Zinc is a silver-white metal, brittle at room temperature, soluble in acid and alkali, known as amphoteric metal. Pure zinc is more stable in dry air, and small in humid air or water containing carbon dioxide and oxygen. A thin film layer of basic zinc carbonate will be formed on the surface, which can delay the corrosion rate of zinc layer. The corrosion resistance of galvanized layer in aqueous solution of acid, alkali and sodium chloride is relatively strong. It is also not resistant to corrosion in atmospheres containing carbon dioxide and hydrogen sulfide and in Marine atmospheres; In high temperature and high humidity air and containing organic acid atmosphere is small, galvanized layer is also easy to be corroded.
- Correction is the hot galvanized wire or cold galvanized wire secondary treatment, the surface after correction is smooth and shiny, and the tensile strength is stronger, so that it is not easy to break. Now it is usually used for screen industry will be changed, which can improve the quality. In addition, clothes rack, communication, high voltage line will be changed to prevent breakage.
Post time: 04-11-22Therefore, when the zinc reaches saturation in the solid melt, the two elements of zinc and iron atoms are diffused 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 the iron, while the iron diffused into the molten zinc liquid forms an intermetallic compound FeZn13 with the zinc and sinks into the bottom of the hot 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%.
Post time: 29-09-22- 2. Select according to features
PVC coated barbed rope is widely used for railway highway protection, but also for safety protection of rivers, embankments and seawalls, so as to better protect the safety of people and animals.
- ① The diameter of galvanized iron wire for pulling should not be less than 4mm, and the diameter of galvanized iron wire for binding should not be less than 2.6mm.
PVC coated barbed rope is widely used for railway highway protection, but also for safety protection of rivers, embankments and seawalls, so as to better protect the safety of people and animals.
- D, coating adhesion; The zinc layer of the plating parts should be firmly combined with the base metal with sufficient adhesion strength, and will not fall off or bulge after the hammer test.
The weight calculation method of hexagonal net is: the weight calculation method of hexagonal net: silk meridian.× silk meridian.× base x length x width ÷2=kg base: 1/2′=2.151′=1.273/4′=1.65/8′=1.875/4′=1.091′x1/2′ : 3′=0.4 silk warp. x silk warp. X 2x length x width ÷8×3=kg
Different supports are used for different installation environments. In the past, the blade barbed wire was not easy to fix, and the installation environment was often steep. Therefore, special tools must be used to fix the blade barbed wire to prevent it from being improperly installed.
Most of the production enterprises or large public places, they can play a defense hook mesh in the choice of time, often will hook mesh quality in position, so galvanized hook mesh this product few people are interested in, but does this show that galvanized hook mesh is not useful?
- 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.
Hexagonal net structure can be used for slope support, excavation, rock face net mine support form, slope vegetation (green color), railway road isolation block, it can be made into a cage, cushion, used for rivers, flood dam and seawall erosion protection and storage reservoir, river closed cage. Driving and guiding rivers, river flood disaster is a major water and river erosion of destruction, resulting in flooding, resulting in a great deal of loss of property by the amount of soil and water dissipation. Because of this, in dealing with these problems, the application of the habitat grid structure becomes a solution plan, which has the potential to protect the bank forever.
- For example, in gray iron, its carbon exists in iron ore in graphite condition, the crack is often gray, soft and strong, simple filtering, suitable for casting. In white iron, its carbon and iron together into iron carbide, crack appears white, very strong and brittle quality, for the material of malleable steel. The alloy grade consists of various alloying elements with different compositions and structures.
Now when most people buy barbed rope, they choose blade barbed rope. Why is this? From the material, the blade barbed wire process is made of hot-dip galvanized steel plate or stainless steel sheet to press the sharp blade sheet, and the high-tension galvanized steel wire or the blade barbed wire is made of stainless steel wire as the core wire. Because the shape of the gill net is not easy to contact, so it can reach an excellent protective barrier effect.
Post time: 07-04-23No matter how old dogs are, they seem to love to touch noses with people and other animals. In fact, dogs touch noses as a way of socializing, just like humans shake hands and hug when they meet. But dogs don’t nuzzle every human or every animal. They pick and choose who to nuzzle. If they don’t like you, or don’t know you at all, they won’t touch your nose. However, adult dogs will touch almost every puppy’s nose, and they will not only touch the puppy’s nose, but also smell the puppy’s body.
- And for the external insulation system is used in the brick veneer, as for the role of first should also be anti fall off followed by anti cracking, so should choose the grid 10×10×0.6, these are some experience choice, grid conversion from the national regulations of steel mesh specifications, using steel level conversion. The index of wire mesh size, wire warp, square meter steel content, galvanized amount, etc., mainly consider the corrosion resistance of wire mesh and the safety of the system! Galvanized wire mesh is more critical than wire diameter, galvanized amount is very important, must be hot plating, welding after plating is better than plating after welding, as for wire diameter, comprehensive consideration of site construction and to meet the needs of safety, 0.6 ~ 0.7 is better.
Post time: 04-04-23