1. Womic Steel: Ubushobozi bwo gukora n'imbaraga z'ikigo
Womic Steel Group ni uruganda rukora ibintu byinshi runatumiza ibicuruzwa mu mahanga ku isi rufite uburambe bw'imyaka irenga 20 mu gukora imiyoboro ya alloy irwanya ingese. Urwego rwacu rwihariye rukora imiyoboro ya 904L ikoreshwa mu gukora imiyoboro igezweho ikoresha ikoranabuhanga rigezweho ryo gusudira hamwe no kugenzura neza uburyo ubushyuhe bwinjiramo no gutunganya ubushyuhe nyuma yo gusudira:
● Umurongo wa ERW (Gusudira Ubudahangarwa bw'Amashanyarazi):Ku bijyanye n'umurambararo kuva kuri mm 6.35 kugeza kuri mm 610 (1/4″ – 24″), ubugari bw'urukuta kuva kuri mm 0.5 kugeza kuri mm 12.7. Gusudira hakoreshejwe frequency nyinshi hamwe n'ubushyuhe buke (≤ 1.2 kJ/mm) kugira ngo hirindwe gutandukanya ingano y'ibirungo byinshi. Ni byiza ku miyoboro mito kugeza ku iringaniye ya 904L.
●Umurongo wa EFW (Electric Fusion Welding):Ku ngano y'umurambararo kuva kuri mm 219 kugeza kuri mm 1219 (8″ – 48″), ubugari bw'urukuta kuva kuri mm 4.0 kugeza kuri mm 40. Inzira y'imizi ya TIG (GTAW) ifite inzira zo kuzuza za SAW, hakoreshejwe icyuma gihuye nacyo (ERNiCrMo-3 cyangwa ER385).
●Umurongo wa LSAW / SAWL wo gukoresha Alloy nini:Ku ngano y'umurambararo kuva kuri mm 406 kugeza kuri mm 1219 (16″ – 48″), ubugari bw'urukuta bugera kuri mm 40. Gusudira arc y'amasahani ya 904L azingiye hamwe n'ubushyuhe bugenzurwa.
Imiyoboro yose ya 904L isukuwe inyuzwamo amazi (aspension annealing) kuri 1050-1150°C, hagakurikiraho kuzimya amazi kugira ngo ishongeshe ibyiciro bya kabiri kandi igarure ubushobozi bwo kurwanya ingese, hagakurikiraho gukaraba no gusimbuza amazi hakoreshejwe aside yihariye.
Impamyabumenyi z'Ubuziranenge n'Iyubahirizwa ry'Amategeko:
●Icyemezo cya ISO 9001:2015
●PED 2014/68/EU (CE Marking) ku bikoresho bitanga umuvuduko
●Icyemezo cya EN 10204 3.2 gifite icyemezo cy’uruhande rwa gatatu (TÜV, BV, SGS, LR)
●Ubugenzuzi bw'Uruhande rwa Gatatu (TPI) bwemewe na SGS, BV, ABS, DNV, TÜV
●NACE MR0175 / ISO 15156 yo gutanga serivisi nziza (H₂S) iyo ubisabye
●Kode y'Ubwato bw'Ingufu za ASME n'Ubushyuhe (Ingingo ya VIII, Div. 1) iyo ubisabye
Womic Steel itanga imiyoboro ya 904L isudiwe mu bihugu birenga 30 mu nganda zikora imiti, amazi yo mu mazi n'inganda zo mu nyanja.
Uburyo bworoshye bwo gukora:
●ERW: 6.35–610mm OD × 0.5–12.7mm Ubwinshi × ≤ 12m
●EFW: 219–1219mm OD × 4.0–40mm WIT × ≤ 12m (ndende iyo ubisabye)
●LSAW: 406–1219mm OD × 6.0–40mm Ubwinshi × ≤ 18m
●Amahitamo yo kurangiza: Yakuwemo ibirungo n'ibitonore, yakuwemo ibirungo by'umukara (ku miyoboro mito)
2. ASTM B673 UNS N08904: Imiterere y'ibikoresho n'imikorere yabyo
UNS N08904 (904L) ni icyuma gikozwe mu cyuma gikozwe mu buryo bwa super austenitic gifite nikeli nyinshi (23-28%), chromium nyinshi (19-23%), molybdenum (4-5%), na umuringa (1-2%). Inyongera y'umuringa itanga ubudahangarwa budasanzwe ku kugabanya aside nka aside sulfuri na fosforike. Molybdenum nyinshi na chromium bitanga ubudahangarwa bwiza mu bidukikije bya chloride. 904L ikunze gukoreshwa nk'uburyo buhendutse bwo gusimbura aloyi za nikeli mu bihe biri hagati.
