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Phosphor Bronze Ingot: 90 Copper Melted under Charcoal with 10 Phosphor-Tin, Stirred with Graphite (Thurston)
Phosphor bronze is a tin bronze cleaned of oxide by a little phosphorus, which makes it sound, tough and springy. Thurston melts the copper under charcoal, stirs in phosphor-tin with a graphite bar, skims and pours at once.
Result: phosphor bronze of 90 parts copper and 10 parts phosphor-tin, cast into ingots.
Source: Thurston, A Treatise on Brasses, Bronzes and Other Alloys (1910), pp. 145-147. Not given: temperatures, mould. Picture drawn by Youblob.
Àárín
1 day
Ìlànà
1
1
Weigh 90 copper to 10 phosphor-tin
Weigh 90 copper to 10 phosphor-tin
Weigh 90 parts of copper to 10 parts of phosphor-tin, Thurston's mix for coupling and crank-rod journals. Use no zinc.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ìṣù Bàbà90 parts by weight
Táǹganran fọ́sífọ́rọ̀sì10 parts by weightÀwọn irinṣẹ́ tí a nílò:
Òǹwọ̀n ìdọ́gba2
2
Melt the copper under charcoal
Melt the copper under charcoal
Melt the copper in a plumbago crucible and cover it with charcoal as quickly as possible.
Àwọn irinṣẹ́ tí a nílò:
Ìkòkò graphite àti amọ̀
Ìléru kóńdó
Èédú3
3
Stir in the phosphor-tin with a graphite bar
Stir in the phosphor-tin with a graphite bar
Add the phosphor-tin while stirring the metal continually and carefully with a graphite bar, a strip of old plumbago crucible or a bar of retort carbon.
Àwọn irinṣẹ́ tí a nílò:
Elektrode graphite4
4
Skim and pour before a skin forms
Skim and pour before a skin forms
Clear the charcoal and dross off the top and pour before the surface begins to skin over. If the metal does not show a bright mirror face, a tiny further addition of phosphor metal is needed.
Àwọn irinṣẹ́ tí a nílò:
Ṣíbí oníhò
Ẹmú Ìkòkò Ìyọ́
Àwòṣe fún ìṣù irinÀwọn irinṣẹ́ tó nílò
8- Àyè
- Àyè
- Àyè
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