1. Womic Steel: Ike Mmepụta na Ike Ụlọ Ọrụ
Womic Steel Group bụ ụlọ ọrụ mmepụta ihe na mbupụ ngwaahịa kachasị elu n'ụwa niile, nwere ihe karịrị afọ 20 nke ahụmịhe n'ịmepụta paịpụ alloy na-eguzogide nchara. Ụlọ ọrụ mmepụta paịpụ 904L pụrụ iche anyị na-eji ọtụtụ teknụzụ ịgbado ọkụ dị elu yana njikwa siri ike nke ntinye okpomọkụ na ọgwụgwọ okpomọkụ mgbe weld gasịrị:
● ERW (Electric Resistance Welding) Ahịrị:Maka dayameta site na 6.35mm ruo 610mm (1/4″ – 24″), ọkpụrụkpụ mgbidi site na 0.5mm ruo 12.7mm. Ịgbado ọkụ ugboro ugboro dị elu yana obere ntinye okpomọkụ (≤ 1.2 kJ/mm) iji zere nkewa nke ọdịnaya alloy dị elu. Ọ dị mma maka paịpụ 904L dị obere ruo ọkara dayameta.
●Ahịrị EFW (Ịgbado ọkụ eletrik):Maka dayameta site na 219mm ruo 1219mm (8″ – 48″), ọkpụrụkpụ mgbidi site na 4.0mm ruo 40mm. TIG (GTAW) mgbọrọgwụ ngafe nwere SAW jump pass, site na iji ígwè jump set (ERNiCrMo-3 ma ọ bụ ER385).
●Ahịrị LSAW / SAWL maka Alloy Dị Elu:Maka dayameta site na 406mm ruo 1219mm (16″ – 48″), ọkpụrụkpụ mgbidi ruo 40mm. Njikọta arc nke efere 904L a kpụkọrọ akpụkọ nwere ntinye okpomọkụ a na-achịkwa.
A na-eme ka ọkpọkọ 904L niile a kpara akpa na-ekpo ọkụ (ọgwụgwọ okpomọkụ) na 1050-1150°C, wee jiri mmiri kpụọ ya iji gbazee usoro nke abụọ ọ bụla ma weghachi ike nchara, wee jiri ngwakọta asịd pụrụ iche kpụọ ya ma chụpụ ya.
Asambodo Ogo na Nrubeisi Iwu:
●ISO 9001: 2015 Akwadoro
●PED 2014/68/EU (CE Mark) maka akụrụngwa nrụgide
●EN 10204 3.2 Asambodo nwere nkwenye nke ndị ọzọ (TÜV, BV, SGS, LR)
●Nnyocha nke Ndị Ọzọ (TPI) nke SGS, BV, ABS, DNV, TÜV kwadoro
●NACE MR0175 / ISO 15156 maka ọrụ mmiri ara ehi (H₂S) ma ọ bụrụ na achọrọ ya
●Koodu ụgbọ mmiri ASME na nke nrụgide (Nkebi nke VIII, Nkebi nke 1) ma ọ bụrụ na achọrọ ya
Womic Steel na-enye paịpụ 904L nke ejiri ígwè rụọ ọrụ na mba 30 n'ofe ụlọ ọrụ kemịkalụ, mmiri, na ndị dị n'ụsọ oké osimiri.
Mgbanwe Mmepụta:
●ERW: 6.35–610mm OD × 0.5–12.7mm WT × ≤ 12m
●EFW: 219–1219mm OD × 4.0–40mm WT × ≤ 12m (ogologo oge karịa ma ọ bụrụ na a rịọ ya)
●LSAW: 406–1219mm OD × 6.0–40mm WT × ≤ 18m
●Nhọrọ imecha: A na-ete ya na nke a na-apịpịa, nke a na-egbuke egbuke (maka obere ọkpọkọ)
2. ASTM B673 UNS N08904: Ihe mejupụtara ihe na njirimara arụmọrụ
UNS N08904 (904L) bụ ígwè anaghị agba nchara austenitic nke nwere nickel dị elu (23-28%), chromium dị elu (19-23%), molybdenum (4-5%), na ọla kọpa (1-2%). Mgbakwunye ọla kọpa ahụ na-enye ezigbo iguzogide acid ndị na-ebelata dị ka sulfuric na phosphoric acid. Molybdenum na chromium dị elu na-enye ezigbo iguzogide pitting na gburugburu chloride. A na-ejikarị 904L eme ihe dị ka ihe ọzọ dị ọnụ ala karịa alloys nickel n'ọnọdụ dị oke njọ.
