weldmeister
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- 30
he just tacked 2 rods together
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TIG video , explanation needed ?
- Thread starter tigler
- Start date
little fishies grow up
Walking the cup is the only way for most to complete a 100% integrity root pass for pipe welding.
I have been pipe welding 30 years and only ever seen about 5 people that can free hand a root and can do it proficiently enough to pass an xray, one of those was a women. Walking the cup is the standard.
It really is not that hard as you have the pipe bevel to guide you along, the trick is in the wrist and an even applied pressure down the rig shaft, too heavy pressure and the cut will slide and stick, too little your speed will be compromised.
A flex head coupled with a stub tungsten stop will help you out miles while trying this procedure.
Make a t-joint on your welding table and practice, use a small cup, practice while the machine is off, a little effort will produce some wonderful results.
Anthony.
Walking the cup is the only way for most to complete a 100% integrity root pass for pipe welding.
I have been pipe welding 30 years and only ever seen about 5 people that can free hand a root and can do it proficiently enough to pass an xray, one of those was a women. Walking the cup is the standard.
It really is not that hard as you have the pipe bevel to guide you along, the trick is in the wrist and an even applied pressure down the rig shaft, too heavy pressure and the cut will slide and stick, too little your speed will be compromised.
A flex head coupled with a stub tungsten stop will help you out miles while trying this procedure.
Make a t-joint on your welding table and practice, use a small cup, practice while the machine is off, a little effort will produce some wonderful results.
Anthony.
Walking the cup is the only way for most to complete a 100% integrity root pass for pipe welding.
I have been pipe welding 30 years and only ever seen about 5 people that can free hand a root and can do it proficiently enough to pass an xray, one of those was a women. Walking the cup is the standard.
It really is not that hard as you have the pipe bevel to guide you along, the trick is in the wrist and an even applied pressure down the rig shaft, too heavy pressure and the cut will slide and stick, too little your speed will be compromised.
A flex head coupled with a stub tungsten stop will help you out miles while trying this procedure.
Make a t-joint on your welding table and practice, use a small cup, practice while the machine is off, a little effort will produce some wonderful results.
Anthony.
This is exactly what is happening, I will ease up on the pressure
Make a t-joint on your welding table and practice, use a small cup, practice while the machine is off, a little effort will produce some wonderful results.
I shall be trying this method tomorrow, I know my main fault is impatience, I see the pro welders doing this and forget they have many years experience behind them. I will stick at it, thanks for taking the time to help me out.
Rich
Autolupus.
1 inch sch 5 with a wall of .065 is the smallest I have seen done, I personally have never welded anything with such a thin wall, the smallest I have done was around 1/2 nominal sch 80 and that was a socket weld.
Thin wall pipe in any size on a mass production would really not be hand welded; this type of pipe is mainly used in the food or pharmaceutical industry and then they want perfect roots coupled with food grade quality pipe and cleanness control. Then the joint is not the same of its thicker brothers, it’s more like fusion welding one pass and that’s all she wrote.
This is done by a machine its called Orbital welding, it’s a form of CNC welder machine, the operator just makes the fit in the jig and programs the weld and the machine dose the rest.
Anthony.
1 inch sch 5 with a wall of .065 is the smallest I have seen done, I personally have never welded anything with such a thin wall, the smallest I have done was around 1/2 nominal sch 80 and that was a socket weld.
Thin wall pipe in any size on a mass production would really not be hand welded; this type of pipe is mainly used in the food or pharmaceutical industry and then they want perfect roots coupled with food grade quality pipe and cleanness control. Then the joint is not the same of its thicker brothers, it’s more like fusion welding one pass and that’s all she wrote.
This is done by a machine its called Orbital welding, it’s a form of CNC welder machine, the operator just makes the fit in the jig and programs the weld and the machine dose the rest.
Anthony.
