e.spark Posted July 7, 2021 Report Share Posted July 7, 2021 Hello! I have been vaping using ss316l wire for a month and whenever I dry burn and rewick the cold ohms starts changing. When I first installed the coil it was around 0.26 ohms and after dry burning it after 10-12 times it's around 0.31 ohms. I usually dry burn at 15-25 watts with 1-2 seconds pulses. Is this something I should be concerned about? Thank you! Link to comment Share on other sites More sharing options...
Wayneo Posted July 7, 2021 Report Share Posted July 7, 2021 That's pretty standard for SS and why it's called 'cold ohms'. Dry burning heated it up, and when the coil cools, the ohms will drop. That property is what allows features like Replay or TC to work. Link to comment Share on other sites More sharing options...
e.spark Posted July 7, 2021 Author Report Share Posted July 7, 2021 (edited) I guess I didn't clear things up properly. I install this coil (the resistance of the wire is 0.26 ohms at room temperature), i vape it for a few days and when they get gunked up, i dry fire the coils to clean them up. After cleaning it up using the method I mentioned earlier, I give the coil 20 minutes to cool off and then when I check the resistance, I see that the ohm has increased ( 0.27 ohms at room temperature). Every time I clean the coils this keeps on happening. Now my coil has a resistance of 0.31 ohms at room temperature. I hope this will clear things up. Now the question is whatever is going on with this coil, is it good or something to be concerned about? Sorry for my bad English though ☹️ Edited July 7, 2021 by e.spark Link to comment Share on other sites More sharing options...
Wayneo Posted July 7, 2021 Report Share Posted July 7, 2021 You might want to run Atomizer Analyzer in escribe to see how much fluctuation there is. ~.003-.004Ω is normal. You can clean your 510 threading on the mod and atty. Also check that the coil leads are still snug. Overall, nothing to be concerned about Link to comment Share on other sites More sharing options...
e.spark Posted July 7, 2021 Author Report Share Posted July 7, 2021 In my case the resistance increased by 0.5 ohms. I cleaned the 510 threading and checked if there's anything loose in my atty. I couldn't find anything wrong with the mod or the atty. I even checked the atty in another DNA mod so yeah I'm confused Link to comment Share on other sites More sharing options...
Wayneo Posted July 7, 2021 Report Share Posted July 7, 2021 Did you check the positive is snug on the atty that touches the mod? How much fluctuation in Atomizer Analyzer? Link to comment Share on other sites More sharing options...
zark Posted July 8, 2021 Report Share Posted July 8, 2021 21 hours ago, e.spark said: После очистки с помощью метода, о котором я упоминал ранее, я даю катушке 20 минут, чтобы она остыла, а затем, когда я проверяю сопротивление, я вижу, что сопротивление увеличилось (0,27 Ом при комнатной температуре). Это происходит каждый раз, когда я очищаю катушки. Теперь моя катушка имеет сопротивление 0,31 Ом при Дружище, я сварщик и часто сталкиваюсь с этим явлением при работе с нержавейкой. Это происходит из-за выгорания поверхности катушки при сухом нагреве без защитного газа. Такое явление стандартно для нержавейки, это простая химия, при нагреве свыше 550 градусов Цельсия на поверхности нержавейки разрушается и испаряется часть соединений хрома и никеля, поверхность покрывается оксидной пленкой, которая имеет очень большое сопротивление, при каждом подобном нагреве диаметр провода постепенно уменьшается, это и приводит к увеличению сопротивления. Вообще, все нормально, постепенное увеличение сопротивление при эксплуатации катушек из нержавейки это стандартное явление, главное не делать сильных сухих ударов, чтобы не вдыхать испарения хрома и никеля Link to comment Share on other sites More sharing options...
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