1. Birta Womic: Awoodaha Wax Soo Saarka & Xoogga Shirkadda
Womic Steel Group waa shirkad soo saare heer sare ah iyo dhoofiye caalami ah oo leh in ka badan 20 sano oo khibrad u leh soo saarista tuubooyinka daxalka u adkaysta daxalka. Xaruntayada wax soo saarka tuubooyinka alxanka ee gaarka ah ee 904L waxay isticmaashaa teknoolojiyado alxan oo horumarsan oo badan iyadoo si adag loo xakameynayo gelinta kulaylka iyo daaweynta kulaylka ka dib alxanka:
● Khadka ERW (Alxanka iska caabbinta korontada):Dhexroorka laga bilaabo 6.35mm ilaa 610mm (1/4″ – 24″), dhumucda derbiga waa 0.5mm ilaa 12.7mm. Alxanka soo noqnoqda oo leh kuleyl hooseeya (≤ 1.2 kJ/mm) si looga fogaado kala soocidda walxaha daawaha sare leh. Ku habboon tuubooyinka 904L ee dhexroorkoodu yar yahay ilaa dhexdhexaadka ah.
●Khadka EFW (Alxanka Isku-dhafka Korontada):Dhexroorka laga bilaabo 219mm ilaa 1219mm (8″ – 48″), dhumucda derbiga waa 4.0mm ilaa 40mm. TIG (GTAW) oo leh marinnada buuxinta SAW, iyadoo la isticmaalayo bir buuxin oo isku mid ah (ERNiCrMo-3 ama ER385).
●Khadka LSAW / SAWL ee Daawaha Sare:Dhexroorka laga bilaabo 406mm ilaa 1219mm (16″ – 48″), dhumucda derbiga ilaa 40mm. Alxanka qaansada ee ku dhex jira saxannada 904L ee la duubay oo leh kuleyl la xakameeyey.
Dhammaan tuubooyinka alxanka leh ee 904L waxaa lagu sameeyaa daadinta xalka (kuleylka) heerkul ah 1050-1150°C ka dibna waxaa lagu damiyaa biyaha si loo milo marxaladaha labaad oo loo soo celiyo iska caabbinta daxalka, ka dibna waxaa lagu shubaa oo lagu shubaa isku-darka aashitada gaarka ah.
Shahaadooyinka Tayada & U Hoggaansanaanta Sharciyeynta:
●ISO 9001: 2015 Shahaado haysta
●PED 2014/68/EU (Calaamaynta CE) ee qalabka cadaadiska
●EN 10204 3.2 Shahaadada oo leh xaqiijin dhinac saddexaad (TÜV, BV, SGS, LR)
●Kormeerka Dhinac Saddexaad (TPI) oo ay ansixisay SGS, BV, ABS, DNV, TÜV
●NACE MR0175 / ISO 15156 oo loogu talagalay adeegga dhanaan (H₂S) marka la codsado
●Xeerka Maraakiibta Cadaadiska iyo Kuleylka ASME (Qaybta VIII, Qaybta 1) marka la codsado
Womic Steel waxay siisaa tuubooyin bir ah oo 904L ah in ka badan 30 waddan warshadaha kiimikada, badda, iyo kuwa badda.
Dabacsanaanta Wax-soo-saarka:
●ERW: 6.35–610mm OD × 0.5–12.7mm WT × ≤ 12m
●EFW: 219–1219mm OD × 4.0–40mm WT × ≤ 12m (ka dheer marka la codsado)
●LSAW: 406–1219mm OD × 6.0–40mm WT × ≤ 18m
●Xulashooyinka dhammaystirka: La qaboojiyey oo la miiray, oo dhalaalaya oo la qaboojiyey (tuubo yar)
2. ASTM B673 UNS N08904: Qaab-dhismeedka Agabka & Astaamaha Waxqabadka
UNS N08904 (904L) waa bir aan miridh lahayn oo aad u austenitic ah oo leh nikkel sare (23-28%), chromium sare (19-23%), molybdenum (4-5%), iyo naxaas (1-2%). Ku darista naxaasta waxay bixisaa iska caabin heer sare ah oo ku wajahan asiidhyada yareeya sida sulfuric iyo fosforic acid. Molybdenum sare iyo chromium waxay bixiyaan iska caabin aad u fiican oo ku saabsan meelaha koloriin. 904L waxaa badanaa loo isticmaalaa beddel kharash-ool ah oo loogu talagalay walxaha nikkel ee xaaladaha dhexdhexaadka ah ee gardarrada leh.
