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OK, I have had a cheap MIG for about 1.5 years now. I have only used it a hand full of times and usually the results are pretty crappy. I am pretty sure that the majority of my problems are with getting the heat/feed setting right and I believe that the next time I weld I am going to pull the machine out and work on the settings before I do the actual job. Would I be correct in assuming that I could get some light sheet metal and find a good setting (heat/feed) for that then find some heavy metal and find a good setting for that. Once I have those sets of number I could just sharpie them on the side of my welder and always use those numbers for most jobs I have?One more question. When I purchased my MIG a guy sold me some expensive tri-mix gas and some 309 (I think) wire. If I am NOT welding stainless would that stuff contribute to poor welds?
Reply:I've never tried to use 309 stainless wire and a tri-mix gas to weld mild steel, so I can't tell you what the results might be, but I can tell you that if you are welding mild steel and you use regular ER70S6 or S2 wire of an appropriate diameter for your machine and the material you're welding, and an argon/co2 mix gas of 75% argon/25% co2 or 85% argon/15% co2, if you have a problem with the welds it won't be because the gas or wire aren't right for the job.If what you primarily weld with your machine is light gauge sheet and very thick sections, then yes, by all means, find good settings for those two scenarios and write them down somewhere. I have found that on most of the migs I have tried, if I set the voltage and wire feed speed dials at about equal points on each dial, that will get me close to a setting I can weld with and then tweak it from there.Yes, it is always a good idea to run some practice beads on material similar in size and joint type to what your project will be so you can tweak your settings and torch manipulation, before welding on the project. Practice, practice, practice, and study up on correct procedure, settings, joint prep, etc and your welds will surely improve with time!MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:Just my .02 worth! Set your voltage and run the wire until it hits bottom and back off, that is the cosrrect wire feed speed for the voltage you have selected. If not hot enough, increase the volltage and repeat the feed rate. JohnSMAW,GMAW,FCAW,GTAW,SAW,PAC/PAW/OFCand Shielding Gases. There all here. :
Reply:Can you tell us which machine you are using?? That would help a lot. Weldgault(John) is describing the process, but many welding machines don't show voltage, or amperage output. Only 1-10, or A-D,E, etc. If that is the case, try about 5 for the heat, and about 4.5 for the wire speed. This is for steel, and is a basic start point. Like John said, go up and down slightly with the parameters until it gets right. And as for what desertrider33 said, switch over to er70s6 or s2 wire for steel. 309SS is okay, but it has different characteristics than regular steel. It is generally used for SS to regular steel junctions, and for unknown grades of SS, or different grades of SS, like say 304 to 17-4, or 316. As for trimix, I am not sure, but I suppose it would be fine. Probably an overkill for the situation, but I do know it is used to get better looking welds on SS. I use pure argon for SS welding, and 80/20 gas for steel mig work.And then, after so much work...... you have it in your hand, and you look over to your side...... and the runner has run off. Leaving you holding the prize, wondering when the runner will return.
Reply:I would go buy a cheap micrometer so that you can write down the settings for exact sizes of metal instead of just thin and thick. I have that on all my machines, I figure out good settings and write them down, a basic starting-point is 1 amp per .001" of metal, but some welders claim more power than they actually have and others put out more than they claim, so you have to experiment and figure out what works.
Reply:[QUOTE=Rojodiablo]Can you tell us which machine you are using?? That would help a lot.It is a cheap HF 151T 220V MIG. It has a dial for wire settings but only 4 settings for heat (Low 1&2, and High 1&2). I appreciate all the tips! I'll probably get a chance to play with it in a few days when my work week ends. Thanks guys!
Reply:[QUOTE=rmcelwee][QUOTE=Rojodiablo]Can you tell us which machine you are using?? That would help a lot. It is a cheap HF 151T 220V MIG. It has a dial for wire settings but only 4 settings for heat (Low 1&2, and High 1&2). I appreciate all the tips! I'll probably get a chance to play with it in a few days when my work week ends. Thanks guys!
Reply:Originally Posted by rmcelweeOK, I have had a cheap MIG for about 1.5 years now. I have only used it a hand full of times and usually the results are pretty crappy. I am pretty sure that the majority of my problems are with getting the heat/feed setting right and I believe that the next time I weld I am going to pull the machine out and work on the settings before I do the actual job. Would I be correct in assuming that I could get some light sheet metal and find a good setting (heat/feed) for that then find some heavy metal and find a good setting for that. Once I have those sets of number I could just sharpie them on the side of my welder and always use those numbers for most jobs I have?One more question. When I purchased my MIG a guy sold me some expensive tri-mix gas and some 309 (I think) wire. If I am NOT welding stainless would that stuff contribute to poor welds?
