Titanium Tube Bending
Titanium Tube Bending
(OP)
Hi I'm looking for a thermoplastic material called Ceraban. Apparently we used to use it 40 years ago and I'm trying to find more information about it. The only thing I could find was in a old patent. See below. Apparently it is a liquid and then cures but it can be liquefied again using temperature. Any help would be appreciated.
"This result is achieved lby rst lling the spaces 19 with `a matrix of suitable liquefied thermoplastic material before the forming operation and while the `structural element assembly S is in sheet form, as for example Ceraban. When the thermoplastic material has solidified in the intercellular spaces 19, ythe structural element 4assembly S, together with the infused reinforcing matrix of thermoplastic material, may be formed or shaped as a solid sheet without internal disassociation of the sheets or change in wall thickness. The formed assembly S- is thereafter heated to allow the thermoplastic matrix material to liquefy and run out of the intercellular `spaces i9, to thus leave the formed :structural assembly S in its original open cellular condition"
"This result is achieved lby rst lling the spaces 19 with `a matrix of suitable liquefied thermoplastic material before the forming operation and while the `structural element assembly S is in sheet form, as for example Ceraban. When the thermoplastic material has solidified in the intercellular spaces 19, ythe structural element 4assembly S, together with the infused reinforcing matrix of thermoplastic material, may be formed or shaped as a solid sheet without internal disassociation of the sheets or change in wall thickness. The formed assembly S- is thereafter heated to allow the thermoplastic matrix material to liquefy and run out of the intercellular `spaces i9, to thus leave the formed :structural assembly S in its original open cellular condition"





RE: Titanium Tube Bending
RE: Titanium Tube Bending
I am sure that there are other thermoplastic resins that would do the job.
If you are looking back 40 years it will take trips to libraries looking at paper.
Same reason that I have a wall of books, very little old stuff is available digital.
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Plymouth Tube
RE: Titanium Tube Bending
http://www.cuxsongerrard.com/
It would probably be more productive to write down the properties of the material you need for your application and ask where you can find it now. Do you need a eutectic metal alloy or just wax?
RE: Titanium Tube Bending
With modern CNC mandrel bending equipment I wonder what kind of forming you are doing where a low melting point filler would be needed.
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Plymouth Tube
RE: Titanium Tube Bending
If you need to make a tube bend in titanium, the best method is mandrel bending if the ratio of bend CLR to tube OD is not too small, and the tube wall is not too thick. If the ratio of bend CLR to tube OD is small, you can produce it by hydroforming the part in two mirror-image halves from sheet, and then trim and butt weld them together. This is a technique used to produce thin wall metal ducts in aerospace. The tools used for hydroforming are often made from a metal like kirksite or cerrobend, so that the tool can be melted down and reused after a job is finished.
RE: Titanium Tube Bending
RE: Titanium Tube Bending
The micro (last pic) looks a bit odd. Any comments on that?
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Plymouth Tube
RE: Titanium Tube Bending
RE: Titanium Tube Bending
RE: Titanium Tube Bending
Thanks for providing more details of the process used for this component. I've never heard of this type of process before and I'm intrigued. I'd love to learn more about how you cast titanium alloy using molten uranium and thermoplastic tooling. I've only seen titanium cast using a vacuum investment process, where the tooling was ceramic and small section internal features were sometimes made using molybdenum cores.
RE: Titanium Tube Bending
We are actually casting uranium. The Ti tube is permanently surrounded in Uranium and acts as channel for passing radioactive pills inside (shielded position). Hope this clarifies the application.