Corrugated steel is a very strong and durable steel, nowadays it is very much used in construction sites, it is a substitute material for defective concrete structures. Corrugated steel has many advantages, such as: very durable, shorten construction time, green and other advantages. Applied to a variety of environments, corrugated steel is now being used in rural fields, urban buildings, oceans and so on. And corrugated steel has a long service life, which greatly saves the maintenance cycle of the building, which saves money and is good for the environment. Below, I will give you a brief introduction to the types of corrugated steel components, corrugated steel production process and production equipment.
One, the type of corrugated steel components
China in the use of the three main structural forms: a. Corrugated steel plate splicing of large highway culverts (span 4m or more)? b. Annular corrugated pipe? c. Spiral bellows
Two, corrugated steel production process
The corrugated steel
Two, corrugated steel production process
Two, corrugated steel production process
Two, corrugated steel production process
Metal bellows is made of hot rolled steel plate (coil) made of corrugated sheet rolled into or assembled into a general thickness of 1.6-8mm, the steel is mainly Q235 (SS400), Q345, etc., at present, the common domestic processing methods for the rolling and molding of two kinds of rolling the molding method can be divided into two kinds of, a first into a round into a corrugated; the other is a first The steel plate molding for corrugated tile and then put together into a corrugated pipe? The first method is limited by the size of the billet and transportation conditions, its diameter can not be too large, the diameter of the pipe is generally 0.5-2.5?meters, the length of each section is about 3 meters.
Corrugated pipe is a hot rolled steel plate pressed into the corrugated, you can increase the stiffness of the pipe section and the strength of resistance to the pressure of the pipe axis, the factory using a hot dip galvanizing process and the construction site of spraying asphalt, two-layer anticorrosion treatment to ensure that the service life of the culverts constructed with such pipe section is known as the steel corrugated pipe culvert.
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Production process
Configuration type: rolled plate - shear processing - rotating drum - welding - rolling wave - welding flange - punching (drilling) - hot dip galvanizing - assembly - asphalt corrosion - backfill construction
Package? Type: coil - shear processing - cold forming - arc - punching - hot dip galvanizing - assembly - asphalt corrosion - backfill construction
Three, the type of corrugated steel production equipment
Cold-formed corrugated steel production equipment are: corrugated metal steel cold-formed forming unit (single corrugated cold-formed forming units), corrugated metal Steel plate arc machine (according to the design of the corrugated steel plate rolled into a certain arc), metal corrugated steel pipe rolling machine (whole pipe rolling machine), corrugated steel plate punching equipment.
Equipment cost: a single corrugated sheet cold bending molding unit 250-6.7 million yuan (hydraulic 700,000 yuan), the arc machine 20-30 million yuan (installed CNC plus 35,000)? The whole tube rolling machine 14-30 million punching equipment, some factories use a simple small drilling machine, multiple corrugated sheet drilling, two 35 rocker drilling more than 10,000 yuan; some manufacturers use punching equipment, multiple holes together, punching a 500-ton hydraulic press with a set of punching molds need to be 30,000 yuan.
Sheng steel corrugated culvert pipe production equipment manufacturers: Wuxi Hongda Cold Bending Machinery Manufacturing Co.
Fourth, the advantages and disadvantages of corrugated steel structure integrated pipe corridor
Advantages:
First, the construction cycle is short
Corrugated steel structure pipe corridor for the whole corrugated steel pipe (pipe diameter <3m) or assembled corrugated steel sheet, its materials are processed and produced in the factory, the site assembled, the construction speed is fast compared to the Traditional concrete structure cast-in-place pipe corridor construction cycle can save more than 30%.
Two, price advantage
Corrugated steel structure is a steel thin shell, its structure is simple, the project cost is low. Take 4x3.5m reinforced concrete pipe corridor as an example, its civil construction cost is about 80 million yuan per kilometer, while the use of φ4.5m corrugated steel structure round pipe instead, its civil construction cost is about 60~70 million yuan per kilometer, and its use function can fully meet the demand. In the cost than the traditional concrete structure has obvious advantages.
Three, adaptability
Reinforced concrete structure is prone to cracks and other diseases when the foundation produces uneven settlement deformation, while corrugated steel structure has the ability to adapt to the deformation of the foundation and the foundation, to avoid structural damage due to uneven settlement of the foundation base.
Fourth, standard environmental protection
Corrugated steel structure adopts factory standardized design and production, simple structure and easy quality control. Corrugated steel structure reduces the amount of natural materials such as cement, gravel, sand, etc., which protects the environment and is low-carbon and environmentally friendly.
Disadvantages:
I. Cannot eliminate leakage
The corrugated steel structure of assembled plate can't avoid the existence of gaps in the plate laps and bolt holes connection due to the use of plate laps and bolts connection fastening, although waterproofing measures such as asbestos pads and weathering adhesive sealing are adopted in the application of highway engineering, it still can't solve the problem of leakage well, and can't guarantee the durability of waterproofing effect. Waterproof effect of durability.
Two, the interface is difficult
The section of corrugated steel structure is dominated by round, pipe arch, oval, horseshoe, which leads to the design and processing of the interface between the trunk line corridor and branch line corridor is complex, and because of its special stress structure, the structural stress design at the interface is also more complex.
Given the many advantages of corrugated steel, corrugated steel is gradually replacing concrete. But after all, corrugated steel is still just beginning to rise of a building material, so to be accepted by the public still need a gradual process, and corrugated steel to completely replace concrete in the sewer, drainage, diversion, and other community facilities or to a very long period of time. As the market competition becomes more and more intense, in order to significantly reduce construction costs, corrugated steel will become a trend.
The above is about corrugated steel related content, I hope it can help you!
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