Ihe mejupụtara kemịkalụ (Nyocha Ladle, pasent site na oke):
| Ihe | UNS N08904 (904L) | 316L (maka ntụnyere) |
| 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 | Nhazi nguzozi | Nhazi nguzozi |
Njirimara Mekaniki (Okpomọkụ Ụlọ, Ngwọta Ejiri Aka Mee):
| Akụ na ụba | UNS N08904 (904L) |
| Ike Mmepụta (nkezi, 0.2% nke mbelata) | 220 MPa (31,900 psi) |
| Ike nrụgide (nkeji) | 490 MPa (71,100 psi) |
| Ogologo (nkeji, nha 50mm) | Pasentị iri atọ na ise |
| Isi ike (kachasị) | 90 HRB |
Njirimara Anụ Ahụ:
Njupụta: 8.00 g/cm³
Modulu nke Mgbatị: 195 GPa (28.3 × 10⁶ psi)
Ọgbakọ okpomọkụ: 12.0 W/m·K na 100°
Ọnụọgụ nke Mgbasawanye Okpomọkụ: 15.4 × 10⁻⁶/°C (20-100°C)Nguzogide Nrụrụ:
Nọmba Nguzogide Pitting Dakọrọ (PREN) = Cr% + 3.3(Mo%) + 16(N%) ≈ 35-40 (vs 316L PREN 24-26)
Ezigbo iguzogide sulfuric acid n'ofe oke mkpokọta (ruo 90% na okpomọkụ dị ala)
Nguzogide dị egwu na phosphoric acid (usoro mmiri mmiri) nke nwere chlorides na fluorides
Nguzogide dị mma megide nsị na mmebi oghere na gburugburu chloride
Ezigbo nguzogide megide ire ere intergranular mgbe ịgbado ọkụ (carbon dị ala)
Ọ dabara adaba maka ọrụ utoojoo (NACE MR0175) yana ọgwụgwọ okpomọkụ kwesịrị ekwesị
Oke ire ere (ihe dịka ihe dị ka):
● Asịd sọlfọ (H₂SO₄): ruo 90% na 50°C; ruo 70% na 100°C
● Asịd Hydrochloric (HCl): a na-ebelata ya ka ọ ghara ịgbaze (< 5%) n'ọnọdụ okpomọkụ ụlọ
● Asịd phosphoric (H₃PO₄): dị mma ruo 85% na 100°C
● Asịdi Asịd: dị mma na njupụta niile
● Mmiri oké osimiri: dị mma nke ukwuu n'oge okpomọkụ ruru 50°C
3. Nrubeisi na Nrubeisi nke Oke na Ụkpụrụ
| ihe | Nkọwapụta |
| Ọkọlọtọ | ASTM B673 / ASME SB-673 (paịpụ a na-agbakọta) |
| Usoro Mmepụta | ERW, EFW, LSAW |
| Oke Dayameta Mpụta | ERW: 6.35 - 610mm; EFW/LSAW: 219 - 1219mm |
| Oke ọkpụrụkpụ mgbidi | ERW: 0.5 - 12.7mm; EFW/LSAW: 4.0 - 40mm |
| Oge Nhazi Oge | 5S, 10S, 40S (maka NPS 1/8″ – 48″) |
| Ogologo Ogologo | Ọkọlọtọ: 6m; agbatị: 12m, 18m, ruo 18m |
| Ọgwụgwụ Ọgwụgwụ | Ọgwụgwụ Dị larịị (PE), Ọgwụgwụ Beveled (BE) |
| Mmecha Elu | A na-ete ya na a na-akpọ ya nkụ, a na-ete ya nke ọma |
| Ndochi | OD: ±0.5% ma ọ bụ ±3.2mm; WT: ±12.5% (kwa ASTM B775); Ogologo: +50mm / -0mm |
4. Nha na nkọwapụta dị - ASTM B673 UNS N08904 Paịpụ ígwè anaghị agba nchara nke a na-agbaze agbaze (Nha ndị a họọrọ)
| NPS | OD (mm) | Usoro oge | WT (mm) | Ibu (kg/m) | Ogologo Ọkọlọtọ | Ngwa nkịtị |
| 1/2" | 21.3 | 10S | 2.11 | 1.00 | 6m | Usoro ọgwụ kemịkalụ |
