On Wednesday, 8 December 2021 at 16:46:34 UTC+1, Robert Tomasik wrote:
> W Dniu 08.12.2021 o 13:41, J.F pisze:
> >>> A potem umieszcza sie w formie zaslepke z termitem ... nie zapali sie
> >>> od temperatury otaczajacych elementow ?
> >> Nie bo po pierwsze zauważ, że tygiel jednak jest daleko, a po drugie
> > Nie od tygla - od formy i szyny rozgrzanych do pomarańczowosci przed
> > zalaniem.
> Ale tam nie ma termitu. Termit jest w tyglu.
> >
> >> TERMIT zapala się grubo powyżej temperatury topienia się stali.
> > Naprawdę?
> > Chyba nie, bo po co by dawali troche termitu do zaslepki.
> Szyn nie spawałem. Bawiłem się tym w wojsku. Używa się go do przepalania
> betonu, czy stali pancernej. Z głowy pamiętam, że konieczna była
> temperatura 1.500°C do zapalenia.
>
> W internecie piszą o temperaturze 1000°C. Być może ten wojskowy ma nieco
> inny skład. Ale nawet 1000°C, to więcej, niż sugerowana temperatura
> podgrzania szyny 800~900°C.
>
>
> --
> Robert Tomasik
znalazłem przepalanie betonu termitem (thermitem)

Oh yes, thermite can burn through concrete. Thermite burns at about 5000 degrees F.,
or half the temperature at the surface of the sun. Some ash will form, which will
insulate the concrete to a degree, and further impede downward burning. How long do
underwater flares last?
Can thermite melt tank armor? - Restaurantnorman.com
www.restaurantnorman.com/can-thermite-melt-tank-armo
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Can Thermite Burn Through Concrete - SeniorCare2Share
https://www.seniorcare2share.com/can-thermite-burn-t
hrough-concrete

Thermite, a mixture of metal powder and metal oxide, is the hottest burning man-made
substance in the world. It burns at temperatures of more than 2,200C, enough to burn
through steel or asphalt. Can you burn through concrete? Concrete is one of the most
resistant building materials to heat and fire. Concrete is a form of masonry like
brick, clay or stone.
How far can thermite burn through concrete (if at all ...
https://www.quora.com/How-far-can-thermite-burn-thro
ugh-concrete-if-at-all

Oh yes, thermite can burn through concrete. Thermite burns at about 5000 degrees F.,
or half the temperature at the surface of the sun. How deeply it will burn of course
depends on the amount of fuel available. Most of the heat, of course, will go upward