Comments on: Tips To Purchase A Plasma Cutting Machine

By: Freedom

Freedom — Thu, 19 Apr 2007 13:03:02 +0000

When you talk about pulse tig it is mostly DC welding. You use the pulse to help reduce the distortion. It is mostly used on all ferrous metals. You do not need or have the pulse feature on AC for aluminum. You would need an AC or AC/DC machine for tig welding aluminum. They are some what costly. When tig welding you need to stay with the better name brand welders. Thermal arc, Hobart, Miller, and Lincoln are all good machines. To weld 1/4" aluminum you need approximately 200 or more amps. So this puts you into a machine that is in the $2000 range. Then you need a bottle of argon gas. If welding for any length of time at those amps you would need a water cooled torch. Not to mention the water cooler, foot pedal and all the other items needed. All these items are costly. I am not trying to discourage you but you need to know it is going to cost you some bucks to invest in all the equipment you will need. Good luck!
(30 years as a certified welder)

By: Adam

Adam — Thu, 19 Apr 2007 08:22:06 +0000

Please read:
What is right for you, MIG or TIG? For certain type of work TIG is required, like welding chrome moly for some racing organizations. Intricate work, like gunsmithing is also well suited to TIG. TIG is used by many auto restorers who prefer a more precise, perfect finish that requires little to no finish work. TIG is most similar to gas welding in technique, so if you've done oxy-fuel welding, TIG should be a natural transition.

TIG stands for Tungsten Inert Gas welding. Also called GTAW (Gas Tungsten Arc Welding) and Heliarc® which was Linde's trade name for the TIG process when it was introduced many years ago. The arc is started with a tungsten electrode shielded by inert gas and filler rod is fed into the weld puddle separately. A slower process than MIG, it produces a more precise weld and can be used at lower amperages for thinner metal and can be used on exotic metals. TIG does require quite a bit more time than MIG to learn. It is similar in technique to gas welding.

MIG is required by law and by insurance companies in many localities for structural repair of automotive frames. MIG is also much easier to learn and faster to weld. For doing other types of welding, like sheet metal, it can be a matter of personal preference. For an auto body repair shop or a novice welder, a MIG is a good, practical all-around welder.

After welding and if application is critical , solution annealing is preferable.

By: unbelievabubble

unbelievabubble — Thu, 19 Apr 2007 07:45:07 +0000

Thanks bozzza – cheers to all those who share their experience and help others

By: midgainc

midgainc — Wed, 18 Apr 2007 19:28:30 +0000

TIG welding typically produces a higher-quality seam than MIG welding. It is also generally easier to weld thin metal pieces using TIG instead of MIG.

The internal structure of the fuselage is generally (from what I recall), a mixture of welded and riveted structure with the skin riveted onto the structure. It would be far too time consuming to weld the skin onto the structure, not to mention the costs involved if a weld is done incorrectly. Until an effective method of mass-producing aircraft is developed (Eclipse tried it and has so far failed), the tried and true method will continue to be used.

By: El S

El S — Wed, 18 Apr 2007 18:41:05 +0000

What you have to your advantage is being able to Oxygen- Acetylene weld. You need to be able to use both hands. One to manipulate the TIG Torch and the other hand to feed and dip the filler wire. Good Luck !

By: jim the welder

jim the welder — Wed, 18 Apr 2007 17:13:38 +0000

What's your question?

I was working for a company welding aircraft parts. APU assemblies for boeing, lear, and raytheon. I was recieving $18 and hour but would have been able to make more through raises and fringe benefits. i ended up quitting because they cut out all overtime. I need certs for all kinds of AL, S.S., And CrMo. I had to get tube, and plate from .020 to .375 certs before I even started welding on the parts and that took a couple of weeks….

I think a lot of people hear about guys making $40 an hour and think they can jump in on that but what they don't realize is those guys have been doing it for years and have recived annual raises etc.

By: phics19

phics19 — Wed, 18 Apr 2007 13:47:24 +0000

taga saan ka nga YBAÑEZ??NKO SIKAT talagah ybañez kht saan…ybanez din poh aq taga CANADA..

By: Bewareofgigem

Bewareofgigem — Wed, 18 Apr 2007 02:49:56 +0000

Welds are probably huge by the way he’s slinging the tungsten around.

By: bozzza69

bozzza69 — Tue, 17 Apr 2007 20:51:29 +0000

and its just a accepeted method of pipe welding and is genrally used because it is consitant and usally creates nice looking welds that r sound

By: kawlover

kawlover — Tue, 17 Apr 2007 08:44:04 +0000

You will weld in accordance to the weld procedures that will be given to you for the specific materials mentioned.