Does anyone know of a european supplier of 7005 aluminium tubing - preferably T0 or T4?
not europe but https://www.cycle-frames.com/bicycle-frame-tubing/home.php
reynolds is out of UK so they must have some sales somewhere? why concerend with heat treatment? 7005 doesnt need post weld HT. iir T0 T4 are not related to tubing but its been a loooong time since i read about that
Does anyone know of a european supplier of 7005 aluminium tubing - preferably T0 or T4?
not europe but https://www.cycle-frames.com/bicycle-frame-tubing/home.php
reynolds is out of UK so they must have some sales somewhere? why concerend with heat treatment? 7005 doesnt need post weld HT. iir T0 T4 are not related to tubing but its been a loooong time since i read about that
Thank you, I´ll hit up Reynolds.
I might very well be wrong, but as far as I know, T0, T4 and T6(or any other Tx value for that matter), refers to the thermal treatment the aluminium has been exposed to, regardless of shape(tubing, block, etc.).
And in regards to the need for it with 7005 tubing, it seems some manufacturers use it some might not. If I´ve understood everything correctly the microstructure is messed up post-weld, therefore you "reset" the structure by heating to XXX temperature for a small amount of time - then cool the frame in air or liquid. Now the frame is of T4 quality(uniform microstructure), to optain T6 quality the frame needs to be aged for a certain amount of hours at a lower temp - this hardens and strengthens the frame.
I´m in no way an expert, but it´s my understanding that 7005 naturally ages at room temp, but in order to optain the optimum strength(T6) artificial aging is needed.
It's not a full frame yet, but I'm starting to get excited! This is the bottom bracket junction of a gravel bike frame that I've been working on for a while now. It's compression molded out of fiberglass for now, and I'll re-do it in carbon fiber hopefully in the near future. This part was made in 3D printed molds using a removable 3D printed core material.
This part was a wet layup around a PVA mandrel that was dissolved out after the resin cured. I also did a part using a bladder system in this mold using ~10 psi, which was all my bladders could handle. The mold should be able to handle a bit more than that.