Re: Amps showing up on display while welding
Posted: Thu Jul 27, 2017 10:25 pm
Those beads on the right side of the triangle are looking pretty decent.
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PeteM wrote:Those beads on the right side of the triangle are looking pretty decent.
PeteM wrote:In my opinion, penetration and its importance is vastly overstated in welding, especially at the amateur level. The mixture ratio for filler metal to base is ideally a 70/30 mix. Therefore on a 1/8 inch weld, the penetration and mixture only needs to be approximately 1/3 the thickness of the bead size, or 1/24 of an inch of actual penetration into the base metal.olek wrote: "I think " means "I have noticed that, but I am not so sure"
Best way to check that is a cut/polish/etch analysis, and for actual soundness of the weld- beat it till it breaks.
Fusion (or lack thereof) and the re-crystallization of the metal is the real key to a good weld.
Something to think about- Take a scribe and scratch a line down a piece of metal. Now ask yourself what amount of metal is holding one side of that scratch to the other?
Yes. The actual composition and structure of the weld is more important than penetration. The term "penetration" and what is seen in a cross section of a weld is actually just a function of the heat, but the nugget, its composition, and the structure of the mixture of the base metal and filler is what actually holds pieces together.olek wrote:PeteM wrote:In my opinion, penetration and its importance is vastly overstated in welding, especially at the amateur level. The mixture ratio for filler metal to base is ideally a 70/30 mix. Therefore on a 1/8 inch weld, the penetration and mixture only needs to be approximately 1/3 the thickness of the bead size, or 1/24 of an inch of actual penetration into the base metal.olek wrote: "I think " means "I have noticed that, but I am not so sure"
Best way to check that is a cut/polish/etch analysis, and for actual soundness of the weld- beat it till it breaks.
Fusion (or lack thereof) and the re-crystallization of the metal is the real key to a good weld.
Something to think about- Take a scribe and scratch a line down a piece of metal. Now ask yourself what amount of metal is holding one side of that scratch to the other?
Do you mean that the mix quality (amount percentage and heat,) could be more important than pure penetration?
Depending of the size of the electrode (here I mostly have 3/32 7018 left so no much choice) I may decide how large my motion will be, as because ther is no direct heating in the corner, the sides should be near of it enough (?)PeteM wrote:Turn your hand back and forth while holding the stinger, don't wave your wrist like a windshield wiper.
Lift your whole wrist/arm up as you move through the weld to keep your stick angle good and prevent reaching with the electrode. That will help avoid long arcing and porosity.
And yeah, those gold lenses at #10 din will be like a whole different ball game for seeing what is happening. Will likely be a significant improvement.
Thank you , is not 3G in a V between 2 plates, with a root and a back plate ?DFrick93 wrote:Boy, i would think that the weld with E7018 would pass 3G,I have welded for years and a cwi,Heat is very important,AMPs So good advice,Any helpi can give Reach out!!!
PeteM wrote:Those types of movements are too complicated to develop any type of consistency.
Think Chopsticks rather than Rimski-Korsakov.
You have to do this:
https://www.youtube.com/watch?v=M4MMUpjcqkQ
Before you do this:
https://www.youtube.com/watch?v=8alxBofd_eQ
You gotta play chopsticks before you get to Flight of The Bumblebee.