Fixed Lug Frustration

[rehajm]

The case is steel, yes…

[HectorLooi]

1 hour ago, agg221 said:

It looks like the case and the bar are stainless? If so I would would use TIG with 316 filler.

The bar is probably just 1.2mm diameter. What current setting would you use on your TIG?

[agg221]

3 minutes ago, HectorLooi said:

The bar is probably just 1.2mm diameter. What current setting would you use on your TIG?

The setting is at 30A but I am using pedal control so I would think around 10A. I am using a 0.8mm ceriated electrode. I have pulsed mode available but to be honest I don't find it useful at this sort of thickness. I use a zero downslope. I tend to strike the arc on the filler, raise the current enough to melt a bead and then hold it to wet out both sides, then power off. It doesn't give the neatest of edges compared with a longer downslope but it doesn't undercut either. I tend to aim for an oversized bead and file back, rather than keep close to size and risk being too low.

Alec

[praezis]

6 hours ago, rehajm said:

Thank you Frank…general purpose okay? 40 precent?

Don‘t know 40 % of what, but no electronic solder, but such that Alec mentioned.

[HectorLooi]

1 hour ago, agg221 said:

The setting is at 30A but I am using pedal control so I would think around 10A. I am using a 0.8mm ceriated electrode. I have pulsed mode available but to be honest I don't find it useful at this sort of thickness. I use a zero downslope. I tend to strike the arc on the filler, raise the current enough to melt a bead and then hold it to wet out both sides, then power off. It doesn't give the neatest of edges compared with a longer downslope but it doesn't undercut either. I tend to aim for an oversized bead and file back, rather than keep close to size and risk being too low.

Alec

Normally for such small diameters, I'd use my dental pulse arc welder. For pieces bigger than my dental welder can handle, I use an add-on pulse timer with my 100A unit. 

But after my retirement, my welding machines are gathering dust in my front yard. I should really do something about them.

[rehajm]

2 hours ago, praezis said:

Don‘t know 40 % of what, but no electronic solder, but such that Alec mentioned.

Silver solders vary in the percentage compositions, from 80 percent silver content ‘very hard’ to easy flow, about 35 percent…

[praezis]

8 hours ago, rehajm said:

Silver solders vary in the percentage compositions, from 80 percent silver content ‘very hard’ to easy flow, about 35 percent…

Ah, ok. That doesn‘t really matter, easy will be strong enough. But also harder flowing will be no problem, the bar is thin and solder point far from the lugs, little danger of melting the lug/bar joint.