| 3/4" | 26.7 | 10S | 2.11 | 1.28 | 6m | Ahịrị ngwa egwu |
| 1" | 33.4 | 10S | 2.77 | 2.09 | 6m | Nri asịd |
| 1-1/2" | 48.3 | 10S | 2.77 | 3.11 | 6m | Ahịrị asịd sọlfọ |
| 2" | 60.3 | 10S | 2.77 | 3.93 | 6m / 12m | Usoro usoro |
| 3" | 88.9 | 10S | 3.05 | 6.46 | 6m / 12m | Mbufe asịd |
| 4" | 114.3 | 10S | 3.05 | 8.37 | 6m / 12m | Asịd phosphoric |
| 6" | 168.3 | 10S | 3.40 | 13.8 | 6m / 12m | Mmiri oyi nke oké osimiri |
| 8″ | 219.1 | 10S | 3.76 | 20.0 | 12m | Ahịrị utoojoo dị n'ụsọ oké osimiri |
| 10″ | 273.0 | 10S | 4.19 | 27.8 | 12m | Ọwa FGD |
| 12" | 323.9 | 10S | 4.57 | 36.0 | 12m | Isi kemịkalụ |
| 16" | 406.4 | 10S | 4.78 | 47.4 | 12m | Dayameta buru ibu |
*Nha pụrụ iche dị n'èzí oke ndị a. Paịpụ 904L nke a kpara akpa chọrọ oge ndu dị ogologo karịa (opekempe ụbọchị 60) n'ihi na a pụrụ ịchọta mpempe akwụkwọ/efere pụrụ iche.*
5. Ụkpụrụ na Ọkwa Ndị Dị Oke Ọsọ nke Womic Steel mepụtara
| Ọkọlọtọ | Akara ígwè / Alloy | Ngwa nkịtị | Usoro ịgbado ọkụ |
| ASTM B673 | UNS N08904 (904L) | Asịd Sulfuric/phosphoric, mmiri mmiri | EFW/LSAW/ERW |
| ASTM B674 | UNS N08904 (enweghị nsogbu) | Ọkpọkọ nrụgide | - |
| ASTM B677 | UNS N08904 | Paịpụ enweghị ntụpọ | - |
| EN 10217-7 | 1.4539 (904L) | Ebumnuche nrụgide, oke austenitic | SAW/ERW |
| ASTM A312 | UNS N08367 (AL-6XN), S31254 (254 SMO) | Mmiri mmiri, FGD | EFW/LSAW |
Ojiji:Osisi asịd sọlfọ, mmepụta asịd phosphoric, sistemụ FGD, mmiri oyi (okpomọkụ dị elu), tankị kemịkalụ, ọrụ utoojoo dị n'ụsọ oké osimiri.
6. Usoro Mmepụta - Paịpụ ígwè anaghị agba nchara (ERW, EFW, LSAW)
Njikọta 904L chọrọ njikwa nke ọma nke ntinye okpomọkụ na ọgwụgwọ okpomọkụ mgbe njikọta ahụ gasịrị n'ihi na ọ nwere nnukwu ọdịnaya alloy. Ọla kọpa na molybdenum na-eme ka alloy ahụ nwee ike kewapụ ma ọ bụrụ na oyi dị nwayọ.
Usoro ERW (Ịgbado ọkụ eletrik) - Obere ruo ọkara dayameta (6.35–610mm OD):
●Nnyocha Ihe Ndị A Na-anaghị Arụ Ọrụ (Mpempe Akwụkwọ/Kọnịlụ):E gosipụtara na eriri 904L dị maka nhazi (Ni 23-28%, Cr 19-23%, Mo 4-5%, Cu 1-2%). Ogidi ọ bụla nwere nọmba okpomọkụ pụrụ iche.
●Ịkpọghe na Ịkwalite Ọkwa
●Ịkpụcha akụkụ ákwà mgbochi
●Ịkpụ:Mpịakọta na-aga n'ihu na-akpụ.
●Ịgbado ọkụ ugboro ugboro:Ntinye okpomọkụ dị ala (≤ 1.2 kJ/mm) iji zere nkewa Cu/Mo. Ịgbado ọkụ n'ime ikuku na-adịghị arụ ọrụ.
●Ịdọkọta ákwà:Mkpọchi mmiri na-esochi ya, wee jiri mmiri kpụọ ya.
●Nhazi na Nhazi
●Ịcha ruo n'ogologo
●NDT:Nnwale ugbu a nke Eddy (100%) + nhọrọ UT.
