ADVrider

Go Back   ADVrider > Gear > The Garage
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 03-05-2007, 08:43 PM   #1
KTM640Dakar OP
Motorsick
 
KTM640Dakar's Avatar
 
Joined: Nov 2004
Location: Oxbow Lake
Oddometer: 2,053
Laugh Ask your WELDING questions here.

Do you have a question about welding? How to weld a material or which welding process to use? MIG, TIG, stick, oxyfuel?

If you read through this thread and can't find an answer to your question then ask it in the last page or PM me.

If you are looking for free "how to" welding information search here:

Welding School:

http://www.lincolnelectric.com/en-us...ng-school.aspx

Safety:

http://www.lincolnelectric.com/en-us...ng-safety.aspx

Do it yourself read and learn:

http://www.lincolnelectric.com/en-us...materials.aspx

There is good information on safety and getting started in welding if you are new at it.

http://www.lincolnelectric.com/en-us...s/sitemap.aspx
__________________
A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

It is not the destination, it's the journey.

KTM640Dakar screwed with this post 02-13-2014 at 07:01 PM
KTM640Dakar is offline   Reply With Quote
Old 03-05-2007, 08:50 PM   #2
Poolside
Syndicated
 
Poolside's Avatar
 
Joined: Apr 2003
Location: Long Beach, CA
Oddometer: 11,865

Could I toss in a technical question about plasma cutting or Plasma Arc Welding?

- Jim

__________________

IICE Air Hotrod your GS  Fuel Injection  Tech Info  Buy  Order List  Installation
Poolside is offline   Reply With Quote
Old 03-05-2007, 08:51 PM   #3
KTM640Dakar OP
Motorsick
 
KTM640Dakar's Avatar
 
Joined: Nov 2004
Location: Oxbow Lake
Oddometer: 2,053
Sure. Plasma cutting is good too.
__________________
A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

It is not the destination, it's the journey.
KTM640Dakar is offline   Reply With Quote
Old 03-05-2007, 08:58 PM   #4
Poolside
Syndicated
 
Poolside's Avatar
 
Joined: Apr 2003
Location: Long Beach, CA
Oddometer: 11,865

Say a drag tipped torch cutting .250 carbon steel sheet, with compressed air. The arc is running and the tip is dragging.

What is the approximate power supply output voltage measured across the leads at the supply side? Or, the arc voltage measured between the electrode and the workpiece.

Either one.

- Jim

__________________

IICE Air Hotrod your GS  Fuel Injection  Tech Info  Buy  Order List  Installation
Poolside is offline   Reply With Quote
Old 03-05-2007, 09:14 PM   #5
Gordy
Team Listo
 
Gordy's Avatar
 
Joined: Dec 2001
Location: NM
Oddometer: 22,199
OK, this should be easy.

I need to weld some aluminum. I have one of the Lincoln 220V wire feed machines. I am using Argon. Can I just buy some aluminum wire and use the Argon? This is not a critical weld on a frame or anything.

I know............I need a TIG.
Gordy is offline   Reply With Quote
Old 03-05-2007, 09:19 PM   #6
scooteraug02
Dog Rancher
 
scooteraug02's Avatar
 
Joined: Feb 2003
Location: Atlanta, GA
Oddometer: 4,514
Where is the best place to learn to weld?

I was watching a show on CMT, they were fixing up a guy's dump truck and used a plasma cutter tool to cut 2" holes for round lights. The tool was fast and worked like a compass. What is that tool and what other cutting tools are available.

You weld something critical and it needs to hold up. How do you know the weld is strong or correct without beating up your project testing the weld?

Is it true a beer can can be welded if the welder is skilled?

Does grinding a weld weaken it?
__________________
scooteraug02 is offline   Reply With Quote
Old 03-05-2007, 09:26 PM   #7
KTM640Dakar OP
Motorsick
 
KTM640Dakar's Avatar
 
Joined: Nov 2004
Location: Oxbow Lake
Oddometer: 2,053
Quote:
Originally Posted by Poolside
Say a drag tipped torch cutting .250 carbon steel sheet, with compressed air. The arc is running and the tip is dragging.

What is the approximate power supply output voltage measured across the leads at the supply side? Or, the arc voltage measured between the electrode and the workpiece.

Either one.

- Jim
To cut 1/4 inch plate you will need about 30 Amps. With plasma cutting the voltage is determined by the distance of the tip to the plate you are cutting. You don't really set the machine voltage on a hand held plasma cutter, you set amperage. The key to getting a good plasma cut is setting the right amperage to thickness and keeping the torch slightly above the surface you are cutting without touching the plate. You also need a steady hand, and don't move too fast. If you go too fast the spatter will shoot back at you. You also need clean dry compressed air with the right pressure setting. Most plasma cutters have recommended flow rates for their machine. Usually 65 psi. for a 50 Amp machine as an example. Also make very sure you have a new electrode and nozzle since these parts wear out and will effect cut quality.

Are you using an automated table plasma cutter or hand held plasma cutter? If you are using an automated plasma cutter then you would set voltage to control torch stickout.
__________________
A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

It is not the destination, it's the journey.
KTM640Dakar is offline   Reply With Quote
Old 03-05-2007, 09:43 PM   #8
KTM640Dakar OP
Motorsick
 
KTM640Dakar's Avatar
 
Joined: Nov 2004
Location: Oxbow Lake
Oddometer: 2,053
Quote:
Originally Posted by Gordy
OK, this should be easy.

