1. Difference in processing technology
First of all, the difference in processing technology is that hot-dip galvanizing is a certain period of time for the workpiece to be degreasing, pickling passivation, dipping, and air-drying, and then immersed in molten zinc solution for a certain period of time, which can be clearly stated. Cold galvanizing, also known as electro-galvanizing, is to use electrolytic mechanical equipment to deoil, pickle and passivate the workpiece and put it into an aqueous solution of zinc salt, and place a cold-rolled steel plate on the opposite side of the negatively connected workpiece of the electrolytic mechanical equipment. Connect to the front of the electrolytic mechanical equipment, connect to the switching power supply, and use the amount of current to move the galvanized product from the positive to the negative. dozens of times. Corrosion resistance is also dozens of times that of galvanized. In addition to the difference in product characteristics, steel gratings produced by different processing techniques also have a very big difference in price. The board is cheaper.
2. Hot-dip galvanizing, also known as hot-dip galvanizing, dissolves zinc ingots at high temperature, puts in auxiliary materials, penetrates the metal components into the galvanizing tank, and attaches a zinc layer to the metal components. The advantages of hot-dip galvanizing depend on its strong anti-corrosion ability and good adhesion and strength of the galvanized layer. Cold plating is also known as electroplating technology, that is, the zinc solution is coated on the electroplated parts by electrolysis. Generally, no heating is required, and the amount of zinc is very small, and it is easy to fall off in the wet and cold natural environment.
3. Hot-dip galvanizing For galvanized grating, hot-dip galvanizing steel grating factory strongly requires hot-dip galvanizing. Hot-dip galvanizing is an organic chemical solution and belongs to electrochemical corrosion.
Cold galvanizing is the solution of physics, the surface is coated with zinc, and the zinc layer is easy to fall off. Hot-dip galvanizing is selected in the construction of construction projects. Continuous hot-dip galvanizing process: stainless steel plate → acid tank cleaning → heating → cooling to galvanizing temperature → galvanizing → cooling Cold galvanizing is electro-galvanizing, only 10-30g/m2, and its own corrosion resistance constant pressure ratio Hot dip galvanized away. The price of electro-galvanizing is relatively cost-effective. Hot-dip galvanizing is that the steel body is galvanized on the surface under the hot-dip standard, which has strong adhesion and is not easy to fall off.
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