MIG vs Mill Scale
Vložit
- čas přidán 20. 08. 2024
- see a detailed article on this topic of mig welding over mill scale www.weldingtip...
Visit my store at weldmongerstor... for TIG cup Kits, TIG Fingers, Gloves, DVDs, and other quality welding tools. New products being added weekly.
Follow me on social media to see what I’m up to:
Instagram: / weldmonger
Facebook: / weldingtipsandtricks
Join the discussion with thousands of welders at the Welding Tips & Tricks forum
forum.weldingti...
I am a Welding Engineer who has worked all over the planet as a direct hire for the oil & gas majors for many years. I also worked defense and power gen, have run Inconel lined pipelines across the deserts of the middle east, have built entire plants out of 625, 825 and 6 Mo materials, as well as warships and their CuNiFe piping systems. You Jody are an absolute Master of your craft, and I take my hat off to you.
I have looked at several of your videos and have not found a single mistake in any one of them yet. In fact I reference them in the WPS's I write to help people understand how to do things correctly. First class Jody - rock on & THANK YOU for what you are doing!!
Thanks very much
Wow, congrats from the pro above,
And from the noveice in me, been watching for a couple of years now, really impressed with the tips and tricks.
Thank you. Big thank you.
Ah yes, the fabled beautiful MIG weld only to be broken with a little hammer blow. I've often heard stories of this, but now I've seen it and understand it. Jody, you are salt of the earth.
My findings exactly. Being lazy and not doing proper prep will.... well we see result. Wish you still did more videos. They are so helpful
This is a really important demo of something we all know, but to see an empirical demo of it is fantastic. Thank you for taking the trouble to make these videos.
I would have liked to see one more comparison: clean off the mill scale but weld with exactly the same technique/settings as the first weld. To compare only one variable at a time.
Fantastic video and as always you explain very well and have great arc footage.
Great tutorial on a very common mistake. And that's a cool old wrench! 👊
hey old timer.....glad you commented.....how is the new channel doing? Cheers, Paul in Orlando
thanks Bob. you da man
@@weldingtipsandtricks so are you Mr Jody...so are you....been watching you since 2010 and it has always been great, and I love the Black Tig gloves and tig goodies I have purchased along with tig fingers bought when you first started selling them, cheers, Paul in Orlando
Hay Bob what is your new channel's name? I would like to learn more from you again.
@@bruced1429 Channel is called LetsWeldSomething
I put our roll cage chassis plates in a White vinegar solution container overnight to remove the mill scale. Quick wipe off with water and immediately dried and they weld up beautifully ☺️
I've had great success with white vinegar too! It's cheap, non-toxic and safe. You can leave the steel in longer (1-3 days) if the mill scale is heavy. Best to immerse the metal completely, and use small sticks or plastic bits to separate the pieces of metal so the vinegar can get to all sides. It may help to agitate once or twice, and have the solution be warm. Wipe and rinse the black residue (carbon that has come out of the steel/rust?) and you're good to go. Keep in mind that the fresh metal will now be ready to rust, though.
HD sells the 30% version now too.
Mill scale has a MELTING POINT OF AROUND 3500 DEGREES. The carbonaceous ( high percentage of carbon ) nature is a chemical and physical barrier to Arc welding. IT MUST BE ELIMINATED BY REMOVAL. Hope this demostration inspires others to properly prep before welding. This is particularly true for trailers and other equipment that has cyclic / fatigue stresses. Thank you Jodi.
Good to see you again Jody and thank you so much for teaching me to TIG weld some years ago. I recently graduated from a square wave Lincoln to a nice Dynasty 350 Tigrunner with 101 hours on her clock. She's a sweetheart. My appreciation and respect to you!
You're one of the best tutorial videos, so that everyone can learn to do this correctly and responsfully for a quality work.
Consistently the best welding channel on CZcams.
People call this a mistake when millscale isn't cleaned off, I'd go further and say that it's negligence, because by not cleaning it off you're compromising the weld and depending on the application it could be catastrophic.
Yes, it takes more time to prep, but the results are so much better and ultimately speak for themselves.
