By Nanjing
Date 07-01-2009 12:07
I am looking for a quick answer from experienced SAW hands-on welding guys especially. When welding with 4.8mm carbon manganese wire at around 700 amps how much flux do I need? Say for a 25kg reel of wire how much flux (in weight) will I need? I know used flux can be sieved, reused and mixed with new flux but the bottom line is has anyone ever worked out, say for a ton of wire, how much flux is required? Some companies will shovel up it up the floor and re-use it without mixing it without new flux.
It depends on how efficient your flux recovery is.
I usually start at a 2:1 flux weight to wire weight ratio when purchasing.
Shoveling off the floor is a clear no, no. And if you don't keep mixing in new with recovery you will increase fines and the flux burden, usually manifest by small often almost horizontal porosity.
I always estimate a pound of wire to a pound of flux to start out.
Yes, you can do better than that by using a flux recovery system - and we have one. But there are countless "little things" that happen to make your flux usage vary to a level higher that you planned for - wastage, contamination, etc.
By weldktm
Date 06-12-2013 13:14
I think the OP was looking for a "quick answer".
Responding 6 years later is pretty much a waste of time.
Regards,
Shane
