the deoxidizing of titanium tubes surfaces
the deoxidizing of titanium tubes surfaces
(OP)
Dear all,
can anybody helps me solving the following doubts?
Our client requested, for titanium tubes, the deoxidizing of the external surfaces , at both ends of each tube.
I suppose that this is somehow concerning the subsequent welding of the same tubes to the tubesheet (I am talking about shell and tube heat exchangers). Is my assumption correct?
Is this a usual or unusual requirement?
Do you know if the tubes suppliers normally include this treatment in their production schedule?
How does this treatment work?
Thanks in advance for helping me.
Kind regards
Mombu
can anybody helps me solving the following doubts?
Our client requested, for titanium tubes, the deoxidizing of the external surfaces , at both ends of each tube.
I suppose that this is somehow concerning the subsequent welding of the same tubes to the tubesheet (I am talking about shell and tube heat exchangers). Is my assumption correct?
Is this a usual or unusual requirement?
Do you know if the tubes suppliers normally include this treatment in their production schedule?
How does this treatment work?
Thanks in advance for helping me.
Kind regards
Mombu





RE: the deoxidizing of titanium tubes surfaces
Years ago Kobe sold Ti HX tubes that had a distinct gold tint as a result of their process. They charged extra for this. I never saw anyone remove it before seal welding.
To do this would require the use of pickling and not only be expensive but add some risk due to additional handling and cleaning.
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Plymouth Tube
RE: the deoxidizing of titanium tubes surfaces
http://www.valtimet.com/
RE: the deoxidizing of titanium tubes surfaces
For titanium we polish back tubesheet thickness + 1" and clean with laboratory grade ethanol using virgin rags.
Here is the apparatus from Sugino that will do the job.
htt
http://www
RE: the deoxidizing of titanium tubes surfaces
RE: the deoxidizing of titanium tubes surfaces
A mechanical polish does not remove the surface oxides, it just moves them around.
If this was a hot finished product I could understand.
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Plymouth Tube
RE: the deoxidizing of titanium tubes surfaces
mombu,
Can you clarify the process used to manufacture the tubes?