etesrafrmnc
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I've been browsing the forum for a while as a guest, Always get inspiration seeing your work!
Estes - employee time tracking
Estes - employee time tracking
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Tractor backhoe - homemade
- Thread starter BFreaky
- Start date
- Views: 1162114
SylvainG
Platinum Member
When I see new posts here, I'm hoping it's a progress post but often disappointed by just posts like these. Oops, here I go too lol.
Kyle_in_Tex
Super Star Member
Progess! I can tell your welding talent is really good right now.
It's like hand writing, the more you do it the better it looks. It's also important to buy a good welder. Now I own a Synergy Mig welder with 380 Amps max current and water cooled torch, but next "wish" is a dual pulse welder. That's a long term plan...
Kyle_in_Tex
Super Star Member
Your handwriting is looking good.
Renze
Super Member
At work we run a bunch of Fronius pulse welders. Once it wasnt new anymore, the pulse possibility is hardly ever used. And when its used, its for the root pass on 40mm thick steel. So the 8000 euro extra price really goes to waste in the work that you do.
Renze
Super Member
Pulse welding gives better penetration in a sharp beveled seam because it allows you to put more heat into the same amount of welding wire, but the guys prefer a steady arc for finish welds, which gives smoother appearance. These Fronius do have a more stable arc when pulse welding isnt used though, but that has to do with the overall quality of the AC/DC converter and leveller in these 16.000 euro welders, not with their pulse weld ability...
Renze
Super Member
Well the salesman told us too so we bought four of them. They weld great, but the pulse isnt used often (you can hear a sonic whine in the office when they use the pulse option) once everybody tried this new gadget, they now use it only to penetrate the root pass of a beveled V weld. For filling the other layers it isnt used because it has no merits then, but gives a slightly rougher finish. In hindsight we would probably not have paid for the pulse option...
Kyle_in_Tex
Super Star Member
Renze just saved a lot of people a lot of money. All the wives are happy!!!
Nah, we'll just buy a bigger Synergy welder, wives can't win, equipment is essential
Anyway, I turned and centered and welded main swing mechanism....now for the hardest and believe me the most complicated part of the machine...swing cylinders. Anyone who is familliar with this issue knows that this combined movement of those two swing cylinders does not forgive any mistakes. There is a 5 mm window in geometry in which this works...
Renze
Super Member
I said the pulse mig isnt worth the money unless youre doing root passes on one inch or thicker. Not that the expensive welders didnt give better, more stable arc than our older ones when filling large bevels without pulsing.
Renze
Super Member
Ofcourse. There is a ton of planning and drawing behid the geometric solution. I've figured quite fast that at half point of the swing cylinders get in a impossible position where they should both go out to achieve this arc unless you manage to get that lever ratio under 5 mm.Yup.. isnt it satisfying when you get it just right ?
Renze
Super Member
Its not uncommon for a swing setup to have one of the two cylinders at, or slightly over its dead point so it actually works against. But because it works against at its dead end, while the other works with full arm, its ok.
180 degree swing sets for a swivel loader are worst. For a backhoe where you can use trunnion mount its much better, and for articulated loaders its easy because they only have to do 80 to 90 degrees....
Testing the oil tank for leakage; passed
So I welded top cover and painted it
After that I made kingpost braking cylinders, 4 of them, one in each corner.
Turning them on the lathe after welding. It was almost unnecessary
So I welded top cover and painted it
After that I made kingpost braking cylinders, 4 of them, one in each corner.
Turning them on the lathe after welding. It was almost unnecessary
Sooo...after alot of other projects I decided to finally finish this one. Welding of the swing cylinders and preparing upper holding plate... This has to be welded dissasembled not to burn those seals in the cylinders...
