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Showerthought: a burnout on 3/8 plate at the Tulsa fair made me rethink my whole pierce delay
Honestly I used to run my pierce delay as short as the machine would allow, because everyone online says faster is better. Then I watched a demo guy at the Tulsa farm show cut 3/8 plate with a delay about 0.3 seconds longer than mine, and the holes came out clean with almost no dross. I tried his number at home on some scrap and got the same result, plus my nozzle life went from about 4 hours of cutting to closer to 7. My old way was blowing through consumables and I blamed the metal. Tbh the slow pierce feels wrong when you are watching it, but the parts do not lie. Anyone else run a longer delay on thick plate, or is it just how this guy had his table dialed in?
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jade8859d ago
Man, I have to push back on this one. A longer pierce delay on 3/8 is not some magic trick, it is just basic physics, thick metal needs more time for the arc to punch through before the machine starts moving (if you go too fast you get spatter and a messed up hole every time). But going way longer than needed does not give you clean holes and double nozzle life, that is a stretch. What probably happened is his table had the pierce height set right and yours was off, because height matters way more than the delay on plate that thick. You said it yourself, the slow pierce feels wrong, and that is usually your gut telling you something. I would check your height and your air before you credit a 0.3 second change for seven hours of nozzle life (just saying, that math does not add up in my head).
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