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Ferrite Toroid Core: Copper-Zinc Ferrite Fired at 1050 °C, Held at 600 °C in Oxygen (Snoek)
Charlie

Dicipta oleh

Charlie

21. Oktober 2026DE
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Ferrite Toroid Core: Copper-Zinc Ferrite Fired at 1050 °C, Held at 600 °C in Oxygen (Snoek)

Ferrite is a ceramic magnet: iron oxide combined with other metal oxides, carrying magnetic flux while hardly conducting electricity. Snoek at Philips (US 2,452,531, 1948) made this copper-zinc ferrite ring at a lower heat: technical copper oxide, zinc oxide and iron oxide with 1 % brownstone, fired at 1050 °C, then held 14 hours at 600 °C, all in oxygen. His ring had an initial permeability of 385. The picture: our diagram.
Lanjutan
2 days

Arahan

1

Mix 20.7 : 31.6 : 47.7 mol + 1 % brownstone

Mix technical copper oxide, zinc oxide and iron oxide in the molecular ratio 20.7 : 31.6 : 47.7 (on the pure oxides) and add 1 % by weight of brownstone (manganese dioxide). Ours, by weight: 13.91 g copper oxide, 21.73 g zinc oxide and 64.36 g ferric oxide per 100 g, plus 1 g brownstone.

Bahan untuk langkah ini:

Kuprum OksidaKuprum Oksida13.91 g
Serbuk Zink OksidaSerbuk Zink Oksida21.73 g
Ferik OksidaFerik Oksida64.36 g
Mangan dioksida (pirolusit)Mangan dioksida (pirolusit)1 g

Alatan diperlukan:

Neraca dua piringNeraca dua piring
Topeng HabukTopeng Habuk
2

Grind for 3 hours in an iron ball mill

Grind the mixture for 3 hours in a mill with iron balls.

Alatan diperlukan:

Kilang Bebola BesiKilang Bebola Besi
Topeng HabukTopeng Habuk
3

Mould a ring at 4 tons per cm²

Mould a ring 3 cm across and 4 × 4 mm in section at 4 tons per square centimetre, with water as the plastifying and binding agent.

Alatan diperlukan:

Mesin tekan hidraulikMesin tekan hidraulik
Acuan Penekan GelangAcuan Penekan Gelang
Air SulingAir Suling
4

Fire 1 hour at 1050 °C, hold 14 hours at 600 °C

Sinter the ring in oxygen at 1050 °C for 1 hour, cool it slowly to 600 °C and hold it there for 14 hours, all in oxygen, then let it cool further. Snoek's core had an initial permeability of 385.

Alatan diperlukan:

Relau TiubRelau Tiub
OksigenOksigen
Silinder gas bertekananSilinder gas bertekanan
PirometerPirometer
Penyepit Mangkuk PijarPenyepit Mangkuk Pijar
Sarung Tangan Tahan HabaSarung Tangan Tahan Haba

Bahan

4

Alatan Diperlukan

12

CC0 Domain Awam

Blueprint ini dikeluarkan di bawah CC0. Anda bebas menyalin, mengubah, mengedar, dan menggunakan karya ini untuk sebarang tujuan, tanpa meminta kebenaran.

Sokong Pembuat dengan membeli produk melalui Blueprint mereka di mana mereka memperoleh Komisen Pembuat ditetapkan oleh Penjual, atau cipta iterasi baru Blueprint ini dan sertakan ia sebagai sambungan dalam Blueprint anda sendiri untuk berkongsi hasil.

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