| Manufacturing Towers | |
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1) A tubular tower is made of a lot of sheets of iron that are welded together. The large sheets arrive at the tower factory in a truck.Can you see that the edge of the sheet is slightly oblique ?It has to be, otherwise the tower would not be conical. |
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| 2) Before the large sheets can be welded, they must be bent into a round shape.A roller is used for this purpose.The man is using a crane to hold the heavy sheet. |
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| 3) When the plate has been rolled into a circular shape, it is ready to be welded.A welding robot is used to weld the plates together.Even though it is a robot a person is needed to control it. |
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| 4) A tower consists of several sections that are assembled when the tower is erected.Each section of the tower measures 20-30 metres.Some towers are 60 metres tall, so it is impossible to transport an assembled tower.A tower of 50 metres weighs approx. 40 tonnes, whereas a tower of 60 metres weighs 80 tonnes! |
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| 5) A flange is welded onto each end of the sections.A flange is a steel ring with small holes in it.It is bolted to the next flange in the next section of the tower.The tower is assembled using a lot of nuts and bolts that keep the sections together. |
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| 6) It can be difficult to see if the welding has been carried out correctly.That is why it is checked thoroughly using ultrasound.The man can check the quality of the welding by looking at the monitor.Just think what would happen if he were not doing his job well! |
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