Using clinch system to join thin annealed stainless sheet?

[windy]

I am remaking the steam generator outer and inner cases with insulation between out of 0.004" annealed 316.
I lock joint the seams but with the intense heat on thin stainless it can open up.
A strict weight limit on my class of flash steam hydroplane has to be considered so rivets, bolts etc are not used.
I have an old spot welder but on 0.004" stainless it can burn through.
Has any one tried this system?
http://www.clinchsystems.com/process/technical-infos.html
If the stainless foil is ductile enough I thought of making some dies to try the clinch system to hold the lock jointed seam together.
Any suggestions on the dies or some other form of fastening device.

Paul

 

[canadianhorsepower]

Hi yes I did use this clinching for aluminium garage door
works fine
it works so well that to take it apart your material are ruined

 

[abby]

Do you need an inner shell ? I came across a ceramic paste that can bond to metal components , and then harden into a high temperature insulating film.
Can't remember the name but the manufacturer sends me emails quite often so I guess I could find out.

 

[windy]

Thanks abby.
Problem is weight my nephew suggested a similar product?
He developed for steel fire protection but said it's heavy.
Another possible problem unless flexible it could crack as there is a lot of movement i.e. expansion and vibration plus if the hydro submerges at high speed the instant cooling in the water might shock load it.
A not uncommon experience as one of my video’s show.
https://www.youtube.com/watch?v=DvsT-7i-hZI
The underwater antics are not always as dramatic as a bad launch can turn it in to a submarine.

Paul

 

[abby]

ceramic fibre tube might be another option , it is light and would not be damaged by shock.
It is available in a wide range of sizes and can be easily cut . It is not physically strong but is an insulating refractory and will handle steel melting temperatures.

 

[windy]

The ceramic tube sounds interesting who supplies it in the UK?
If suitable could solve a few problems.

Paul

 

[windy]

I have just emailed http://www.tech-ceramics.co.uk/about.html and will see if they can help.