Halabuurka Kiimikada (Falanqaynta Ladle, boqolkiiba cuf ahaan):
| Walax | UNS N08904 (904L) | 316L (isbarbardhigga) |
| 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 | Dheelitirnaan | Dheelitirnaan |
Sifooyinka Farsamada (Heerkulka Qolka, Xalka la isku daray):
| Hantida | UNS N08904 (904L) |
| Xoogga Wax Soo Saarka (ugu yaraan, 0.2% ka-dhimis) | 220 MPa (31,900 psi) |
| Xoogga Tijaabada (daqiiqad) | 490 MPa (71,100 psi) |
| Dheereynta (ugu yaraan, cabbirka 50mm) | 35% |
| Adkaanta (ugu badnaan) | 90 HRB |
Sifooyinka Jirka:
Cufnaanta: 8.00 g/cm³
Modulus of Relasticity: 195 GPa (28.3 × 10⁶ psi)
Qaboojinta Kulaylka: 12.0 W/m·K 100°
Isugeynta Ballaarinta Kulaylka: 15.4 × 10⁻⁶/°C (20-100°C)Iska caabbinta Daxalka:
Nambarka u dhigma iska caabbinta tuunbada (PREN) = Cr% + 3.3(Mo%) + 16(N%) ≈ 35-40 (vs 316L PREN 24-26)
Iska caabin aad u fiican oo ku saabsan aashitada sulfuric ee ku baahsan heer ballaaran oo uruurin ah (ilaa 90% heerkul dhexdhexaad ah)
Iska caabin aad u wanaagsan oo ku saabsan fosfoorasyada (habka qoyan) oo ay ku jiraan chlorides iyo fluorides
Iska caabin aad u fiican oo ku saabsan daloolinta iyo daxalka daloolka ee deegaannada chloride
Iska caabin wanaagsan oo ku wajahan daxalka intergranular ka dib alxanka (kaarboon yar)
Ku habboon adeeg dhanaan (NACE MR0175) oo leh daaweyn kul oo habboon
Xadka Daxalka (Qiyaas ahaan):
● Aashitada Sulfuric (H₂SO₄): ilaa 90% heerkul ah 50°C; ilaa 70% heerkul ah 100°C
● Aashitada Haydaroklorik (HCl): waxay ku xaddidan tahay inay milmaan (< 5%) heerkulka qolka
● Aashitada Fosfooriga (H₃PO₄): aad u fiican ilaa 85% heerkul ah 100°C
● Asiidh Acetic ah: aad u fiican dhammaan fiirsashada
● Biyaha badda: aad bay u fiican yihiin heerkul ilaa 50°C ah
3. U hoggaansanaanta Heerka Cabbirka iyo Heerarka
| Shay | Faahfaahinta |
| Heerka Caadiga ah | ASTM B673 / ASME SB-673 (tuubo alxan leh) |
| Habraacyada Wax Soo Saarka | ERW, EFW, LSAW |
| Kala duwanaanshaha Dhexroorka Dibadda | ERW: 6.35 - 610mm; EFW/LSAW: 219 - 1219mm |
| Kala duwanaanshaha Dhumucda Darbiga | ERW: 0.5 - 12.7mm; EFW/LSAW: 4.0 - 40mm |
| Jadwalka Kala Duwan | 5S, 10S, 40S (loogu talagalay NPS 1/8″ – 48″) |
| Kala Duwanaanta Dhererka | Heerka: 6m; La dheereeyay: 12m, 18m, ilaa 18m |
| Dhammaadka Dhammaadka | Dhamaadka Caadiga ah (PE), Dhamaadka La Jaray (BE) |
| Dhammaadka Dusha Sare | La shiiday & la shiiday, la shiiday oo dhalaalaya |
| Dulqaadka | OD: ±0.5% ama ±3.2mm; WT: ±12.5% (sida ASTM B775 oo kale); Dhererka: +50mm / -0mm |
4. Cabbirrada iyo Tilmaamaha La Heli Karo – ASTM B673 UNS N08904 Tuubbo Bir ah oo aan Lakab lahayn oo la alxamay (Cabbirrada Caadiga ah ee la Xushay)
