Travel speed

[Muhammad]

I think in this weld my travel speed is not correct, what do u think ?
(my travel speed was 7 inchs per minute)
How much travel speed should I have in mig welding? (Sorry for silly questions, i am new to welding)

I will glad to know ur comments about my weld in overall.

19.5 volt
wfs 315 ipm
gas C25
flow 18 cfh
Thickness: 3/16 inch (low alloy carbon steel)
Wire 0.030 inch, ER70s-6

 

[gaz1]

your using a lincoln machine ?

it dosnt look right too bulbous if im honest here

weld flow looks ok but its too high on the weld id expect more flow

not too sure on your shielding gas flow though seems a bit high but could be wrong

someone else might point you in the right direction soon though

 

[minimutly]

Surely the only consequence of too much gas is wasted gas - at high amps anyway?

 

[backpurge]

Surely the only consequence of too much gas is wasted gas - at high amps anyway?

If the gas flow is too high you get disturbance in the shield, the gas can start to vortex and draw in air causing porosity, so people think they haven’t enough gas so they turn the gas up which makes the problem worse, next thing is the gas company gets the call saying their gas is faulty.

 

[backpurge]

The weld speed is way too slow, far to much weld metal

 

[Jay1st]

Looks either cold or slow, how's the uderside of the plate ?

 

[Munkul]

you're going to need well over 400 IPM with that size of wire. Try around 420-450. Leave volts etc where they are.

 

[Muhammad]

The weld speed is way too slow, far to much weld metal

I did it, i increased travel speed (to 10.5 ipm) and voltage (to 21 volts)
Its the results:

 

[Muhammad]

Looks either cold or slow, how's the uderside of the plate ?

I think you are right, i tried it again and increased voltage and travel speed:
19.5 volt 》 21 volt
7 ipm 》 10.5 ipm

And its the result:

 

[gaz1]

they look much better than before

 

[Jay1st]

can try lowering the speed

 

[Munkul]

You need to run some joints before you really know what's right. MIG beads on a plate paint a false picture.

Looks set about right, even if there isn't enough amps. Try a fillet weld. You'll need the wire speed up to over 400 IPM for penetration, like I said.

 

[Jay1st]

Dont mix up travel speed and wire speed
Travel speed is the speed at which the torch is moving, wire speed is as it's name implies

 

[Muhammad]

You need to run some joints before you really know what's right. MIG beads on a plate paint a false picture.

Looks set about right, even if there isn't enough amps. Try a fillet weld. You'll need the wire speed up to over 400 IPM for penetration, like I said.

I did what u said and its the result:
I glad to know ur comment about my weld, tnx.

Wire feed speed: about 400 ipm (0.030 inch)
Voltage: 21
Travel speed: 11 ipm
Thickness: 3/16 inch
T joint, position: 2F

 

[Munkul]

Looks good turn the voltage down to 20v and you may well get rid of that heavy bits of spatter.
Move slightly faster, too.