●Mkpọchi Ngwọta (Paịpụ zuru oke):1050-1150°C, mmiri na-agbaze. Ọ dị mkpa ka e mee ka usoro nke abụọ gbazee.
●Nnwale Hydrostatic
●Ịhịa aka n'ahụ na ịta nri(mgwakọta pụrụ iche maka ihe mejupụtara ya dị elu)
●PMI (XRF) na nlele siri ike
●Nnyocha na Akara Ikpeazụ
Usoro EFW (Ịgbado ọkụ eletrik) - Dayameta buru ibu (219–1219mm OD, 4.0–40mm WT):
●Nkwadebe efere:Efere 904L, akụkụ ya dị beveled (bevel X).
●Ịkpụ Mpịakọta
●Ịkwado Tak
●Mgbọrọgwụ TIG (GTAW):Ihe na-emeju ihe (ERNiCrMo-3 ma ọ bụ ER385), gas na-akwado argon.
●Ihe ndị e ji ejupụta na okpu SAW mee:Ntinye okpomọkụ ≤ 1.5 kJ/mm, okpomọkụ interpass ≤ 120°C. Nnyefe pụrụ iche dị ala nke sọlfọ.
●Njikọta Dị n'ime
●Nnwale Rediografik 100% + UT(kwa ASTM B775)
●Ngwọta Mbelata:Ọgwụgwọ okpomọkụ zuru oke nke ọkpọkọ (1050-1150°C), ihe na-eme ka mmiri kwụsị.
●Ịhịa aka n'ahụ na ịta nri
●Nnwale Hydrostatic
●Nnyocha PMI na Akụkụ
●Akara
Usoro LSAW maka Alloy Dị Elu - Dayameta buru ibu nke ukwuu (406–1219mm OD, 6.0–40mm WT):
● UOE ma ọ bụ JCOE na-akpụ site na efere 904L
● Ịgbado ọkụ SAW nke nwere akụkụ abụọ yana njikwa ntinye okpomọkụ siri ike
● Ịkwanye ngwọta zuru oke mgbe ịgbado ọkụ gasịrị
Isi Ihe Njikwa Dị Mkpa Maka Ịgbado Ọkụ 904L:
● Ntinye okpomọkụ: ≤ 1.5 kJ/mm (ihe mgbaru ọsọ ≤ 1.2 kJ/mm)
● Okpomọkụ nke gafere: ≤ 120°
● Gas nchekwa: 100% Argon nwere ihe na-enweta oxygen
● Ịmepụta ihe ngwọta: 1050-1150°C, imenyụ mmiri - ọ dị mkpa
● Ịkpọ nkụ: Ngwakọta asịd pụrụ iche maka ihe ndị dị na chromium/nickel dị elu
7. Usoro Njikwa na Nnwale Ogo maka ASTM B673 UNS N08904 Pipe ígwè anaghị agba nchara nke a na-agbaze agbaze
| Ogbo egwuregwu | Usoro Nnyocha | Ebumnuche |
| Akụrụngwa | Nyocha Kemịkalụ (OES ma ọ bụ ICP) | Nyochaa N08904 (Ni 23-28%, Cr 19-23%, Mo 4-5%, Cu 1-2%) |
| Akụrụngwa | Nnwale Nrụgide | Mmepụta ≥ 220 MPa, Nrụgide ≥ 490 MPa |
| Akụrụngwa | Nnwale Nrụgide (ASTM G28) | Nguzogide mmebi dị n'etiti granular (maka ọrụ acid) |
| Akụrụngwa | Ngụkọta PREN | Hụ na PREN ≥ 35 |
| N'ime usoro | Nlekota Ntinye Okpomọkụ | ≤ 1.5 kJ/mm |
| N'ime usoro | Okpomọkụ nkewa gafere | ≤ 120°C |
| Njikọta (ERW) | Eddy Current (100%) | iguzosi ike n'ezi ihe nke njikọta weld |
| Njikọta (EFW/LSAW) | 100% UT (ma ọ bụ PAUT) | Chọpụta ntụpọ weld |
| Njikọta (EFW/LSAW) | RT (10-100% kwa nkọwapụta) | Ogo ịgbado ọkụ |
| Weld | Agba Na-abanye n'ime (PT) | Mgbawa elu |
| Mgbe Ngwọta ahụ gasịrị | Ule Ike | ≤ 90 HRB |
| Mgbe Ngwọta ahụ gasịrị | Sistemụ obere (ASTM E407) | Enweghị sigma, chi, ma ọ bụ usoro nke abụọ |
| Paịpụ Emechara | Nnwale Hydrostatic | Iguzosi ike n'ezi nrụgide |
