kclim
Materials
- Jul 2, 2002
- 168
Dear all
Advice on oil coolers tube to tupeplate expansions.
We are currently preparing drawings for the manufacture of oil coolers to replace existing ones. The oil is on the shell side and the cooling water flows through the tubes.
The tube plate is 48 mm thick rolled naval brass and the current tubes are Al brass, which will be replaced with 90/10 copper nickel tubes. The tube outer diameter is 12.87 mm and the minimum pitch is 15.18 mm.
We have had some problems in the past with tubes leaking at the tube plate.
The current design calls for a lightly expanding tube in the tube plate and the back is then filled with solder.
We do not have any expertise in the field but were wondering whether it would be preferable to fully expand the tubes and not solder or continue with the existing method of lightly expanding followed by soldering. Any thoughts would be much appreciated.
Advice on oil coolers tube to tupeplate expansions.
We are currently preparing drawings for the manufacture of oil coolers to replace existing ones. The oil is on the shell side and the cooling water flows through the tubes.
The tube plate is 48 mm thick rolled naval brass and the current tubes are Al brass, which will be replaced with 90/10 copper nickel tubes. The tube outer diameter is 12.87 mm and the minimum pitch is 15.18 mm.
We have had some problems in the past with tubes leaking at the tube plate.
The current design calls for a lightly expanding tube in the tube plate and the back is then filled with solder.
We do not have any expertise in the field but were wondering whether it would be preferable to fully expand the tubes and not solder or continue with the existing method of lightly expanding followed by soldering. Any thoughts would be much appreciated.