Reply:The more the Co2 in the gas, the more the penetration. You can't get a good weld with 98/2. Its for spray arc or pulsed spray.If you want it to look like tig, then get out the tig torch!DavidReal world weldin. When I grow up I want to be a tig weldor.
Reply:Originally Posted by William McCormick JrI have done some pretty heavy welding with other peoples tiny machines. I usually recommend that they get 0.023 wire and some 98/2 Argon/Oxygen mix. The reason is you can stay in one spot without burning up the puddle. Or spattering it. The high Argon content keeps the puddle clean. By staying and preheating you can get your heat up, and then move along rather slowly and get great penetration. With a little side to side wiggle you can get some nice stuff done. Some people thought it was TIG welded. Sincerely, William McCormick
Reply:Originally Posted by weldgaultWilliam, the argon does not clean the puddle! it is inert and the best gas for current transfer, so it shields the puddle from the atmosphere. The filler rod is what cleans the weld pool and if is carbon steel, it can oxidize with the 2% oxygen and that is a good reason to use ER70S-2 wire. Short and sweet. John
Reply:Willy, you and I got into this on a different furom. I didn't believe you then so I decided to learn a little more and even go out and try some of your idea's. 98% argon / 2% 02 is crap as far as I am concerned when it comes to penetration on a weld. I use CO2 and C25 and will continue for as long as I weld. Their are some other good mixes out there as well but I will stick to work works. Arigas did a little show where I live. I asked about this 98/2 gas and they don't recommend it on welds that need penetration and strength. I wish you would stop preaching this stuff. their are a lot of full time top welders here that can help with others problems.Miller DVI2Lincoln Precision Tig 225Thermodynamics Cutmaster 38Everything else needed.
Reply:http://www.Rockwelder.com/EastWood/bus/bus1.jpghttp://www.Rockwelder.com/EastWood/bus/bus2.jpghttp://www.Rockwelder.com/EastWood/bus/bus3.jpgThese are some pics from a while back. These welds are strong and pliable. The 98/2 Argon/Oxygen allowed me to use a machine that would or could not weld this material with Argon alone. It leaves almost no spatter. That is pretty much how it looked all along. One wrong tack took two of us almost a minute to break. Sincerely, William McCormick Attached Images
Reply:Originally Posted by jamlitWilly, you and I got into this on a different furom. I didn't believe you then so I decided to learn a little more and even go out and try some of your idea's. 98% argon / 2% 02 is crap as far as I am concerned when it comes to penetration on a weld. I use CO2 and C25 and will continue for as long as I weld. Their are some other good mixes out there as well but I will stick to work works. Arigas did a little show where I live. I asked about this 98/2 gas and they don't recommend it on welds that need penetration and strength. I wish you would stop preaching this stuff. their are a lot of full time top welders here that can help with others problems.
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Reply:duplicate postLast edited by William McCormick Jr; 12-28-2007 at 10:44 PM.
Reply:http://www.Rockwelder.com/WeldingWeb...gonOxygen1.jpghttp://www.Rockwelder.com/WeldingWeb...gonOxygen2.jpgThese are articles from Lincoln Electric about this process. It is an awesome process as far as MAG welding steel goes. There are little tricks to getting right. If anyone is interested I would be happy to share them. Sincerely, William McCormick
Reply:Well, as always, more than one way to skin a cat. Thanks for the ideas, and the inputs.And then, after so much work...... you have it in your hand, and you look over to your side...... and the runner has run off. Leaving you holding the prize, wondering when the runner will return.
Reply:Willy, that book shows 98/2 only for spray mode. No where does it say for short circuit.If this works and you are the only one in the universe that can do it, show us. Make a few welds, cut them apart, etch them........98/2 is not for MIG welding! DavidReal world weldin. When I grow up I want to be a tig weldor.
