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Howdy, i got my welder last year but havent had the time to start learning until now. bearing this in mind this is the first time ive ever welded anything with any type of machine so i got a few questions if thats okay. and dont laugh too much at the welds LOL.Heres what i have to work with (reading off the packets)- lincoln invertec 145s lift tig- 100% argon gas- 1.6mm x 175mm 2% thoriated (WT20) ground annealed tungstens- AWS R45 1.6mm Black mild steel filler rodim planning to do a lot of work with box section in the future and also 3mm - 6mm mild steel plate so just want to check those tungstens and filler rods are the right size. first attempt at making a weld pool and keeping it going, going in a circular motion.find it a bit hard to keep it consistent and straight, im holding the torch like a pen and its a bit tricky to keep it going in a perfect motion, but i guess that comes with practice. some filler rod - eeekim guessing i didnt have enough amps in that as its just big blobs sitting on top. its 6mm plate and was welding at ~ 100amps. soo question time 1) what tungsten thickness should i be using for the different thickness metals2) i have no idea how to decide on how many amps to use.. any pointers there would be tops3) gas flow! once again no idea how much to use. i went for the most is best approach and was using 12 liters per hour or so but if theres a specific formula that would help.4) how should i be holding the torch? like i said earlier im trying to hold it like a pen with the torch at about a 45 degree angle pointing towards the direction of travel. i seem to have problems blowing the end of the filler off or getting the filler stuck to the metal well ahead of the weld pool. one other thing i did grind the end of the tungsten down to a sharp tip and ground the metal back with a flap disk.and bearing in mind its a very very basic machine. no foot pedal or gas valve or anything just has a manual valve control on the back of the torch and an amp dial on the front of the machine. any points would be fantastic. im slowing getting through this welding book and geez tig is an art. i really want to get good at this and have all the time in the world to practice!thanks for any help!
Reply:Originally Posted by Glenany points would be fantastic.
Reply:A warm welcome to you too! I think i might find a different forum at this rate Ive been practicing a little more tonight making more of a continual J motion which seems to work alot better for me. As well as cranking the amps right up and moving a fair bit faster. to get good penetration without blowing through.Any pointers with regards to the gas flow neccessary would be great as this setup doesnt have real adjustability during the weld.
Reply:Glen,that really does not look too bad. The shielding looks pretty good on the autogeneous welds, a little worse on the welds with filler. The filler does look excessive and irregular. A couple things to think about:1. Maintain a steady arc length of no more than 1/8", a longer arc spreads the heat too much and increases shield problems. The porosity at the start of one weld may have been due to a long arc.2. Try straight line torch movement at a constant speed, or if you find it easier, pause when you dip the filler, but try it without circular or side to side weaving, it may be easier to control.3. Dip the filler into the puddle to melt it, do not melt of filler with the arc above the puddle and let it blob in. The ripples in the weld with reflect every torch movement and wire dip, so try to be hold a consistent rhythm for both.Thanks for sharing the photos.
Reply:20 CFH or 10 L/mnEd Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:Originally Posted by 69 chevyYou'll never master TIG welding if you insist on taking short cuts such as the ones in your very first post...lack of CAPITAL letters and punctuation marks. Or are you just lazy? Remember, perfect practice makes perfect.
Reply:Originally Posted by pulser3. Dip the filler into the puddle to melt it, do not melt of filler with the arc above the puddle and let it blob in. The ripples in the weld with reflect every torch movement and wire dip, so try to be hold a consistent rhythm for both.Thanks for sharing the photos.
Reply:Originally Posted by GlenA warm welcome to you too! I think i might find a different forum at this rate
Reply:Looks pretty good for a first time to me. The key is practice, practice, practice and then practice some more. Go to Lincoln and Millers websites and read their info on GTAW. A lot of useful info there.The difference between art and craft is the quality of the workmanship. I am an artist.
Reply:Originally Posted by TSORYup, and we're all perfect here!