| NPS | OD (mm) | Jadwalka | WT (mm) | Miisaanka (kg/m) | Dhererka Caadiga ah | Codsiga Caadiga ah |
| 1/2" | 21.3 | 10S | 2.11 | 1.00 | 6m | Qiyaasta kiimikada |
| 3/4" | 26.7 | 10S | 2.11 | 1.28 | 6m | Khadadka qalabka |
| 1" | 33.4 | 10S | 2.77 | 2.09 | 6m | Quudinta aashitada |
| 1-1/2" | 48.3 | 10S | 2.77 | 3.11 | 6m | Khadka aashitada sulfuric |
| 2" | 60.3 | 10S | 2.77 | 3.93 | 6m / 12m | Khadka Hawsha |
| 3" | 88.9 | 10S | 3.05 | 6.46 | 6m / 12m | Wareejinta aashitada |
| 4" | 114.3 | 10S | 3.05 | 8.37 | 6m / 12m | Aashitada Fosfooriga |
| 6" | 168.3 | 10S | 3.40 | 13.8 | 6m / 12m | Qaboojinta biyaha badda |
| 8" | 219.1 | 10S | 3.76 | 20.0 | 12m | Khadka dhanaan ee xeebta |
| 10″ | 273.0 | 10S | 4.19 | 27.8 | 12m | Barkadda FGD |
| 12" | 323.9 | 10S | 4.57 | 36.0 | 12m | Kiimikada ugu muhiimsan |
| 16" | 406.4 | 10S | 4.78 | 47.4 | 12m | Dhexroor weyn |
* Cabbirrada gaarka ah ee ka baxsan heerarkan ayaa la heli karaa. Tuubooyinka alxanka 904L waxay u baahan yihiin waqti dheer oo rasaas ah (ugu yaraan 60 maalmood) sababtoo ah soo saarista xariijinta/saxanka gaarka ah.*
5. Heerarka iyo Darajooyinka Caadiga ah ee Super Austenitic oo ay soo saartay Womic Steel
| Heerka Caadiga ah | Darajooyinka Birta / Daawaha | Codsiga Caadiga ah | Habka Alxanka |
| ASTM B673 | UNS N08904 (904L) | Sulfuric/phosphoric asiidh, biyaha badda | EFW/LSAW/ERW |
| ASTM B674 | UNS N08904 (aan tolnayn) | Tuubada cadaadiska | - |
| ASTM B677 | UNS N08904 | Tuubo aan kala go 'lahayn | - |
| EN 10217-7 | 1.4539 (904L) | Ujeeddooyinka cadaadiska, austenitic aad u sarreeya | SAW/ERW |
| ASTM A312 | UNS N08367 (AL-6XN), S31254 (254 SMO) | Biyaha Badda, FGD | EFW/LSAW |
Isticmaalka:Warshadaha aashitada sulfuric, wax soo saarka aashitada fosfoorik, nidaamyada FGD, qaboojinta biyaha badda (heerkulka sare), booyadaha kiimikada, adeegga dhanaan ee badda.
6. Habka Wax Soo Saarka - Tuubooyinka Birta Aan Lahayn ee Alxanka leh (ERW, EFW, LSAW)
Alxanka 904L wuxuu u baahan yahay xakameyn taxaddar leh oo ku saabsan gelinta kulaylka iyo daaweynta kulaylka ka dib alxanka sababtoo ah waxa ku jira daawaha oo sarreeya. Naxaasta iyo molybdenum waxay ka dhigaan daawaha mid u nugul kala soocidda haddii qaboojintu aad u gaabiso.
Habka ERW (Alxanka iska caabbinta korontada) - Dhexroor yar ilaa dhexdhexaad ah (6.35–610mm OD):
●Kormeerka Walxaha Ceeriin (Xariijin/Galgariir):Xarig 904L ah ayaa la xaqiijiyay inuu ka kooban yahay (Ni 23-28%, Cr 19-23%, Mo 4-5%, Cu 1-2%). Muraayad kastaa waxay leedahay lambar kulayl oo gaar ah.
●Furitaanka iyo Simanka
●Jarista Cidhifka Xarigga
●Samaynta:Samaynta duub joogto ah.
