When choosing self-drilling screws, it's important to consider several factors
Another advantage of double-ended studs is their versatility. They can be used for various applications, such as securing flanges, mounting equipment, or connecting structural components. Their dual-ended design allows for easy installation and removal, making them suitable for both temporary and permanent connections
There are many kinds of specifications for crack resistant welding mesh used in the construction industry. The commonly used specifications are as follows:
The characteristics of galvanized hexagonal net: easy to use; Save transportation costs. It can be shrunk into small rolls and involved in moisture-proof paper packaging, taking up little space. Coating thickness uniformity, stronger corrosion resistance; The construction is simple and does not require special technology; Strong resistance to natural damage and corrosion resistance and adverse weather effects; Can withstand a large range of deformation, and still not collapse. It has the function of fixed heat preservation and insulation.
Moderate rates of foam formation may be harmless. The small homogeneous particles with large denier in the tank can stabilize the foam layer, but the accumulation of too many solid particles will cause explosion. Using activated carbon mat to remove the surface active substances, or through the filtration of foam is not very stable, this is an effective measure; Other measures should also be taken to minimize the introduction of surfactant.
- One end of the wire must be clearly marked and the other end left on the outer layer for easy connection by other wires. Ask the factory to provide the corresponding quality inspection report before packing. Cold drawing is a kind of material often used in our life, especially in the construction of buildings. Cold wire drawing is used more in building materials, cold wire drawing testing standards are also different.
As we all know, the use of hexagonal net for protection can protect the natural environment while protecting the bridge, which can not only green the ecological environment, but also prevent soil erosion.
Hot drawing is the heating before the wire enters the die hole, mainly used for high melting point wire drawing; The temperature drawing is carried out by heating the heater to the range of temperature, mainly used for galvanized steel wire, difficult to deform drawing.
- To walk the bird, the bird owner needs to take it out for a walk every day, not to stay in one place for a long time, in order to increase its activity.
Its specific design layout principle is:
There is no adhesion test of powder spraying or fluorocarbon spraying on packaged galvanized wire, but there are two points for reference: first, in sealed or air-free environment, non-metallic volatiles can corrode zinc coating; Second, zinc at higher than 230 degrees (c) will cause the matrix metal brittle. And powder spraying and fluorocarbon spraying are to be baked at a higher temperature and in a sealed environment, causing rapid corrosion of zinc, resulting in loose corrosion film resulting in coating adhesion decline, and even lead to (matrix) steel wire brittle situation may exist.
First, the concept is different
- First, cold galvanized wire production process before treatment. Before galvanizing, a series of pre-treatment work on the steel wire is required, mainly including pickling, dissolution and brine or alkali washing.
Six features of spray blade stabbing rope
Post time: 01-08-22The custom application of hexagonal guardrail network plays a very important role in the channel slope protection work. According to the performance of the network, it can firmly grasp the soil so that it will not be lost, so the customized slope protection effect of hexagonal guardrail network is very significant, but also because of this advantage, it is widely used in such as channel protection, river bank protection, landslide protection. The custom structure of hexagonal guardrail is tightly combined, the appearance is not concave and convex, and it has satisfactory anti-corrosion, anti-oxygen and other capabilities. Construction without a lot of manpower and material resources, can be in the field of actual operation.
When laying steel wire mesh, according to the laying method from the middle to both sides in turn. Wall plastering engineering use wire mesh material is generally two kinds: one is electroplating, the other is hot dip galvanized. The former has low cost and a wide range of use. The cost of hot-dip galvanized material is slightly higher than that of electroplating, and the cost is high and the life is good to prevent rust. Hot dip galvanizing is in the case of heating plating. After the zinc is melted into liquid form, the base metal is immersed in it so that the zinc interpenetrates with the base metal and binds so tightly that there are no other impurities or defects left in the process.
Post time: 24-03-23- After a long time of use, it will not rust like the corrosion layer on the surface of hot dip galvanized barbed rope, because the internal material of stainless steel barbed rope is the same as the material on the surface.
Galvanized wire can be seen as iron wrapped in carbon. When extinguished, the surface layer is more shallow than carbon can contact with oxygen, produce carbon dioxide gas, and radiate the iron wrapped in it. The more carbon galvanized wire contains, the more obvious the phenomenon of spark. The carbon wrapped in iron acts as if it were an explosive in a charge bag, occasionally blowing the iron apart. Sodium and magnesium contain few flammable impurities, and when extinguished, they just glow.
Because of the high carbon content, simple cracks occur during water quenching, so double liquid quenching (water quenching + oil cooling) is mostly used, and oil quenching is mostly used for small cross section parts. This type of steel is generally used after quenching by medium temperature tempering or normalizing or in the surface quenching state. Mainly used for manufacturing spring and wear-resistant parts.
Small iron wire is very useful in our life, basically a lot of things will use iron wire, and iron wire can also be made into a lot of crafts, making ordinary iron wire become more aesthetic and artistic sense. Of course, the iron wire in the process of use, there will be rust, so galvanized black iron wire in the storage process, it is necessary to master the correct method.
- 3, look at the packaging, the normal packaging appearance is to use a layer of kraft paper paper with film to package our welded welding net, so that it will not be oxidized and rusted in transit.
Three: Packaging: moisture-proof paper, woven bag strip, other packaging can be packed according to customer requirements
Post time: 22-09-22The wire rod should be normalized or soxhlet processed, instead of spheroidal annealing for standard large ones. Soxhlet process is widely used in the heat treatment of the center, especially the products before drawing. Avoid decarbonization during heat treatment. After heat treatment, sulfuric acid or hydrochloric acid pickling is used to remove iron sheet. The coating (see smooth carrier) can be dip-lime, phosphating, borax treatment or copper plating.
- Appellation: Hook fence net is a variety of fence net. The diameter of the opposite side of each mesh is generally 6.5cm-14cm. The diameter of the wire used is generally from 3.5mm to 6mm. Wire material is generally Q235 low carbon wire. The iron wire is welded into black pieces of decorative hook mesh by ginning. The overall size of the mesh is 1.5 m X4 m, 2 m X4 m, 2 m X3 m. The general surface treatment is cold (electric) galvanized treatment. There are also hot dip galvanizing, dipping, spray. But overall, 99 percent is cold (electric) galvanized.
2, reduce the bivalent iron ion in the plating aid used for hot plating wire, reduce the formation of zinc slag
Are you familiar with galvanized wire mesh? Do you know what to pay attention to in the process of use?
- 1, we should pay attention to the welding mesh moisture-proof: if it is just the general outdoor air humidity, do not bother. If the weather is foggy, use dry cotton cloth to wipe the bead on the welding mesh; If it rains, you should dry the water when the rain stops. Try to maintain and prolong the life of the welding mesh.
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 large hexagonal mesh is called the stone cage net. Stone cage net before delivery, must be folded into a simple surface, packed compressed after delivery. Then put it in the right position to open, and then the block diameter suitable stone into the cage, the cover is tight, and then the various stone cage net and the adjacent stone cage net tied up.
- 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.