TG-X flux core TIG rod

[Pravin Poornachandran]

Dear Expert,

I'm having issue on removing slag on root pass welding for stainless steel pipe welding

Welding condition:

Material: SS 316L

Thickness: 4-5mm

Bevel angle: 65 deg

Root opening: 3-4mm

Root face: 1mm

Pipe dia: 4 inch

I'm using KOBELCO TG-X316L FCW TIG rod, special consumable which can eliminate back purging which save cost on Ar.

However, it is difficult to remove slag on inside the pipe.

Kindly advice if anyone have experience using TG-X from KOBELCO and how to remove the slag inside the pipe.

Best regards,

Pravin Poornachandran

[Ramudu kk]

I hope there is no any other method for removing slag in side the pipe..we have to do air blowing are water flushing after completion of the welding.

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[pkkani...@gmail.com]

Their is one anti spatter spray available at market,friendly and fit for industrial welding standards might help.

[george....@gr.bureauveritas.com]

you may use chemical milling

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Pravin Poornachandran ---18/12/2014 06:15:05---Dear Expert, I'm having issue on removing slag on root pass welding for stainless steel

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[M.R.Kolahkaj]

Buddy...Slag by GTAW process.... You sure?

[Umar Makrani]

TIG probably is mistyped FCW(flux cored welding) he might mean MIG. 

 

 

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[LALU RAJENDRAN]

Hi Pravin,

It is common fact that while using TG-X filler the slag will be there inside the pipe and it prevents the weld metal from oxidation and thats what it is know for. Removing slag is not possible by mechanical means, you may flush the line with water or steam before hydrotest. You may do industrial etching after consulting with your client.

regards,

LALU

LINKS MIDDLE EAST

[Adriaan Stoltz]

Gents, there are GTAW flux cored filler rods on the market. This is used in situations where purging is not practical. The flux in the filler creates the gas to shield the weld pool. This does leave a deposit of slag on the root run. If you are doing a weld where the root is inaccessible for grinding or chipping, the only way to clean the root run is by chemical means as advised previously.

Sent from Samsung Mobile

[Adeel Rafique]

hye pravin. AS TG X flux cored wires are used as an alternative of purging and the Slag is produced because these filler wires are flux cored. For 4-5mm thickness set your amperage to about 80-90 A. Just like FCAW this slag is a fused slag, there is no need to remove it. But if you want to remove slag from your weld job then find other alternatives in http://www.weldpedia.com/2014/04/five-alternatives-to-eliminate.html

[Roy Joseph]

It is self detaching type slag.During hot pass it will automatically detach from the weld.

Regards,

Roy Joseph