In the process of drawing galvanized steel wire, its strength limit is increasing, and the elongation is decreasing sharply. The quality of the finished steel wire is mainly determined by the carbon content, heat treatment and total deformation of the wire. The smelting method of steel and the manufacturing method of steel wire also have some influence on the mechanical properties. In the process of reusing galvanized wire to make steel wire, the change of its mechanical properties is basically similar to that of drawing with the same optical wire.
When the lead wire is galvanized, although its strength limit and toughness are weakened, the strength and toughness of the hot-dip galvanized steel wire are high after the subsequent drawing process is still relatively good. The mechanical properties of the steel wire made from the pre-drawn hot dip galvanized steel wire of middle size are not stronger than those of the galvanized steel wire after drawing.
The strength limit of the steel wire pulled out by the zinc plated lead wire is lower than that of the steel wire drawn by the same size optical wire, and this difference increases with the reduction of the diameter of the steel wire, especially for the fine steel wire, the difference is greater. For the galvanizing method of building steel mesh, the annealing plate should be sent to the pickling workshop first, and the oxidized hot galvanized plate on the surface of the steel plate should be removed with sulfuric acid or hydrochloric acid. After pickling, the barrier mesh immediately enters the tank to soak and wait for galvanized, and then can prevent the mesh from oxidizing again.
Construction steel mesh after pickling, washing, extrusion monotone, monotone, hot dip galvanized into the zinc pot, the temperature has always been maintained at 445-465℃, and then oil coating and chromizing treatment. The quality of hot-dip galvanized net produced by this method is obviously higher than that of wet galvanized net, and it is only valuable for small-scale fence production.
Different materials are used in different ways, so the single sheet galvanizing method is now more popular, and is more suitable for the galvanizing of metal mesh. Galvanized wire mesh is widely used in industry, agriculture, aquaculture, construction, transportation, mining and other occupations. The mesh surface is smooth, the structure is robust, and the integrity is strong. It has strong corrosion resistance, oxidation resistance, durability, simple equipment, no fading, no deformation and other characteristics.
Post time: 12-04-24