1. The principle of hot-dip galvanized steel grating is different
Hot-dip galvanizing, also known as hot-dip galvanizing, is to melt zinc ingots at high temperature, add some auxiliary materials, and then immerse the metal structural parts into the galvanizing tank, so that a layer of zinc layer is attached to the metal components. The advantage of hot-dip galvanized steel grating is that the adhesion and hardness of the galvanized layer are better.
Cold plating; that is, electroplating, that is, the zinc salt solution is electrolyzed to coat the plated parts. Generally speaking, no heating is required, and the amount of zinc applied is very small, and it is easy to fall off in a humid environment.
2. The properties of hot-dip galvanized steel grating are different
Hot-dip galvanizing is a chemical treatment, which is an electrochemical reaction. Cold galvanizing is a physical treatment, just brush a layer of zinc on the surface, so the zinc layer is easy to fall off. Hot-dip galvanizing is often used in construction.
Continuous hot dip galvanizing process: steel → heating → cooling to galvanizing temperature → galvanizing → cooling
Cold galvanizing is electro-galvanizing, only 10-50g/m2, and its corrosion resistance is much different than that of hot-dip galvanizing. The price of electro-galvanizing is relatively cheap.
Hot-dip galvanizing is the galvanizing of the surface of the steel body under the condition of hot-dip, its adhesion is very strong, and it is not easy to fall off.
3. The process of hot-dip galvanized steel grating is different
The steel gratings, galvanized steel gratings, platform steel gratings, etc. produced by Youhui Power Grid Steel Grating Factory are manufactured by large-scale CNC machines and computer-controlled high-voltage resistance welding machines. There are two types of tread plate installation methods: welded connection and bolted connection. Gutter covers are available in a variety of models to suit different span loads and requirements. Hot-dip galvanizing is to remove the oil, pickling, dipping, and drying the workpiece, and then immerse it in the molten zinc solution for a period of time, and then put it out.
Cold galvanizing, also known as electro-galvanizing, is to use electrolytic equipment to deoil and pickle the workpiece into a solution of zinc salt, and connect the negative electrode of the electrolytic equipment; place a zinc plate on the opposite side of the workpiece to connect to the electrolytic equipment. Positive, turn on the power, and use the direction of the current to move from the positive to the negative, which will deposit a layer of zinc on the workpiece.
4. The effect of hot-dip galvanized steel grating is different
The difference between galvanized products: hot-dip galvanized surface is not as delicate and bright as cold galvanized, but the thickness of zinc layer is dozens of times that of cold galvanized.
5. Hot-dip galvanizing emits less pollutants. The contaminants of hot-dip galvanizing are mainly waste acid from pickling workpieces.
The pollutants of cold galvanizing mainly include waste acid of pickling workpiece, waste electroplating solution, waste passivation solution, etc.