904L nicyuma kidakomeye cya karubone ndende ya allust austenitis ibyuma bitagira umuyonga.Kwiyongera kwumuringa muriki cyiciro biratanga imbaraga zo kurwanya aside igabanya cyane cyane aside sulfurike.Irwanya kandi cyane igitero cya chloride - byombi byangiza / byangirika.
Uru rwego ntabwo rufite magnetique mubihe byose kandi rufite gusudira neza no guhinduka.Imiterere ya austenitis nayo itanga iki cyiciro ubukana buhebuje, ndetse no munsi yubushyuhe bwa cryogenic.
904L ifite ibintu byinshi byingenzi byigiciro cyinshi nikel na molybdenum.Byinshi mubisabwa aho iki cyiciro cyakoze neza ubu birashobora kuzuzwa kubiciro bito na duplex idafite ibyuma 2205 (S31803 cyangwa S32205), kubwibyo ikoreshwa cyane ugereranije no mubihe byashize.
Ibyingenzi
Iyi mitungo isobanurwa kubicuruzwa bizunguruka (isahani, urupapuro na coil) muri ASTM B625.Ibintu bisa ariko ntabwo byanze bikunze bisa nkibindi bicuruzwa nka pipe, tube na bar muburyo bwihariye.
Ibigize
Imbonerahamwe 1.Ibigize bigizwe na 904L urwego rwibyuma bitagira umwanda.
| Icyiciro | C | Mn | Si | P | S | Cr | Mo | Ni | Cu | |
| 904L | min. max. | - 0.020 | - 2.00 | - 1.00 | - 0.045 | - 0.035 | 19.0 23.0 | 4.0 5.0 | 23.0 28.0 | 1.0 2.0 |
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Ibikoresho bya mashini
Imbonerahamwe 2.Ibikoresho bya mashini ya 904L yo mu rwego rwo hejuru.
| Icyiciro | Imbaraga za Tensile (MPa) min | Imbaraga Zitanga 0.2% Icyemezo (MPa) min | Kurambura (% muri 50mm) min | Gukomera | |
| Rockwell B (HR B) | Brinell (HB) | ||||
| 904L | 490 | 220 | 35 | 70-90 bisanzwe | - |
| Urutare rukomeye rwurwego rusanzwe gusa;izindi ndangagaciro zerekanwe imipaka. | |||||
Ibintu bifatika
Imbonerahamwe 3.Imiterere isanzwe yumubiri kuri 904L urwego rwicyuma.
| Icyiciro | Ubucucike | Modulus | Hagati ya Co-eff yo Kwagura Ubushyuhe (µm / m / ° C) | Amashanyarazi | Ubushyuhe bwihariye 0-100 ° C. | Elec Kurwanya | |||
| 0-100 ° C. | 0-315 ° C. | 0-538 ° C. | Kuri 20 ° C. | Kuri 500 ° C. | |||||
| 904L | 8000 | 200 | 15 | - | - | 13 | - | 500 | 850 |
Kugereranya Impamyabumenyi
Imbonerahamwe 4.Ibyiciro byerekana amanota 904L yo mucyuma.
| Icyiciro | UNS No. | Abongereza bakera | Euronorm | SS yo muri Suwede | Ikiyapani JIS | ||
| BS | En | No | Izina | ||||
| 904L | N08904 | 904S13 | - | 1.4539 | X1NiCrMoCuN25-20-5 | 2562 | - |
| Kugereranya biragereranijwe gusa.Urutonde rugenewe nkugereranya ibikoresho bisa nkibikorwantabwonka gahunda yo guhuza amasezerano.Niba ibisa neza bikenewe ibisobanuro byumwimerere bigomba kubazwa. | |||||||
Ibishoboka Ibindi Byiciro
Imbonerahamwe 5.Ibishoboka ubundi amanota kugeza 904L ibyuma bitagira umwanda.
