Should the holes be made in the head first, or should the pipe openings be created after the head and the cylinder have been assembled and welded together?
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Should the holes be made in the head first, or should the pipe openings be created after the head and the cylinder have been assembled and welded together? Experts who know about this, please analyze it
Determined based on the size of the equipment and the presence of large connections, etc
The manufacturing process varies depending on the capabilities of each factory
Generally, holes are made first to facilitate cutting and welding.
This is a process and welding issue that needs to be considered as a whole. Are there any manholes or inspection holes? Is the welding structure done on both the inside and outside? Is it easy to perform operations inside the cylinder? Do the connections have any internal components? The question is too general; it’s recommended to be more specific, otherwise the only temporary answer is: make holes first.
It is simpler and more convenient to mark and drill holes first; for structures that are more complex or require higher dimensional accuracy, overall marking and drilling can also be considered.
There are no special requirements for this; it just depends on how convenient it is for the workers to do it
Both methods are used; either one is acceptable
No heat treatment needed; it’s not a special material, just handle it casually
Although the operation has not been seen, considering ease of manufacturing, holes should be made first