welding magnesium alloy

[Welderpaul]

Kemppi's are good Fronius are king, My mate runs two and when the guy demo'd them we thought it was just sales BS about it will weld this that at the other....But they bloady would.......He's also got a fronius Tig which knocks the crap out my kemppi set's... But hey He gets nice welders and I get to go on holiday

Did your mate ever sell that set Snowy?

 

[snowcat]

Did your mate ever sell that set Snowy?

Yep £1900 which is plenty, It was the guy who sold it to him in the first place, Doing a bit of a swifty really, no longer selling set's but now a weld inspector in London for all the olympic buildings steel work, Its a case of il sign your chaps codeing, but your need to hire this set from me to get them welds up to scratch.....Mmmmm 20 or so sets out on hire for a few hundred quid a week he's not stupid is he?

 

[Steve.wain]

I remember from school that magnesium is a highly inflammable metal, it's used in flash bulbs to make the flash, it's used to ignite thermite reactions (welding railway lines), so how come it can be welded without bursting into flames?

 

[aametalmaster]

The shielding gas with mig or tig keeps it from burning...Bob

 

[shenion]

IT is mag alloy, not pure magnesium. Does not burn as easly, but does burn. The shielding gas helps keep it from burning.

Using 5356 wire on MIG you get black soot as the mag spatter exits the shielding gas it burns.

I have seen the aftermath of cars with mag wheels burned. Left huge puddle of metal as the back half of the car just melted away from the intense heat.