| Icyiciro | Impamvu ishobora guhitamo aho kuba 904L |
| 316L | Igiciro gito ubundi, ariko hamwe no kurwanya ruswa cyane. |
| 6Mo | Birakenewe ko umuntu arwanya cyane gutobora no kurwanya ruswa. |
| 2205 | Kurwanya ruswa isa cyane, hamwe na 2205 ifite imbaraga za mashini nyinshi, kandi ku giciro gito kugeza 904L.(2205 ntibikwiriye ubushyuhe buri hejuru ya 300 ° C.) |
| Duplex | Kurwanya ruswa irakenewe, hamwe n'imbaraga zisumba 904L. |
Kurwanya ruswa
Nubwo mu ntangiriro yatejwe imbere yo kurwanya aside sulfurike nayo ifite imbaraga zo guhangana cyane n’ibidukikije.PRE ya 35 yerekana ko ibikoresho bifite imbaraga zo guhangana n’amazi ashyushye yo mu nyanja n’ibindi bidukikije bya chloride.Nikel nyinshi zirimo ibisubizo byiza cyane byo kurwanya ihungabana ryangirika kuruta amanota asanzwe ya austenitis.Umuringa wongera imbaraga zo kurwanya sulfurike nizindi zigabanya aside, cyane cyane murwego rwo hagati "rwagati rwagati".
Mubidukikije byinshi 904L ifite imikorere yangirika hagati yicyiciro gisanzwe cya austenitike 316L hamwe na molybdenum ivanze cyane 6% hamwe n amanota ya "super austenitike".
Muri acide ya nitric 904L ifite imbaraga nke ugereranije na molybdenum idafite amanota nka 304L na 310L.
Kubibazo byinshi byangirika byangirika mubidukikije bigoye ibyuma bigomba gukemurwa nyuma yakazi gakonje.
Kurwanya Ubushyuhe
Kurwanya neza okiside, ariko kimwe nandi manota avanze cyane arwaye ihungabana ryimiterere (imvura yibice byoroheje nka sigma) mubushyuhe bwo hejuru.904L ntigomba gukoreshwa hejuru ya 400 ° C.
Kuvura Ubushuhe
Umuti wo gukemura (Annealing) - ubushyuhe kugeza 1090-1175 ° C hanyuma ukonje vuba.Uru rwego ntirushobora gukomera no kuvura ubushyuhe.
Gusudira
904L irashobora gusudira neza nuburyo bwose busanzwe.Hagomba kwitonderwa nkuko iki cyiciro gikomera rwose austenitike, bityo rero birashobora gukonja cyane, cyane cyane mubudodo bubi.Ntabwo ubushyuhe bwabanjirije bukwiye gukoreshwa kandi mubihe byinshi nyuma yo kuvura ubushyuhe bwo gusudira nabwo ntibisabwa.AS 1554.6 ibanziriza-ibyiciro byo mu cyiciro cya 904L hamwe na electrode yo gusudira 904L.
Ibihimbano
904L ni isuku ryinshi, urwego rwa sulferi nkeya, kandi nkuko bitazakora imashini neza.Nubwo bimeze bityo amanota arashobora gutunganywa hakoreshejwe tekinoroji isanzwe.
Kwunama kuri radiyo nto birakorwa byoroshye.Mubihe byinshi ibi bikorwa bikonje.Annealing ikurikiraho ntabwo isabwa muri rusange, nubwo byakagombye gutekerezwa niba ibihimbano bigomba gukoreshwa ahantu hateganijwe ko ibintu byangirika bikabije.
Porogaramu
Porogaramu zisanzwe zirimo:
• Gutunganya igihingwa cya acide sulfurike, fosifori na acetike
• Gutunganya impapuro
• Ibigize ibihingwa byo gukuramo gaz
• Ibikoresho byo gukonjesha amazi yo mu nyanja
Ibigize uruganda rutunganya amavuta
• Insinga mu mvura ya electrostatike