I confused of the High Carbon steel machine propertie in Tig

[Anderson]

Have anyone know??why the High-carbon steel did the Tig welding,the workpiece welding pool would very bump.

please tell me,I would very appreciate for you.

 

[FranV8]

You need to practice your welding on thicker material first. Then pooling will be easier.

 

[Anderson]

You need to practice your English welding on thicker material first. Then pooling will be easier.

Mmm.....thanks for your advise. but can I consult you,why the weld pool of the high carbon steel after Tig process ,it very uneven??because of the electric current parameter??or..................

 

[Shox Dr]

Pictures speak a thousand words. Especially when English is not your first language

 

[FranV8]

Have you done TIG before? If you have not, it may be your technique. Are you managing to keep the electrode gap (distance between the torch electrode and the weld) small but constant?

There are several other potential causes, it could be:

- Fault of the welding machine
- Shielding gas (argon) problems
- Cleanliness of the metal being welded

Hve you cleaned the metal with a wire brush before welding?

Then wiped the metal with a degreasing solvent to remove any oil/grease/dirt?

TIG is very sensitive to unclean metal.

 

[Anderson]

I usually welding the stainless steel .Today I try to welding the high carbon steel after i found the weld pool was very inhomogeneous than stainless steel. I know my english is very poor and I will keep learning. Thanks..

 

[Shox Dr]

Metal Thickness?
Type of joint?
Any preheat
Gas Flow (Pre and Post)
Gas type
Amps?
Wire type?


Your English is better than some

 

[Anderson]

My weld parameter

Thickness :6mm
Current :180A/min
Gas Flow : 12Liter/min
Type of gas ure Ar
Weld joint :EWTh-2

 

[pedrobedro]

It looks like it needs preheating, 6mm is pretty thick and high carbon will turn brittle when it is heated and cooled quickly and that is what happens as you weld. What filler rod are you using? EWTh-2 is the tungsten, 2% Thoriated which should be fine for your job.

 

[Anderson]

I'm using the EWTh-2 weld joint.
And according you speech about the preheat,it talks about the machine ?????

I have done this before the formal welding.

 

[pedrobedro]

You need a gas torch or an oven to heat your metal before you weld it, it is not part of your tig machine. Heat it till the metal turns blue and it needs to cool slowly.