Domnu Posted February 9, 2022 Share Posted February 9, 2022 I have experimentet a little with putting an expansion chamber with a hole-plate in front of a venturi burner. the chamber is 2" in diameter and the hole plates are simply reused stainless meat grinder plates. I have tried different plates with different hole sizes and so far most worked pretty good. You get distinct small flames from each hole. This setup is a lot more stable at really low pressures (stable below 0.1 bar in a hot forge on 0.6mm nozzle), it is quieter and the heat is more even in the forge. Not sure if this is a "ribbon burner" or something else but I really like these. the yellow flame colour in the pictures is mostly because of dust. it went away after a while. Quote Link to comment Share on other sites More sharing options...
Buzzkill Posted February 9, 2022 Share Posted February 9, 2022 It qualifies in my humble opinion, but regardless of what we call it, it does interest me. I'm curious about how long you've had it in use and if you've attempted to reach forge welding temperatures with it. Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted February 9, 2022 Share Posted February 9, 2022 I'm wondering about back ignition using the metal plate instead of a thick refractory block, any issues with long term use? Quote Link to comment Share on other sites More sharing options...
Frosty Posted February 9, 2022 Share Posted February 9, 2022 The "Ribbon" in ribbon burner is in reference to the shape being long and narrow. What you made is more of a "Button" burner. NABB(?) Latticino has been using multiple orifice burners for decades and whatever he says it's actually called is what I'll call it. I'll be looking forward to hearing how well it works for lengths of time. I'd be concerned that the metal plate you use for the orifices will get hot enough to cause ignition of the fuel air mixture in the plenum. (expansion chamber) Welcome to the multiple outlet burner maker club, glad to have you. Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
Domnu Posted February 9, 2022 Author Share Posted February 9, 2022 I have used this burner for about 3 months, about 3-6 hours a day with a lot of forgewelding. haven't had any problems with ignition in the plenum also no damage from oxidation on the plate itself. here is a picture of one of the other burners with a homemade plate. It has been running for approximately 50-60 hrs including a lot of forgewelding and looks just as crappy as the day I made it. Quote Link to comment Share on other sites More sharing options...
Buzzkill Posted February 11, 2022 Share Posted February 11, 2022 Good info. Thanks for sharing. I didn't really need another rabbit trail to run down, but now I've got one when I run out of things to do. That looks like less effort than some of the NARBs I've built, so if it functions as well or better overall I'm on board. I hope my latest one holds up for a while, but if it doesn't then I know what I'm going to try next. Quote Link to comment Share on other sites More sharing options...
Fatt Miner Posted February 18, 2022 Share Posted February 18, 2022 Interesting, you said you have a few different plates that you made, wanna show them? I want to make something like this so I'm pretty intrigued. Quote Link to comment Share on other sites More sharing options...
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