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What are the advantages of welded pipe unit
Release time:
2022-06-24 09:26
In the construction process of steel, welding is a big problem. Many pipes are very hard and difficult to bend, wasting a lot of space and position. In the past, welding used traditional equipment, but it was very laborious, the strength was not necessarily uniform during the welding process, and the pressing effect was very good. NowWelded pipe unitThe presence of the roll solves this problem.
Three advantages of welded pipe unit:
1. Simple operation. As long as other products can be operated, the rollers of the welded pipe unit will work, and only a simple switch can be operated.
2. If there are minor problems, there is no need to go to the manufacturer for after-sales service. It is very convenient to disassemble. If there is a small problem, just disassemble it and repair it yourself.
3. It is very safe to use. It will not damage our health due to improper use, and it is very convenient to carry. Now, welded pipe unit manufacturers make equipment so small that they can be carried around.
In addition, the roller of the welded pipe unit has a powerful function, that is, when the elbow is no longer needed, it can be disassembled into a jack-up machine.
The application of this equipment in daily production is very common, and the production of oil casing by welded pipe units has also become a trend, which is mainly inseparable from the advantages of welded pipe units. In general, the production of oil casing can be hot-rolled seamless steel pipe and welded pipe unit welding. However, the welding phenomenon of welded pipe unit is very common in daily life. Because the oil casing produced by welding will have welds, the problems of strength-toughness matching between base metal and weld, weld ash spot, weld groove corrosion and so on need to be solved. When welding oil casing, pay attention to avoid the above problems.
What should the welded pipe unit pay attention to when producing oil casing? The welded pipe unit should pay attention to the strength and toughness when producing oil casing. The welded pipe unit with reduced thermal tension can be cooled by controlled cooling, which can not only improve the welding problem of the welded oil sleeve to a large extent, but also improve its strength and toughness. The chemical composition of the welding base metal, welding temperature, welding speed and other factors are the main factors affecting the gray spot of the weld. In order to avoid gray spots in the weld, the edge quality of the strip and the welding process must be strictly controlled. The method of heating the whole pipe and reducing the thermal tension before the weld heat treatment can be adopted to reduce and avoid the gray spot of the weld. The control of welding groove corrosion needs to be avoided by reducing the thermal tension.
The butt welding process of the welded pipe unit includes uncoiling, clamping, straightening, shearing, guiding, butt welding, looper and alignment. This process can be said to be complex and changeable. The first three steps of the butt welding process of the welded pipe unit:
Specific butt welding process:
1. After the steel coil is in place, the left and right taper heads of the uncoiler can be inserted into the steel coil and rotated at the same time. The head is fed to the pinch roller. When the upper roller of the clamping roller is pressed down, the steel coil trolley and the magnetic roller can return to their original positions.
2. In order to make the spring steel belt accurately aligned, the uncoiler can move 150mm axially before operation. After the uncoiler is started, the strip steel enters the straightening machine equipped with dust removal device through the pinch roller.
3. The straightened spring steel strip head and tail shall be cut by sliding hydraulic shear (the cut steel strip head can be immediately slid into the waste box, and the cut steel strip tail can be collected into the special aggregate box outside the line through the output device).
Welded pipe unit
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