Opening in pressure vessels
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I would like to ask fellow sailors: regarding the welding of connections on pressure vessels, it is necessary to make holes in the vessel. What method can be used to create these holes in a more precise manner? The holes made by our company’s workers using plasma cutting are of very poor quality
It’s a stainless steel container, right? If it’s carbon steel, then oxygen-acetylene will work. For stainless steel, plasma gas gouging can be considered, as it yields a smooth cut surface
For welded pipes, there are no strict requirements regarding the size of the hole; anything that will do will suffice, and machining is not necessary.
It’s the same in all cases; the requirements for initial welding aren’t very high. It depends on what grade the pressure vessel belongs to – if it’s grade 1, then the requirements aren’t that stringent
Flame or plasma cutting, followed by grinding.