Been in this business for over 35 years. When I'm teaching the kids, I emphasize that weld prep is the key to a quality weld. To take the time and do it right. We get paid to do it right. Love your videos and have my mentees watching them too.
Thanks Buddy! I think about all welders know this deep down, but seeing it so clearly demonstrated I know I won’t take that short cut again. Very good video!
It’s funny how the videos you post always correlate exactly to what I’m doing that week in welding school. Great video Jodi, long time fan.
Agreed I was literally speaking about welding over millscale today now this appears 🙈
Great illustration of this all too common misstake!
Great video as usual. The new camera is incredibly clear. Thanks.
I was explaining to a fellow coworker that being extra quick in fabrication
(By Not removing mill scale) doesn’t make your welds pass testing!
Sure enough a week or so later Welding inspector drops in !!!!
Me just doing what I always do!!
“Welding inspector impressed”
Coworker running in circles trying to come up with solutions for problems you shouldn’t get!!! Also totally anxious and doubting himself! Asking me for help!!
Also he ran out of gas mid weld test!!
Looked like volcanic rock!!
Welding inspector not happy!
5 mins of prep is a lifetime of quality!
Thank you for your time and caring to share tips'n'tricks...but thank you the most for being short & to the point. For me, that drives it home & it sticks...
"The 'old'skool Curmudgeon'...😎"
Been there done that. Prep is important for sure.
Really good demo to make a point. Talking to someone today that it is always better to clean off the mill scale.
Best arc shots in the biz! thanx for that. As a teacher, your vids are valuable for large group discussion rather than the small group demos I often do. Kids can see and understand. 👍👍
Awesome video as always! Thanks Jody!
Great advice and will definitely commit this to the memory banks :-)
I use short circuit MIG on 1/8” mild steel angle iron, I fabricate and weld out custom pressure washer frames. It’s cold rolled so most of the time I can’t grind the mill scale due to certain situations (the way the Frames HAVE to be tacked and put together interferes with that). So welding thru the mill scale is something I’m used to everyday. I just turn the heat up to the recommended settings for the next gauge up and use anti spatter spray. Comes out fine. HOWEVER. I agree wholeheartedly about grinding Hot Rolled Mill scale off. Only bad thing is, you go thru SO MANY FLAP DISCS.
Another great video I still have an old Lincoln stick welder but I love watching your mig videos
Those built the world
good stuff mate, i cannot say how much your videos have helped this farmhand welder
just watched your vids from 2014 on MIG great help after a Sunday of practice ,starting to look like it should ..many thanks
My Daddy taught me, from a very early age..(around 8)..Preperation and set-up takes up most of the time of a job, but if you Don't do the prep right, the quality of the outcome will suffer. IF AT ALL POSSIBLE, if you're going to be required to grind pretty, grind the base so your root will have some depth...otherwise, when you grind your weld, you're grinding your strength away! Dad was RIGHT !
Thanks for telling everybody what my Dad instilled in me, at that very early age!
This is an important video for those not familiar with how mill scale adversely impacts weld fusion. I generally use hot rolled steel for my home projects and it never ceases to amaze me just how tenacious mill scale is. I've been using garden variety flap discs to clean off the scale and it laughs at them. Guess I need to step up to a more aggressive disc.
I hope someday to get a welder to complement the small hobby machine shop I'm trying to get together. Even if that never comes to fruition I will still look forward to your next video. You convey knowledge so well I will always be enriched regardless of how things in my shop turn out. Thank you.
I have a everlast stick welder and it’s pretty good. I’ve been happy with the welds. The wire for the power in has its sheathing breaking away at the connector at both the case and plug. One plastic foot on the case cracked but I was able to glue it back together. The issues I have are minor and repairable and for a budget machine it’s great.
@@FishFind3000 thanks for your reply. I've watched a lot of Everlast welder reviews and they always get good reviews.
Yep, BTDT. I started treating my MIG weld prep like TIG welds & things improved dramatically. I also try to use cold rolled & "Pickled & Oiled" steel so I don't have mill scale issues to start with. P&O is definitely worth the $$ & the painting turns out a lot better too. You 'da man Jody! I feel for your back too.
