HTP MTS 220 ProPulse -Gas selection

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Just upgraded my MIG from a MillerMatic 175 to a HTP ProPulse 220 MTS and need to get another gas Cylinder. I am debating on a standard 75/25 MIG Mix or getting a 90/10 cylinder. Initial plan is to do sheetmetal on my Land Cruiser project, but I'd also like flexibility for doing pulsed and spray transfer on some thicker stuff  (like bumpers). Ideally, I'll have BOTH cylinders, but budget was mostly blown on the new machine. I think the sheet metal project will come first. What is the recommendation here?75/25 Mig Mix?James AHP 200X TIGHTP ProPulse MTS 220Chinese O/A
Reply:Go with 75/25 mix. Nice thing about 75/25 is you could step up to dual shield wire if you really get into some heavier material.
Reply:I was in the same position last year when I bought my HTP PP220, only had the 75/25 in a 250cf tank. I Love this machine, primarily bought it for Aluminum (so was using my 300cf Argon tanks then), but had a trailer project come along and wanted to get the full benefits of Spray. I traded-in an old 80cf of Nitrogen, plus a small fee, and got a 150cf 90/10. Now I Really like this machine

The proper "spray" gas made a noticeable difference (this was with 1/4" and not applicable to you body panels maybe though) so, keep it in mind for the future, get some 90/10 at some point.Speaking of body panels,, do you have Argon now? Because I recently did my body work with Sil Bronze and this machine was just Great for that too! (you can buy 2lbs of it on an 8" reel from USAWELD)
Reply:

Originally Posted by BaTu

I was in the same position last year when I bought my HTP PP220, only had the 75/25 in a 250cf tank. I Love this machine, primarily bought it for Aluminum (so was using my 300cf Argon tanks then), but had a trailer project come along and wanted to get the full benefits of Spray. I traded-in an old 80cf of Nitrogen, plus a small fee, and got a 150cf 90/10. Now I Really like this machine

The proper "spray" gas made a noticeable difference (this was with 1/4" and not applicable to you body panels maybe though) so, keep it in mind for the future, get some 90/10 at some point.Speaking of body panels,, do you have Argon now? Because I recently did my body work with Sil Bronze and this machine was just Great for that too! (you can buy 2lbs of it on an 8" reel from USAWELD)
Reply:I wouldn't TIG those panels, the HTP will spray / pulse the SiBr wire (it uses Argon for this). This is the way autobody shops do a lot of repairs now. Current procedures mandate that the high strength, thin, newer metals NOT be welded. But, I gotta tell ya,,, it's a Very cool way to do the joint! It's as fast as MIG welding and a lot easier to grind flush.
Reply:

Originally Posted by BaTu

I wouldn't TIG those panels, the HTP will spray / pulse the SiBr wire (it uses Argon for this). This is the way autobody shops do a lot of repairs now. Current procedures mandate that the high strength, thin, newer metals NOT be welded. But, I gotta tell ya,,, it's a Very cool way to do the joint! It's as fast as MIG welding and a lot easier to grind flush.
Reply:Go strictly 100%Argon AND a C25 tank.  Merge them with a western Y-adatper model 111 and you can have both C25 and C10 for spray & pulsed spray on most programs (except stainless).  I can share the spreadsheets with the flowrates with you.

Last edited by Oscar; 5 Hours Ago at 10:46 PM.

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Reply:

Originally Posted by Oscar

Go strictly 100%Argon AND a C25 tank.  Merge them with a western Y-adatper model 111 and you can have both C25 and C10 for spray & pulsed spray on most programs (except stainless).  I can share the spreadsheets with the flowrates with you.


Reply:On that setup, I didn't use the adapters with the HTP flow meters.  That way I kept all of it 9/16-18 size.  The female fittings attached to the flowmeters, are the same exact ones attaching to the Y.  I get them at my LWS.    At the single port facing down in the picture, I used a male-to-male coupler.  Also just FYI, the 111 Y that I used is meant to be used as a splitter, not a "combiner", but it works none the less, regardless of what the flow direction arrows point to.


I use the 3/16" hose barb fittings to keep the hose ID small for less stored gas, and the black braided hose I get from HTP by the foot.  The single ear clamps I get from Toollots, pack of 100 is $10 + ship:  https://www.toolots.com/crimp-steple...mm-100pcs.htmlOn the HTP machines they use a BSP thread at the machine inlet, so I had to re-use the [HTP] nut from the original hose, but I used a 3/16" nipple/barb (like the ones in the pic) that I had to turn down just a smidge on the lathe so it slips in to the BSP nut from HTP.  I have plenty of extras of all this stuff, so if you need any of these parts or if you want one fully built for you, I can have one shipped out Monday morning.  Plug-n-play ready.

Here is the chart for obtaining 92/8 using 100% Ar + C25:

Here is the PDF:C8 using 100% Ar + C25If you want one for C10, I can generate that no problem, but it's kinda splitting hairs at that point.

Now a days, I have a triple-tank setup for MIG with 100% Argon, 100% CO₂, and 100% O₂, using a Frankenmixer™.  I can dial in anything I want.


Last edited by Oscar; 1 Hour Ago at 02:08 AM.

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