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Charcoal Finery Iron: the South Wales Process, Ball Hammered into Stamps (Percy, 1864)
The best iron for charcoal tin-plates, as Percy watched it made at the Morfa Tin-plate Works, Llanelly, on 9 September 1859: pig iron melted under coke in a running-out fire flows into two charcoal fineries, where it is broken up with charcoal, melted down before a cold blast and worked into a ball, which is hammered into a slab and broken into 'stamps'.
Charcoal is used because it holds no sulphide of iron, so no sulphur passes into the iron.
Source: J. Percy, Metallurgy: Iron and Steel (1864), pp. 581-586. Picture: Fig. 107, the refinery and two charcoal fineries at Morfa.
Juu
Unknown
Maagizo
1
1
Melt the pig under coke
Melt the pig under coke
Melt Pembrokeshire pig iron and Cumberland haematite pig iron together under coke in the running-out fire (melting finery), enough to fill two charcoal fineries: 5 to 6 cwt at Pont-y-Mister; 200 to 250 lb for each finery at Pontypool. Tap it at the bottom so that metal flows first, and keep the slag apart as far as you can. Not given: the proportion of the two pigs.
Vifaa kwa hatua hii:
Vitalu vya chuma ghafi1 5-6 cwt for two fineries
Kokoo ya kutengeneza chuma1 kipandeZana zinazohitajika:
Tanuri ya kusafishia
Injini ya kupuliza2
2
Fill the charcoal fineries
Fill the charcoal fineries
Run the molten metal into the two charcoal fineries, still hot from the last heat. Take off the slag that comes with it as a crust once it has set. Throw in a basket of charcoal and let the cold blast on full.
Vifaa kwa hatua hii:
Mkaa wa vipande (mti mgumu)1 a basket per finery, more as neededZana zinazohitajika:
Tanuri la kusafishaInjini ya kupuliza3
3
Break up and melt down
Break up and melt down
Break the friable, half-set metal with an iron bar, mix it with the charcoal and heap it towards the tuyere side, where it melts down before the blast ('sinking a lump'). Throw water on the charcoal at intervals so that it does not burn to waste. Keep loosening and raising the metal from the bottom and the tuyere side.
Zana zinazohitajika:
Mchokoo wa motoTanuri la kusafisha
Maji4
4
Gather the ball
Gather the ball
Put back pieces left from the last hammering with a two-pronged fork. Tap off the cinder several times and add charcoal, using the hooks at the sides as fulcra to press loose pieces down onto the ball. Lessen the blast at the end. At Morfa the metal went in at 2 h 10 m and the ball came out at 3 h 23 m.
Zana zinazohitajika:
Mchokoo wa motoTanuri la kusafisha5
5
Hammer the ball into a slab
Hammer the ball into a slab
Put the ball under the cam hammer with the tuyere mark facing the hammerman. Hammer it into a narrow slab, rounded at the ends, about 1 3/4 to 2 1/4 in. thick. While it is hot, nick it across deeply in seven or eight places with a chisel-ended bar under the hammer.
Zana zinazohitajika:
Nyundo ya kuangushwa
Koleo la forji6
6
Quench and break into stamps
Quench and break into stamps
Plunge the nicked slab, still red-hot, into cold water to loosen the oxide. Lay it nicks down across a long ribbed anvil and break it with a narrow-ended sledge into 'stamps' of about 26 lb. Set the end pieces apart, sort the rest by soundness, and return broken bits to the next charge.
Zana zinazohitajika:
Maji
Fuawe bapa
Nyundo kubwaKoleo la forjiVifaa
3- 1 5-6 cwt for two fineriesKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 1 a basket per finery, more as neededKishikilia Nafasi
Zana Zinazohitajika
9- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Vifaa vya Michoro Iliyounganishwa
Mchoro huu unatengeneza
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.