Processing issues of tower section flanges
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The tower has a diameter of 3000, a section height of 6000, with container flanges at both ends. May the flange sealing surface be machined after welding the tower section and the flange? I believe it is impossible to have such processing equipment; I’m not sure if my judgment is correct.
Replying to floor 2: Your idea is great. But for such large-scale equipment, are there lathes of this kind available?
Generally, processing is carried out first and then welding is done; during welding, it is important to align the flanges and secure them with bolts, before separating them once they have cooled down. If machining is done after welding, I have never seen a lathe that large. Dear sea friends, if anyone has such a large lathe, please let us know so that we can all take a look.
I agree with the opinion from the 4th floor. However, the feedback I received regarding the drawings was that post-weld processing is required, and it is necessary to ensure that the tolerance for the perpendicularity between the sealing surfaces of the two flanges and the cylinder body is no more than 1 millimeter.
After the flanges are processed, they are assembled and welded. When assembling, choose flanges with good centering properties, and pay attention to the following points: 1. It is essential to control the dimensions of the tube sections – their length, width, and diagonal dimensions. 2. Ensure the straightness of the tube sections during assembly, maintain consistent gaps for the welds, and use low current along with multiple layers of welding. 3. “L = 60,000 and DN = 30,000; it is also necessary to ensure that the tolerance for the perpendicularity between the sealing surfaces of the two flanges and the cylinder body is not greater than 1 millimeter.” Riveted and welded components cannot meet this requirement. Welding stress deformation may exceed 1 mm.
Sure, our company specializes in on-site processing of flange sealing surfaces and other products – Xuyuan Machinery
There are specialized devices for on-site flange processing – even for the smallest sizes
For precision, include a small break