With the development of mining industry, pig iron classification in Our country has been very extensive, can satisfy the demand of machinery industry. In general, iron used to produce large coils of galvanized wire can be divided into two classes. A metal produced directly from iron ore and iron smelting, consisting of iron oxide, silicon dioxide, and other miscellaneous stones. When this ore is specially refined into metal iron, carbon, silicon, manganese, and other elements are mixed in, so that the refined material is called general pig iron, is also for the initial grade of the material.
Hot dip galvanizing, also known as hot dip zinc, is the method of forming a layer of zinc coating on the surface of the workpiece after oil removal and rust removal, showing a clean and infiltrating surface, immediately immersed in the plating tank of zinc melting in advance. Cold galvanizing is the same after the removal of oil, in addition to lure, showing no pollution, infiltration of the workpiece hung into a special electroplating tank on the cathode, the anode with zinc. Switch on the DC power supply, zinc ions on the anode migrate to the cathode, and discharge on the cathode, so that the workpiece is coated with a layer of zinc layer hot dip galvanizing method.
In daily life, what we can bend by hand is basically galvanized iron wire, not steel wire. It has a high zinc content, which ensures its good toughness and resilience, but also has ultra-high corrosion resistance, which can last for decades in outdoor environments. There are many practicability of galvanized iron wire, such as strong reliability, galvanized layer and iron together, form a special metallurgical structure, in the use and transportation process, can ensure that will not be mechanical damage.
And high-quality data are constrained by production costs and production conditions, so some electric welding mesh manufacturers do not meet this requirement, in this case, there is no way to improve product strength. In addition to data, and produce process, even if again good data, but the factory did not meet the requirements of production process in welding, also can form the product under the high pressure welding, so it is also a kind of strength on the decline, process conditions of different manufacturers also have very big difference, so it formed a shopping mall on the above products are differences of strength.
Therefore, when zinc reaches saturation in the solid melt, the two elements of zinc and iron atoms diffuse with each other, and the zinc atoms diffused into (or infiltrated into) the iron matrix migrate in the lattice of the matrix and gradually form an alloy with iron, while the iron diffused into the molten zinc liquid forms an intermetallic compound FeZn13 with zinc and sinks into the bottom of the hot-dip galvanized pot, that is, zinc slag. When the workpiece is removed from the zinc leaching solution, the surface of the pure zinc layer is formed, which is hexagonal crystal, and its iron content is not more than 0.003%.
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Electrode application range is wide, can realize a variety of materials, a variety of profiles and a variety of joint forms of welding. (1) Welding between low carbon steel, low alloy steel, medium carbon steel, alloy steel and other metal materials or dissimilar metal materials can be achieved. The weld has good comprehensive mechanical properties, and the tensile strength can reach more than 400MPa. ⑵ Can realize the welding of large plate, steel frame, plate – tube, rod – rod, tube – tube and other profiles. ⑶, can realize docking, Angle, lap, T joint and other joint forms of welding. ⑷ mainly suitable for flat welding.(5) it can surfacing the parts of wear failure, so as to obtain the surface surfacing layer with melting depth, smooth surface and excellent performance. ⑹ It can be realized that no bevel 1 ~ 6mm thick metal sheet single-side welding double-side molding.
The type of barbed rope is mainly reflected in the specification of the wire diameter, the thicker the diameter of the barbed rope produced is shorter, at the same time, the price is cheaper, mainly because the production efficiency is relatively high, because the price of the barbed rope is calculated according to the weight when it is sold. On the contrary, the finer the diameter of the wire, the longer the price is higher.
The main factors causing metal rust: relative humidity of the atmosphere at the same temperature, the percentage of water vapor content and water vapor saturation content in the atmosphere, known as relative humidity. Under certain relative humidity, the corrosion rate of metal antirust oil is very small, but higher than the relative humidity, the corrosion rate increases suddenly. This relative humidity is called the critical humidity. When the humidity in the atmosphere is higher than the critical humidity, the metal surface will appear water film or water droplets, if the atmosphere contains harmful impurities, dissolved in the water film, water droplets, electrolytes and aggravate corrosion.
In daily life, what we can bend by hand is basically galvanized iron wire, not steel wire. It has a high zinc content, which ensures its good toughness and resilience, but also has ultra-high corrosion resistance, which can last for decades in outdoor environments. There are many practicability of galvanized iron wire, such as strong reliability, galvanized layer and iron together, form a special metallurgical structure, in the use and transportation process, can ensure that will not be mechanical damage.