Ibikubiye mu binyabutabire (Isesengura ry'inkombe, % ku bunini):
| Igice | UNS N08904 (904L) | 316L (kugereranya) |
| C | ≤ 0.020 | ≤ 0.030 |
| Mn | ≤ 2.00 | ≤ 2.00 |
| P | ≤ 0.040 | ≤ 0.045 |
| S | ≤ 0.030 | ≤ 0.030 |
| Si | ≤ 1.00 | ≤ 1.00 |
| Cr | 19.0 – 23.0 | 16.0 – 18.0 |
| Ni | 23.0 – 28.0 | 10.0 – 14.0 |
| Mo | 4.0 – 5.0 | 2.0 – 3.0 |
| Cu | 1.0 – 2.0 | — |
| Fe | Kuringaniza | Kuringaniza |
Imiterere ya mekanike (Ubushyuhe bw'icyumba, Umuti washyizwemo):
| Umutungo | UNS N08904 (904L) |
| Imbaraga z'umusaruro (uburemere, 0.2% by'igabanuka) | 220 MPa (31,900 psi) |
| Imbaraga zo Gufata (iminota) | 490 MPa (71.100 psi) |
| Uburebure (ubugari bwa minini, 50mm) | 35% |
| Ubukomere (ntarengwa) | HRB 90 |
Imiterere ifatika:
Ubucucike: 8.00 g/cm³
Modulus yo guhagarara: 195 GPa (28.3 × 10⁶ psi)
Ubushobozi bwo gutwara ubushyuhe: 12.0 W/m·K kuri 100°
Igipimo cy'ubushyuhe: 15.4 × 10⁻⁶/°C (20-100°C)Ubudahangarwa ku ngaruka:
Gutera Kurwanya Umubare uhwanye (PREN) = Cr% + 3.3 (Mo%) + 16 (N%) ≈ 35-40 (vs 316L PREN 24-26)
Irwanya aside sulfuriki neza mu rugero runini (kugeza kuri 90% ku bushyuhe buringaniye)
Ubudahangarwa budasanzwe kuri aside fosforike (uburyo butose) irimo kloride na fluoride
Ubudahangarwa bwiza ku myobo n'ingufu mu bidukikije bya chloride
Irwanya neza ingese hagati y'udusimba nyuma yo gusudira (ikaruboni nke)
Ikwiriye serivisi ishyushye (NACE MR0175) hamwe n'ubushyuhe bukwiye
Imipaka yo kwangirika (Hafi):
● Aside sulfuriki (H₂SO₄): kugeza kuri 90% kuri 50°C; kugeza kuri 70% kuri 100°C
● Aside ya Hydrochloric (HCl): igarukira ku gushonga (< 5%) ku bushyuhe bw'icyumba
● Aside ya fosiforike (H₃PO₄): nziza cyane kugeza kuri 85% kuri 100°C
● Aside asetiki: nziza cyane ku rugero rwose
● Amazi yo mu nyanja: ni meza cyane ku bushyuhe bugera kuri 50°C
3. Iyubahirizwa ry'ibipimo n'amahame ngenderwaho
| Ikintu | Ibisobanuro |
| Igisanzwe | ASTM B673 / ASME SB-673 (umuyoboro ushongeshejwe) |
| Uburyo bwo gukora | ERW, EFW, LSAW |
| Intera y'Ubugari bwo Hanze | ERW: 6.35 - 610mm; EFW / LSAW: 219 - 1219mm |
| Ubunini bw'urukuta | ERW: 0.5 - 12.7mm; EFW / LSAW: 4.0 - 40mm |
| Ingano y'ingengabihe | 5S, 10S, 40S (kuri NPS 1/8″ – 48″) |
| Intera y'uburebure | Uburebure busanzwe: 6m; Uburebure: 12m, 18m, kugeza kuri 18m |
| Irangizwa rya nyuma | Iherezo Risanzwe (PE), Iherezo Rifite Imirongo Igororotse (BE) |
| Kurangiza ubuso | Yakuwemo ibinure n'ibitonore, Yakuwemo ibinure by'akataraboneka |
| Kwihanganirana | OD: ± 0.5% cyangwa ± 3.2mm; Uburemere: ± 12.5% (kuri ASTM B775); Uburebure: +50mm / -0mm |
4. Ingano n'Ibisobanuro bihari – Umuyoboro w'icyuma gitemba cya ASTM B673 UNS N08904 (Ingano zisanzwe zatoranijwe)
