Post time: 20-02-23- 6, passivation to remove hydrogen parts should be passivation after the removal of hydrogen, passivation before the application of 1%H2SO4 or 1% hydrochloric acid activation 5~15s. Passivation shall be treated with colored chromate unless otherwise specified in the design drawings.
1. Principle. Because zinc does not change easily in dry air, and in humid air, the surface can form a very dense film of zinc carbonate, which can effectively protect the interior from corrosion. And when the coating is damaged for some reason and the matrix is not too large, the zinc and steel matrix form a micro cell, so that the fastener matrix becomes the cathode and is protected. It is widely used in automobile transportation and other industries, but what is needed is the trivalent chromium passivation layer, zinc nickel alloy plating closed coating, reduce the harmful and toxic layer of hexavalent chromium passivation.
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; Solid particles or excessive foreign metal impurities in the electroplating solution can cause such problems. Solution: If the coating of large galvanized wire 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.
- Packing: 25KG/ bale, plastic inside and woven outside.
- The production and processing process of the blade thorn rope is complicated, which requires the cooperation of all departments, and the production cycle is relatively long. Whether galvanized rope or stainless steel rope, because of the relatively simple structure, the degree of mechanization in the production process is relatively high, so it is also a relatively big difference in price.
Post time: 16-05-231. The diameter of the raw material and the thickness of the diameter are directly affected;
According to the galvanized iron wire manufacturer, galvanized iron wire is the selection of excellent low carbon steel, through drawing molding, pickling rust removal, high temperature annealing, hot galvanized, cooling and other processes. The following points should be paid attention to in the use of galvanized iron wire:
- ③ The galvanized iron wire shall not be damaged when it is tightened.
- Uses: used in industry, agriculture, animal husbandry, highway, forest protection
- Heavy hexagonal net is made of low carbon steel wire galvanized large wire braid, the tensile strength of the steel wire is not less than 38kg/m2, the diameter of the steel wire can reach 2.0mm-3.2mm, the surface of the steel wire is usually protected by hot dip galvanizing, the amount of galvanizing can reach 500g/m2.
- The electrolytic deposition of large roll galvanized wire zinc-chin layer is basically the following two kinds of electrolyte: zinc is mainly in the form of zinc cation hydration in the solution; Zinc is mainly present in solution as complex anion. Acid electrolyte belongs to one class, complex cyanide and zincate electrolyte, and nickel sulfate electrolyte constitute the second class. Cyanide electrolyte and acid electrolyte are of great significance.
- Although to be able to reduce the production cost, but the strength of the whole product will have a great lack of, so in this case will also let it have a great strength decline. Of course, in the shopping mall, the higher the intensity of the data in production, the higher the implementation of standards, naturally there will be certain progress in price.
- The strength of the hook net should be satisfactory: when the vehicle is traveling at 80 km/h, the hook net will not fall into the river when it bumps against the railings at a 15 degree Angle. The shape and color of the hook mesh should be in harmony with the surrounding natural environment. The phenomenon planning of important Bridges should be done well.
- 1, barbed rope protection net center line along the road within the land boundary 20 to 50 cm set.
- Many luxury cat, dog, parrot, bird and flock cages use iron square pipes. Luxury cages use iron square tubes that are usually used as the frame of the cage body, and then touch welded wire on each face. The characteristics of the square tube cage are more beautiful shape design, cage body more solid, surface treatment methods.
- Even PVC coated barbed rope in ultra wet areas, will play an unexpected result.
- 2.0*2.0mm indicates that the two strands are 2.0mm silk, and the barbed wire wrapped around the strands is also 2.0mm silk.
Compared with other galvanizing processes, the cleaning requirements for low carbon steel wire before galvanizing are low. However, under the current trend of increasing the quality level of galvanized layer, some pollutants brought into the plating tank are obviously harmful. Because cleaning galvanized coating wastes a lot of time and reduces the production, it is very important to properly clean and effectively rinse the substrate before electroplating.
The application range of positive and negative twisting barbed rope is also very wide, is a good choice for purchasing barbed rope, then positive and negative twisting barbed rope compared with other barbed rope advantages? The following Haorong barbed rope factory for you to introduce the positive and negative twisting of the three advantages of barbed rope
Product features: strong structure, flat surface, with good corrosion resistance, oxidation resistance. The material of small hexagonal mesh is the same as that of other hexagonal mesh, which is generally made of low carbon steel wire, stainless steel wire and galvanized steel wire as raw materials by the hexagonal mesh machine.
Hardness is a commonly used property index in mechanical properties of metal materials. The iron wire factory introduces a fast and economical test method for hardness testing. However, for the hardness of metal materials, there is not a unified and clear definition including all test methods at home and abroad. In general, the hardness of a metal is often considered to be the resistance of the material to plastic deformation, scratches, wear, or cutting.
Generally speaking, in dry main gas and indoor use, the thickness of galvanized coating is only 6-12μm, but under poor environmental conditions, the thickness of galvanized coating is 20μm, can reach 50μm. Therefore, environmental factors should be considered when choosing the thickness of galvanized layer. Galvanized layer after passivation treatment, can naturally form a layer of bright, beautiful color passivation film, can obviously improve its protective function, decorative.