Application

· 1 Preface · Imitation gold plating, usually first plating bright nickel layer or “bright copper-bright nickel” as the bottom layer, and then plating 1-2μm thinner copper alloy, such as cyanide plating Copper zinc, copper-tin or copper-zinc-tin alloy method to obtain a decorative imitation gold plating layer. In recent years, the galvanized layer dyeing and…

Trivalent chromium sulfateChromium plating has the advantages of high corrosion resistance and close to the color of the hexavalent chromium plating. It is used instead of hexavalent chromium Chrome chrome plating has been widely used. Because the domestic development and use of sulfate trivalent chromium plating is relatively short, the independent research and development process…

Application of MBR in the upgrading and transformation of electroplating wastewater treatment facilities, a metal in Yuyao City, Zhejiang Province, mainly engaged in hardware and plastic partselectroplating Surface processing company, with a daily wastewater output of 250m/d (10h/d in a single shift). Due to the different types of pollutants in the wastewater discharged by the…

In some plastic electroplating plants in the south, there are often small white spots on the plated parts, which are difficult to wipe off. Affect the appearance of the product, and even lead to scrap. Although the conditions of the electroplating process are normal, it is unavoidable, and even appears in large quantities. This is…

Nowadays, the proportion of bathroom fittings electroplating in electroplating production is also increasing. Bathroom fittings usually use copper alloys, zinc alloys, and aluminum alloys as base materials, and all have a certain electroplating production process. Various failures are often encountered in the electroplating production process. The author briefly talks about the failure of copper alloy…

Because of its inertness, gold has almost no effect on various acids and alkalis. It has strong corrosion resistance, low contact resistance, excellent electrical conductivity, and is easy to weld. The field has important application value as an electronic reliability guarantee. Many electronic products with high safety requirements in the aviation and aerospace fields (such…

The significance of the phosphorus content of 01 acid copper anode The phosphorus content of acid copper anodes is mostly 0.1% in China. Foreign studies have shown that the phosphorus content in phosphorus copper anodes is more than 0.01%. There is a black film formation, but the film is too thin and the binding force…

Plating is a very versatile industry. With the continuous improvement of customer requirements for printed boards, printed board manufacturers are facing various new problems. Customers’ requirements for gold-plated plugs, in addition to the thickness of the usual nickel-gold plating layer, the bonding force and consistency of the plating layer, and the hardness of the plating…

The method of using acid solution to remove oxide scale and rust on the surface of steel is called pickling. It is a way to clean metal surfaces. Generally, the parts are immersed in an aqueous solution such as sulfuric acid to remove oxides and other thin films on the metal surface. It is the…