| NPS | OD (mm) | Gahunda | Uburemere (mm) | Uburemere (kg/m2) | Uburebure Busanzwe | Uburyo busanzwe bwo gukoresha |
| 1/2″ | 21.3 | 10S | 2.11 | 1.00 | 6m | Gupima imiti |
| 3/4″ | 26.7 | 10S | 2.11 | 1.28 | 6m | Umurongo w'ibikoresho by'ikoranabuhanga |
| 1″ | 33.4 | 10S | 2.77 | 2.09 | 6m | Ibiryo bya aside |
| 1-1/2″ | 48.3 | 10S | 2.77 | 3.11 | 6m | Umurongo wa aside sulfuriki |
| 2″ | 60.3 | 10S | 2.77 | 3.93 | 6m / 12m | Umurongo w'ibikorwa |
| 3″ | 88.9 | 10S | 3.05 | 6.46 | 6m / 12m | Kohereza aside |
| 4″ | 114.3 | 10S | 3.05 | 8.37 | 6m / 12m | aside fosiforike |
| 6″ | 168.3 | 10S | 3.40 | 13.8 | 6m / 12m | Gukonjesha amazi yo mu nyanja |
| 8″ | 219.1 | 10S | 3.76 | 20.0 | Metero 12 | Umurongo w'ibiryo biryoshye byo mu mazi |
| 10″ | 273.0 | 10S | 4.19 | 27.8 | Metero 12 | Isoko rya FGD |
| 12″ | 323.9 | 10S | 4.57 | 36.0 | Metero 12 | Igikoresho cy'ingenzi cya shimi |
| 16″ | 406.4 | 10S | 4.78 | 47.4 | Metero 12 | Ubunini bw'umurambararo |
*Ingano zihariye ziboneka hanze y’izi ntera. Imiyoboro ya 904L ishongeshejwe ikenera igihe kirekire cyo kuyikoresha (nibura iminsi 60) bitewe n’uburyo bwihariye bwo kuyikoresha mu gukata/gushyiramo ibyuma.*
5. Amahame n'Ibyiciro bisanzwe bya Super Austenitic byakozwe na Womic Steel
| Igisanzwe | Ingano z'icyuma / Alloy | Uburyo busanzwe bwo gukoresha | Uburyo bwo gusudira |
| ASTM B673 | UNS N08904 (904L) | Aside ya Sulfurike/Fosforike, amazi yo mu nyanja | EFW/LSAW/ERW |
| ASTM B674 | UNS N08904 (idafite umushono) | Umuyoboro w'umuvuduko | - |
| ASTM B677 | UNS N08904 | Umuyoboro utagira umushono | - |
| EN 10217-7 | 1.4539 (904L) | Imiterere y'igitutu, idasanzwe cyane | SAW/ERW |
| ASTM A312 | UNS N08367 (AL-6XN), S31254 (254 SMO) | Amazi yo mu nyanja, FGD | EFW/LSAW |
Ikoreshwa:Ibimera bya aside sulfuriki, gukora aside phosphorike, sisitemu za FGD, gukonjesha amazi yo mu nyanja (ubushyuhe buri hejuru), amato y'ibinyabutabire, serivisi yo gukamura amazi mu mazi.
6. Uburyo bwo gukora - Umuyoboro w'icyuma kidasanza ushongeshejwe (ERW, EFW, LSAW)
Gusudira 904L bisaba kugenzura neza uburyo ubushyuhe bushyirwamo no gutunganya ubushyuhe nyuma yo gusudira bitewe n'uko irimo umuringa mwinshi. Umuringa na molybdenum bituma umuringa uhinduka iyo ubukonje butinze cyane.
Uburyo bwo gusudira ERW (Gusudira Ubudahangarwa bw'Amashanyarazi) – Ubugari Buto Kuva Kuri Hagati (6.35–610mm OD):
●Igenzura ry'ibikoresho fatizo (Umurongo/Umwobo):Agace ka 904L kagenzuwe ko gafite imiterere (Ni 23-28%, Cr 19-23%, Mo 4-5%, Cu 1-2%). Buri koyili ifite umubare wihariye w'ubushyuhe.
●Gufungura no Kugorora
●Gukata Inkombe z'Imirongo
●Gukora:Gutunganya imizingo mu buryo buhoraho.
