Burnback time

admin

Hello, i have recently bought a ESAB 340C mig welder. I was reading the user manual and it says the welder has a burn back timer function. Is this some sort of spot weld function? or is it something completely different?
Reply:It keeps the weld power applied - usually for an adjustable period of time - after the wire feed stops to 'burn back' the wire and prevent it from sticking in the puddle after letting off the gun trigger.  It can be a stand alone feature but is typically used in conjunction with and part of a spot weld feature.BTW - Welcome to the forum. MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110Save Second Base!
Reply:Are right, thanks duane. I havnt had a chance to have a play with it yet since the 3 phase power supply hasnt been sorted out. Once its sorted out al be posting pictures of some up & coming projects. Thanks for your help duane
Reply:Steven F.   The burnback feature is to produce a prefered wire projection length from the contacter tip for weld initiation.  When terminating a weld you let go of the trigger and hold the gun motionless.  The arc will continue for the duration you have set, resulting in a precise wire projection.  This is an advanced feature; quit possibly you may also have a run-in speed feature.  Think of run-in speed as a granny-gear.  It a varible speed setting slower than welding feed rate that prevents the wire from bucking from arc failure.  The machine senses the arc initiation and automaticly kicks the wire feed to welding speed rate.    Opus
Reply:Thanks opus, al have to try the other features out once a get the 3 phase installed.