IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Annealing Oven: a Firebrick Chamber over a Firebox
Annealing is holding work hot and letting it cool slowly so it loses its stresses or softens. Glass is held at about 454–482 °C for most kinds, then cooled slowly; metal is often left to cool in the oven with the fire out. Build a firebrick chamber over a small firebox, with a door, a damper and a pyrometer, so it can be held at heat and then shut up to cool.
The picture: putting bottles into the annealing oven at a glass works, 1908 (Lewis Hine).
Àárín
Two days, then drying
Ìlànà
1
1
Lay the firebox
Lay the firebox
On a level base, lay firebricks in refractory mortar for a small firebox with an opening for fuel and air.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Bíríkì Tí Ń Kojú Iná40 ẹyọ
Amọ̀ ìkọ́lé tí ń fara da iná10 kgÀwọn irinṣẹ́ tí a nílò:
Ìkọ́kọ́ amọ̀kọ́lé
Ìwọ̀n Ìtẹ́jú2
2
Grate and chamber
Grate and chamber
Forge iron bars to lay across the top of the firebox as a floor with gaps for the heat, and build the chamber walls on it, leaving a flue hole in the roof.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀pá irin lílù4 ẹyọBíríkì Tí Ń Kojú Iná30 ẹyọAmọ̀ ìkọ́lé tí ń fara da iná10 kgÀwọn irinṣẹ́ tí a nílò:
Ìléru alágbẹ̀dẹ
Ìdí Alágbẹ̀dẹ
Òòlù olórí ìtẹ̀ ìpakàÌkọ́kọ́ amọ̀kọ́lé3
3
Door, damper and pyrometer
Door, damper and pyrometer
Fit an iron-sheet door lined with brick and a sliding sheet damper over the flue. Set the pyrometer through the side wall into the chamber.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Pẹpẹ irin (tí a lù)2 ẹyọÀwọn irinṣẹ́ tí a nílò:
Òòlù olórí ìtẹ̀ ìpakà
Pirómítà4
4
Dry and first firing
Dry and first firing
Let the mortar dry for several days, then fire gently with charcoal and raise the heat slowly. Practise holding the chamber at the heat you need, and shutting door, damper and firebox to cool it down slowly.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Èédú10 as requiredÀwọn irinṣẹ́ tí a nílò:
Pirómítà
Ìbọ̀wọ́ Tí Ń Fara Da Ooru5
5
Bricks for the oven
Bricks for the oven
Ń ṣí ìwé Jupyter…
Àwọn ohun-èlò
5- 40 ẹyọÀyè
- Àyè
- 4 ẹyọÀyè
- 2 ẹyọÀyè
- 10 as requiredÀyè
Àwọn irinṣẹ́ tó nílò
7- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
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