●Gusudira inshuro nyinshi:Ingufu nke zinjira mu bushyuhe (≤ 1.2 kJ/mm) kugira ngo hirindwe gutandukanya Cu/Mo. Gusudira mu kirere kidakora neza.
●Gufunga umushongi:Gutera induction annealing bikurikirwa no kuzimya amazi.
●Ingano no Kugorora
●Gukata kugeza ku burebure
●NDT:Ikizamini cya Eddy current (100%) + UT y'ubushake.
●Gufunga umuti (Umuyoboro wuzuye):1050-1150°C, amazi yo kuzimya. Ni ngombwa mu gushonga kw'ibyiciro bya kabiri.
●Ikizamini cy'amazi
●Guteka no gushyuha(aside ivanze yihariye yo gukoresha aloyi nyinshi)
●Igenzura rya PMI (XRF) n'ubukomere
●Igenzura rya nyuma n'ibimenyetso
Uburyo bwo gusudira hakoreshejwe EFW (Electric Fusion Welding) – Ubugari bunini (219–1219mm OD, 4.0–40mm WIT):
●Gutegura isahani:Isahani ya 904L, impande zayo zikozwe mu buryo bwa X.
●Gukora imizingo
●Gusudira ku mpande
●TIG (GTAW) Root Pass:Ifuru ihuye (ERNiCrMo-3 cyangwa ER385), gaze ishyigikira argon.
●Impamyabumenyi zo kurangiza SAW n'izijyanye n'umusozo:Ingufu zinjira mu bushyuhe ≤ 1.5 kJ/mm, ubushyuhe bwo hagati ≤ 120°C. Ingufu zidasanzwe zo mu bwoko bwa sulfure nkeya.
●Ubusode bw'imbere
●Isuzuma rya X-ray 100% + UT(kuri ASTM B775)
●Gufata umuti:Gukoresha ubushyuhe bwose bw'imiyoboro (1050-1150°C), kuzimya amazi.
●Guteka no gushyuha
●Ikizamini cy'amazi
●Igenzura rya PMI n'ibipimo
●Gushyira ikimenyetso
Uburyo bwa LSAW bwo gukoresha Alloy nini cyane – Umurambararo munini cyane (406–1219mm OD, 6.0–40mm WIT):
● UOE cyangwa JCOE ikozwe mu gipande cya 904L
● Gusudira SAW ku mpande ebyiri hamwe n'uburyo buhamye bwo kugenzura ubushyuhe
● Gutera umuti wose nyuma yo gusudira
Ingingo z'ingenzi zo kugenzura ubushuhe bwa 904L:
● Ingufu zikoreshwa mu gushyushya: ≤ 1.5 kJ/mm (intego ≤ 1.2 kJ/mm)
● Ubushyuhe bw'aho unyura: ≤ 120°
● Imyuka yo kurinda: Argon 100% hamwe n'umwuka ukoresha umwuka wa ogisijeni
● Gutera umuti: 1050-1150°C, amazi yo kuzimya - ni ngombwa
● Guteka: Uruvange rwihariye rwa aside rukoreshwa mu gukora chromium/nickel nyinshi
7. Uburyo bwo kugenzura no gupima ubuziranenge bw'umuyoboro wa ASTM B673 UNS N08904 w'icyuma gishongeshejwe
| Urugendo | Uburyo bwo kugenzura | Intego |
| Ibikoresho fatizo | Isesengura ry'ibinyabutabire (OES cyangwa ICP) | Kugenzura N08904 (Ni 23-28%, Cr 19-23%, Mo 4-5%, Cu 1-2%) |
| Ibikoresho fatizo | Isuzuma ry'umukandara | Umusaruro ≥ 220 MPa, Gufata ≥ 490 MPa |
| Ibikoresho fatizo | Ikizamini cya ruswa (ASTM G28) | Ubudahangarwa bw'ubushyuhe hagati y'udukoko (ku bijyanye no gutanga aside) |
| Ibikoresho fatizo | Ibarura rya PREN | Menya neza ko PREN ari ≥ 35 |
| Muri gahunda | Gukurikirana Ibyinjira mu Bushyuhe | ≤ 1.5 kJ/mm |
| Muri gahunda | Ubushyuhe bwo hagati y'inzira | ≤ 120°C |
| Gusudira (ERW) | Umuyoboro wa Eddy (100%) | Ubusudizi bw'ubudozi |
| Gusudira (EFW/LSAW) | 100% UT (cyangwa PAUT) | Kumenya inenge zo gusudira |
| Gusudira (EFW/LSAW) | RT (10-100% kuri buri gipimo) | Ubwiza bw'ubushude |
| Gusudira | Irangi rivamo irangi (PT) | Uduce tw'ubuso |
| Nyuma yo Gufata Umuti | Ikizamini cy'Ubukomere | ≤ 90 HRB |
