The Difference Between Hot-dip Galvanized Welding Mesh And Cold-dip Galvanized Welding Mesh Is Introduced in Detail

Electric welding mesh is now widely used in the polystyrene board system for external insulation of building exterior walls. If it is a face brick finish, galvanized electric welding mesh must be used. Which is less likely to rust and which has a longer service life?

The hot-dip galvanized electric welding mesh is to galvanize the electric welding mesh under heating. After melting the zinc into liquid state, immerse the electric welding mesh into it, so that the zinc will form mutual infiltration with the base metal and combine very closely. It is not easy to leave other impurities or defects in the middle. It is similar to that the two materials are melted together at the coating part, and the coating thickness is large, which can reach 100 microns, so it has high corrosion resistance. There is no problem in salt spray test 96h, Equivalent to 10-15 years under normal environment. However, for the cold galvanized electric welding mesh, the electric welding mesh is electroplated at room temperature. Although the coating thickness can also be controlled to 10mm, the bonding strength and thickness of the coating are relatively low, so the corrosion resistance is worse than that of the hot-dip galvanized electric welding mesh.

Hot dip galvanized electric welding mesh, if used in face brick facing layer. It is laid in the plastering mortar to effectively strengthen the protective layer, and then the rear hot-dip galvanized electric welding mesh is directly fixed with the structural wall through the anchor, which transfers the surface load to the base wall, and the thermal insulation layer can also be effectively protected. When subjected to external force, the damage occurs in the protective layer and is absorbed by the plastering mortar layer. Due to the good holding and binding force of galvanized electric welding mesh and plastering mortar, the tensile strength in horizontal and vertical directions is reasonably enhanced, and the strength of face brick bonded base course is greatly improved. Therefore, this product can effectively enhance the structure, effectively take into account the unity between the crack resistance and the requirements of the face brick for the base strength, and meet the needs of the stability, safety and durability of the thermal insulation system.