Dr Strangeglove
Member
- Messages
- 13
I have been asked to make a heat exchanger for a friend. It is for a boat so will not be running at any temperature above 100 deg C (max). I have cut and folded the parts and drilled the end panels. This is going on a boat to act as a radiator using sea water to cool the engine coolant. The materials I have are 304 1.2mm sheet and 304, 1.5mm tube (polished – was all they had!). I plan on having the tube protruding from the end panels and doing a small fillet around the tube.
I have not used tig for a while and even then I used it more in my apprenticeship than as part of my manufacturing. Can you give me tips on how I should approach this job? I have presumed:-
All holes tight to the tube.
Tubes to protrude 2 to 3mm
Tack each tube in about four places before trying to fully weld any of them (due to distortion).
Fillet weld the end of the tube to the plate but use as little filler as possible.
Thin red band electrode!
I have assumed 308 filler rods at 1.6mm dia.
I have some argon for the shield!
Am I looking to practice this in the correct manner to start with so:- Any advice, tips, do’s and don’ts are welcomed.
Obviously I will practice as much as possible first – but I would rather practise doing it the right way!!
Regards
Mick
I have not used tig for a while and even then I used it more in my apprenticeship than as part of my manufacturing. Can you give me tips on how I should approach this job? I have presumed:-
All holes tight to the tube.
Tubes to protrude 2 to 3mm
Tack each tube in about four places before trying to fully weld any of them (due to distortion).
Fillet weld the end of the tube to the plate but use as little filler as possible.
Thin red band electrode!
I have assumed 308 filler rods at 1.6mm dia.
I have some argon for the shield!
Am I looking to practice this in the correct manner to start with so:- Any advice, tips, do’s and don’ts are welcomed.
Obviously I will practice as much as possible first – but I would rather practise doing it the right way!!
Regards
Mick