| Nyuma yo Gufata Umuti | Imiterere mito (ASTM E407) | Nta sigma, chi, cyangwa ibyiciro bya kabiri |
| Umuyoboro warangiye | Ikizamini cy'amazi | Ubusugire bw'igitutu |
| Umuyoboro warangiye | PMI (XRF) | Emeza amanota (Ni, Cr, Mo, Cu) |
| Umuyoboro warangiye | Ikizamini cyo kwangirika kw'ibice (ASTM G48) | Emeza ko umuyoboro udashobora kunyuramo (niba byavuzwe) |
| Umuyoboro warangiye | Ishusho n'Ibimenyetso | Gukurikirana |
Ibizamini by'ubushake kuri serivisi z'ingenzi:
● ASTM G28 Practice A (aside ferric sulfate-sulfuric) mu kurwanya ingese hagati y'udukoko
● Ikizamini cya ASTM G48 cyo gupima imiyoboro muri FeCl₃ (6% kuri 40°C) ku bijyanye no gutanga serivisi ku mazi yo mu nyanja
● Gupima serivisi ya sour kuri HIC/SSC (NACE TM0284, TM0177)
● Ikizamini cya sulfate y'umuringa kugira ngo kigabanye ubudahangarwa bw'aside
8. Porogaramu z'ibanze - Umuyoboro w'icyuma gishyushye wa ASTM B673 UNS N08904
●Ibimera bya aside sulfuriki:Gufata aside yiganjemo (90-98% H₂SO₄) ku bushyuhe buringaniye, gukata aside (5-10%) ku bushyuhe buri hejuru, no gukoresha imiyoboro ikonjesha aside. Bisimbura 316L na 317L.
●Gukora aside fosiforike (uburyo bwo gutoha):Imashini zishyushya ibintu, ibyuma bikonjesha, n'imiyoboro y'amazi ikoresha aside fosforike irimo kloride na fluoride. 904L ni yo ikoreshwa mu gupima aside fosforike ikoreshwa mu buryo busanzwe.
●Imiyoboro y'amazi asohoka akoresha imyuka ihumanya ikirere (FGD):Munsi y'ibinyabutabire bigabanya umwuka aho haba hari imyuka itose irimo aside ya chloride. 904L ikoreshwa mu gusohora imiyoboro y'amazi no mu gufunga aho 317L idahagije.
●Uburyo bwo gukonjesha amazi yo mu nyanja (ubushyuhe buri hejuru):Sisitemu z'amazi akonjesha yo ku nkombe aho ubushyuhe bw'amazi yo mu nyanja burenga dogere selisiyusi 40. Litiro 904 zirwanya imyobo mu bushyuhe aho Litiro 316 ndetse na super duplex zishobora kwangirika.
●Amato y'ibinyabutabire (IMO Type II):Imiyoboro y'imizigo ku binyabutabire bikomeye birimo aside sulfuriki, aside phosphoriki, na aside organic. 904L yemewe n'ibigo byinshi bitwara imiti.
●Serivisi yo gucuruza mu mahanga:Umusaruro wa peteroli na gaze hamwe na H₂S nyinshi na chloride nyinshi, cyane cyane aho ubushyuhe buri hagati ariko igipimo cya corrosion kirenze duplex.
●Ibimera byo gusiga ibinure n'impapuro:Serivisi ya chlorine dioxide na sodium hypochlorite aho 317L idahagije.
●Ibikoresho by'imiti:Ibikoresho byo kuvura aside ikomeye n'imiyoboro y'amazi.
●Ibikoresho byo gusiga amarangi ku myenda:Imashini zikora irangi zikoresha irangi rya chlorine.
●Gutunganya ibiryo:Umunyu mwinshi wa chloride, inzoga zo mu bwoko bwa pickle, n'ibikomoka ku biribwa bikomoka kuri aside.
9. Gupakira no Kohereza - JIS A5525 SKK490 SSAW Icyuma cy'Umuyoboro
Gupfunyika:
●Ubwirinzi bwo kurwanya ingese:Igipfunyika cya pulasitiki cyangwa impapuro za VCI. Nta bisigazwa by'amavuta byo gukoresha imiti.
●Ingofero z'inyuma:Imipfundikizo ya pulasitiki ikomeye (ifite ibara ry'umukara - ubusanzwe ni ubururu bwa 904L).