I was watching one of the other welding channels a couple of days ago and was noticing that he was not cleaning the mill scale off before using mig . And the part he was welding was being bolted on the back of a truck .
P000
Everybody is pressed on being a stick welder and being out in the field, so many forget that the shop fabricators are important as they are the ones welding on clips, base plates and many components that are holding up steel structures. Definitely when welding 3/8" steel and up, getting your machine set to the correct setting and making full passes will improve the structure of whatever your company is fabricating and installing. I'm constantly thinking about jobs I've done and if those beam clips aren't on right on a platform, or canopy or floor beam, something could come crashing down. Pay attention all you shop welders and fabricators out there!
This video reminded of the time I witnessed a WPQR for automated welding of 10"x1.75" X70 pipe. The settings were incredibly low, using a regulated short circuit transfer, like what you would use to weld 1/8" sheet metal, but the preparation was impeccable. Machined U-groove bevels, exact preheat and interpass monitoring, and it worked great and gave phenomenal physical properties of the as welded joints. But it was not very forgiving during the pipe installation.
Well dang, first time seeing one of your videos without it being from 2-3 years ago. Guess I'm early
That crummy fixture plate! Gave that thing a hot supper! Really great video man - appreciate it! PS - I have the same/similar table and just cut out/rewelded the front support so I can sit and comfortably tig at it.
I was clenching up watching your knuckles wrenching next to the bench like that
Finger-bang is always NSFW
Haha...same
I missed your videos, seems like it's been a while
I enjoy your videos and are most helpful. Would appreciate if you used metric units in more bits of your videos though. It’s so much better and easier to use.
Thanks for this video! Been waiting for something like this a long time because working on a shipyard often brings you in situations where the mill scale wasnt removed properly and you have to tack weld it anyways to just hold it in position before you can start with the cleaning and preperation to weld it yourself.
Nice little video Jody, shows that even the little things are important. Thanks
Simple, basic info which is absolute gold for beginners like myself. Thanks Jody!
The best channel about welding! Keep going!
Love these videos. The story about cold settings with millscale, hot settings with millscale, cold settings with bright metal is interesting and makes a ton of sense to me, and I'll remember it. I don't know why you threw in a technique change as well (back of puddle vs leading edge of puddle) -- seems to just confuse the issue being discussed.
Good solid tips and demonstration as usual Jody!
I learn something with every video. Thanks Jody. 👍
My guy got mjonir on the table lol. You must be worthy of you got it up there Jody
Gracias señor por sus enseñanzas
First of all thank you for all the work that you do making those videos. They are great source of information. For cleaning mill scale I've found 3M clean&strip discs (or their clones) doing excellent job, especially on thin tubing with not a lot material to grind off. And you will always dig into base material a bit.
Hey jody can you do more mig welding tee joint tips and tricks like this one i liked it very much 👍
My go to channel for welding know how
Great demo Jody, thanks. Good to see you :)
I was told that if forced to use short circuit MIG on mill scale that I just can’t grind off first, just preheat and then crank up the heat about 30% hotter than what you’d normally use for the thickness of the steel. It’s worked for me. But…. I’d never do it for a “critical” weld like on a trailer frame etc….
Your videos have and always will be the best out there! Thanks again!
Man O Man, I thank you for all your training/ experience and quality productions ... I need it !
In an industrial setting you're usually using steel that's been setting in the yard for a while,usually has some rust and always has millscale!They hand you a gun with innershield and gas and expect you to do quality work...that's just how the real world works!
Крутая камера для сварки👍, спасибо за видео👍🤓
This guy's a living legend.💯💪👍
Bottom line - clean , clean , clean always 😎👍👍
Amen brother very good topic. All the trailer and flatbed manufacturers skip preping mil scale. Even tho heavy towing 30k in heavy equipment rides on these gooseneck trailers, flatbed hitches ect. I get they likely weld on hot settings but it still amazes me its probably short circuit mig welding with no care to remove mil scale.
Very nice demo... it explains the cause of some of my problems. Thanks for the video.