Reply:Originally Posted by David RWilly, that book shows 98/2 only for spray mode. No where does it say for short circuit.If this works and you are the only one in the universe that can do it, show us. Make a few welds, cut them apart, etch them........98/2 is not for MIG welding! David
Reply:Originally Posted by David RWilly, that book shows 98/2 only for spray mode. No where does it say for short circuit.If this works and you are the only one in the universe that can do it, show us. Make a few welds, cut them apart, etch them........98/2 is not for MIG welding! David
Reply:Originally Posted by jamlitDave buddy you made my day. I went all through this before and hated myself for even posting on it here. Everytime I asked someone about this amazing gas they all looked at me like I was nuts. When one of the company's that make gases for welding did a show and showed up and asked about this they said basically the same as you did. 98/2 can be used in some robotic mig application but its a little different setup. Now I was to understand that pure argon and mixes that were 90% or higher in argon were not mig gases. High argon content makes the weld look great but no real penetration. I have used CO2 most of the time and found it to work great. It may not be the best gas but it does work. I am switching to C25 for my next tank.
Reply:Originally Posted by William McCormick JrWho is Airgas? They will go with whatever the crowd is yelling for. I do not. Sincerely, William McCormick
Reply:Originally Posted by William McCormick JrIf you go back and read that well. You will see that 98/2 spray transfer easily lends itself to robotic welding application. Usually any process that is done by robot is a strong forgiving process. Because of its tolerance to slight changes that a robot cannot automatically adjust for.But you said you tried and did not like it. I have people come and look at the welds and accuse me of using TIG. They could not tell. What is so funny about this is that this weld penetrates insanely. With no gap. A tiny chamfer to remove cutoff slag. It is not good for uphill welding unless you start and stop. And you can with this mix. Sincerely, William McCormickToday I did a little test. Ran 98/2 on the MIG. .035 wire, 100, 200, 300 and 400 ipm. Penetration was crap. I even chiseled the 100 ipm bead off the piece of 3/8 plate. Look for pics later. 98/2 is for spray welding. The 02 oxidizes the weld when attempting to mig with it. Penetration is almost ZERO. Mr. McCormick, you are wrong.Again if you want it too look like tig, use TIG.DavidReal world weldin. When I grow up I want to be a tig weldor.
Reply:Originally Posted by David RToday I did a little test. Ran 98/2 on the MIG. .035 wire, 100, 200, 300 and 400 ipm. Penetration was crap. I even chiseled the 100 ipm bead off the piece of 3/8 plate. Look for pics later. 98/2 is for spray welding. The 02 oxidizes the weld when attempting to mig with it. Penetration is almost ZERO. Mr. McCormick, you are wrong.Again if you want it too look like tig, use TIG.David
Reply:Originally Posted by jamlitWilly, you and I got into this on a different furom. I didn't believe you then so I decided to learn a little more and even go out and try some of your idea's. 98% argon / 2% 02 is crap as far as I am concerned when it comes to penetration on a weld. I use CO2 and C25 and will continue for as long as I weld. Their are some other good mixes out there as well but I will stick to work works. Arigas did a little show where I live. I asked about this 98/2 gas and they don't recommend it on welds that need penetration and strength. I wish you would stop preaching this stuff. their are a lot of full time top welders here that can help with others problems.
Reply:Originally Posted by jamlitWow, at least you admit to it being able to do robotic welding this time. the guys at Airgas said that is would make a pretty weld with easy and that a beginner would think it was great, but the weld would be weak and the penetration would not be their. C25 is 75% argon and 25% CO2. this mix according these people is one of the best gases for mig welding as the argon allows for a good looking weld and less contamination and the CO2 gives it enough heat for penetration. Also this mix gives a strong weld. 98/2 is not recommended for regular mig welding no matter how much bull crap for spread. It amazes me that you never heard of Airgas. As Microzone posted above, any person that deals with mig welding has either herd of them or dealt with them. Where do you get your information from ?.
Reply:Billy, why would anyone here believe you if you claimed to have done something? With all the crackpipe crap you have bombarded us with you have made yourself out to be truly unbelieveable.
Reply:Originally Posted by Alan NBilly, why would anyone here believe you if you claimed to have done something? With all the crackpipe crap you have bombarded us with you have made yourself out to be truly unbelieveable.
