Thread: Transmig 165 Nozzle.

The contact is usually a few mm recessed into the nozzle. the best way to test the nozzle and tip is tighten the contact tip as far as it will go(dont overtighten) and do the same with the nozzle and this will tell you exactly the finished setting of the contact tip and nozzle.

Keep in mind when welding the nozzle will slowly wear back due to the heat and keeping it clean thus the reason why the contact tip is set a few mm back. It also helps to protect the tip from contact with the weld and base metal and there is nothing worse than constantly having to clean the contact tip from spatter and the wire fusing itself to the tip. The other reason is to help the gas give the welding area the best coverage.

Id be keeping the nozzle flush with the shroud (Or just protruding) n a short stickout. Get in the habit of using a good quality anti spatter gel for your nozzle n keep the shroud clear a gunk n clean which i'll considerably reduce hassles.

Mig Welding Tips

Regards Lou

That's a handy link Lou, thanks.

The thing to remember if you set your contact tip close or level with the shroud is:

If you set at the start of the dip transfer mode and don't get the voltage setting quite right the arc will burn up the wire and weld itself to the contact tip.

This disproves the statement that copper will not weld readily to steel.
Then you have to file the contact tip end to release the wire bloody wire.

Hands up if ya have done it?

Grahame

G'day.
I have a transmig 165.
I use .8 wire at High 2 with wire speed of about 5 or 6 or 7 for most steel welding with gas.

Or .6 wire at low 2 wire speed 5.

for ALI, I use .8 wire High 3 wire speed 9 with straight argon.

Contact tip is about 3mm recessed up from the nozzle.

This works fine..

OK, Thanks Chaps, more practice next weekend.

Try different positions with shroud and settle on what you are happy with.