Chain hooks on Kubota LA463 FEL
- Thread starter BuckyBear
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George2615
Super Member
Highbeam
Super Member
Whenever I get really serious and do a continuous bead of weld like that I get some fierce shrinkage. I've bent some big metal with the shrinking welds. Is there anything special you folks do to prevent this? I use an arc welder so maybe bigger puddles are to blame.
Pks
Platinum Member
- Joined
- Apr 6, 2000
- Messages
- 773
- Location
- Saline, Michigan
- Tractor
- Kubota L3700SU, Cub Cadet 1430, Hustler Super-Z 66in, Vermeer 1250
Instead of making the weld in one continuous pass (like closing a zippere on your coat), stitch it together. Put down 2 inches of weld on the left end; then 2 inches on the right end; then 2 inches in the middle; then find an area that is reatively cool and put down another two inches there. Keep doing this until you have enough weld for the purpose you need. It's ok to take a break if everywhere the seam is way too hot to touch. Let things cool down. Then start again.
George2615
Super Member
Highbeam,
I didn't do a continuous weld. I ran a bead about 5-6" long then skipped a foot and ran another 5-6" bead. I did this all the way across. Then went back to the first weld and ran another 5-6". eventually they all connected.
I also welded on 6 d-rings to the trailer I bought about 6 mos. ago. Just got around to doing it. Till now my tie downs have been through the stake pockets.
I didn't do a continuous weld. I ran a bead about 5-6" long then skipped a foot and ran another 5-6" bead. I did this all the way across. Then went back to the first weld and ran another 5-6". eventually they all connected.
I also welded on 6 d-rings to the trailer I bought about 6 mos. ago. Just got around to doing it. Till now my tie downs have been through the stake pockets.
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srs
Veteran Member
</font><font color="blue" class="small">( I also welded on 6 d-rings to the trailer )</font>
George2615, did you use a stick welder or wire feed welder on the d-rings? Welds look great to me!!! /forums/images/graemlins/cool.gif Why I ask is when I weld using my wire feed welder (with gas)I seem to get "little craters" in my welds and was wondering what I'm doing wrong. Too fast, too slow, not enough heat, too much heat, etc. /forums/images/graemlins/confused.gif Sometimes the welds look fabulous and other times they look like crap!!! Thanks in advance.
George2615, did you use a stick welder or wire feed welder on the d-rings? Welds look great to me!!! /forums/images/graemlins/cool.gif Why I ask is when I weld using my wire feed welder (with gas)I seem to get "little craters" in my welds and was wondering what I'm doing wrong. Too fast, too slow, not enough heat, too much heat, etc. /forums/images/graemlins/confused.gif Sometimes the welds look fabulous and other times they look like crap!!! Thanks in advance.
Freds
Veteran Member
Porosity using a mig welder and gas is usually caused by losing the gas (having it blow away if it's windy). Try turning up the pressure on the valve or getting the tip and nozzle closer to your weld. Check all your hose connections, too.
It can also be caused if you are welding over paint and the paint is burning. This can be solved by welding slower so the paint burns off before the weld gets there... or grinding the paint off, of course.
You can also help prevent warpage by welding in two different directions... two inches left to right, then two inches right to left back into the existing weld, or 1/2" welds if you are tig welding something. Like already mentioned, don't heat the whole thing up at once if you have a long pass to make.
It can also be caused if you are welding over paint and the paint is burning. This can be solved by welding slower so the paint burns off before the weld gets there... or grinding the paint off, of course.
You can also help prevent warpage by welding in two different directions... two inches left to right, then two inches right to left back into the existing weld, or 1/2" welds if you are tig welding something. Like already mentioned, don't heat the whole thing up at once if you have a long pass to make.
Highbeam
Super Member
So to prevent the shrinkage all I need to do is let it cool between stitches? Air cool would take forever, I don't want to quench it. I'll try welding from each side in 2 inch stitches until it closes on my next project. When you say cool do you mean cool to the point of being able to touch it or?
On the D-rings, is there a benefit to welding them on top of the deck channel vs. on the side like shown. I've seen them both ways. I can arc weld them on much easier to the top of the frame channel.
Great welding.
Porosity is caused by contamination whether it be oxygen in the air where the shielding gas was insufficient or by welding through junk like paint. The weld isn't as strong with porosity but I've never had a porous weld be so weak that it broke. Just make a bigger (uglier) weld.
On the D-rings, is there a benefit to welding them on top of the deck channel vs. on the side like shown. I've seen them both ways. I can arc weld them on much easier to the top of the frame channel.
Great welding.
Porosity is caused by contamination whether it be oxygen in the air where the shielding gas was insufficient or by welding through junk like paint. The weld isn't as strong with porosity but I've never had a porous weld be so weak that it broke. Just make a bigger (uglier) weld.
srs
Veteran Member
</font><font color="blue" class="small">( Porosity using a mig welder and gas is usually caused by losing the gas (having it blow away if it's windy). Try turning up the pressure on the valve or getting the tip and nozzle closer to your weld. Check all your hose connections, too.
It can also be caused if you are welding over paint and the paint is burning. )</font>
I guess what you are saying is close the garage door when I weld. /forums/images/graemlins/tongue.gif I'll also try to turn up the pressure and/or put the tip closer to the weld. Hose connections are ok and I make sure there is no paint or dirt, grease, etc. near the weld. Thank you for your welding advise.
It can also be caused if you are welding over paint and the paint is burning. )</font>
I guess what you are saying is close the garage door when I weld. /forums/images/graemlins/tongue.gif I'll also try to turn up the pressure and/or put the tip closer to the weld. Hose connections are ok and I make sure there is no paint or dirt, grease, etc. near the weld. Thank you for your welding advise.
Highbeam
Super Member
I don't think I would close the door. You'll want some ventilation just not a windstorm. Otherwise the air gets awful nasty for you to breathe.