●Guhuza (Ubugari buto):Buri muyoboro upfunyitse ukwawo, hanyuma ugahambirwa imigozi itari iy'icyuma.
●Udupaki twihariye (Ubugari bunini):Igipfunyika cya pulasitiki gifite impeta za foam.
●Amasanduku y'ibitiku mishinga y'ingenzi y'ibinyabutabire n'iy'inyanja.
Kohereza:
Ibikoresho bifite uburebure bwa ≤ 610mm, bigabanya ubunini ku ngano nini.
Inyandiko:MTC 3.1/3.2, raporo y'ibizamini bya hydrotest, raporo za UT/RT, raporo ya PMI, raporo y'ibizamini bya corruption (niba byavuzwe), raporo y'ibipimo, urutonde rw'ibipakiye, COO. Uburyo bwose bwo gukurikirana kuva ku mubare w'ubushyuhe kugeza ku muyoboro warangiye.
10. Ibyiza n'Ibibazo Bikunze Kubazwa mu byuma bya Womic Steel – ASTM B673 UNS N08904 Umuyoboro Usudiwe
Kuki wafatanya na Womic Steel ku muyoboro wa 904L Welded?
● Ingano yuzuye: ERW 1/4″ – 24″, EFW/LSAW 8″ – 48″.
● Gufunga byuzuye nyuma yo gusudira (1050-1150°C, kuzimya amazi).
● Gupima ingese mu nzu (ASTM G28, G48) kugira ngo harebwe serivisi ya aside n'amazi yo mu nyanja.
● PREN ≥ 35 - kwihanganira ibintu byiza.
● Igihe cyo guhatana: iminsi 60-75 kuri ERW, iminsi 75-90 kuri EFW/LSAW.
Icyemezo cyisi yose: ISO 9001, PED (CE), EN 10204 Ubwoko 3.2.
Ibibazo Bikunze Kubazwa (Ibibazo Bikunze Kubazwa) - ASTM B673 UNS N08904 Umuyoboro Usudiwe
Q: Ni irihe tandukaniro riri hagati ya 904L na 316L?
A: 904L ifite nikeli iri hejuru cyane (23-28% ugereranyije na 10-14%), chromium iri hejuru (19-23% ugereranyije na 16-18%), molybdenum iri hejuru (4-5% ugereranyije na 2-3%), hamwe n'umuringa wongewemo (1-2%). Ibi bitanga 904L ubushobozi bwo kurwanya aside sulfurike, aside phosphoric, n'imyanda muri chloride. PREN ni 35-40 ugereranyije na 24-26 kuri 316L. 904L ifite igiciro cyikubye inshuro 3-4 ugereranyije na 316L kandi ikoreshwa aho 316L inanirwa.
Q: Ese 904L ikwiriye gukoreshwa mu mazi yo mu nyanja?
A: Yego. 904L ifite ubushobozi bwo kurwanya ingese mu mazi yo mu nyanja kugeza ku bushyuhe bwa dogere selisiyusi 50. Ku bushyuhe bwinshi cyangwa ahantu hadakora neza, hashobora kuba hakenewe super duplex cyangwa nickel alloys. 904L ikunze gukoreshwa mu gukonjesha amazi yo mu nyanja aho 316L yananiwe.
Q: Ni ubushyuhe ntarengwa bwa serivisi kuri 904L muri aside sulfurike ni ubuhe?
A: Muri 50-70% H₂SO₄, 904L ishobora gukoreshwa kugeza kuri 100°C. Muri 90-96% H₂SO₄, ntarengwa kuri 50-60°C. Ku bushyuhe bwinshi cyangwa aside nyinshi, hakenewe alloys nyinshi za nikeli (Alloy 20, Alloy 625, Alloy C-276). Buri gihe reba imbonerahamwe z'ingufu kugira ngo umenye imiterere yihariye.
Q: Ese 904L isaba gukururwa n'umuti nyuma yo gusudira?
A: Yego, kuri ASTM B673. 904L ishobora gukora ibice bya kabiri (sigma, chi) muri HAZ yo gusimbuza iyo gukonjesha bitinze. Gusimbuza umuti kuri 1050-1150°C hagakurikiraho amazi yo kuzimya ibi bice bigasubizaho ubudahangarwa bw'ingese. Womic ikora uburyo bwose bwo gusimbuza umuti ku miyoboro yose ya 904L yo gusimbuza. Ku gusudira mu murima, koresha ubushyuhe buke kandi utekereze ku gusimbuza umuti nyuma yo gusimbuza niba bishoboka.