●Alxanka Soo Noqnoqda Sare:Kuleyl hooseeya (≤ 1.2 kJ/mm) si looga fogaado kala soocidda Cu/Mo. Alxanka jawi aan firfircoonayn.
●Xididdada tolida:Daadinta kicinta oo ay ku xigto daminta biyaha.
●Cabbirka iyo Toosinta
●Goynta Dhererka
●NDT:Tijaabada hadda jirta ee Eddy (100%) + UT ikhtiyaari ah.
●Qaboojinta Xalka (Tuubo Buuxa):1050-1150°C, biyaha oo damiya. Waa waajib in la milmo marxaladaha labaad.
●Imtixaanka Hydrostatic-ka
●Qajaar iyo Neefsasho(asiidh isku dhafan oo gaar ah oo loogu talagalay daawaha sare)
●Hubinta PMI (XRF) & Adkaanta
●Kormeerka Kama Dambeysta ah iyo Calaamadaynta
Habka EFW (Alxanka Isku-dhafka Korontada) - Dhexroorka Weyn (219–1219mm OD, 4.0–40mm WT):
●Diyaarinta Saxanka:Saxan 904L ah, geesaha godan (X bevel).
●Samaynta Duubka
●Alxanka Tack
●Tigidhka Rootka ee TIG (GTAW):Buuxiye isku mid ah (ERNiCrMo-3 ama ER385), gaas argon ah oo gadaal u taagan.
●Buuxinta iyo Kaarka SAW:Kuleylka la geliyo ≤ 1.5 kJ/mm, heerkulka dhex-dhexaadka ah ≤ 120°C. Dareeraha gaarka ah ee macdanta yar.
●Alxanka Gudaha
●Tijaabada raajada 100% + UT(sida ku cad ASTM B775)
●Xalka qaboojinta:Daawaynta kulaylka tuubada oo dhammaystiran (1050-1150°C), daminta biyaha.
●Qajaar iyo Neefsasho
●Imtixaanka Hydrostatic-ka
●Kormeerka PMI & Cabbirka
●Calaamadaynta
Habka LSAW ee Daawaha Sare - Dhexroor Aad u Weyn (406–1219mm OD, 6.0–40mm WT):
● UOE ama JCOE oo ka samaysan saxan 904L ah
● Alxanka SAW ee laba-geesoodka ah oo leh xakamaynta kulaylka adag
● Xalka oo dhan oo la buufiyo ka dib alxanka
Qodobbada Xakamaynta Muhiimka ah ee Alxanka 904L:
● Kuleylka la geliyo: ≤ 1.5 kJ/mm (bartilmaameed ≤ 1.2 kJ/mm)
● Heerkulka dhex-dhexaadka: ≤ 120°
● Gaaska gaashaanka: 100% Argon oo leh ogsijiin soo qaada
● Daminta xalka: 1050-1150°C, daminta biyaha - waa qasab
● Qajaar: Isku darka aashitada gaarka ah ee loogu talagalay dahaarka chromium/nickel ee sarreeya
7. Habraacyada Xakamaynta Tayada iyo Tijaabada ee ASTM B673 UNS N08904 Tuubooyinka Birta aan Lakabka lahayn ee la alxanka leh
| Masraxa | Habka Kormeerka | Ujeeddo |
| Walxaha Ceeriin | Falanqaynta Kiimikada (OES ama ICP) | Xaqiiji N08904 (Ni 23-28%, Cr 19-23%, Mo 4-5%, Cu 1-2%) |
| Walxaha Ceeriin | Tijaabada Tijaabada | Wax soo saar ≥ 220 MPa, Gariir ≥ 490 MPa |
| Walxaha Ceeriin | Tijaabada Daxalka (ASTM G28) | Iska caabbinta daxalka ee isku-dhafan (adeeg aashito ah) |
| Walxaha Ceeriin | Xisaabinta PREN | Hubi PREN ≥ 35 |
| Hawlgalka socda | Kormeerka Kuleylka gelinta | ≤ 1.5 kJ/mm |
| Hawlgalka socda | Heerkulka Dhexda | ≤ 120°C |
| Alxanka (ERW) | Eddy Current (100%) | Daacadnimada alxanka |
| Alxanka (EFW/LSAW) | 100% UT (ama PAUT) | Soo ogow cilladaha alxanka |
| Alxanka (EFW/LSAW) | RT (10-100% halkii qeexitaan) | Tayada alxanka |
| Alxanka | Rinjiga Rinjiga (PT) | Dildilaaca dusha sare |
