I think it has to do with the effect of the transformers windings on the electron flow. I have used transformers to clean up power spikes by using a transformer that was straight across. Not a step down or step up.

Definitely stress cracks. Seen lots of stuff on steel like that. Metal fatigue from twisting stresses and flex that add up over time. The real problem is only visible at a microscope level, there will be micro cracks under the surface that you can’t see. You can test for that with a manga flux setup...

Yeah, I want to just use this machine. I really just was hoping someone could explain this panel and the different adjustments - like what these terms mean and how they interact. There can often times be a large gap in terminology/definition. IE some companies especially in the realm of ac tig. Use...

Amen tweek I know your pain. There are so many places I plan work but I am very restricted to what pictures I take just to plan a job. Also I see many times over how someone’s budget draws a hard no in a project feature that everyone agrees needs to happen. It is the reality of industry that is stri...

I will say I’ve done lots of brazing and lots of welding. But I guess I never thought about combining spot welds and then brazing a lap joint. That is a great idea. One I plan on trying in the future.

Brazing is more like glue. It only bonds to the surface. In a but joint there’s only a small surface for the braze to bond to. Then there’s the matter of the braze material that fills the space between the two parent metals is usually more brittle so it doesn’t handle flexing stress very well.

This one will require some pictures. Generally welding on a bearing housing will cause a failure. If it’s cast definitely no. If the bearing is in it, no. They do make bearing houses that are meant to be welded, however even if it’s designed to be welded it is possible to warp a housing by welding o...

Almost looks like AC Mig.

I’ve used furniture paste wax.

https://www.ebay.com/itm/Esab-Tig-Welde ... 4665917334

https://www.amazon.com/SSC-Controls-Wel ... B07XVNXHCG

1/8 steel plate, 120 to 130 A, 3/32 or 1/8 tungsten, 3/32 filler (to start 1/8 in some positions), cup start with a 7 ( good all around size for practice), gas 15 to 25 cfm( depends on joint and weld angels) and accuracy of your flow meter. If your machine has high frequency then use it to start lea...

If it is a butt weld end to end then it’s probably best to bevel the walls to ensure full penetration. Multiple benefits, if you grind down the weld a bit for a finished look then your left with more weld. Also doors tend to be high stress. Lots of weight working with gravity overtime and the slammi...

The welds look pretty good, only thing I see is the divots at the ends. That’s gonna be a high stress application being a hinge, so a likely weak spot for a crack to start.

By the time you spend the money to get a good generator for doing something like this, your at the same money level of buying a gas powered welder in the 300 amp range.

Yes especially on SS work. It reflects much more light back at you.

Amen to that. I have seen a small pocket note pad become a CYA legal document that literally was the difference of millions of dollars. US dollars for inflation reference.

Refrigeration compressors have cranks that typically can be reground 2 times and then use oversized bearings.

There’s always the option of wearing glasses under the hood.

Undersized tungsten can definitely be an issue. When the tungsten degrades it can send tungsten chunks into the weld pool. These will, or can cause popping.

Depends on the SS you work on. If your SS wire is stored in a container with steel wire it will contaminate it to the point your SS welds will weep rust marks. If that’s not an issue for your SS project then your all good.

cj737 wrote: ↑Mon Aug 09, 2021 3:48 pm That’ll give you some idea of the process and work involved.

From the look on your fitters face I would say you might have been pushing him a bit hard.
Looks nice!

I would say that’s general pretty much the way it works in the US as well.

I have a Lincon 210mp. As far as mine goes, you can only weld aluminum with a spool gun. And mine doesn’t have pulse that I’m aware of.

It’s possible it’s just silica from filler wire composition.

Nice!