Reply:sorry i tried to join in,i must have done something wrong,i recieved a infraction for above post.no offense intended fellows. WeldingWeb - Welding forum for pros and enthusiasts > User Control Panel > Private Messages > Inbox You have received an infraction at WeldingWeb - Welding forum for pros and enthusiasts Welcome, kevin fab.You last visited: 08-04-2008 at 09:47 PM Private Messages: Unread 0, Total 2. Your profile | Your threads | Your posts User CP FAQ Members List Calendar New Posts Search Quick Links Log Out Search Forums Show Threads Show Posts Advanced Search Quick Links Today's Posts Mark Forums Read Open Buddy List User Control Panel Edit Signature Edit Profile Edit Options Miscellaneous Private Messages Subscribed Threads My Profile Who's Online Go to Page... Control Panel Settings & Options Edit Signature Edit Email & Password Edit Profile Edit Options Edit Avatar Edit Profile Picture Private Messages Folders Inbox Sent Items List Messages Send New Message Track Messages Edit Folders Subscribed Threads Folders Subscriptions List Subscriptions Edit Folders Miscellaneous Event Reminders Buddy / Ignore Lists Attachments Private Message: You have received an infraction at WeldingWeb - Welding forum for pros and enthusiasts Today, 10:21 PM David R Moderator Join Date: Feb 2007Location: West By Golly Shelby NYPosts: 4,494 You have received an infraction at WeldingWeb - Welding forum for pros and enthusiasts --------------------------------------------------------------------------------Dear kevin fab,You have received an infraction at WeldingWeb - Welding forum for pros and enthusiasts.Reason: Hijacked thread to generate conflict-------Hijacked thread to generate conflict-------This infraction is worth 10 point(s) and may result in restricted access until it expires. Serious infractions will never expire.Original Post:http://www.weldingweb.com/vbb/showthread.php?p=205210Quote:Quote:Originally Posted by TSOR Yup, and we're all perfect here! yep,i agree.the welds ae looking good just use more acetone,and lots more heat. All the best,WeldingWeb - Welding forum for pros and enthusiasts__________________Lots of equipment,Just enough knowledge to be dangerous!
Reply:i dont want to take a chance and get an infraction but what did he say that was wrong? all he said was use acetone and more heat. i didnt think he was trying to generate conflict.
Reply:just heavy handed censorship..... I got one too in another thread asking why a post was deleted......There are better places to be where they dont want to stifle your comments.....This is getting to be like China where you cant say a thing....
Reply:No prob... If I get them, I'll earn them........No, David is not zapster....Dave is a pretty fair guy, just has to follow some heavyhanded policies zapster was a mediocre welder that thought he was a god...he left in a huff when he got criticized....
Reply:i noticed you are using r45, that is for o/a welding. for tig you will need er70s (2 or 6)and welcome to the forumMillermatic 211weldpack 3200 squirtgunsquare wave 200victory journeyman kitHypertherm 30xptoo much other crap to listtinkerer extraordinaire
Reply:kmaysob, thanks for reminding us...Glen, welcome to the forum, hope you like it here, please pardon our little hijack....
Reply:Originally Posted by kmaysobi noticed you are using r45, that is for o/a welding. for tig you will need er70s (2 or 6)and welcome to the forum
Reply:i just joined to become a better welder,trying to refine my welding a little.and i have been belittled and informed of a infraction,mainly i think because im a minority.it is hard enough being a minority business owner.
Reply:Originally Posted by kevin fabmainly i think because im a minority.
Reply:Originally Posted by dreamcatcher25usi dont want to take a chance and get an infraction but what did he say that was wrong? all he said was use acetone and more heat. i didnt think he was trying to generate conflict.
Reply:Originally Posted by kevin fabi just joined to become a better welder,trying to refine my welding a little.and i have been belittled and informed of a infraction,mainly i think because im a minority.it is hard enough being a minority business owner.
Reply:The more i think about if any question or simple statement someone posts on here is going to get you an infraction i don't think i will be coming back to this site.Last edited by dreamcatcher25us; 08-07-2008 at 06:40 PM.
Reply:Originally Posted by dreamcatcher25usThe more i think about if any question or simple statement someone posts on here is going to get you an infraction i don't think i will be coming back to this site.
Reply:Just noticed your rod is listed as AWS R45 1.6mm Black mild steel filler rod which sounds like a gas welding rod rather than for electric welding??? Pulser would know. Often there is not enough deoxidizer in regular oxy-acetylene welding rod and you get little gas eruptions when you finish your TIG bead. At least that is what I think I am seeing.
Reply:I apologize if my post added any fuel to the fire. It was pure sarcasm directed solely at '69 chevy' for his comments to the OP.Kevin Fab, I truly don't believe the action the moderators took towards you has anything to do with being a minority. Don't let a bit of confusion scare you away. With the recent history of events on this board is is understandable why it happened. I suppose we all should be a bit more clear in our posts as sometimes they are misinterpreted.As far as the OP's original post is concerned. Those welds look like you are on the right track! There is tons to learn here and most will be helpful. Keep it up!-JFor the welds, the heat looks good, and most of all I can't see anywhere that you dunked the tungsten.Burn up more rod, and try some ER70S-x (2, 3, or 6). RG45 is for torch welding, not tig. David Real world weldin. When I grow up I want to be a tig weldor.
Reply:Wow,Aren't we all a little sensitive around here lately? We must be having our periods.Seriously, insulting a mans' punctuation. How petty. I wouldn't blame him if he felt like he was in the wrong forum. He probably thought he posted a welding question in the English forum!Since when is Zap a bad guy? Where have I been?
