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Hi I ready to buy a TIG welder for welding manly aluminum, it has 0.5-300Hz pulse regulation but Ac output square wave is fixed at 60Hz. Is it possible to make some good welds with this fixed 60hz output or I really need the ac output frequency regulation?The pulse function can partially alliviate the fixed 60hz output "problem"?
Reply:Yes. Only the inverters have adjustable Hz. Many good welds have been done on AC with 60Hz. T.J.www.tjsperformance.comDynasty 300 DXHTP 240HTP Microcut 380Hyperthem 85JD2 Hyd Bender and HF Hyd Ring Roller all in one =(Frankenbender)Bpt. Mill/DRO4' x 8' CNC Plasma TableInstagram: tjsperformanceYT: TJS Welding and Fabrication
Reply:in my opinion if you need frequency regulation to make a decent weld, something is wrong...
Reply:thanks a lot for the help, that exactly what I needed to know.
Reply:What type of machine is it?
Reply:Is it a Chinese TIG AC/DCSame as Jasic 200A Pulsed Ac/Dc welderhttp://cgi.ebay.com/ws/eBayISAPI.dll...ayphotohosting Attached Images
Reply:We see lots of machines like these on ebay.Same layout of the front panel, different cases.Internals might be the same.No idea about quality, EMC compliance etc.
Reply:I hate to say it- but I like the green!
Reply:I just bought this machine It cost me USD579 for the machine + USD375 for shipping via china EMS to my contry (brazil). I still have a lot import duties to pay, so I can only tell the final price when I get the welder in my hands.I will also send more pictures od the machine and the high freq. gap check procedure when the machine arrives.wish me luck
Reply:Well what can I say I got lucky and the welder passed customs without any charges, Yes! The first thing that I did when the machine arrived was open the case and check if anything was not okay. And of course some bolts and on pcb was lose. After fixing that I put some extra zip ties on other loose things and looked the gap on the HF start. I tryed to find the specs for that but didn't come into nothing yet. It should be 1mm? 1,5mm? let me know.Picture of the PCB that was loose:Picture of Machine Connectors:After that I took a videogame pedal to build a foot pedal. Well the machine has to connectors. One with 2 pins and another with 3 pins (see the picture above). My machine came with a switch on the torch that was removed and putted on the pedalPicture of foot pedal:Foot pedal Switch: I got this from a old phone, when the pedal is non-depressed the little bent sheet metal keep pressing the switch and this keep the current from passing trough the switch. When I press the pedal the sheet release the switch and the current can now pass and turn on the machine.Pot: The pot on the panel is a 5K version, so I remove the 21K that was stock on the pedal and putted a 5K version. After some adjustment I got near zero ohms when full depressed and near 4.7K non-depressed.Nondepressed:Depressed:Attached bent sheet metal to activate the switch:video of the pedal:[ame]http://www.youtube.com/watch?v=IcoFqyGArlQ[/ame]The big question: How I hook up the pins on the potentiometer on the machine connector?I only need that information to complete the pedal setup.thanks a lot for the help.Last edited by luizdiefenbach; 07-28-2008 at 03:15 PM.
Reply:I'm a very inpatient guy and couldn't wait, so I made a guess by the color of the wires:Black, Yellow and RedI took the black and put in the middle of the pot after that I measured the resistance on the pot with the pedal fully disengaged and I soldered the Yellow wire on the pin that was showing near 5K with the middle one. The other one was reading about 1,5K when connected with the middle one and I solder the last wire on this pin (red).I turned the panel pot on the machine to the minimum level and turned on the machine.The panel pot became disabled and the amperage became 35amps without touching the pedal. and about 190amps with the pedal fully depressed. So I guess it worked fine.I will try my first welds after I get the HF gap checked... I still didn't find how much is the recommended gapI also found a unplugged connector on the lowest part of panel PCB, so open your machine and check up before turning on your machine Attached Images
Reply:I found the gap for another machine (i think its for a miller): 1,5mm (1/16").I took a 1mm drill rod and tried to pass between the terminals and almost passed so I'm really near 1mm HF gap probably 0,9mm or so. So my guess its the gap is not that large and shouldn't fry the HF starter right away.I'm ready to test for the first time the machine, lets see what I can do.
Reply:The last hi freq machine I had used a gap of .020 or .040" depending on the tip. that would .5 or 1 mm.I don't know about yours.And YES you can make quality welds with it. You will have wide white bands around your welds from the cleaning.DavidEdit: I found this. Some welding with an old AC 60 hz machine and some with an inverter.http://weldingweb.com/vbb/showthread.php...ighlight=guardLast edited by David R; 07-28-2008 at 08:19 PM.Real world weldin. When I grow up I want to be a tig weldor.
Reply:David R, thanks for the reply. The GAP info is very usefull.I just came from my first 2 beads. I think its SAE1020 Steel 4mm tick.I set the Machine:10L/min ArgonPost flow in the middle position (I think is about 5 seconds)Direct polarityEvery other pot on minimum.First I pressed the pedal with the torch far from the piece to see if the gas would work, I just heard a click. It worked perfectly.So I positioned the torch near the working piece and pressed the pedal, the arc was started nicely, I don't remember hearing nothing odd from the HF start. So The GAP should be ok as I read that you can hear when the GAP is off specs.I will start another newbie "first beads" thread so you can help me with my weldthanks
Reply:You can cut the gas flow in half. More welding per bottle.Real world weldin. When I grow up I want to be a tig weldor.
Reply:I'm losing you guys....Where's the GAP, what's it exactly for and why would that decrease gas usage.All new input for me....
Reply:Originally Posted by ElGuapoI'm losing you guys....Where's the GAP, what's it exactly for and why would that decrease gas usage.All new input for me.... |
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发表于 2021-8-31 23:56:59