Pure titanium tower skirt
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Since pure titanium and carbon steel cannot be welded directly, a transition section is added between the pure titanium tower skirt and the head, which is connected to the flange. How then should the bolt strength of this section be checked?
Based on the anchor bolts, the result is a conservatively acceptable value
This post was last edited by jia717 on 2010-6-15 at 19:13. The strength should be higher than that of the foot bolts. It is not directly fixed to the ground, but connected via flanges
I think it’s better to use flange connections; a swivel flange for the titanium part and a steel flange at the bottom, as this makes the calculations easier.
In my opinion, it is not feasible to use slip flanges for the titanium portion; the calculations for these flanges take into account only the shear force on the weld ring, but shear force is by no means the only force involved here
We all use flange-connected flat-plate designs; titanium is used for the titanium parts and steel for the steel parts. Sealing performance of the flanges is not taken into account here, so the design does not follow the rules related to flange leakage – only strength, as well as the shear and bending resistance of the bolts, are considered. The use of anchor bolts can be considered, with the bending moment being calculated based on this cross-section
I agree with the opinion above; if the diameter of the equipment is not large, titanium flanges can be used on the upper part.