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Magnesium Ribbon: Rolled Hot at 450 °C and Slit
Capt. John Yossarian (Wikimedia Commons) · CC BY-SA 3.0
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18. uMfumfu 2026NO
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Magnesium Ribbon: Rolled Hot at 450 °C and Slit

Magnesium ribbon catches in a flame and burns with an intense white light, which makes it the lighter for a thermit charge. Thorpe (1912): magnesium is malleable but ductile only when hot, it can be rolled at 450 °C, and it is most used flattened into ribbon. It tarnishes in moist air, so store it dry. Keep flame away from the finished ribbon. The picture: magnesium ribbon burning (Wikimedia Commons).
Ophakathi
Half a day

Imiyalelo

1

Cut a piece

Saw a 20 g piece off the magnesium ingot.

Izinto zokwakha zalesi sinyathelo:

Ingot Ye-MagnesiumIngot Ye-Magnesium20 g

Amathuluzi adingekayo:

Isaha SensimbiIsaha Sensimbi
Isikali sesilinganisoIsikali sesilinganiso
2

Heat to 450 °C

Heat the piece to 450 °C in the furnace and check it with the pyrometer. Cold, magnesium is not ductile.

Amathuluzi adingekayo:

Isithando SamalahleIsithando Samalahle
I-pyrometerI-pyrometer
UdlawuUdlawu
Amagilavu EsikhumbaAmagilavu Esikhumba
3

Roll it thin

Pass it through the rolling mill, close the rolls a little each time, and reheat to 450 °C between passes. Stop at about 0.2 mm thick.

Amathuluzi adingekayo:

Umshini wokugingqa insimbiUmshini wokugingqa insimbi
Isithando SamalahleIsithando Samalahle
UdlawuUdlawu
I-MicrometerI-Micrometer
Amagilavu EsikhumbaAmagilavu Esikhumba
4

Slit and store

Cut the cold strip into ribbon about 3 mm wide, coil it, and keep it in a dry, closed jar.

Amathuluzi adingekayo:

Isikelo sensimbiIsikelo sensimbi
Ijeke Lengilazi ElinesivaloIjeke Lengilazi Elinesivalo

Izinto

1

Amathuluzi Adingekayo

10

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Iribhoni Ye-Magnesium

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