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  • Users: delta2112
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  1. delta2112

    Can H2-O2 torch be used for heating?

    This is for sure not for coating. It's intended to produce very low (the lowest possible) CTE, block like, fused silica (with specific geometry). I think the posts you made are very very usefull to me. One more thing: can you give me some tips about a small furnance for melting this SiO2 soupe...
  2. delta2112

    Can H2-O2 torch be used for heating?

    What I want is to produce very high content silica glass. The only constraint is that I cannot pure it after I melt it. It has to be produced right there within the mold. The aim is to obtain the pure silica, so that is why I'm trying to use H2-C2 flame (sorry about the mistake in the title -...
  3. delta2112

    Can H2-O2 torch be used for heating?

    What I want to heat is sand (more or less) to produce SiO2 glass direclty in the molding. The torch will produce in the welding tip about 3000C. This is more than I need and I believe it will descrease pretty much the viscosity. Maybe you know more about it. The spot with this heat is arround 1...
  4. delta2112

    Can H2-O2 torch be used for heating?

    I'm interested in heating at the H2-O2 maximum temp a large mass (at least 1.5 cubic decimeter to start, and if OK, over 10 cubic decimeters) using the torch. The question is can this be done in a safe way without overheating the torch and hoses (the gear)? Is there a temperature limit for the...
  5. delta2112

    SiO2 melting

    As far as I know the arcs uses the conductivity of metal ore (iron ore or whatevere) as an resitive space between the electrods. There are the arcs coming from (if I'm not wrong). There might be thow an electric way to heat the glass, but don't know how expensive would be not only the...
  6. delta2112

    Design for waste water in space?

    As an engine for such large space craft designed for log trips aka Mars, Alpha Centaury, etc has to be electric (ionic, or plasma, etc.) the ship has a nuclear power generator. Guesing further that this will be designed a little bit further in future from today, it means we'll deal with a fusion...
  7. delta2112

    Design for waste water in space?

    On trip to Mars, for sure is not worse to recover the solid part, and only the water would be OK. Moreover the plant to recover water is cheaper and smaller and lighter. But for an Alpha Centauri trip, for sure they will need to grow food on board of the ship (much, much larger space craft) and...
  8. delta2112

    Magneto Dynamo Plasma Engine

    Do you know the order of magnitude of multiplication factor between the MPD accelerated by ionization current, ant those accelerated with external toroidal fields? Would it be possible to use them also for take-offs? As normal operation the electric engines are power limited, but specific...
  9. delta2112

    SiO2 melting

    GlassMann: you mention some carbon arcs for melting. Could you detail a little bit? It seems an interesting ideea. In fact I don't know how I could produce the arcs to melt the glass.
  10. delta2112

    Magneto Dynamo Plasma Engine

    I'd like to know how performant are the magneto dynamo plasma engine when plasma is accelerated with an external magnetic field and the internal electric field is just used for ionization.
  11. delta2112

    SiO2 melting

    I'm also interested in melting sand directly to produce high SiO2 glass, and I will start with about 3kg of sand. I though of using oxy torch (or torches) to melt it and some zirconia based castable cermaic. I found on InterNET this site: http://cotronics.com/vo/cotr/cm_castable.htm

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