I'm a media blaster and I see a lot of differn't size and types of welds. I also own a Syncrowave 200. I see welds on things like piper cub planes and a lot of stainless steal food machinery that are realy small maybe 1.5-3mm across. Today I took home a stainless sink out of the scrap bin and cut it up, and The smallest weld I can make on it is ~4mm. How are these small welds made? I'm trying to do this on a Fillet T-joint.
Announcement
Collapse
No announcement yet.
Small TIG Welds
Collapse
X
-
with a smaller tung. and cup, or with a inverter and a smaller torch, or an O/A setup with a small torch. it realy all depends on the situation and the welder doing the weld.
i think the syncrowave came with a W17 torch, replace that with a wp50 or mt 125 micro torch, like in the link or the pic posted.
Arc-Zone.com : Page Not Found - Connectors, Cable, & Adapters MIG Guns, Feeders & Parts Plasma Arc Cutting Plasma Arc Welding Purge Gas Equipment Remote Amperage Controls TIG Torches & Accessories Tungsten Electrodes Tungsten Electrode Grinders Water Coolers, Coolant & Parts Gas Flowmeters, Heaters, Mixers Stick Electrode Holders Shop Tools & Storage Apparel, Helmets & PPE Oxy Fuel Cutting & Welding Ground & Work Clamps TIG Welding Filler Rod Close-Out Products Welding Machines & Upgrades Weld Tables JIG & Fixturing Tools Automation & Positioners
turn down the amps and go for it.its all about the right tool for the job.
the syncrowave is a great TIG unit but as its a transformer it will have a little larger arc than an inverter but can still produce some fine welds, but with a 3/32" tung. you can only get so small. you might try going down to a 1/16" tung. i dont know what came with the syncro200 but you can always get smaller tung. and cups as well as a smaller torch if the job calls for it.Attached FilesLast edited by fun4now; 12-12-2007, 08:17 PM. Reason: inverter it will have a little larger arc than an inverter ..ooopsthanks for the help
......or..........
hope i helped
sigpic
feel free to shoot me an e-mail direct i have time to chat.
[email protected]
summer is here, plant a tree. if you don't have space or time to plant one sponsor some one else to plant one for you. a tree is an investment in our planet, help it out.
JAMES
-
almost forgot, welcome to the boardthanks for the help
......or..........
hope i helped
sigpic
feel free to shoot me an e-mail direct i have time to chat.
[email protected]
summer is here, plant a tree. if you don't have space or time to plant one sponsor some one else to plant one for you. a tree is an investment in our planet, help it out.
JAMES
Comment
-
I wish I could help you with your question but unfortunately I'm not very knowledgeable with TIG welding, But as fun4now said welcome to the bord I really hope you enjoy your time on this site. I know the guys on here have made my time on this site enjoyable and everytime I leave this site I know a little more then before I signed onThanks for reading I hope my post helped
Ryan
Comment
-
I have a tiny little flex head torch,rated for under 100 amps, and run a 1/16" tungston. I still use 1/16" filler but have heard of guys using mig wire as was discussed a few weeks back. I know you probably did this, but make sure you have a really good clean sharp point and a small cup that will allow you to get in close and personal.
Comment
-
they bring up an exilent point about the filler wire. some things can be welded without any but always remember to use filler when doing aluminum. the heat of welding burns out some of the chemical make up of the aluminum and without filler it will not hold. magneaseum and silicone burn out fast and need to be replaced. filler wire is higher in thease 2 components to insure a good suply to feed the starter metal. 4XXX series is higher in silicone and 5XXX is higher in magneseum.
i have used MIG wire for filler befor with good results. i dont know what the $$ breakdown would be as fare as witch is cheaper in the long run to use, probly MIG wire, but if you run out of filler you can always grab a few ft. of mig wire to finish up, so keep that in the back of your head incase you need it.nothing worse than running out of filler with only a few inches left to weld.
thanks for the help
......or..........
hope i helped
sigpic
feel free to shoot me an e-mail direct i have time to chat.
[email protected]
summer is here, plant a tree. if you don't have space or time to plant one sponsor some one else to plant one for you. a tree is an investment in our planet, help it out.
JAMES
Comment
-
The only aluminum alloy I ever welded successfully without filler was 3003. Aluminum Manganese alloy. Many high end truck tool boxes are fusion welded when using 3000 series material. Other than that specifically, I've never had success with other aluminum alloys. Thanks for the info Fun4now.
When I worked at Rocky Mountain Bicycles we used 0.035 ER70S-6 wire to weld the Cr-Mo frames. I've used .023 gmaw wire for making super small welds, 1.5 -2mm in width.Jonny
Dynasty 300DX
Esab PCM 1000
Comment
-
I realize this is an old thread, but I didn't see anything about technique in producing small welds...we must do this in aircraft welding. In this project, I had to weld a 321 stainless fin .030" to an oil tank that was .035" thick, and have no penetration to the back side...I have never used a tungsten smaller than 1/16" and wire size of .030"...this is the trick...first have a copper backup purge for stainless, and force the rod into the joint, and carefully walk up the rod, leaving a .050" weld...you need good eyes, steady hand and good concentration to do it...soon it will become second nature.Last edited by Rocky D; 12-12-2007, 10:32 AM.
Comment
-
Originally posted by MadisonHotRods View PostCould you explain this "copper backup purge for stainless"? I am familiar with back purging with argon gas only. How is this copper used?
I think he meant:
Copper backup , purge for stainless
Meaning use a copper backup....and purge for stainless. This is pretty common for thin stainless work like that.
If im wrong I appologize
-Aaron"Better Metalworking Through Research"
Miller Dynasty 300DX
Miller Dynasty 200DX
Miller Spectrum 375 extreme
Miller Millermatic Passport
Miller Spot Welder
Motor-Guard stud welder
Smith, Meco, Oxweld , Cronatron, Harris, Victor, National, Prest-o-weld, Prest-o-lite, Marquette, Century Aircraft, Craftsman, Goss, Uniweld, Purox, Linde, Eutectic, and Dillon welding torches from 1909 to Present. (58 total)
Comment
-
If your thinking about doing thin tubes (like on the piper cub) then the WP-225 torch is worth looking at. It has a flexible neck and you can change the heads out with your gloves on. You can also buy 45, 0 and 90 degree heads:
Search for everything you need for the Weldcraft® W-225 (WP-225) Modular Design with Flexible Coil and Interchangeable Heads. The WP-225 Modular Flex Head allows welding operators flexibility to work on a wide range of TIG applications while minimizing the need for additional torches. Shop today!
Shop for interchangeable heads and more replacement parts for the Weldcraft WP-225 Series TIG torch. Get yours today from the welding experts at Arc-Zone.com.
Use a 1/16 red tungsten and turn the heat down (start at 50 amps). If you have good foot/finger control you can turn the heat up (75 or so) and pulse the foot control. You want to minimize heat input to the part. Either find the lowest amount of continuous heat that you can use or work of using higher amperage for shorter times (will cause the least warping).
You should be aware with thin stainless you should have an inert gas like argon on the back side or you run the risk of certain types of cracking. For flat plate parts to practice on I would not worry about this but if you do anything structural you will want to do some research first.
Comment
Comment