Acid etch testing

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I was bored and had some time on my hands, so I did a few welds with what I am capable with at home. All tests were made on 1/4x3x4 inch A36 coupons, cut out of the mid point, polished and acid etched.. I traced the weld depth as they didn't shop on camera very good. I will probly do a "hammer test" later... What does all this prove??? Not a whole lot! Just outa curiousness of myself.first two: .035 er70s-6 20v 195IPM 100% CO2 Attached ImagesLast edited by MISSING LINK; 05-28-2014 at 03:50 PM.TOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:next:.035 er70s-6 26.6v 375IPM 90%argon 10%CO2TOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:6011 ac 125 ampsTOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:6013 ac 135 ampsTOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:7014 ac 135 ampsTOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:7018ac 135ampsTOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:7018dc 135ampsTOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:.035 flux core e71t-gs forgot to write my setting down, sorry. HOT was all I remember. a few pin holes ... ISHTOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:Interesting results.  Looks like 7018 penetrated more than 6011.  What kind of acid did you use? Sent from my SCH-I545 using Tapatalk
Reply:last for kicks and giggles I had some cut/gouge rod laying around. AC 150amps Attached ImagesLast edited by MISSING LINK; 05-28-2014 at 04:21 PM.TOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:some good some not so much... just messing aroundTOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:Was weak mix3% HCI97% methanolIt etches pretty quickTOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:Thanks.  Very interesting comparison.Jerry30+ yrs Army Infantry & Field Artillery, 25 yrs agoMiller 350LX Tig Runner TA 210, spool gunLincoln 250/250 IdealArcESAB PCM 500i PlasmaKazoo 30"  vert BSKazoo 9x16 horiz BSClausing 12x24 lathe20T Air Press
Reply:Wow, thats cool!
Reply:Thanks, the two I was most wanting to compare was the 7018ac vs. 7018dc. Both were run with a standard “DC” style 7018 that has AC current optional…. I have found that not all run the same. One brand WA. Alloy runs great on either current, better on DC naturally, also it has been the smoothest for AC vertical up… but the standard 7018 from Hobart didn’t like AC… Lincolns standard Excal 7018 ran fine on AC flat, horizontal, overhead,,, but not as smooth going vertical, but like butter on DC naturally. All rods penetrated into the parent metal at least .015 which I have always been told is a minimum. I am sure had I ran the 6011 at 135 amps it would have done better, 125 is where it seems to have a nice balance.... I used to have some 1/8 7024 but that is long gone.. Beside ChuckE2009 & Jody have already run a lot of that.... I usually switch to spray or 7014 if I have a need for speed..TOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:This is a common test to do in Great Britain instead of bending coupons like we do in North America.  Great that you posted for everyone to see.  I din't know a single acid wojuld show.... the Procedure Handbook has formulae but they are mixes of more than one acid.
Reply:I think more than one acid would be better. it took 2 apps to get results.
Reply:Hey all, forgot abouts this thread. But did my hammer test. Not trying to stir the pot but this is what I found out. Tacked each piece to a inclined beam on the floor. Held my sledge 2ft back and swung away. test was done few months back when the pieces were neg 20 in the garage... each was cut 2" long.#1 co2 short arc. 5 swings#2 C10 spray arc 6 swings#3 6011 AC  4 swings#4 6013 AC 3 swings#5 7014 AC 5 swings#6 7018 AC 6 swings oddly enough#7 7018 DC 5 swings.... hmmmmm#8 flux core 2 swings#9 cut rod 2 swingsagain was just my own putzing and curiousness at work hereTOOLS AND TOYSSMAW Mid States Inc. "MISSING LINK" 10-150 AMP Buzzer circa 1945ishSMAW Magic Wand 40-60 AMP Suitcase Buzzer circa 1939ishGMAW Hobart 210 IronmanOxy-Propane TorchMany other old and cold goodies"Rusty but Trusty"
Reply:Originally Posted by MISSING LINKWas weak mix3% HCI97% methanolIt etches pretty quick
Reply:hydrocloric acid ya.sorry for bad spelling
Reply:Originally Posted by MISSING LINKHey all, forgot abouts this thread. But did my hammer test. Not trying to stir the pot but this is what I found out. Tacked each piece to a inclined beam on the floor. Held my sledge 2ft back and swung away. test was done few months back when the pieces were neg 20 in the garage... each was cut 2" long.#1 co2 short arc. 5 swings#2 C10 spray arc 6 swings#3 6011 AC  4 swings#4 6013 AC 3 swings#5 7014 AC 5 swings#6 7018 AC 6 swings oddly enough#7 7018 DC 5 swings.... hmmmmm#8 flux core 2 swings#9 cut rod 2 swingsagain was just my own putzing and curiousness at work here
Reply:OUCH! I have smashed too many fingers... figured i would play it safe.....Ha sorry to let you down on the AC welds!!
Reply:Originally Posted by MISSING LINKOUCH! I have smashed too many fingers... figured i would play it safe.....Ha sorry to let you down on the AC welds!!