w beam guardrail cost

analysis of w beam guardrail cost

The w beam guardrail cost is different from the brand, the material and the production process.

Semi rigid high speed guardrail has many advantages, such as large resistance, long service life, convenient installation, convenient maintenance and so on. Safety facilities are widely used. The raw material is a steel sheet road guardrail, which is easy to oxygen in the air.

What is the specific function of the rusting of the guardrail for decades without discoloration in a variety of harsh environments? This is what this period should say, what is the surface anticorrosion of the corrugated fence? The surface corrosion treatment of wave guardrail usually includes three methods: hot galvanizing, spraying, hot galvanizing and spraying.

Hot-dip galvanizing， The hot galvanized metal material is immersed in the zinc liquid for about 500 degrees, so that the metal surface layer is used for anticorrosion. Zinc has been developed for more than 100 years. Technology is relatively mature, and the treatment of highway guardrail has been adopted.

spray The powder is sprinkled on the workpiece by electrostatic powder spraying equipment, and the powder is evenly adsorbed under electrostatic action. On the surface of the workpiece, the powder coating is formed and the coating is smooth and solidified after high temperature baking. The spray surface is formed. three. Hot dip galvanizing Hot dip coating process is galvanized, then spraying. This effect is better than the first two anticorrosion effects, of course High cost of w beam guardrail cost

w beam guardrail

w beam guardrail cost in china

Hot dip galvanizing: 1 Introduction hot dip galvanizing is also called hot dip galvanizing, it is steel components immersed into molten zinc liquid to get metal cover. A method of layer. In recent years, with the rapid development of high voltage transmission, transportation and communication, the protection of iron and steel parts The demand for hot-dip galvanization is increasing, as the demand is getting higher and higher.

2 the protective properties of hot-dip galvanized layer usually electric galvanized layer thickness 515 mu m, while the hot-dip galvanized layer is generally above 35 m, or even up to 200 u m. Hot galvanizing with good coverage,The coating is compact and has no organic inclusion. It is well known that the mechanism of zinc's anti atmospheric corrosion is mechanically protected and electrified.Study on atmospheric corrosion protection, under the condition of zinc layer on the surface of ZnO, Zn (OH) 2 and auragreen protective film, a certain The corrosion of zinc is slowed down to a degree, and the protective film (also called white rust) is destroyed and a new film will be formed.

When zinc When the destruction of the layer is serious, when the iron matrix is endangered, zinc has electrochemical protection to the matrix, and the standard potential of zinc is -0.76V. The standard potential of iron is -0.44V, and zinc is dissolved in the anode as the anode is formed when zinc and iron are formed, and iron is used as a cathode. To protect. It is obvious that the corrosion resistance of hot galvanizing to the metal iron of the matrix is better than that of galvanizing.

3 formation of hot-dip galvanizing layer, The process of forming the hot galvanizing layer of the process is the process of forming the iron - zinc alloy between the iron matrix and the outside pure zinc layer. The iron and zinc alloy layer is formed when the surface is hot dipped, so that the iron and the pure zinc layer are well combined, and the process can be made.

It is simply described that when the iron workpiece is immersed in the molten zinc solution, the first form of zinc and alpha iron (body center) is formed at the interface. Solid melt. This is a crystal formed by the dissolving of the zinc atom in the solid state of metal iron in the solid state, and the two kinds of metals. There is a fusion between the children, and the gravitational attraction between the atoms is small.

Therefore, when the zinc in solid melt saturated, zinc The two elements atoms diffuse to each other and migrate into the matrix lattice by the diffusion of zinc atoms in (or called infiltrating) iron matrix Gradually, the alloy is formed with iron, and the iron diffused into the molten zinc liquid forms an intermetallic compound with zinc. FeZn13, into the hot galvanizing pot, namely zinc slag. A pure zinc layer is formed on the surface when the workpiece is removed from the zinc dipping solution For six square crystals. The iron content is not more than 0.003%. Spraying: the production efficiency of the spraying is high. It is suitable for manual work and industrial automation. The application range is wide.

It is one of the most widely used painting methods in the fields of hardware, plastic, private, military, and ships. The spraying operation needs the environmental requirements of the dust free workshop with a million to 100 grade. The spraying equipment has a spray gun and a spray painting room. For, paint room, curing oven / drying furnace, spraying the workpiece conveying equipment, anti fogging and waste water, waste gas treatment equipment Etc.. The main problem in the spraying is highly dispersed paint mist and volatile solvent, which not only pollutes the environment, but also is harmful to the environment. In the health of the human body, and the waste of paint, resulting in economic losses.

Large flow and low pressure atomization spray is low atomizing gas Pressure and low air jet speed, low atomizing paint running speed improved the coating from the surface of the coating bounce out The situation. The coating rate increased from 30% to 40% of the ordinary air spray to 65% ~ 85%. Light leather finishing Spray the coating on the leather surface with a spray gun or a jetting machine.Guardrails: the guardrails are seen everywhere in our lives. This refers to the industrial "protective fence".

w beam guardrail manufacturers

Guardrail main The maintenance of equipment and facilities in factories, workshops, warehouses, parking lots, commercial areas, public places, etc.Protection and protection. The guardrail is usually made of steel, such as round steel pipe, square steel tube or press type steel plate. Surface treatment process:Fully automatic electrostatic powder spraying (that is, spray) or spray paint.

The raw materials used for the surface treatment of the anti collision guardrail for outdoor use are Waterproof material. The crashproof guardrail has a beautiful appearance and is not easy to rust. Barrier effective relief handling equipment Damage to equipment and facilities caused by accidental impact when shuttling through the shuttle, and in addition to the logistics handling equipment itself Protection, such as the protective fence on the edge of the loading and unloading platform, is dangerous to prevent the accidental fall of the forklift.