how hot would you weld it.

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today was the fist day we welded since school last year. love being back and welding, gaining knowledge, and learning new things everyday. anyway, we started off where we left last year. i started with square grove butt joints. 1/4 in. steel 1/8 in. gap between. i ran about 185 wfs and 18.6 volts on a lincoln power mig. on a 440 volt outlet (not sure if thats relavent). penetration was alright on back (sticking out about 1/16-1/8 on backside). does this seem hot enough to you guys? Gas was 75/25 set at about 25 (not sure units, gonna check tomorrow so i know)also, for first practice weld, i did a tee joint, 1/4 in. steel. about 175 wfs and 17.6 volts. when i did the weave ( j techinique) it seem to be little to no cold lap. but when i ran a stringer, there was major cold lap, im aware that operator error can cause this, but do you think it was ran hot enough?
Reply:What size wire?"The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt
Reply:wire is .035.
Reply:I'd run it hotter, like 19-20 volts, for 1/4" and 0.035" wire, roughly 0.4 volts per millimeter thickness added to 17.4V seems an easy ballpark figure, for me (imho and all that) - this was obtained from a least squares "fit" out of book data by me, btw.Last edited by wirehead; 09-14-2011 at 09:57 PM.XMT304 (school)SP125+ (home)HF 4x6 BandsawGood judgement comes from experience and much of that comes from bad judgement.
Reply:heat depends on positions and how much heat you can carry.
Reply:also see if the machine you are using gives live voltage values,  your actual welding voltage can drop a few volts from the shown preset.    if so have someone watch it when u weld,  that would explain your issues too.Tiger Sales:  AHP Distributor    www.tigersalesco.comAHP200x; AHP 160ST; MM350P,  Spoolmatic 30A; Everlast PowerTig 185; Thermal Dynamics 60i plasma.  For Sale:  Cobra Mig 250 w/ Push-pull gun.  Lincoln Wirematic 250
Reply:Originally Posted by cowpokeheat depends on positions and how much heat you can carry.
Reply:can anybody tell me why this thing stuck "solderer" under my name? i'm new to this online crap lol.
Reply:Originally Posted by soutthpawalso see if the machine you are using gives live voltage values,  your actual welding voltage can drop a few volts from the shown preset.    if so have someone watch it when u weld,  that would explain your issues too.
Reply:i should've said how much metal you can handle with the temps you are using (the more you burn, the more you learn). i've been welding for over 25 years and i still learn something everyday. metal is a strange element. hang in there bro.
Reply:im trying to learn as much as i can about this profession before i get to the "real world". i may bump heads with some of the guys on here, but i mean no disrespect and appreciate all the knowledge.if DSW reads this, i would like to directly apologize to him refering to the grammar thread (some of you know what i mean) . soo......im sorry.
Reply:What does your instructor think? You did ask him (or her) didn't you? If not, why are you bothering taking the class? Isn't that what they're there for? You are going to get every answer imaginable from an online welding forum and that is only going to complicate the process.Your instructor most likely knows that environment and its particular variables a lot better than anyone you're going to find here. Might want to consider that.Another thing, if you're allowed to (and I can't imagine why not) you should do a little experimenting with your settings and note what the results are. I mean literally take notes, in a notebook (I know, crazy huh?) and you can look back on it down the road when you pick up a MIG torch for the first time in a couple of months and see what was working for you last time.For what its worth from my LIMITED experience, I like to start 1/4" flat at 18V 180IPM on the Miller machines at the school I'm in. Not saying that's always the best setting but its a baseline starting point that I know what to expect.Have fun!Eric
Reply:Originally Posted by cowpokecan anybody tell me why this thing stuck "solderer" under my name? i'm new to this online crap lol.
Reply:hey hands im looking for some some turnarounds for some fast money. sorta in a bind if someone can and will help out please?
Reply:well. the instructor wants weave beads. on an earlier thread, i asked about weaves in industry and most said stringers. so since i got cold lap on stringers, i asked if people would run it hotter. i could ask the instructor, but he also has 26 other studnts to help. could have asked the assistant instuctor, but didnt. idk, thought id give us something to talk about ( on by 18th bday by the way  ) isnt it better to have many views on a process (as long as they work) instead of having one way to do it? and we switch between different machines, so they all vairy, i could take notes on all the machines at different settings, but that would leave me no time to get the mig book done.
Reply:Miller and Swede,Looks to me like you are about 100 IPM to slow.  I run 18v 280 IPM with .035" wire and sometimes I'll bump it up to 19v 320 IPM.  I run 1/4" on either setting depending on position, joint design, bead size, etc.My name's not Jim....
Reply:ill give this setting a shot. is it spray transfer or short circuit
Reply:Originally Posted by jpmillerill give this setting a shot. is it spray transfer or short circuit
Reply:When you're running a machine that actually has wire speed in real IPM it works out well for quick calcs of your amperage. In general a .035 E70S-6 runs about 1 amp per 1.6 ipm, so if you were running at 175 ipm you were running around 100-110 amps at whatever voltage you had at the time."The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt
Reply:Hey Sandy, Where you at in Shasta County?  I am in Redding.Back to the original poster.  My understanding is that WFS and IPM on some machines are not the same thing.  I run my machine in the 19.5 volt range and about 270 IPM, but my readout states 185 WFS.  I always check my IPM manually:Hold your MIG gun and clip the wire flush with the contact tip.  take your stop watch (my cell phone has this feature) and activate it and the mig gun at the same time and hold it for exactly six seconds.  Measure the amount of wire sticking out from the contact tip and multiply by 10.  This is your IPM and you would be surprised that it does not equal what the readout says.  Two identical machines will feed wire at different rates on the same setting.  Every machine is different and should be treated as such.I would say that 17.4 volts is too low for .035.Jay DavisAWS-CWIC-60 Specialty Welding ContractorLoving husband, and father of two boys (
Reply:Originally Posted by jbyrdHey Sandy, Where you at in Shasta County?  I am in Redding.
Reply:Originally Posted by BoostinjdmMiller and Swede,Looks to me like you are about 100 IPM to slow.  I run 18v 280 IPM with .035" wire and sometimes I'll bump it up to 19v 320 IPM.  I run 1/4" on either setting depending on position, joint design, bead size, etc.
Reply:320-340 and 19-21v depending on position, my preference.
Reply:Originally Posted by jpmiller...another question, as wire stickout increases, does voltage increase or is that amps ( or does it decrease )
Reply:jpmiller on a constant voltage machine, the voltage remains constant so an increase in resistance equates to a drop in current to maintain that relationship.on a constant current machine, the current remains constant, so an increase in resistance equates to a increase in voltage to maintain that relationship.That powermig is a constant voltage machine.For more detailed information on answering your question as to what happens when stickout increases, try going here:http://www.esabna.com/EUWeb/MIG_handbook/592mig7_1.htmfor a detailed information on how your power source operates try going here:http://www.esabna.com/EUWeb/MIG_handbook/592mig3_1.htmLast edited by Poptm; 09-28-2012 at 08:48 PM.