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What factors affect the quality of ACSR?
Release time:
2022-03-02
Steel core aluminum stranded wire refers to the reinforced conductor of single-layer or multi-layer aluminum stranded wire stranded outside the galvanized steel core wire. Mainly used in power and transmission line industry. It can be seen that its quality directly affects the safety of power transmission.
Steel core aluminum stranded wire refers to the reinforced conductor of single-layer or multi-layer aluminum stranded wire stranded outside the galvanized steel core wire. Mainly used in power and transmission line industry. It can be seen that its quality directly affects the safety of power transmission.
What factors affect the quality of ACSR? Let's take a look.
1. single line broken.
Main reasons:
1) The single wire is wound loosely on the coil, or the single wire is pulled too tightly on the coil;
2) The threading pipe is blocked by the groove caused by friction; the single wire is knotted, or the pay-off disc brake is too tight.
2. single-line arch is loose.
Main reasons:
1) The choice of the middle diameter ratio is unreasonable;
2) Single wires on the wire-cage distribution board are staggered and unevenly distributed;
3) The die aperture is too large;
4) individual single line tension is too large.
In the production process, the quality of incoming raw materials should be strictly controlled; attention should be paid to avoid mechanical damage caused by coil collision during transportation; pay attention to the storage location of aluminum wire to avoid damage to it caused by corrosive media and humid air.
Take relevant measures:
1) Before production, select appropriate parameters, such as pitch diameter ratio, twist ratio, twist length and twist direction. They have a direct impact on product quality, stability, strength, resistance and material consumption.
2) Reasonably adjust the position distribution of the single line on the distribution board according to work experience;
3) Select the appropriate pressure hole grid, generally requires that the die diameter is 0.3-0.5mm smaller than the outer diameter of the wire;
4) Reasonably adjust the tension of the release reel to ensure that the tension of each single thread is moderate and consistent;
5) Adjust the torsion device at the same angle to eliminate the internal stress generated during the processing of the guide rail;
6) Minimize the number of stops during the twisting process and try to produce at a constant speed.
So as a kind of steel made of steel wire, in what aspects will ACSR be applied?
The steel core aluminum strand itself still has many properties, not only high strength and high toughness, but also good relaxation performance, especially good ductility. After stretching is very straight, the tensile strength is relatively high. When used, strength and toughness are not to worry. It is precisely because of these properties that this kind of steel can be widely used and become a kind of steel that people will pay attention to at present.
At present, ACSR can be used for tie bars of bridges, load-bearing cables and blocking cables on both sides of roads. Not only that, it can be seen in bridges, buildings, and energy projects, and it is often used in floor slabs and some basic projects, so it is still very widely used.
When we understand the steel core aluminum stranded wire, we can find that the steel core aluminum stranded wire can be used in many industries. But when using this material, the construction unit must pay more attention. Only by taking into account the specific use methods and precautions, can we use it correctly and play the role of this steel core aluminum stranded wire and become a common material in many industries.
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