Regarding the thickness of the cylinder and head
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Using the sw6 software, the nominal thickness of the cylinder is 10 and that of the head is 11. What should be done when these two thicknesses are different? If the thickness of the head is set to 10, the stress verification for the head fails – how can this be resolved?
The head must also take into account the amount of material that needs to be removed due to processing. Since the thicknesses of the cylinder and the head differ, if the misalignment is within acceptable limits, they can be joined directly; if it exceeds the allowed limits, the material can be thinned or welded back together. In accordance with Regulation 150.
Okay, thank you, moderator. I’ll go and study 150 carefully
When rounding up, it’s definitely not possible to round down; welding is also feasible even with uneven thicknesses
Okay, thank you, moderator. I’ll go and study 150 carefully
So it’s not necessary to wait for it to get thick, right? Is stress verification the main criterion?
For the same pressure vessel, the welding joint coefficients for the cylinder and the head should be the same, right?
It’s not simple – the cylinder is designed to be 10 MM thick, while the head is 12 MM thick. We at this manufacturing plant have encountered this situation many times; if money isn’t a concern, then both the cylinder and the head can be made 12 MM thick. However, it’s only possible to use a thicker material instead of a thinner one, not the reverse.
I see. So that’s how it is. I’ve just started working with design, and there are many things I don’t understand
Hehe, those who are just starting out in design surely know how to choose the appropriate thickness. They definitely understand that the thicker it is, the safer it is; so they will choose a thicker thickness. If the thicknesses aren’t identical, it’s still possible to weld them together
The thickness can vary without any impact, especially for software