Issues regarding the handling of straight edges on the drum of a three-roller symmetric rolling machine
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One method is to reserve a portion and cut it off after rolling; another approach is to pre-bend both ends. Both of these methods seem to have some drawbacks. Do you have any other good suggestions?
Roll directly to form a complete circle after welding.
Reserving a margin, rounding it off, and then cutting it off is suitable for thick plates and small-diameter materials in situations where shaping is not possible; it results in significant material waste as well as additional costs for secondary processing. Generally, it is possible to roll up a thick plate template and use it as a guide on a rolling machine, which yields good results.