| Paịpụ Emechara | PMI (XRF) | Kwenye ọkwa (Ni, Cr, Mo, Cu) |
| Paịpụ Emechara | Nnwale Nrụgide Pitting (ASTM G48) | Nyochaa iguzogide pitting (ọ bụrụ na akọwapụtara ya) |
| Paịpụ Emechara | Ihe a na-ahụ anya na ihe a na-akara | Ịchọpụta ihe dị na ya |
Ule Nhọrọ maka Ọrụ Dị Mkpa:
● ASTM G28 Practice A (ferric sulfate-sulfuric acid) maka ire ere dị n'etiti granular
● Nnwale ọkpọkọ ASTM G48 na FeCl₃ (6% na 40°C) maka ọrụ mmiri mmiri
● Nnwale HIC/SSC maka ọrụ utoojoo (NACE TM0284, TM0177)
● Nnwale ọla kọpa sulfate maka ibelata iguzogide acid
8. Ngwa Ndị Isi – ASTM B673 UNS N08904 Paịpụ ígwè anaghị agba nchara nke a na-agbakọta agbakọta
●Osisi sọlfọ acid:Ijikwa asịd a kpọkọtara ọnụ (90-98% H₂SO₄) na okpomọkụ dị mma, gwakọta asịd a gwakọtara agwakọta (5-10%) na okpomọkụ dị elu, na ọkpọkọ oyi acid. Na-anọchi 316L na 317L.
●Mmepụta phosphoric acid (usoro mmiri mmiri):Ihe na-ekupụ mmiri, ihe na-eme ka ihe dị jụụ, na eriri mbufe na-ejikwa phosphoric acid na chlorides na fluorides. 904L bụ ọkọlọtọ maka phosphoric acid mmiri.
●Ọwa mmiri ndị na-amịkọrọ ihe na-eme ka ikuku gas ghara ịdị ọcha (FGD):N'okpuru mmiri nke ihe ndị na-amịkọrọ mmiri ebe gas acidic jupụtara na chloride dị. A na-eji 904L eme ihe maka ọkpọkọ mmiri na ihe mkpuchi ebe 317L ezughi oke.
●Sistemụ oyi mmiri n'oké osimiri (okpomọkụ dị elu):Sistemụ mmiri oyi nke dị n'ụsọ oké osimiri ebe okpomọkụ mmiri dị n'oké osimiri karịrị 40°C. 904L na-eguzogide ịdaba n'ọnọdụ okpomọkụ ebe 316L na ọbụna super duplex nwere ike ịda.
●Tankị kemịkalụ (IMO Type II):Ọkpọkọ ibu maka kemịkalụ siri ike dịka sọlfọlik, phosphoric acid, na asịd organic. Ọtụtụ ụlọ ọrụ mbupu kemịkalụ kwadoro 904L.
●Ọrụ utoojoo dị n'ụsọ oké osimiri:Mmepụta mmanụ na gas nwere H₂S dị elu na chloride dị elu, ọkachasị ebe okpomọkụ dị obere mana mkpa nchara karịrị duplex.
●Osisi pulp na akwụkwọ ọcha:Ọrụ chlorine dioxide na sodium hypochlorite ebe 317L ezughi oke.
●Ngwa ọgwụ:Ihe ndị na-eme ka ihe na-arụ ọrụ na ọkpọkọ maka usoro ndị metụtara asịd siri ike.
●Ngwa eji agba ákwà:Igwe eji agba agba na-ejikwa ihe e ji agba agba chlorine mee.
●Nhazi nri:Mmiri nnu dị elu nke nwere chlorine, ihe ọṅụṅụ pickle, na ihe oriri acidic.
9. Nkwakọ ngwaahịa na Mbupu - JIS A5525 SKK490 SSAW Steel Pipe Pile
Nkwakọ ngwaahịa:
●Nchedo mgbochi ire ere:Mkpuchi plastik ma ọ bụ akwụkwọ VCI. Enweghị ihe fọdụrụ n'ime mmanụ maka ọrụ kemịkalụ.
●Mkpọchi njedebe:Mkpuchi plastik dị arọ (nke nwere agba - nke a na-ejikarị acha anụnụ anụnụ maka 904L).
●Njikọta (obere dayameta):A na-ekekọta paịpụ ọ bụla n'otu n'otu, wee jiri eriri ndị na-abụghị ígwè kee ya.
