Construction of modern buildings and buildings is not possible without metal structures and metal.Metal - one of the oldest materials that people have used since ancient times.With the development of technologies to the use of metal products has grown significantly: the set is made of metal structural components and workpieces.Channel bars, pipes, metal corner and I-beams are widely used in the construction of buildings.Therefore, private developers and interested in how to cook or I-beam channel.
- Use sill
- concept sill sills Welding
- use of I-beams I-beams
- welding I-beams
Channel is a metallic article,which is obtained by pressing and hot rolling in the production.Channel of the other products different kind of rolled metal U-shaped cross-section, which allows you to achieve a combination of high performance engineering with a minimum of metal.
material for the manufacture of U
If you want to look like channels and the way they are, then you need to turn to their classification.There are 5 series of sill: a special series, with a particular slant inner edge of shelves, economical series of parallel-sided shelves, light series with parallel edges of shelves and a series of parallel-sided shelves.Stainless steel channels are also characterized by high hardness and high performance.
as important structural elements of the channels used in the machine tool industry, mechanical engineering, car building and construction.Good strength characteristics allow the use of channels in the construction of large buildings on the basis of the core, the construction of bridges, large spans installation in residential and industrial buildings.
in the construction industry channel is used for the assembly of metal structures.Perforated channels allow you to create a strong metal away from the production site.Channel used for repair work, manufacturing and warehouse equipment rack, reinforced concrete structures, the creation of electric power pylons, oil rigs and bridges.
Wide range of use sill allows for its production and stainless steel.Stainless steel channels are proven himself as a product for use in aggressive environments with increased risk of corrosion.Curved channels are widely used in the construction of scaffolds.
To learn how to cook the two channels, you have to choose one of two options.The choice depends on the operating conditions, in other words from the loads acting on the structure, its length and the degree of responsibility.Channels are likely to be subjected to bending or eccentric contraction, because it is possible to implement a pure compression if the load applied in the center of the core section of the product.
before welding it is necessary to consult with GOST and review all the necessary parameters.You certainly know that any welding connections weaken the original design.Welding seams will thus have a greater strength than the main metal, but at the boundary fusing metal loses 10-20% own strength.
the purpose of welding electrodes used sills made SSSI, which allow you to create the best quality seam.However, with these electrodes need to be able to work.If you previously did not know how to weld the channel by the electrode and never used these electrodes, it is pre-trained on workpieces that are similar to the design of the future.
electrodes are made of metal rods that have a special coating that affect the quality of the weld, its resistance, durability and resistance to rust, and also serve as a tool for arc welding.According to him the current flows.High-quality seam without electrodes can not be performed.Today there are several types of mechanized welding channels, however, are still popular method of manual arc welding.
SSSI electrodes used for welding of critical points.Structures that are cooked this electrode made of carbon and low alloy steels.These electrodes are recommended for use in welded construction work at temperatures down to minus 40 degrees Celsius.The current must be constant, polarity - reverse.
lion's share of the construction is made to make this method of welding.Before welding sill using electrodes SSSI need to completely rid the metal from rust and dirt.Welding is performed on the polar side of a short arc.Take note that during the practical training, you can spend close to five kilograms of electrodes for one week before to strengthen the channel.
to connect the two channels by welding flanges inside edge you need to cut or to weld with a gap.Between the parts common to leave a gap of 3 mm.If you do not, welding metal will slide, and the subsequent cleanup Bulgarian flush trigger that will weaken the seam.
To properly make a seam weld to start thicker items, then you can take on more subtle.Keep in mind that all you need to scald lining the contour.If this is not done, the details are obtained between the gaps, which may get the moisture, which provokes the development of crevice corrosion.A corrosion that had accumulated over the years, is able to break the structure.
If you do not know how to cook a channel without an assistant, you can apply for this clamp.Cook can tack.Perform one end sill seam, and then the second.Proceed to the other end similarly.Then one by one you can tack through the two sides of one meter.If the seam weld completely else gets going.Cook must be from different sides and different ends.
use of I-beams
Double T beams called the most efficient profile for the elements that work on a bend in the plane of the greater rigidity, because compared with other profiles it has a large moment of resistance.I-sections are used in the construction of that work in compression as an integral or separate section.That is why before you connect the girders, you need to learn about the features of this process.
concept of I-beams
Metallurgical plants depending on the geometric parameters produces several varieties of I-beams, which correspond to a specific field of application.Ordinary I-beams have a slope of the inner edge of the shelves and are designated according to their height numbered.
The range includes profiles of the number 10 to number 60. The majority of I-beams under the terms of rolling technology wall is much thicker than required by the terms of their sustainability.The small width of the shelves provokes that the rigidity of the beam is significantly different from the principal axes.If you want to know how to cook two I-beam, remember that it is necessary to ensure the stability of the beam and provide its intermediate binding.
Shirokopolochnye I-beams have the brink of shelves that are placed parallel to each other.Rolled like Beams of three types: shirokopolochnye, normal and colonies.The height of the beam profiles of up to 1,000 millimeters.Column profiles ratio of width to height shelves have more than beam that increases the resistance element in the plane of the smallest stiffness and require no additional fixing.
T-sections steel mills are not rolled, they are prepared by slitting shirokopolochnogo I-beam.They can be used as a separate element truss chords.For hoists and cranes hanging using special Beams with increased thickness to prevent bending shelves.
I-beams are made up of three elongated leaf elements, which include wall and the two belts.Specially designed for high beams ribs that increase the stability of the compressed elements.In these beams the main seams are butt joints and wall zones, and fillet welds connecting zone and the wall.
During the creation of a welded I-beam, first learn how to calculate the I-beams.Accepted weld joints belts and walls because these joints are the most responsible.When assembling the belt and the walls requires that the longitudinal axis of the sheets that will dock, lay in a straight line.Keep offset joints beyond permissible norms did not go.
This expose the gap in the drawing.Assembled joints must be welded by hand using high-quality electrodes, semiautomatic or automatic submerged arc.Once you have welded zone and wall they are sent to the beam assembly.
I-beams collected from the three main elements, which are made to weld seams machine.Be sure to set the transverse ribs.Apply two risks in the middle belt of the distance should be leveled thickness of the vertical wall.A meter from each other, set and attach the assembly angles.You can also use the cable to eliminate the gap between the belt and the wall.
But the most important point is the welding procedure joints beams.If you do not remember how to cook I-beams, it is necessary to leave nezavarennymi waist seams on the length of 1.5 meters on each side of the joint.Mounting joints must be created in sequence.First weld joint of the vertical wall, then - the joint zone, because he received more stretched.
After such manipulations brew seam zone, which operates in compression.After welding the joint beams must be Dowar waist seams on nezavarennyh sites.Joints I-beams a high-quality electrodes.Welding together beams made to perform in a similar way, but with the responsibility to relate to each welding process.
Thus, if you are a decisive criterion is the speed and simplicity, not quality, then you can connect two open U-joint.But the use of electrodes SSSI standard GOST allows to get a nice and reliable seam.When connecting I-beams weld seams are the main elements of the machine.
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