February 19, 2020

Brief introduction of hot-dip galvanized steel guardrail

Hot-dip galvanized steel rails Hot-dip galvanizing, also known as hot-dip galvanizing, is attributed to chemical disposal. It is ablation of zinc ingots at high temperatures, then some auxiliary materials are placed, and the metal structural parts are immersed in the galvanizing bath. A layer of zinc is attached to the metal member. The advantage of hot-dip galvanizing is that the coating is thick, usually 30-60 microns, and its corrosion resistance is strong. The adhesion and hardness of the galvanized layer are good. Steel parts suitable for outdoor work, such as highway fences, electric power towers, large-scale fasteners and other relatively "rough" workpieces for long-term rust prevention, the earlier iron water pipes are also hot-dip galvanized.

"Cold plating" or "electroplating" is attributed to physical disposal, that is, the zinc salt solution is electrolyzed, and the plated parts are plated, usually without heating, and the amount of zinc is small, and it is very simple to fall in a wet environment. Cold galvanizing is also called electro-galvanizing. It is the use of electrolyzing equipment to remove the oil by oil removal, pickling and putting it into a solution of zinc salt, and connecting the negative electrode of the electrolysis equipment; placing the zinc plate on the opposite side of the workpiece is connected to the electrolysis equipment. The positive pole, when the power is turned on, and the current is moved from the positive pole to the negative pole, a layer of zinc is deposited on the workpiece. Cold-galvanized, the workpiece surface is smooth and flat, usually within 3-50 microns, the coating is thinner, so the corrosion resistance will be shorter. They are used for indoor rust prevention of parts, such as chassis bottoms, panels, small-scale fasteners, etc. http://news.chinawj.com.cn Brief introduction of hot-dip galvanized steel guardrail Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn Brief introduction of hot-dip galvanized steel guardrail

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