Need help! Most people will say you should not have bought a Chinese machine. I agree but I had very little choice as we live in Thailand and you can only get Chinese made welders at reasonable cost over here. Import duty on a Miller works out close to 100 percent. The machine I bought is a Welpro 250P AC DC. Works fine when tig welding stainless but I have had no luck with aluminium. I am using pure tungsten and trying to weld a tab onto a yacht mast, thickness around 6mm. Using pure Argon at 20 CFH. The moment the tungsten arcs it balls up and burns back into the cup. This happens in a matter of seconds. I have used the calculator on the Miller website. I can however not find any help regarding the settings for my machine as its adjustments are not the same as the high end inverter welders. I will post a photo of the welder as soon as I can. Any help will be appreciated.
- weldin mike 27
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Weldmonger
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Joined:Fri Apr 01, 2011 10:59 pm
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Location:Australia; Victoria
Hey,
This topic has been moved to tig welding thread.
Mick
This topic has been moved to tig welding thread.
Mick
Thank you for the replies,
I am having some issues posting a photo of the machine but I will give a brief break-down of the settings I have.
Per flow 0-1 s, Peak current 10-250 A, Base current 10-90%, Down slope time 0-10s, Arc force 0-75 A, Pulse frequency 0,5-300 hz, Pulse duty cycle 10-90%, Clean area width 20-80 %, Post gas 0-10 s. The link is to a PDF showing what Welpro supplies. http://www.thaiphatmachine.com/phocadow ... WELPRO.pdf. Page 14 is the one I have. That is the Welpro 250 p AC dc.
No AC Balance?
I am aware that this topic has been discussed in another thread but I was not able to find a answer to my problem there. I am hoping that someone has a machine with similar controls to mine who can shed some light on my problems. I have some 2 % lanthenated tungsten on the way but at the moment I am stuck with the pure tungsten. It came with the machine as part of the package so by rights it should work to some extend. Right now the only puddle I am getting is from tears of frustration!
Thanks again
I am having some issues posting a photo of the machine but I will give a brief break-down of the settings I have.
Per flow 0-1 s, Peak current 10-250 A, Base current 10-90%, Down slope time 0-10s, Arc force 0-75 A, Pulse frequency 0,5-300 hz, Pulse duty cycle 10-90%, Clean area width 20-80 %, Post gas 0-10 s. The link is to a PDF showing what Welpro supplies. http://www.thaiphatmachine.com/phocadow ... WELPRO.pdf. Page 14 is the one I have. That is the Welpro 250 p AC dc.
No AC Balance?
I am aware that this topic has been discussed in another thread but I was not able to find a answer to my problem there. I am hoping that someone has a machine with similar controls to mine who can shed some light on my problems. I have some 2 % lanthenated tungsten on the way but at the moment I am stuck with the pure tungsten. It came with the machine as part of the package so by rights it should work to some extend. Right now the only puddle I am getting is from tears of frustration!
Thanks again
ajlskater1
- ajlskater1
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Ace
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Joined:Thu Feb 02, 2012 5:32 am
My guess is that the clean area width would be the,same as your AC balance. Play with that setting. Pure toungstens work fine on inverters but 2 percent lanthanated tungstens work good to. Also make sure you are using the right size tungstens roentgen amps you are using. Using a smaller tungstens then recommended will cause it to ball up really bad.
- weldin mike 27
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Weldmonger
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Joined:Fri Apr 01, 2011 10:59 pm
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Location:Australia; Victoria
Hey,
Glad you got it sorted,
Mick
Glad you got it sorted,
Mick