That was very convincing and interesting! Thanks for the tips, Jody!
An excellent demo video. Thank you
Thanks for sharing with us Jody. .👍👍👏🏻👏🏻🙏🏻🙏🏻
Great to see you Jody!
Quick, clear, and concise. Love it. 👍
So many reasons to clean mill scale, awesome video 👍
Wow, always knew it made a difference, but that really drives home the point, thanks
Thanks Jody, another great demonstration.
I want to learn more about welding with your channel keep it sharing 👍
Thank you for your videos! I have learned a great deal on Mig Welding that I am teaching myself to master. I am tackling a project of a square tube and wood fence & gates. I have yet to see any instruction on how to attack mill scale on large pieces for painting after it is welded up. I would appreciate your input on this. I’m. just an older dog teaching himself new tricks but I need to find an answer to this challenge as a DIY home owner. I’m using 11 & 14 gauge tube. Lots of old posts on this but nothing I felt comfortable with as of new. Thank you for all your assistance!
Great Video. I just picked up some steel with a whole lot of mill scale for a project. I will use this tip.
Great timing, I just bought a 5' x 20' - 3/8" plate that had been left outside on the ground for over 2 years. The cleanest part of my plate is worse than that rusty spot in the video. I was wondering how much of it I'll need to grind off for welding. Know I got my answer, ALL of it...... Thanks. :)
Nice vid I was looking for something with welding on milscale since a lot of times we dont clean it around here...I would also love to see a video on how to wrap corners in different positions.
Good advise and help for all welders. Thanks
Great tips as always!
Jody's back!!
now I understand....thanks for the lesson
I would always recommend spray transfer above 6mm thick steel
Yes! this is exactly what I needed to learn ! please more videos how not to .
I love this so much thank you, massive help and really helps explain what you can and cannot get away with
Great video. I feel like there’s less spatter when I’m welding (any process) over clean material as well
Great information! Thank you for sharing your knowledge Jody!
Thanks Jody
You have not done any spray arc stuff lately. You should revisit this with spray and cut and etch. 😎
I just made this mistake on almost every weld on a Z-notch on my lowered 1964 chevy truck's frame. Those welds look good on the outside but NOPE. Now my truck is basically totaled. Every weld i did was overlapped/cold rolled over that milscale and now my dream truck is being sold as a salvage parts car! Wish i would've known sooner, as that was a lot of blood and sweat. Its aa huge loss as im already broke and that car was an extension of my personality.
Огромное спасибо, очень ценная информация! Thank you very much, very valuable information!
Mill Scale shall be remove for sure. AWS D1.1/CSA W59. I’ve seen so many big structural companies all around the world never removing the hot roll mill thick mill scale. Now you can see. Thanks man.
Very good demo on mill scale 😃😃😃 Thanks
Absolutely loved the break testing
I have to ask though. Why not include a comparison to a "best effort" type with all of the correct settings on nice clean metal?
You are a good man😁
Thanks for another great tip Jody! 👍
My work builds carts for warehouse rack systems, all our material is always covered in mill scale, and we never clean it. It’s terrible to weld, I hate it.
Spatter galore to
Great advice. Always better to clean that mill scale to weld to bright, clean metal.
Oh, btw, that's not a ford wrench. That's a chevy/dodge/foreign car wrench.
I have one that's similar made by ford with the ford logo on it. From the 30's i think. Don't actually use it for anything though.
very good to know! Thank you...that changed my mind about cleaning before welding 😎👌
Another awesome video Jody thanks you the man 👊🏻
Im legit curious if you have ever used any 3m cubitron II angle grinder products? I work in d1.1 structural steel and that brand is by far my favorite when it comes to both ability to eat away at material and longevity of the disc when it comes to glassing over
Pretty welds aren't necessarily good welds. Thanks for showing us this.
Are good welds necessary pretty?
Thanx for your good channel, learned alot !
Good welds are not always nice to look at but the penetration has to be there.
Muito bom aprendo muito vendo seus videos queria que fosse em português aprenderia bem mais muito bom mesmo
Awesome illustration. Thsnks