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Author: Subject: Thermite Cutting Torch
specialactivitieSK
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[*] posted on 21-8-2021 at 10:45
Thermite Cutting Torch


I tried to make a Thermite Cutting Torch from patent https://patents.google.com/patent/WO2003006198A1/en

From the patent :

Preferably is a powder composition which comprises by weight from about 15% to 20% aluminum, from about 78% to 85% CuO, from about 1% to 3% SiC, and from about 0.2% to 4% nitrocellulose. The composition of the powder in the thermite charge 14 more preferably may include parts by weight about 16% to 18% aluminum, about 80% to 83% CuO, about 1% to 2% SiC, and about 0.5% to 2% nitrocellulose.
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used :
CuO : 80 %
Al : 16 %
NC : 4 % (from smokeless powder : NC 60%, DeGDN 35% )
(12.6%N)
_____________________________________

Visco fuse with vesuvit dont ignited the composition. Than I used sparkle from the top. Better would by the other side.

The result was a explosion.
_____________________________________

Video : https://www.youtube.com/watch?v=LPhrmw_C_w8

[Edited on 21-8-2021 by specialactivitieSK]

1.jpg - 176kB

[Edited on 21-8-2021 by specialactivitieSK]

[Edited on 21-8-2021 by specialactivitieSK]
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Johnny Cappone
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[*] posted on 21-8-2021 at 14:59


Thermite based on CuO and aluminum is known to be especially explosive. In fact, it is used as an alternative to explosive targets in shooting practice. A .22lr shot is enough to detonate it. I believe that adding nitrocellulose would only make the mixture even more sensitive.
By the way, you got a nice explosion in the video. I would say this is a pretty ineffective mixture to use in a cutting torch, unless the intent is to cut the space between your palm and fingers :D




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XeonTheMGPony
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[*] posted on 22-8-2021 at 04:55


Thermite when used for that purpose needs very high loading pressures. he must have had a air pocket some where.

NC acts to cool the burn, not sensitize
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JohnDoe13
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[*] posted on 22-8-2021 at 08:00


http://www.sciencemadness.org/talk/viewthread.php?tid=22599#...
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Brightthermite
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[*] posted on 24-8-2021 at 19:03


Ive read that Barium nitrate is used in some of the cutting compositions. https://en.wikipedia.org/wiki/Thermate
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ShotBored
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[*] posted on 25-8-2021 at 11:34


Quote: Originally posted by XeonTheMGPony  
Thermite when used for that purpose needs very high loading pressures. he must have had a air pocket some where.


Exactly what I was thinking. Consolidation pressures for thermite cutters are very high. To give you an idea, a rod cutting torch I make is pressed at 4 to 4.5 tons of pressure on a hydraulic press.
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specialactivitieSK
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[*] posted on 26-8-2021 at 01:22


This looks simple : Breach Pen

https://youtu.be/3Cuu8tG4wLM

Fire Pen

https://youtu.be/m5v__1Od4wA

[Edited on 26-8-2021 by specialactivitieSK]
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specialactivitieSK
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[*] posted on 27-8-2021 at 23:30


TEC Torch. It looks they use pellets. Thats better for pressing.

[Edited on 28-8-2021 by specialactivitieSK]

Screenshot_20210828-092430.png - 594kB
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Junk_Enginerd
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[*] posted on 28-8-2021 at 23:27


Quote: Originally posted by Brightthermite  
Ive read that Barium nitrate is used in some of the cutting compositions. https://en.wikipedia.org/wiki/Thermate


Make sense. Barium nitrate is what is used in sparklers IIRC, and they burn pretty much as I would want a cutting torch to burn.
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Fulmen
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[*] posted on 28-8-2021 at 23:38


Quote: Originally posted by specialactivitieSK  

Breach Pen

https://youtu.be/3Cuu8tG4wLM


Wow. Almost as fast as a battery powered angle grinder...




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Nitrosio
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[*] posted on 29-8-2021 at 00:46


Thermic Lancing:

https://www.youtube.com/watch?v=dt4v-vulKpEThermic Lancing


KClO4 + Mg = KCl + MgO + 1.5 O2
2 Fe + 1.5 O2 = Fe2O3
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