[PSUBS-MAILIST] Welding

[hank pronk via Personal_Submersibles]

Alan,I can't recall if you have a shoulder on the end cap for the barrel to sit on.  Since your  caps are so beefy, machine a substantial shoulder for the barrel to sit on then clamp and weld.  I am not in love with the big plug idea, probably would work but I have seen things like that go bad from getting stuck.  I would just clamp it and weld it then machine it true again. Hank 

    On Thursday, April 28, 2016 4:36 AM, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
 

 Am re-phrasing a question I asked a little while back.
  I am making my aluminium thruster housing in 3 sections, front & back with
a cylinder between them. I had wanted to weld the cylinder section to the front housing
but was advised I would get too much distortion. If I made a steel plug to fit inside
the cylinder & front section to stop it distorting during welding would this work?
It would be a big heat sink. I could press it out afterward if it became stuck in the
process. 
Alan

 

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