Galvanized wire coating rough, passivation film is not bright, bath temperature is too high. If the cathode current density is too high, zinc content in the bath is too high or sodium hydroxide and DPE content is too low; Electroplating solution with solid particles or excessive foreign metal impurities, will lead to such problems. Solution: If the large roll galvanized wire to the above coating is rough, there may be solid particles in the plating solution. If the roughness of the part is severe, the current density may be too high.
The duration of the protective effect of galvanized layer on large roll galvanized wire is closely related to the coating thickness. Generally speaking, in the dry main gas and indoor use, the thickness of galvanized layer only 6-12μm, and in the environment is more severe conditions, galvanized layer thickness needs 20μm “to be up to 50μm”. Therefore, the influence of environment should be considered when choosing the thickness of galvanized layer.
The bonding and anchoring function between the cold rolled ribbed steel bar and concrete is outstanding. In reinforced concrete structure, the width of black iron wire processing crack is smaller than that of circular steel bar, even than that of hot rolled thread steel bar. Therefore, it is used in the component, which fundamentally eliminates the phenomenon of steel wire sliding and damage, and improves the load bearing ability and crack resistance ability of the component end.
Paint on the galvanized layer, the binding force between each other and the baking temperature of the paint has a great relationship, after galvanized coating alkyd paint, adhesion is no problem. Galvanized amino paint, paint adhesion is not good. Do two bottom two surface, adhesion is ok, if the two bottom two surface to two bottom three surface, that is, more paint, more baking once, again test adhesion is very poor, poor to the paint from the galvanized layer of pieces torn off.
Spring steel wire with high carbon quality carbon structural steel or carbon tool steel wire rod production, according to the use of spring strict control of its chemical composition, gas content and non-metallic inclusions. In order to reduce the appearance defect and decarbonization layer, the billet of consumption rod should stop the appearance grinding, and if necessary, stop the peeling.
Wire flexibility and elongation is good, can withstand the pressure of mechanical operation, in our country’s industry has played a very important role. There are many kinds of iron wire, the most common is to give black iron wire, galvanized iron wire. The corrosion resistance of the outer coating is effectively improved, but the phenomenon of crevice corrosion will be found after long-term use.
Galvanized wire coating rough, passivation film is not bright, bath temperature is too high. If the cathode current density is too high, zinc content in the bath is too high or sodium hydroxide and DPE content is too low; Electroplating solution with solid particles or excessive foreign metal impurities, will lead to such problems. Solution: If the large roll galvanized wire to the above coating is rough, there may be solid particles in the plating solution. If the roughness of the part is severe, the current density may be too high.
(2) Packing and binding galvanized shaft wire order notes: ① the galvanized iron wire shall not be damaged when the tightening. (2) Stop the use of more than two strands of galvanized iron wire around the operation method. ③ The diameter of galvanized wire for pulling should not be less than 4mm, and the diameter of galvanized wire for binding should not be less than 2.6mm. (4) Galvanized iron wire shall not be used as waist hoop down reinforcement, usually not used as a whole binding. Warehouse galvanized wire is mainly used to block and distinguish the function of the area, warehouse galvanized wire is one of the primary use of galvanized wire, warehouse galvanized wire primary layout features are as follows: layout: Column mesh frame, column to choose square steel pipe, galvanized wire frame is also a small square pipe as the data, column and mesh frame corresponding direction are welded connecting ear piece (flat iron), column and mesh frame through the connection of the ear piece bolt fixed, column bottom welding plate, column bottom plate through expansion bolts and fixed on the ground.
At present, there are two main kinds of electric galvanized wire products, hot dip galvanized wire and electric galvanized wire. The difference is that the way of galvanizing is different, and the quality of the products is different. Hot dip galvanized wire zinc layer thick, corrosion resistance is stronger, but correspondingly, the price is high. Galvanized wire zinc coating thin, corrosion resistance is poor, but the price is low.
