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Put a vent hole in anything you weld that will be sealed up completely or air will heat up and expand and blow away your shielding gas or even blow out at the end of the weld bead.

New technologies offer optimized stick and TIG performance, designed to specifically meet the needs of open root pipe welding.

The more vertical the torch is, the more arc is directed into the part. Think about it like this…

If you are welding stainless pipe with a purge and your weld is still sugaring, remember argon is heavier than air and flows like water.

Well there is always a bit of fudge factor because flowmeters are different, and machines are different …

ac/dc mix tig welding machine ALUTIG-200P

TOPWELL ALUMIG-250P
http://www.topwellwelders.com/pid17644115/ALUMIG-250P.htm

http://www.topwellwelders.com/pid17644115/ALUMIG-250P.htm
Using a TOPWELL Mig Welder (alumig-250p) to do some pulse spray mig welding on heavy steel. View this short video on how pulsed MIG works and why it is beneficial compared to standard MIG welding
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TOPWELL professional in welding ，Corporate videos——HANGZHOU TOPWELL TECHNOLOGY CO.,LTD.

Arc 200i welding from Topwell.(http://www.topwellwelders.com)

Usually AC is better for these situations. also, if you have large gaps to fill AC is usually better.

Because helium carries so much more energy and heat than argon, aluminum can be puddled very quickly so a puddle can be made very quickly even on very thick aluminum.

First of all, not every tig weld machine can weld aluminum. Its one of those things that really sets a welder apart

High quality cutting performance.
Accessories:Trafimet CB-50 torch

Our mastertig-200/250ac has the full functions of tig welding.
DC tig is used for mild steel, stainless steel, copper, titanium and nickel alloy.
AC tig is typically used for welding aluminum and similar alloy.
MIX tig is used for welding two different thickness of work piece.

It is a lightweight and compact designed dc tig welding machine, including a 250amps power source as same as our Protig-250Di.

topwell welding machine for ac/dc TIG aluminum welding

Excellent performance ，Great quality

Remote amperage controls Which is better? a foot pedal or hand control?

" sideways scratches on your tungsten will also cause pandemonium and the end of the world as we know it."

On transformer tig welders, forgetting to set high frequency to continuous when tig welding aluminum …..

Tungsten size should be selected mainly according to amperage AND polarity and not always dependent upon metal thickness.

Advancements in multiprocess machines are making it even easier to gain quality results for various welding processes...

Keep wire in a clean, dry place when not welding, Rusty wire will not help us now... will it?.

Use gas lens style collet bodies and cups to weld stainless steel. The screen in the gas lens allows far better gas coverage of your welds.

Foot brake make it convenient drive when you are driving .By the same way, when we operate welding with two hands,Foot pedal control current is also very convenient.

MIG welding tip...Get a better Ground clamp. This is probably one of the most important mig welding tips ever!

Way back around 1998, I got a request quote a job that involved welding 200 or so round parts.