| Ka dib marka la buufiyo xalka | Imtixaanka Adkaanta | ≤ 90 HRB |
| Ka dib marka la buufiyo xalka | Qaab-dhismeedka Yar (ASTM E407) | Ma jiraan calaamado, jiir, ama marxalado labaad |
| Tuubbo Dhammaystiran | Imtixaanka Hydrostatic-ka | Daacadnimada cadaadiska |
| Tuubbo Dhammaystiran | PMI (XRF) | Xaqiiji darajada (Ni, Cr, Mo, Cu) |
| Tuubbo Dhammaystiran | Tijaabada Daxalka ee Pitting (ASTM G48) | Xaqiiji iska caabbinta godka (haddii la cayimay) |
| Tuubbo Dhammaystiran | Muuqaal & Calaamadayn | Raad-raac |
Tijaabooyinka Ikhtiyaarka ah ee Adeegga Muhiimka ah:
● ASTM G28 Practice A (ferric sulfate-sulfuric acid) oo loogu talagalay daxalka isku-dhafka ah
● Tijaabada qodista ASTM G48 ee FeCl₃ (6% 40°C) ee adeegga biyaha badda
● Tijaabada HIC/SSC ee adeegga dhanaan (NACE TM0284, TM0177)
● Tijaabada naxaasta sulfate si loo yareeyo iska caabbinta aashitada
8. Codsiyada Aasaasiga ah - ASTM B673 UNS N08904 Tuubo Bir ah oo aan Lakab lahayn oo la alxan
●Dhirta aashitada sulfuric:Maareynta aashitada xooggan (90-98% H₂SO₄) heerkul dhexdhexaad ah, aashitada khafiifka ah (5-10%) heerkulka sare, iyo tuubooyinka qaboojiyaha aashitada. Waxay beddeshaa 316L iyo 317L.
●Soo saarista aashitada fosfooraska (habka qoyan):Uumi-bixiyayaasha, qaboojiyeyaasha iftiinka, iyo khadadka wareejinta ee maareeya fosfoorik aashitada leh chlorides iyo fluoride. 904L waa heerka caadiga ah ee fosfoorik aashitada habka qoyan.
●Tuubooyinka nuugista ee ka saarista sulfurization-ka gaaska qiiqa (FGD):Hoosta nuugayaasha halkaas oo gaasaska aashitada leh ee koloriin-ka qoyan ay ku jiraan. 904L waxaa loo isticmaalaa tuubooyinka soo baxa iyo dahaarka is dul saaran halkaasoo 317L aysan ku filnayn.
●Nidaamyada qaboojinta biyaha badda (heerkulka oo kor u kacay):Nidaamyada biyaha qaboojinta xeebaha halkaas oo heerkulka biyaha badda uu ka badan yahay 40°C. 904L waxay iska caabisaa inay ku dhacdo heerkulka halkaas oo 316L iyo xitaa super duplex ay ku fashilmi karaan.
●Haamaha kiimikada (IMO Nooca II):Tuubooyinka xamuulka ee kiimikooyinka dagaalka badan oo ay ku jiraan aashitada sulfuric, fosfoorasikada, iyo aashitada dabiiciga ah. 904L waxaa ansixiyay shirkado badan oo maraakiibta kiimikada ah.
●Adeegga dhanaan ee badda:Soo saarista saliidda iyo gaaska oo leh H₂S sare iyo koloriin sare, gaar ahaan meelaha heerkulku dhexdhexaad yahay laakiin baahida daxalka ay ka badan tahay laba-laab.
●Warshadda cadarka iyo warqadda lagu nadiifiyo:Adeegsiga koloriin laba ogsaydh iyo sodium hypochlorite halkaas oo 317L aan ku filnayn.
●Qalabka dawooyinka:Fal-celiyayaasha iyo tuubooyinka loogu talagalay hababka ku lug leh asiidhyada xooggan.
●Qalabka midabaynta dharka:Mashiinnada midabaynta oo gacanta ku haya maydadka rinjiga ee koloriin lagu daray.