Reply:I got some pictures just to show you that this 98/2 is useful. I used it at 25 cubic feet an hour. It seems to get hotter the more gas you add. Unlike pure Argon. I did some half inch plates just to show that it has penetrating power. Even with 0.023 wire. http://www.Rockwelder.com/WeldingWeb/98-2/982.jpghttp://www.Rockwelder.com/WeldingWeb/98-2/miller185.jpghttp://www.Rockwelder.com/WeldingWeb/98-2/halfinch1.jpghttp://www.Rockwelder.com/WeldingWeb/98-2/halfinch2.jpghttp://www.Rockwelder.com/WeldingWeb/98-2/halfinch3.jpghttp://www.Rockwelder.com/WeldingWeb/98-2/halfinch5.jpghttp://www.Rockwelder.com/WeldingWeb/98-2/halfinch6.jpghttp://www.Rockwelder.com/WeldingWeb/98-2/11g1.jpghttp://www.Rockwelder.com/WeldingWeb/98-2/11g2.jpghttp://www.Rockwelder.com/WeldingWeb/98-2/11g3.jpgJust wanted to end the idea that it can only make cold welds. Sincerely, William McCormick
Reply:Here are two other views.http://www.rockwelder.com/WeldingWeb/98-2/halfinch4.jpghttp://www.rockwelder.com/WeldingWeb/98-2/halfinch8.jpg Sincerely, William McCormick
Reply:The first time i used 98-02 was in the 1970s, it worked great then as well as now. Excellent for spraying mild steel.
Reply:Originally Posted by William McCormick JrHere are two other views.http://www.rockwelder.com/WeldingWeb/98-2/halfinch4.jpghttp://www.rockwelder.com/WeldingWeb/98-2/halfinch8.jpg Sincerely, William McCormick
Reply:Originally Posted by ShieldArcThe first time i used 98-02 was in the 1970s, it worked great then as well as now. Excellent for spraying mild steel.
Reply:Originally Posted by William McCormick JrThen took my son to the cider mill, and they needed an extra guy, I volunteered to skin core slice and clean apples, and then I mopped up.
Reply:Was that in spray transfer?MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:Originally Posted by Alan NWhat did they do with all those apples you helped process?
Reply:Originally Posted by David RDoesn't look like tig to me.David
Reply:Originally Posted by DesertRider33Was that in spray transfer?
Reply:Originally Posted by DesertRider33Was that in spray transfer?
Reply:100 ft./min. ?!? That is MOVING for a little MIG welder!! So, you're MIG welding 1 foot every 1.666666666 seconds....WHOA! Are you sure you don't mean 100 inches/min. ? John - fabricator extraordinaire, car nut!- bleeding Miller blue! http://www.weldfabzone.com
Reply:Yup, Willy is fast John, that why we all can't keep up with him I looked down all your pictures and I wasn't impressed at all. Your welds would fail where I work and the amount a grinding to clean up the welds would cost a small fortune and take more time then I have to complete a job. I also notice that you didn't show a cut away piece. What you showed I could do with my old 110 mig and CO2 and show better penetration on the ends at least. I just don't understand how you say what a great gas this is when all the gas dealers say different for what you are showing. The gas was design for a intended use where it works very well. Curious, do you own some shares in this gas and are trying to convert us all over to it ?Anyone owning a 110 mig, Don't waste your money trying this gas.Miller DVI2Lincoln Precision Tig 225Thermodynamics Cutmaster 38Everything else needed.
Reply:Originally Posted by jamlitAnyone owning a 110 mig, Don't waste your money trying this gas.
Reply:Here is the title of the thread Give me some good MIG settings advice.The original poster has a small cheap mig. 98/2 is the wrong gas for that machine. Willy, why are you trying to tell him to use it?DavidReal world weldin. When I grow up I want to be a tig weldor.
Reply:Originally Posted by David RHere is the title of the thread Give me some good MIG settings advice.The original poster has a small cheap mig. 98/2 is the wrong gas for that machine. Willy, why are you trying to tell him to use it?David
Reply:One more question. When I purchased my MIG a guy sold me some expensive tri-mix gas and some 309 (I think) wire. If I am NOT welding stainless would that stuff contribute to poor welds?
Reply:Originally Posted by weldgaultOne more question. When I purchased my MIG a guy sold me some expensive tri-mix gas and some 309 (I think) wire. If I am NOT welding stainless would that stuff contribute to poor welds?
Reply:Originally Posted by jamlitYup, Willy is fast John, that why we all can't keep up with him I looked down all your pictures and I wasn't impressed at all. Your welds would fail where I work and the amount a grinding to clean up the welds would cost a small fortune and take more time then I have to complete a job. I also notice that you didn't show a cut away piece. What you showed I could do with my old 110 mig and CO2 and show better penetration on the ends at least. I just don't understand how you say what a great gas this is when all the gas dealers say different for what you are showing. The gas was design for a intended use where it works very well. Curious, do you own some shares in this gas and are trying to convert us all over to it ?Anyone owning a 110 mig, Don't waste your money trying this gas. |
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发表于 2021-9-1 00:03:00