Sorry mate I'm not really understanding what you're getting at. If you hold a large drag angle you will progress down the joint quicker but penetration will be reduced. If you hold your rod more upright, the puddle won't progress along the joint as quickly and the puddle will grow larger. However by going to slow your heat input goes up and you risk lack of fusion and other discontinuities/inclusions.
Hi Olek.
I assume we are talking about T-Fillet joints yes?
Slag release is dependant on many things but is usually a good indicator of a smooth weld bead profile with no undercut for the slag to hold onto.
Correct rod angle, travel speed and amperage leads to 'peelers'.
The lack of fusion defects that could occur by moving too slowly would be lack of root fusion because you haven't kept on the leading edge of the puddle. If you hang back in the pool, the arc energy and molten metal is flowing into the cooling pool, not right into the corner of the joint.
Luckily stick is a process with a lot of arc force exerted, particularly with a 7018 which forms a flux cup where the metal core melts up inside the flux and channels the molten droplets towards the pool.
Stay on the leading edge of the pool with a drag angle of 10-20 degrees and youll soon get the hang of it.
doncha just love the knowledge freely given on this forum. Kudos to Brad.
Yes, I don't know for others but all conceptual explanation is important to me.Its a masterpiece , I dont think you could possibly explain more by writing so little
Bob
Do you know if the 6013 is more producing a spray of molten metal ? (less deep cup, that would be a reason to hold a larger arc than with 7018)
UNtil recently I was not aware that the gases are gouging the metal for the pool creation, then the melted metal flows in it , of course both operations together once the pool is created)
Beginners mistakes : not enough pool, and running too fast , not enough attention to flow the sides...
Best regards
Hi Olek.
The lack of fusion defects that could occur by moving too slowly would be lack of root fusion because you haven't kept on the leading edge of the puddle. If you hang back in the pool, the arc energy and molten metal is flowing into the cooling pool, not right into the corner of the joint.
Luckily stick is a process with a lot of arc force exerted, particularly with a 7018 which forms a flux cup where the metal core melts up inside the flux and channels the molten droplets towards the pool.
Stay on the leading edge of the pool with a drag angle of 10-20 degrees and youll soon get the hang of it.