I need to weld some aluminum. I have one of the Lincoln 220V wire feed machines. I am using Argon. Can I just buy some aluminum wire and use the Argon? This is not a critical weld on a frame or anything.

I know............I need a TIG.
Yes use argon 100% and get some 3/64 Superglaze 4043 wire. You will also need a teflon liner for your torch and 3/64 or (.047inch) U-grooved drive rolls for your welder. When you get ready to weld set your drive roll pressure in the wire feeder so that it is enough pressure to push the wire but not bird nest the drive rolls if you fuse a tip. Usually you will set the drive roll pressure for aluminum a lot less than for steel wire.

The hardest part about MIG welding aluminum is getting the wire to feed through your welding gun, so keep the welding cable of your gun as straight as possible so the aluminum wire will not have to go through too many curves in the gun cable/liner. That is why you use a Teflon gun liner to reduce friction. There is also a sticker on the inside door of most Lincoln welders that has recommended settings for different thicknesses of metal, as well as different weld wires (like 3/64 dia, Aluminum wire).

If you are using the smaller SP175 220V machine then you might have to use .035 diameter wire.

The best way to MIG weld aluminum is with a spool gun or push/pull gun.
__________________
A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

It is not the destination, it's the journey.
KTM640Dakar is offline   Reply With Quote
Old 03-05-2007, 09:47 PM   #9
KTM640Dakar OP
Motorsick
 
KTM640Dakar's Avatar
 
Joined: Nov 2004
Location: Oxbow Lake
Oddometer: 2,053
Quote:
Originally Posted by scooteraug02
Where is the best place to learn to weld?

I was watching a show on CMT, they were fixing up a guy's dump truck and used a plasma cutter tool to cut 2" holes for round lights. The tool was fast and worked like a compass. What is that tool and what other cutting tools are available.

You weld something critical and it needs to hold up. How do you know the weld is strong or correct without beating up your project testing the weld?

Is it true a beer can can be welded if the welder is skilled?

Does grinding a weld weaken it?
There are welding classes at most community colleges.

Here is a motorsports training program: http://www.lincolnelectric.com/en-us...ls-course.aspx

http://www.lincolnelectric.com/en-us...on-center.aspx
__________________
A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

It is not the destination, it's the journey.

KTM640Dakar screwed with this post 02-12-2012 at 06:02 PM
KTM640Dakar is offline   Reply With Quote
Old 03-05-2007, 09:52 PM   #10
Gordy
Team Listo
 
Gordy's Avatar
 
Joined: Dec 2001
Location: NM
Oddometer: 22,199
Thanks man, I'll try it out.
Gordy is offline   Reply With Quote
Old 03-05-2007, 10:23 PM   #11
G-Force Junkie
Beastly Adventurer
 
G-Force Junkie's Avatar
 
Joined: Jul 2005
Location: Castaic, Ca (So.Cal.)
Oddometer: 1,328
Quote:
Originally Posted by scooteraug02

Is it true a beer can can be welded if the welder is skilled?
Yes, bottom to bottom, but they have to be empty I probaly got some around the shop I've done, I'll see if I can find them.

Mike
Welder/Fabriator
G-Force Junkie is offline   Reply With Quote
Old 03-05-2007, 10:55 PM   #12
tpunzy
liquid cooled
 
tpunzy's Avatar
 
Joined: Apr 2006
Location: Edgerton Wi
Oddometer: 2,325
I have tried it with no good coming of it

What the heck is the trick to torch welding (oxy/fuel) aluminum?????? I have seen it done with good results(by an oldtimer), but I (for what ever reason) just don't get it????????????
tpunzy is offline   Reply With Quote
Old 03-05-2007, 11:05 PM   #13
Poolside
Syndicated
 
Poolside's Avatar
 
Joined: Apr 2003
Location: Long Beach, CA
Oddometer: 11,865

Quote:
Originally Posted by KTM640Dakar
To cut 1/4 inch plate you will need about 30 Amps. With plasma cutting the voltage is determined by the distance of the tip to the plate you are cutting. You don't really set the machine voltage on a hand held plasma cutter, you set amperage.
That's pretty good. You are the first person, Welding Engineer or otherwise, that went right to arc length.

Yea I get that. That the physics of the plasma in any particular gas, in this case air, set the arc voltage over the arc length.

I was just thinking that you might have played around and measured that voltage with a meter, or looked at it on a scope.

I realize I am asking more of a mechanical question. More like "How far back is the electrode from the face of the 'swirl cup' nozzle?" Or terms to that effect.

So, say select one of your more popular Lincoln hand held plasma torches. What is that dimension?

- Jim

__________________

IICE Air Hotrod your GS  Fuel Injection  Tech Info  Buy  Order List  Installation
Poolside is offline   Reply With Quote
Old 03-05-2007, 11:22 PM   #14
LoFlow
Studly Adventurer
 
Joined: Feb 2005
Location: Kitsap
Oddometer: 961
OK, Here is my question.
On my tig torch I use the old fashioned cups. The brownish red ones. I see on these chopper shows their using clear cups that don't appear to have any neck down to them. I have heard they use less argon for shielding.
Do you have any info or opinions on those? Thanks
LoFlow is offline   Reply With Quote
Old 03-06-2007, 07:34 AM   #15
scooteraug02
Dog Rancher
 
scooteraug02's Avatar
 
Joined: Feb 2003
Location: Atlanta, GA
Oddometer: 4,514
Here's the tool I was talking about



__________________
scooteraug02 is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 05:24 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014