●Nkwakọ ngwaahịa nkeonwe (Diameta buru ibu):Ihe mkpuchi ihe nkiri plastik nwere mgbaaka ụfụfụ.
●Igbe osisimaka ọrụ kemịkalụ dị mkpa na ọrụ ndị dị n'èzí.
Mbupu:
Akpa maka ≤ 610mm, nnukwu ihe maka dayameta buru ibu.
Akwụkwọ:MTC 3.1/3.2, akụkọ nnwale mmiri, akụkọ UT/RT, akụkọ PMI, akụkọ nnwale nchara (ọ bụrụ na akọwapụtara ya), akụkọ nha, ndepụta nkwakọ ngwaahịa, COO. Nleba anya zuru oke site na nọmba okpomọkụ ruo na paịpụ emechara.
10. Uru na Ajụjụ Ndị A Na-ajụkarị Banyere Womic Steel – ASTM B673 UNS N08904 Welded Pipe
Gịnị kpatara ya na Womic Steel ji arụ ọrụ maka 904L Welded Pipe?
● Oke nha zuru oke: ERW 1/4″ – 24″, EFW/LSAW 8″ – 48″.
● Ịmepụta ihe ngwọta zuru oke mgbe ịgbado ọkụ (1050-1150°C, imenyụ mmiri).
● Nnwale nchara n'ime ụlọ (ASTM G28, G48) maka ọrụ acid na mmiri mmiri.
● PREN ≥ 35 - ezigbo nguzogide olulu.
● Oge ndị na-eduga asọmpi: ụbọchị 60-75 maka ERW, ụbọchị 75-90 maka EFW/LSAW.
● Asambodo zuru ụwa ọnụ: ISO 9001, PED (CE), EN 10204 Ụdị 3.2.
Ajụjụ Ndị A Na-ajụkarị (Ajụjụ Ndị A Na-ajụkarị) – ASTM B673 UNS N08904 Pipe Welded
Ajụjụ: Gịnị bụ ihe dị iche n'etiti 904L na 316L?
A: 904L nwere nickel dị elu karịa (23-28% vs 10-14%), chromium dị elu karịa (19-23% vs 16-18%), molybdenum dị elu karịa (4-5% vs 2-3%), yana ọla kọpa agbakwunyere (1-2%). Nke a na-enye 904L iguzogide acid sulfuric, phosphoric acid, na pitting in chlorides ka mma. PREN bụ 35-40 vs 24-26 maka 316L. 904L dị ihe dị ka okpukpu atọ na anọ nke ọnụ ahịa 316L ma a na-eji ya ebe 316L dara ada.
Q: 904L ọ dị mma maka ọrụ mmiri mmiri?
A: Ee. 904L nwere ezigbo iguzogide nsị na mmebi oghere n'ime mmiri oké osimiri ruo okpomọkụ dị ihe dịka 50°C. Maka okpomọkụ dị elu ma ọ bụ ọnọdụ na-adịghị agbanwe agbanwe, enwere ike ịchọ ihe mgbakwunye super duplex ma ọ bụ nickel. A na-ejikarị 904L eme ihe maka sistemụ oyi mmiri ebe 316L adaala.
Q: Kedu okpomọkụ kachasị elu maka 904L na sọlfọlik acid?
A: Na 50-70% H₂SO₄, enwere ike iji 904L ruo 100°C. Na 90-96% H₂SO₄, belata na 50-60°C. Maka okpomọkụ dị elu ma ọ bụ acid siri ike karị, a chọrọ alloy nickel dị elu (Alloy 20, Alloy 625, Alloy C-276). Lelee chaatị corrosion mgbe niile maka ọnọdụ ụfọdụ.
Q: 904L ọ chọrọ ka a na-agbaze mmiri mgbe a gbanyere ya ọkụ?
A: Ee, dịka ASTM B673 si kwuo. 904L nwere ike ịmepụta usoro nke abụọ (sigma, chi) na weld HAZ ma ọ bụrụ na oyi adịghị nwayọ. Ịmepụta ngwọta na 1050-1150°C wee jiri mmiri kpụchaa ya na-agbaze usoro ndị a ma weghachi ike nchara. Womic na-arụ ọrụ nhazi zuru oke na paịpụ 904L niile a kpara akpa. Maka ịgbado ọkụ ubi, jiri obere ntinye okpomọkụ ma tụlee nhazi ngwọta mgbe weld gasịrị ma ọ bụrụ na o kwere mee.
