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 Post subject: looking for criticism - welding
PostPosted: Sun Jan 13, 2013 7:14 pm 
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Hey all. Finally got around to playing with my welder I bought last February. Today I practiced laying down beeds.

Used a Lincoln ac225 arc welder
On quarter inch steel
With 7014 rod

If you could please let me know which beed looks best and any criticism to follow as I am not sure what exactly I am looking for. Am following new lessons in arc welding as much as I can but need outside input.

Haven't cut the cross sections of the welds yet. Pictures might not be good enough to tell anything as my wife has the camera at a baby shower right now. I had to use the tablet. So there may be need to take new pics when she gets home

Image
Image

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 Post subject: Re: looking for criticism - welding
PostPosted: Sun Jan 13, 2013 8:01 pm 
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My advice? Practice practice practice!!

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 Post subject: Re: looking for criticism - welding
PostPosted: Sun Jan 13, 2013 9:19 pm 
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The best way to tell is to saw cut the work piece perpendicular to the weld and see what kind of penetration you're getting

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 Post subject: Re: looking for criticism - welding
PostPosted: Sun Jan 13, 2013 9:32 pm 
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Per my original post
Quote:
Haven't cut the cross sections of the welds yet


And yea GI, I plan to practice practice practice, but I need to know what to improve on between sessions of practice.

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 Post subject: Re: looking for criticism - welding
PostPosted: Mon Jan 14, 2013 2:04 am 
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I'll be going through a weld inspection course for a huge gas company not this week but next. Maybe I'll be able to shed some insight from that.

Also, if you can weld any strips together and then do some root bends and nick breaks, that will also shed some light on how the welds are.

On a side note, I really need to get me a welder!

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 Post subject: Re: looking for criticism - welding
PostPosted: Mon Jan 14, 2013 11:42 am 
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Midnyte wrote:
I'll be going through a weld inspection course for a huge gas company not this week but next. Maybe I'll be able to shed some insight from that.


I am a weld inspector. It actually helped my welding quite a bit.

First thing I would do, is instead of laying beds across a flat piece of steel, start sticking stuff together. Bevel two pieces of 1/4" butt them up end to end, and weld. Welding a bevel is a lot different than welding across a random piece of plate. From there, it is all technique. 7014 is pretty much a drag rod. Then from there, you just need to figure out what technique works for you. Personally, I use 7018 rods, with a straight up drag technique. I don't do eeeee or CCCCCC with 7018. My hand motion looks like this -------. Just a straight line. If you haven't already, do a little research and make sure you have your amps set right for the thickness of plate you are welding. You should be able to find several charts online that tell you what you should be set at.

Is this an AC only welding machine? or AC/DC-?

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1995 F150 - 300/zf5/np203/np205 - crawler
1995 F250 - 7.3L/zf5 - broke
1994 Kawasaki Vulcan - the bike
1985 F250 - 460/np435/bw1345 - parts truck
1977 Chevy K20 - 350/sm465/np205 - Current DD / tow pig
1969 F100 - 390/3spd - future mud truck
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 Post subject: Re: looking for criticism - welding
PostPosted: Mon Jan 14, 2013 7:54 pm 
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GIJoe4500 wrote:
First thing I would do, is instead of laying beds across a flat piece of steel, start sticking stuff together. Bevel two pieces of 1/4" butt them up end to end, and weld. Welding a bevel is a lot different than welding across a random piece of plate. From there, it is all technique. 7014 is pretty much a drag rod. Then from there, you just need to figure out what technique works for you. Personally, I use 7018 rods, with a straight up drag technique. I don't do eeeee or CCCCCC with 7018. My hand motion looks like this -------. Just a straight line. If you haven't already, do a little research and make sure you have your amps set right for the thickness of plate you are welding. You should be able to find several charts online that tell you what you should be set at.

Is this an AC only welding machine? or AC/DC-?


In reverse...unfortunately AC only.

Thanks for mentioning the chart idea. Is proper penetration supposed to be about halfway through the plate (in my instance, 1/8" penetration on the 1/4" plate)? I doubt I was getting that. I was wondering if I should have cranked it up one more notch (my welder in 15A increments, stopped at 135A on those in the picture).

I attempted hand motion. I've heard a lot of people liking 7018.

Yea welding two pieces together is sort of the next exercise in the book, actually it's kind of a compound exercise, features a lap over plates, bevel two together, and a 90*, I just was starting at the very basic, since it's been 8 years since I last attempted this, so I set the stakes real low on Sunday. I'm guessing this will be my new Sunday exercise. I plan on having more pics to share.

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 Post subject: Re: looking for criticism - welding
PostPosted: Mon Jan 14, 2013 8:49 pm 
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You should be able to butt weld 1/4" with a single pass. You can't really just penetration when you are just laying a bead down on the face of the place. When you bevel the plate, and buttweld it, it should only take 1 pass for full penetration, which is 1/4" deep. all the way through. You should be able to flip it over, and see the root of the weld.

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1996 F150 - 300/M5OD-r2/bw1356 - Future DD
1995 F150 - 300/zf5/np203/np205 - crawler
1995 F250 - 7.3L/zf5 - broke
1994 Kawasaki Vulcan - the bike
1985 F250 - 460/np435/bw1345 - parts truck
1977 Chevy K20 - 350/sm465/np205 - Current DD / tow pig
1969 F100 - 390/3spd - future mud truck
2003ish 18ft carhauler trailer


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 Post subject: Re: looking for criticism - welding
PostPosted: Mon Jan 14, 2013 9:59 pm 
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that's great GI, the more descriptions the better. Just trying to figure out what exactly to look for. I will probably move to the butt-weld next weekend.

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