Reply:Really guys,this is usually a great site to learn about welding and I hope you stick around. It takes all kinds. punctuation is not nearly as important as good welding advice on this forum.Bill
Reply:Hey no worries about before,Thanks for the insight into the rod, i didnt tell the guy it was for tig when i picked it up, just asked for steel filler rod . What effect will this have on the welds? even with plenty of gas flow i seem to get some oxidation very shortly after the weld. Thankfully im on my last 2 rods so ill get some of the proper stuff.heres some more practice on a piece of 12mm steel butted up against some 3mm for a project im doing. i thought this would be a good excerise at angled welds and trying to keep the pool even on two thickness metals. the start came out quite nice but the end just fell apart. I think the heat just went out of control. i haven't got any adjustments on the machine so i think i just need to move faster there. Penetration - looks pretty decent?Hopefully when i get the filler rod things will be alot easier. Wondering too if wiping the surface with acetone before welding will make things noticably easier. base prep im just using a flap disk that i use for a multitude of things. And lastly for 90 degree welds (say the inside weld of an L bracket) i seem to have problems with the arc flipping back between each side and that ruins my weld pool leaving a very ugly weld.. what is the ideal technique?The miller website says to point the arc toward the base metal and deposit the filler on the edge which i can do okay but when they are different thickness metals its a little harder and the arc seems to bounce around a fair bit. not too sure what to do there.Thank you very much!
Reply:I don't use a dip action for tig on mild steel. Lay the wire on the plate at about 5 degrees and hold your torch at about 75 degrees then start your arc and move the arc from side to side over the wire. You will see it melt and spread as if spreading butter. Trying to dip the wire is asking for blobs and porisity and sticking tungsten.SA200,Ranger8,Trailblazer251NT,MM250,Dayton225AC,T D-XL75,SpoolMate3545SGA100C,HF-15-1 RFCS-14 When I stick it, it stays stuck!
Reply:How long is your arc? It should be no larger than the size of the tungsten. (electrode) If your arc is jumping back and forth from the plates on a fillet (L) weld, I think you are too far away. Point the arc right into the root of the weld, get a puddle going and move along. The pic above looks like too much heat.Nice startDavid Real world weldin. When I grow up I want to be a tig weldor.
Reply:[QUOTE=Glen;205744]Hey no worries about before,Thanks for the insight into the rod, i didnt tell the guy it was for tig when i picked it up, just asked for steel filler rod . What effect will this have on the welds? even with plenty of gas flow i seem to get some oxidation very shortly after the weld. ER wire or any GMAW wire has extra oxidizers in the alloy that grab any free oxygen in the weld pool. Not having the right filler rod will not have much of an effect on your practice other than the pinholes at the end of the bead. Keep your cup almost vertical and then slide your rod in under the cup. That is why often it is easier to just lay the rod down and run over it. I am a watcher rather than a player when it comes to TIG. Some guys lay the rod in front with a slight pressure so that the rod bends and lays flat. If there is too much filler being used in the joint they simply pull the rod as the torch is running over the tip fusing it to the parent metal.
Reply:I personally think that 69 chevy's comment, although not made in the most polite manner, does have more merit than most realize. The PO was asking for information, using written language to convey that idea. The rules of grammar and punctuation were developed and exist for a greater reason than giving teachers a job; they help define the ideas presented. I visit another site about automobiles, where posts can often be read in more than one way due to sloppy writing; the members whose primary language is French often have worse spelling, yet better punctuation and grammar than the English-speaking members. I've seen some good replies to a post's question, where the OP didn't really mean to say or ask what he actually did. These answers just got him more confused, until someone figured out what he'd really meant to say.By black rod, I assume you mean not copper coated. Except at the beginning of one weld bead, I didn't see any significant porosity, but the weld metal is likely still weaker than the base metal. Until you get some other rod, you might find that cleaning the R45 with steel wool helps.As for practice, when My mother was young, the schools had the children practice making long lines of slightly overlapping circles as part of their penmanship training. I used to think I was lucky because I didn't get that, but later realized that it did develop excellent hand control and have actually practiced that myself since I started TIG and OA welding.
Reply:can you help me with a mIller
Reply:Originally Posted by mooseyeI don't use a dip action for tig on mild steel. Lay the wire on the plate at about 5 degrees and hold your torch at about 75 degrees then start your arc and move the arc from side to side over the wire. You will see it melt and spread as if spreading butter. Trying to dip the wire is asking for blobs and porisity and sticking tungsten.
Reply:Originally Posted by SR20steveI think your talking about the wire lay method of tig welding which requires you to "walk the cup". IMO I don't think this is a good idea for someone who is new to TIG.
Reply:Originally Posted by DeDocan you help me with a mIller
Reply:Any other comments on using wire lay technique on 4130?
Reply:Youtube has some videos that might help a little.
Reply:That last video the welders lens one is awsome, if you click the video and go to his profile he actually has a pretty big range i bought them all they are great but there is 2 dvds about pipe welding but he still goes through the basics so you might want to even check them out
Reply:I have been TIG welding for forty years and never circled, or zig zagged, unless I was covering up something. Just precision movements. One bead at a time. Sincerely, William McCormick |
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发表于 2021-8-31 23:42:37