medium, its corrosion rate than before the original treatment has a significant decline in the phenomenon called the metal passivation. The passivation mechanism can be explained by the thin film theory, that is, the passivation is due to the interaction between the metal and the oxidizing medium, and a very thin, dense, well-covered passivation film can be strongly attached to the metal surface during the action.

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Electrolytic polishing technique

Electrochemical polishing is also called electric polishing, electrochemical polishing or anodic polishing. A method of anodizing metal parts by electrolysis to improve their surface finish.

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