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Platinum Wire: Sponge Rammed, Baked, Forged and Drawn, Ure 1839
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14. Oktober 2026NO
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Platinum Wire: Sponge Rammed, Baked, Forged and Drawn, Ure 1839

No furnace of 1839 could melt platinum, so it was worked like a powder. Andrew Ure: pound the spongy metal, sift it, ram it hard into a cylinder, and bake it 36 hours in a kiln; pure platinum then forges into any shape. Forge a thin rod and draw it down through a drawplate to wire. The picture: our diagram of the five stages.
Lanjutan
Three days

Arahan

1

Pound and sift

Pound the platinum sponge in the mortar and pass it through a fine sieve.

Bahan untuk langkah ini:

PlatinumPlatinum10 g

Alatan diperlukan:

Lesung dan AluLesung dan Alu
Ayak Bermata HalusAyak Bermata Halus
Neraca dua piringNeraca dua piring
2

Ram it hard

Fill a short steel tube with the powder, put a close-fitting rod on top as a rammer and squeeze it in the vice as hard as you can, adding powder until the tube is packed. Push the pressed bar out.

Alatan diperlukan:

Tiub keluli 12 mmTiub keluli 12 mm
Rod besiRod besi
Ragum BangkuRagum Bangku
3

Bake

Bake the bar 36 hours at the full heat of the kiln. It shrinks by a fifth or a sixth of its volume.

Alatan diperlukan:

Tanur suhu tinggiTanur suhu tinggi
Penyepit tukang besiPenyepit tukang besi
Sarung Tangan Kerja KulitSarung Tangan Kerja Kulit
4

Forge a rod

Forge the bar on the anvil into a round rod, reheating it with the torch whenever it stiffens. File a point on one end.

Alatan diperlukan:

AndasAndas
Tukul kepala baji lintangTukul kepala baji lintang
Penyepit tukang besiPenyepit tukang besi
Obor PropanaObor Propana
Set KikirSet Kikir
Sarung Tangan Kerja KulitSarung Tangan Kerja Kulit
Cermin mata keselamatanCermin mata keselamatan
5

Draw

Wax the rod, push the point through the first hole of the drawplate held in the vice, grip it with the draw tongs and pull through. Go down hole by hole, annealing it red with the torch every few draws, until the caliper reads the size you want.

Alatan diperlukan:

Plat tarik keluliPlat tarik keluli
Ragum BangkuRagum Bangku
Playar tarikPlayar tarik
Lilin LebahLilin Lebah
Obor PropanaObor Propana
Angkup Digital 6 InciAngkup Digital 6 Inci
Sarung Tangan Kerja KulitSarung Tangan Kerja Kulit
6

How much wire

Memuatkan buku nota Jupyter…

Bahan

1
  • Pemegang Tempat

Alatan Diperlukan

18

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