Q: Ni ubuhe buryo bwo gusudira bw'icyuma busabwa kuri 904L?
A: AWS A5.14 ERNiCrMo-3 (Inconel 625) cyangwa ER385 ni byo byiza. ERNiCrMo-3 ikoreshwa cyane kandi itanga ubushobozi bwo kurwanya ingese bungana na 904L. ER385 ni icyuma cyihariye gihuza 904L. Womic ikoresha ERNiCrMo-3 mu bikorwa bya EFW.
Q: Ese 904L ikwiriye gukoreshwa mu gutanga serivisi nziza (H₂S)?
A: Yego, 904L yujuje ibisabwa kuri NACE MR0175/ISO 15156 kugira ngo ikoreshwe mu gukamura ibinure hamwe n’umuvuduko wa H₂S ugera kuri bar 1 (15 psi) mu byiciro byihariye by’ubukana. Ikunze gukoreshwa mu mirima iringaniye aho duplex idahagije bitewe na chloride nyinshi.
Q: Igihe gisanzwe cyo gukoresha umuyoboro wa 904L uhujwe ni ikihe?
A: Iminsi 60-75 kuri ERW (ubugari buto kugeza ku buringanire), iminsi 75-90 kuri EFW/LSAW (ubugari bunini). Igihe cy'ubugari ni kirekire kurusha ibyuma bisanzwe bitagira umugese bitewe n'uburyo bwihariye bwo gukusanya ibyuma/amasafuriya (akenshi ibyumweru 12-16 uhereye ku cyuma gisya). Igenzura ry'umuntu wa gatatu ryongeraho iminsi 7-14.
Q: Ese 904L ishobora gukoreshwa mu miyoboro y'amazi meza cyane?
A: Yego, ariko akenshi iba irenze urugero. Ku mazi meza cyane (RO, DI, WFI), 316L irahagije kandi ihendutse. 904L igenewe gukoreshwa mu bintu bihumanya ikirere cyangwa chloride nyinshi.
Icyitonderwa cy'umushinga - Isimbura imiyoboro yo gukonjesha ikoreshwa mu bimera bya aside sulfuriki by'i Burayi
Igihugu:Ubudage (Rhine ya Ruguru-Westphalia, ishami rishinzwe imiti)
Igipimo n'Icyiciro:ASTM B673 UNS N08904 (904L) – umuyoboro ushongeshejwe
Ingano n'ingano:
● OD 88.9mm (3″) × Gahunda ya 10S (3.05mm WIT) – metero 600 (hafi toni 5) – Uburyo bwa ERW
● OD 114.3mm (4″) × Gahunda ya 10S (3.05mm WIT) – metero 500 (hafi toni 6) – Uburyo bwa ERW
● OD 168.3mm (6″) × Gahunda ya 10S (3.40mm WIT) – metero 300 (hafi toni 4) – Uburyo bwa EFW
● OD 219.1mm (8″) × Gahunda ya 10S (3.76mm WIT) – metero 200 (hafi toni 4) – Uburyo bwa EFW
Igiteranyo:Metero 1.600, hafi toni 19
Ibisobanuro:Ingano za ASTM B673 UNS N08904 zakuwemo amazi n'ibinyampeke, zikozwe mu mitobe. Isuzuma ry'amazi ku gitutu cya 1.5 × (igishushanyo mbonera cya 1.2 MPa). 100% UT ku miyoboro ya EFW, umuyoboro w'amazi kuri ERW. PMI kuri buri muyoboro. Isuzuma ry'ubushyuhe ritegetswe kuri buri ASTM G28 Imyitozo A (aside sulfate-sulfuriki ya feri) – igipimo cya ubushyuhe < 5 mpy (byagezweho 2-3 mpy). Isuzuma ry'ubushyuhe kuri buri ASTM G48 Imyitozo A (6% FeCl₃, amasaha 24 kuri 40°C) – nta mwobo urimo. Isuzuma ry'ubushyuhe hagati y'ibinyampeke kuri buri ASTM A262 Imyitozo E (inyuze). Igenzura ry'uruhande rwa gatatu ryakozwe na TÜV Ubudage.
Porogaramu:Gusimbuza imiyoboro ikonjesha aside n'imiyoboro ijyana nayo mu ruganda ruvugurura aside sulfure. Iyi miyoboro ifata aside sulfure ishyushye (85-93% H₂SO₄) kuri 70-90°C kuva ku munara wo kwinjizamo aside ukajya ku gikonjesha aside. Imiyoboro ya mbere ya 316L yarananiwe nyuma y'amezi 18 kubera ingese n'ibihombo. 904L yatoranijwe kubera ko irwanya aside sulfure cyane mu bushyuhe bwinshi.
