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On these pages I will highlight a few of the projects I have completed as samples of the quality of work that a customer
should expect. Please check in often because I will frequently update these pages with new items.
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On the left are two views of the first time I had to weld what is called a feedthrough into a stainless steel cover.
This type of feedthrough was 1/4 inch in diameter and the welds had to be on the inside to seal any seam between it and the
cover. By seal I mean just that, because they could not pass Helium atoms when finished. Even the presence of a tight
seam between the tube and the cover would trap atoms, only to release them when subjected to the ultra high vacuum (UHV) of
the chamber it would be used in. Pictured here is the practice piece I did before being turned loose on the "real item".
The bottom photo is of two pieces of stainless steel shim TIG welded together along the edge, just to try a new
welder. Each piece of shim is the thickness of an ordinary sheet of paper.
TIG welds such as these are done under a microscope.
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During this type of research work occasionally a weld is required on the inside, for the reason mentioned above,
but there is no access to it. Then it is sometimes possible to make a weld from the outside with 100% penetration so that
there is no seam on the inside. On the left is a sample of this type of weld done completely from the outside of the
tubes. The bottom view shows the inside of the finished weld. Even though both tubes are stainless steel, there
is no scale on the inside of either tube.
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All material on these pages is copyrighted by Jim Haubert 2002 - 2003
310 1/2 W. Second Street, Winslow, AZ, US, 86047,
928-289-2568
Now Located on "The Mother Road", Historic Route 66
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