the chamber is in fact an automotive shaft
in one side it's close by a "tulip"
on the other side it's close by a "stud"
it's a CO2 deep penetration welding
laser power: 6kW
frequency : 50kHz
feed rate : 2 m/min
the gas I combine with is He
the material is pre-heated
the...
thank you for your answer
the pressure is of course the parameter the most important in fact the problem is how to provide the "blow in" or to regulate the pressure without drilling holes in the close chamber
I'm trying to find the causes of the phenomenon called "blow in"
for those who don't have an idea of this phenomenon in welding application it's quite like the burning candle in a jar experiment :
put a burning candle on water then cover it with a glass the candle will stop burning...
