[PSUBS-MAILIST] welding

[hank pronk via Personal_Submersibles]

Hi all,My new sphere heads are done and on the way, they measured maximum 1\8 in out of round measured against a 120 degree template.   I am planning to tack the heads together  securely then cut the three port holes and hatch hole.  I want to cut out the port holes witch  have the circumference weld running through them before welding the heads together.  I want the pieces from the port holes for test material.  I want to weld them together to prove weld procedure and quality with coupon testing and I plan to stretch the coupons to breaking point also.   I am not sure if I should cut all these holes before the heads are welded, it may cause the heads to distort.  Maybe I should test with a 1 inch piece left over from the pod project.  Hmmm thoughts anyone?Hank 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20151129/ea3189be/attachment.html>