Resistance welding of Aluminium sheet, Possible?

[Anti-Spam]

I have to, on a regular basis join sheets of 0.8mm thick aluminium
sheet together, have been using pop rivets (with a air operated pop
gun) but the amount I have to use for each pair of sheets is over 200,
so is time consuming, I need a quicker option. Need advice on the
feasibility on spot welding, is it practical proposition? if so advice
on what sort of spot welder I would need to buy would be appreciated.

If you have any other suggestions, they would also be appreciated.

Thanking you in anticipation.

Mark in Spain

[nobody]

Post by Anti-Spam
I have to, on a regular basis join sheets of 0.8mm thick aluminium
sheet together, have been using pop rivets (with a air operated pop
gun) but the amount I have to use for each pair of sheets is over 200,
so is time consuming, I need a quicker option. Need advice on the
feasibility on spot welding, is it practical proposition? if so advice
on what sort of spot welder I would need to buy would be appreciated.
If you have any other suggestions, they would also be appreciated.

From http://en.wikipedia.org/wiki/Spot_welding

"Aluminum alloys can also be spot welded. However, their much higher thermal
conductivity and electrical conductivity mean that up to three times higher
welding currents are needed. This requires larger, more powerful, and more
expensive welding transformers."

Also see:

http://en.wikipedia.org/wiki/Welding#Aluminum

[Anti-Spam]

Post by nobody

Post by Anti-Spam
I have to, on a regular basis join sheets of 0.8mm thick aluminium
sheet together, have been using pop rivets (with a air operated pop
gun) but the amount I have to use for each pair of sheets is over 200,
so is time consuming, I need a quicker option. Need advice on the
feasibility on spot welding, is it practical proposition? if so advice
on what sort of spot welder I would need to buy would be appreciated.
If you have any other suggestions, they would also be appreciated.

From http://en.wikipedia.org/wiki/Spot_welding
"Aluminum alloys can also be spot welded. However, their much higher thermal
conductivity and electrical conductivity mean that up to three times higher
welding currents are needed. This requires larger, more powerful, and more
expensive welding transformers."
http://en.wikipedia.org/wiki/Welding#Aluminum

Thanks for that, any suggestions on what amperage I need, any special
requirements like timer required?

[nobody]

Post by Anti-Spam
Thanks for that, any suggestions on what amperage I need, any special
requirements like timer required?

I don't know. Try posting your question to this active group:

rec.crafts.metalworking