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        Process difference of galvanized steel wire rope
        2021-02-03

        Electro-galvanizing is to obtain the coating by electrodeposition through external power supply, and the obtained coating is composed of fine pure zinc crystal grains. Cold galvanizing (or electro-galvanizing) is zinc plated by electroplating or other methods at room temperature. Theoretically speaking, electro-galvanizing can obtain zinc layers of any thickness. At present, the amount of zinc on the practical electro-galvanizing can reach 1200g/m2. , Generally, the amount of zinc on the electro-galvanized layer can reach 750g/m2. The difference of galvanized steel wire rope process.


        Galvanizing relies on physical thermal diffusion to form a coating. First, an iron-zinc compound is formed, and then a pure zinc layer is formed on the surface of the iron-zinc compound. The maximum amount of zinc on hot-dip galvanizing is only 593g/m2. Hot-dip galvanizing will reduce the mechanical properties of the steel wire. Galvanized steel wire ropes that require high strength and high corrosion resistance are mostly twisted by electro-galvanized steel wires. Hot-dip galvanizing is zinc plating in a molten zinc bath at 450-480 degrees.


        The essential difference between hot-dip galvanized steel wire rope and cold-dip galvanized steel wire rope is that compared with cold-dip galvanizing, the hot-dip galvanized zinc layer has better corrosion resistance due to the zinc-iron alloy layer. The surface condition of the hot-dip galvanized steel wire rope is blackish because of the hot-dip galvanized iron alloy. The electroplated surface has no chemical reaction, so it is still the original color of zinc and looks brighter. Under normal circumstances, the zinc layer of hot-dip galvanizing is thicker and the corrosion resistance is better. The zinc layer of electrogalvanized zinc is thinner and has poorer corrosion resistance. (Unless the zinc layer of cold galvanized steel also reaches the level of thick zinc layer) The use and price difference between hot-dip galvanized steel wire rope and cold-galvanized steel wire rope is the question that our users care about, whether it is better to electroplated steel wire rope or hot-dip galvanized steel wire rope ? Can not be generalized, depending on what purpose you use. For example, the support steel wire in the water pipe is better electroplated, it looks good, and the cost is low; if it is a power tower, it should be hot-dip galvanized. Because hot-dip galvanizing has good corrosion resistance, it can be used for 30 to 40 years. Although the zinc content on the surface is high, the hot-dip galvanized steel wire rope has a layer of zinc-iron alloy on the surface, and its anti-corrosion ability is much higher than that of the cold galvanized steel wire rope. At present, the market is generally electroplated steel wire ropes, because hot-dip galvanizing is expensive, and dealers have low profits in selling hot-dip galvanized steel wire ropes and sell well. However, the anti-corrosion ability of electrogalvanized steel wire ropes in the air is only a year or a half. But the hot-dip galvanized steel wire rope has long anti-corrosion ability. In terms of appearance, the appearance of cold galvanized steel wire rope is brighter and better-looking, but the appearance of hot-dip galvanized steel wire rope is black. Therefore, all users must pay attention when purchasing galvanized steel wire rope. In fact, the anti-corrosion ability of cold galvanized steel wire rope is not as good as smooth oiling. In fact, if the price of smooth galvanized steel wire rope is 8700.00/ton as the base, cold galvanizing will add 1000.00 tons, and hot-dip galvanizing will add 1000.00 tons on this basis.


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