Ibibazo bya tekiniki n'ibisubizo:
●Gutumuka mu gipimo cya aside sulfuriki ishyushye cyane (85-93%, 70-90°C)– 316L irangirika ku gipimo kiri hejuru ya 50 mpy muri ubu buryo. 904L ifite nikeli nyinshi, chromium, molybdenum, na umuringa itanga igipimo cyo kwangirika < 5 mpy. Womic yakoze ikizamini cya ASTM G28 Practice A ku byuma by'ibanze n'ibipimo byo gusudira. Igipimo cyo kwangirika: icyuma cy'ibanze 2.1 mpy, gusudira 2.8 mpy - munsi cyane ya 5 mpy ntarengwa. Umukiriya yemewe.
●Ubudahangarwa bw'icyuma mu kwahurwa– Aho gusudira niho hakunze kwibasirwa cyane. Womic yakoresheje ubushyuhe buke (≤ 1.2 kJ/mm) na ERNiCrMo-3 filler. Ingero za Sudira zatsinze ikizamini cya G28 ku gipimo cya corruption cya 2.8-3.2 mpy. Imiterere ya Microstructure nta mvura yagaragaye mu cyiciro cya kabiri.
●Ubudahangarwa bw'aho umugozi unyura ku bushyuhe bwinshi– Aside irimo chloride nto (ituruka ku mazi). PREN 35-40 ya 904L itanga ubushobozi bwo kwirinda imyobo. Womic yakoze ikizamini cya G48 kuri 40°C (ubushyuhe bukabije kurusha ubushyuhe bwa serivisi 70°C? Mu by'ukuri ubushyuhe bwa 40°C ni buke, ariko FeCl₃ irakomeye cyane). Ibisubizo: nta myobo ivamo nyuma y'amasaha 72.
●Ingano hagati y'ibice nyuma yo gusudira– 904L ifite karuboni nkeya (≤ 0.020%), ariko gufunga umuti birakenewe. Womic yakoze gufunga umuti wose ku bushyuhe bwa 1100°C, amazi azima. Ikizamini cya ASTM A262 Practice E cyaratsinze.
●Uburyo bwo gusudira mu murima– Itsinda rishinzwe kubungabunga uruganda ryari rikeneye WPS yujuje ibisabwa kugira ngo isanwe. Womic yatanze ama coupons 15 yo gusudira hamwe na WPS hakoreshejwe GTAW, ERNiCrMo-3 filler, ishyushya mbere ya 10-20°C, interpass ≤ 120°C, ikoreshwa ry'ubushyuhe ≤ 1.2 kJ/mm. Ama coupons yatsinze ikizamini cya RT, PT, na G28.
●Ibikoresho bijyanwa mu ruganda rw'ibinyabutabire rwo mu Budage– Imiyoboro yoherejwe iva i Shanghai ijya ku cyambu cya Hamburg, hanyuma ijyanwa mu modoka. TÜV Ubudage bwagenzuye imiyoboro i Hamburg. Toni 19 zose zatanzwe mu byumweru 10. Ipaki y'inyandiko (MTC 3.2, raporo z'ibizamini) yatanzwe mu buryo bw'ikoranabuhanga.
Ibisubizo:Imiyoboro mishya ya 904L yashyizweho mu gihe cy'ivugurura rya gatatu rya 2024. Nyuma y'amezi 12 ikora, igenzura ryagaragaje ko nta kwangirika gushoboka, nta mwobo, kandi nta gusohoka kw'amazi. Umukiriya yiteze imyaka irenga 15 (ugereranije n'imyaka 1.5 kuri 316L). Womic Steel ubu ni umucuruzi wujuje ibisabwa mu miyoboro ya aside sulfuriki y'uru ruganda.
Umuntu wo kuvugana nawe:
Urubuga: www.womicsteel.com
Imeri: sales@womicsteel.com
Terefone / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568
Womic Steel – Umufatanyabikorwa wawe wizeye w’imiyoboro ya ASTM B673 UNS N08904 ikoreshwa mu byuma bitagira umugese byo mu bwoko bwa aside sulfure na fosforike, sisitemu za FGD, gukonjesha amazi yo mu nyanja, ndetse no gutanga serivisi z’ubutabire ku isi yose.
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