Automotive New In tube end forming practices -- Can I downsize and then upsize a pipe end?

AI Thread Summary
In tube end forming practices, it is feasible to first downsize a pipe with a diameter of 55 OD to 50.6 ID and then upsize it by 1mm at the same end, using Ferritic Steel with a wall thickness of 0.9mm. The transition radius of 8mm is appropriate for this process. Participants in the discussion confirmed the possibility and encouraged sharing additional resources for further information. A link to relevant tools and dies for end forming was provided for reference. This method can be effectively executed with the right techniques and equipment.
Amol Joshi
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In tube end forming practices, is it possible to first reduce the diameter of the pipe (tube 0.9mm thick) and then expand it, at the same end, by about 1mm in total, with a transistion radius of 8mm ?
Please see attached image. Though it might be exaggerated, but the image should suffice.
I want to know the feasibility of it.
Material is Ferritic Steel. Of diameter 55 OD. The sizing is
1: Reducing to 50.6 ID and then
2. Expanding by 1mm diametrically.

Thank You.
 

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Yes.
 
Bystander said:
Yes.
Could you please give me some more information or links to resources I can refer.

Thank You.
 

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