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
Type 304 Stainless Steel: Arc-Melted, AOD-Refined and Cast into Blooms and Slabs
Stainless steel is steel with at least 10.5 % chromium, which forms a thin protective oxide film; type 304 (18/8, 1912) adds nickel. Melt steel with ferrochrome and ferronickel in an electric arc furnace, take the carbon out with argon and oxygen in an AOD converter, and cast it continuously into blooms for bars and wire or slabs for sheet.
The picture: our diagram of the route.
Ilọsíwájú
Factory process
Ìlànà
1
1
Melt the charge
Melt the charge
Melt steel together with ferrochrome and ferronickel in the electric arc furnace, aiming at about 18 % chromium and 8 % nickel.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ìdì irin líle1 ẹyọ
Àdàpọ̀ irin àti chromium1 as required
Àdàpọ̀ irin àti nickel1 as requiredÀwọn irinṣẹ́ tí a nílò:
Ààrò arc iná mọ̀nàmọ́ná2
2
Refine in the AOD converter
Refine in the AOD converter
Pour into a ladle and transfer to the AOD converter. Blow argon and oxygen through the melt to burn the carbon out as carbon monoxide, and adjust the composition by analysis.
Àwọn irinṣẹ́ tí a nílò:
Ṣíbí gígùn fún irin yíyọ́
Ẹ̀rọ ìyípadà AOD
Argon
Oxygen3
3
Cast it continuously
Cast it continuously
Ladle, tundish, water-cooled mould, spray chamber and withdrawal rolls, as for billets.
4
4
Cast blooms or slabs
Cast blooms or slabs
Cast blooms, about 25 × 25 cm, for bars and wire rod; or slabs, about 20 cm thick, for sheet. Cut to length with the torch.
Àwọn irinṣẹ́ tí a nílò:
Tundish
Mọ́ọ̀dù bàbà tí omi ń tutù
Yàrá ìfọ́n omi pẹ̀lú àgbá ìtìlẹ́yìn
Àgbá ìtọ́ àti ìfà jáde
Ọ̀pá iná ìgé oxyacetylene5
5
The 18/8 target
The 18/8 target
Ń ṣí ìwé Jupyter…
Àwọn ohun-èlò
3- 1 ẹyọÀyè
- 1 as requiredÀyè
- 1 as requiredÀyè
Ìtọ́nisọ́nà yìí ń ṣe
Blueprint tó jọra
Àwọn blueprint wọ̀nyí pín ìmọ̀ — ọ̀nà, ohun-èlò tàbí ìlànà
Continuous Casting of Steel Billets
láti ọwọ́ Forge
Iṣẹ́ Irin
12
0
0
0
0
0
Léwu
Extracting Chromium from Chromite — The Element That Paints the Rainbow
láti ọwọ́ Peter
Iṣẹ́ Irin
45
0
0
0
1
0
Léwu
Extracting Nickel from Pentlandite — The Devil's Copper That Wouldn't Behave
láti ọwọ́ Peter
Iṣẹ́ Irin
56
0
0
0
5
0
Making Steel in a Bessemer Converter — Mass Steel by Blowing Air Through Iron
láti ọwọ́ Thrawn
Iṣẹ́ Irin
54
0
0
0
1
0
CC0 Àgbègbè Gbogbogbò
Blueprint yìí ti jáde lábẹ́ CC0. O lè ṣe àdàkọ, yí padà, pín, àti lò láìsí ìyọ̀ǹda.
Ṣàtìlẹ́yìn Olùṣẹ́dá nípa rírà àwọn ọjà nipasẹ̀ Blueprint wọn Ẹ̀san Olùṣẹ́dá tí àwọn Olùtajà gbé kalẹ̀, tàbí ṣẹ̀dá àtúnṣe tuntun ti Blueprint yìí kí o sì fi sínú Blueprint rẹ gẹ́gẹ́ bí ìsopọ̀ láti pín owó-wíwọlé.