Q: Kedu ihe eji eme ihe mkpuchi ọkụ ka akwadoro maka 904L?
A: A na-atụ aro AWS A5.14 ERNiCrMo-3 (Inconel 625) ma ọ bụ ER385. A na-ejikarị ERNiCrMo-3 eme ihe ma na-enye ezigbo iguzogide nchara nke dabara na 904L. ER385 bụ ihe na-eme ka ihe dị na 904L dakọtara. Womic na-eji ERNiCrMo-3 eme ihe maka usoro EFW.
Q: 904L ọ dị mma maka ọrụ mmiri ara ehi (H₂S)?
A: Ee, 904L ruru eru dịka NACE MR0175/ISO 15156 si kwuo maka ọrụ utoojoo yana nrụgide H₂S nke ruru 1 bar (15 psi) n'ogo siri ike ụfọdụ. A na-ejikarị ya eme ihe n'ubi utoojoo nke ọma ebe duplex anaghị ezu oke n'ihi oke chlorides.
Q: Kedu oge ndu nkịtị maka ọkpọkọ 904L a na-eji agba ígwè?
A: Ụbọchị 60-75 maka ERW (dayameta obere ruo ọkara), ụbọchị 75-90 maka EFW/LSAW (dayameta ukwu). Oge ndu na-adị ogologo karịa maka ígwè anaghị agba nchara nkịtị n'ihi ihe pụrụ iche a na-esi enweta alloy strip/plate (ọtụtụ mgbe izu 12-16 site na igwe mmepụta ihe). Nnyocha nke ndị ọzọ na-agbakwụnye ụbọchị 7-14.
Q: Enwere ike iji 904L mee ihe maka sistemụ mmiri dị ọcha nke ukwuu?
A: Ee, mana a na-akọwakarị ya nke ọma. Maka mmiri dị ọcha nke ukwuu (RO, DI, WFI), 316L zuru oke ma dịkwa ọnụ ala karịa. 904L dị maka ọnọdụ kemịkalụ siri ike ma ọ bụ nke nwere chloride dị elu.
Ntụaka Ọrụ - Mgbanwe Paịpụ Mmiri Oyi nke Osisi Sulfuric nke Europe
Obodo:Germany (North Rhine-Westphalia, ihe mgbagwoju anya kemịkalụ)
Ọkọlọtọ na ọkwa:ASTM B673 UNS N08904 (904L) - ọkpọkọ a gbanyere agbaze
Akụkụ na Ọnụọgụ:
● OD 88.9mm (3″) × Usoro 10S (3.05mm WT) – mita 600 (ihe dị ka tọn 5) – Usoro ERW
● OD 114.3mm (4″) × Usoro 10S (3.05mm WT) – mita 500 (ihe dị ka tọn 6) – Usoro ERW
● OD 168.3mm (6″) × Usoro 10S (3.40mm WT) – mita 300 (ihe dị ka tọn 4) – Usoro EFW
● OD 219.1mm (8″) × Usoro 10S (3.76mm WT) – mita 200 (ihe dị ka tọn 4) – Usoro EFW
Ngụkọta:Mita 1,600, ihe dị ka tọn 19
Nkọwapụta:Ngwakọta ASTM B673 UNS N08904 a gwakọtara agwakọta ma gwerie ya, e gwerie ya. Nnwale Hydrostatic na nrụgide imewe 1.5 × (mepụta 1.2 MPa). 100% UT maka paịpụ EFW, ọkụ eletrik maka ERW. PMI na paịpụ ọ bụla. Nnwale nchara dị mkpa dịka ASTM G28 Practice A (ferric sulfate-sulfuric acid) si dị - ọnụego nchara < 5 mpy (enwetara 2-3 mpy). Nnwale nchara dị ka ASTM G48 Method A si dị (6% FeCl₃, awa 24 na 40°C) - enweghị olulu. Nnwale nchara dị n'etiti granular kwa ASTM A262 Practice E (gafere). Nnwale nke ndị ọzọ site na TÜV Germany.
Ngwa:Mgbanwe nke ọkpọkọ oyi acid na ahịrị mbufe ndị metụtara ya n'ime ụlọ ọrụ mmepụtaghachi acid sulfuric. Paịpụ ahụ na-ejikwa acid sulfuric ọkụ (85-93% H₂SO₄) na 70-90°C site na ụlọ elu nnabata gaa na ihe na-ekpo ọkụ acid. Paịpụ 316L gara aga dara ada mgbe ọnwa 18 gachara n'ihi nchara na olulu. A họọrọ 904L maka iguzogide acid sulfuric dị elu na okpomọkụ dị elu.
