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Cindy Mathieu
Post     Subject: heat reflecting piant to protect a metal burntunnel/heatriser

We have found an emissivity coating for the inside of our cast refractory burn tunnels. Unfortunately, we have not tested it side by side with an uncoated version to see what the performance difference is. Theoretically, it should make the burn tunnels last longer. It is not made for metals, just refractory materials.

I can tell you it has be applied keeping the solution well mixed, which is difficult. It is also extremely expensive. It is available through your local refractory supplies dealer.
Satamax Antone
Post     Subject: heat reflecting piant to protect a metal burntunnel/heatriser

Guys, there's one metal i've been surprised by.

In europe, poujoulat makes thoses steel tube, with an aluminium coating, turning to alumina. Soo far, they seem to hold well.
William Bronson
Post     Subject: heat reflecting piant to protect a metal burntunnel/heatriser

This stuff is recommended by the metal working guys:Satinite

Neat name, used on blades as they are tempered(?) and inside the linings of forges/furnaces.
allen lumley
Post     Subject: heat reflecting piant to protect a metal burntunnel/heatriser

et al ; just as a point of clarification, there should be no metal at all in the Burn Tunnel, there are many was to make a RMH, but because we want Reflective materials only,that
absorb very little of the heat, and instead re-radiate it back into the Combustion zone to rapidly bring your rocket up to its freakishly high operating temperatures, metal would
be a poor choice at that location.

The only reason to have any metal surface to be found on the Heat Riser, is as a sacrificial form, soon to be burned away, the thinest metal possible would barely be little
enough for the same reasons listed for the Burn Tunnel, Temperatures in the Heat Riser should be 1600 dF and higher ! For the Craft ! Big AL
tel jetson
Post     Subject: heat reflecting piant to protect a metal burntunnel/heatriser

Karl De Pauw wrote:i found something that can resist some heat http://cfnewsads.thomasnet.com/images/large/622/622890.jpg



I would say that it's worth a shot, supposing the cost is not exorbitant. are you confident it will adhere to the metal?
Karl De Pauw
Post     Subject: heat reflecting piant to protect a metal burntunnel/heatriser

i found something that can resist some heat http://cfnewsads.thomasnet.com/images/large/622/622890.jpg
Karl De Pauw
Post     Subject: heat reflecting piant to protect a metal burntunnel/heatriser

I was thinking of a themocoat or insuladd as it reflects heat up more than 30% , i don't have their statistics but it is the same stuff they used to use on the space schuttel but now in a powder
tel jetson
Post     Subject: heat reflecting piant to protect a metal burntunnel/heatriser

I think you would be hard-pressed to find a paint that can handle those conditions. do you know of any?
Karl De Pauw
Post     Subject: heat reflecting piant to protect a metal burntunnel/heatriser

Has anyone ever tryed to paint the inside of a burntunnel or a haetriser useing heatreflecting paint to protect the metal from corrosion by the heat?does it hold stand or not?