I just got my new welder a week or two ago got it through matt1978 it is a lorch 3030 it is Synergic you can store welding parameters.
And is tiptronic you can adjust volts wire speed etc at the torch saving getting out from under the car and adjusting at the machine which is a pain if you are in an akward postion.
The brazed joints are not perfect i did not have the correct gas, you are supposed to 100% pure argon. but they are good enough to get the genral idea.
I must say i like the lorch 3030, and it was all through this forum and good advice that made it possible to buy this great welder
...... Thank's MATT
A little technical info about mig brazing
When spot-welding is inappropriate, the new Advanced High Strength Steels (AHSS) should be welded with a MIG brazing machine using either CuSi3 or CuAl9 wire. Other wires may be specified so your welding machine should be able to cope with these as well. Only 100% Argon should also be used as the protective gas.
MIG welding wire melts at about 1500°C, which is too hot for the new AHSS steels. Overheating changes the molecular structure of the steel, making it brittle and susceptible to rusting. MIG Brazing wire on the other hand melts at around 900°C and flows between the gap, leaving a repair that is formable and yet stills retains the correct tensile strength
A sill panel with cuts in it approx 0.9mm thick it is early days i will get better
Brazed joint see how nice it cleans up
Penatration is amazing this is pretty much how it should look the same built of braze on the inside as outside giving it structral integrity
And is tiptronic you can adjust volts wire speed etc at the torch saving getting out from under the car and adjusting at the machine which is a pain if you are in an akward postion.
The brazed joints are not perfect i did not have the correct gas, you are supposed to 100% pure argon. but they are good enough to get the genral idea.
I must say i like the lorch 3030, and it was all through this forum and good advice that made it possible to buy this great welder
...... Thank's MATT
A little technical info about mig brazing
When spot-welding is inappropriate, the new Advanced High Strength Steels (AHSS) should be welded with a MIG brazing machine using either CuSi3 or CuAl9 wire. Other wires may be specified so your welding machine should be able to cope with these as well. Only 100% Argon should also be used as the protective gas.
MIG welding wire melts at about 1500°C, which is too hot for the new AHSS steels. Overheating changes the molecular structure of the steel, making it brittle and susceptible to rusting. MIG Brazing wire on the other hand melts at around 900°C and flows between the gap, leaving a repair that is formable and yet stills retains the correct tensile strength
A sill panel with cuts in it approx 0.9mm thick it is early days i will get better
Brazed joint see how nice it cleans up
Penatration is amazing this is pretty much how it should look the same built of braze on the inside as outside giving it structral integrity
...Bob