Ihe Ịma Aka na Ngwọta Teknụzụ:
●Njehie na asịd sọlfọm a chịkọtara ọkụ (85-93%, 70-90°C)– 316L na-emebi ihe n'ọnụego karịrị 50 mpy n'ọnọdụ ndị a. 904L nwere nickel, chromium, molybdenum, na ọla kọpa ya dị elu na-enye ọnụego nchara < 5 mpy. Nnwale ASTM G28 Practice A nke Womic mere na ihe atụ ígwè na njikọta. Ọnụego nchara: ígwè ntọala 2.1 mpy, njikọta 2.8 mpy - n'okpuru oke 5 mpy. Onye ahịa kwadoro ya.
●Nguzogide nchara ígwè Weld– Ebe a na-agbakọta ihe bụ ebe kachasị dị mfe. Womic jiri obere okpomọkụ (≤ 1.2 kJ/mm) na ihe na-eme ka ihe dị n'ime ERNiCrMo-3. Ihe nlele ịgbado ọkụ gafere ule G28 na ọnụego nchara 2.8-3.2 mpy. Microstructure egosighi mmiri ozuzo nke abụọ.
●Ịkwalite iguzogide na okpomọkụ dị elu– Asịd ahụ nwere ihe ndị na-egosi na ọ bụ mmiri ka a na-esi enweta chloride (site na mmiri). PREN 35-40 nke 904L na-enye ike iguzogide olulu. Womic mere ule olulu G48 na 40°C (ọ dị njọ karịa okpomọkụ ọrụ 70°C? N'ezie, okpomọkụ nnwale 40°C dị ala, mana FeCl₃ na-eme ihe ike). Nsonaazụ: enweghị olulu mgbe awa 72 gachara.
●Nchikota dị n'etiti mgbe ịgbado ọkụ– 904L nwere obere carbon (≤ 0.020%), mana a ka chọrọ ka a na-eme ka mmiri ghara ịdị ọcha. Womic mere ka mmiri ghara ịdị ọcha nke ọma na 1100°C, wee kụchaa mmiri. Nnwale ASTM A262 Practice E gafere.
●Usoro ịgbado ọkụ n'ọhịa– Ndị otu na-ahụ maka mmezi ụlọ ọrụ chọrọ WPS ruru eru maka ndozi. Womic nyere WPS kupọnu 15 nke weld site na iji ihe nzacha GTAW, ERNiCrMo-3, kpoo ọkụ tupu oge eruo 10-20°C, interpass ≤ 120°C, ntinye okpomọkụ ≤ 1.2 kJ/mm. Kupọnu gafere ule RT, PT, na G28.
●Lọjistik gaa ụlọ ọrụ kemịkalụ nke Germany– E si Shanghai bufee paịpụ gaa n'ọdụ ụgbọ mmiri Hamburg, wee buru gwongworo gaa ebe ahụ. TÜV Germany lere paịpụ na Hamburg. E bufere tọn 19 niile n'ime izu iri. E bufere ngwugwu akwụkwọ (MTC 3.2, akụkọ nnwale) na eletrọniki.
Nsonaazụ:E tinyere paịpụ 904L ọhụrụ n'oge nhazi nke atọ nke afọ 2024. Mgbe ọnwa iri na abụọ nke ọrụ gasịrị, nyocha ahụ egosighi mmebi a na-apụghị ịchọpụta, enweghị olulu mmiri, ọ dịghịkwa ntapu mmiri. Onye ahịa na-atụ anya na ọrụ ya ga-adịru afọ 15+ (ma e jiri ya tụnyere afọ 1.5 maka 316L). Womic Steel bụzi onye na-ebubata paịpụ sulfuric acid nke ụlọ ọrụ kemịkalụ a.
Kpọtụrụ:
Weebụsaịtị: www.womicsteel.com
Ozi ịntanetị: sales@womicsteel.com
Ekwentị / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568
Womic Steel – Onye mmekọ gị a pụrụ ịtụkwasị obi maka ASTM B673 UNS N08904 ọkpọkọ ígwè anaghị agba nchara nke ejiri ígwè rụọ maka osisi sulfuric na phosphoric acid, sistemu FGD, mmiri oyi, na ọrụ kemịkalụ siri ike n'ụwa niile.
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