●Habaynta cuntada:Biyo badan oo koloriin ku badan, cabitaanno khamiir leh, iyo cuntooyin aashito leh.
9. Baakadaha iyo Rarista - JIS A5525 SKK490 SSAW Tuubooyinka Birta ah
Baakadaha:
●Ilaalinta ka hortagga daxalka:Duub balaastig ah ama warqad VCI ah. Hadhaaga saliidda ma jiraan si loogu isticmaalo kiimikada.
●Daboolka ugu dambeeya:Koofiyado balaastig ah oo culus (midab leh - badanaa buluug loogu talagalay 904L).
●Xidhmo (Dhexdhexaad yar):Tuubo kasta si gaar ah ayaa loo duubay, ka dibna waxaa lagu xidhay suuman aan bir ahayn.
●Baakad shaqsiyeed (dhexroor weyn):Duub filim balaastig ah oo leh faraanti xumbo leh.
●Sanduuqyo alwaax ahmashaariicda kiimikada iyo kuwa badda ee muhiimka ah.
Rarista:
Weelasha oo ah ≤ 610mm, oo ah kuwa ugu badan ee dhexroorka weyn leh.
Dukumentiyada:MTC 3.1/3.2, warbixinta baaritaanka biyaha, warbixinnada UT/RT, warbixinta PMI, warbixinta tijaabada daxalka (haddii la cayimay), warbixinta cabbirka, liiska baakadaha, COO. Raad-raac buuxa laga bilaabo lambarka kulaylka ilaa tuubada la dhammeeyey.
10. Faa'iidooyinka iyo Su'aalaha Badiya La Weydiiyo ee Birta Womic – ASTM B673 UNS N08904 Tuubada Alxanka leh
Maxaa Loola Shaqayn Karaa Birta Womic si Loogu Sameeyo Tuubada Alxanka 904L?
● Cabbirka oo Dhameystiran: ERW 1/4″ – 24″, EFW/LSAW 8″ – 48″.
● Daadinta xalka oo dhammaystiran ka dib alxanka (1050-1150°C, daminta biyaha).
● Tijaabinta daxalka gudaha (ASTM G28, G48) ee adeegga aashitada iyo biyaha badda.
PREN ≥ 35 - iska caabin godad oo aad u fiican.
● Waqtiyada hogaaminta tartanka: 60-75 maalmood ERW, 75-90 maalmood EFW/LSAW.
● Shahaadada Caalamiga ah: ISO 9001, PED (CE), EN 10204 Nooca 3.2.
Su'aalaha Badiya La Weydiiyo (Su'aalaha Badiya La Weydiiyo) - ASTM B673 UNS N08904 Tuubo Alxan leh
S: Waa maxay faraqa u dhexeeya 904L iyo 316L?
A: 904L waxay leedahay nikkel aad u sarreeya (23-28% vs 10-14%), chromium sare (19-23% vs 16-18%), molybdenum sare (4-5% vs 2-3%), iyo naxaas lagu daray (1-2%). Tani waxay siinaysaa 904L iska caabin aad uga wanaagsan aashitada sulfuric, fosfoorasikada, iyo biqilka koloriinnada. PREN waa 35-40 vs 24-26 316L. 904L waa qiyaastii 3-4 jeer qiimaha 316L waxaana loo isticmaalaa meesha 316L uu ku guuldareysto.
S: Ma 904L ku habboon tahay adeegga biyaha badda?
J: Haa. 904L waxay leedahay iska caabin aad u fiican oo ku saabsan daloolada iyo daxalka godadka biyaha badda ilaa heerkul ah qiyaastii 50°C. Heerkulka sare ama xaaladaha aan degganayn, waxaa laga yaabaa in loo baahdo dahaarka super duplex ama nickel. 904L waxaa badanaa loo isticmaalaa nidaamyada qaboojinta biyaha badda halkaasoo 316L ay cillado.
S: Waa maxay heerkulka ugu sarreeya ee adeegga 904L ee aashitada sulfuric?
A: 50-70% H₂SO₄, 904L waxaa loo isticmaali karaa ilaa 100°C. 90-96% H₂SO₄, ku xaddid 50-60°C. Heerkulka sare ama aashitada xooggan, waxaa loo baahan yahay birta nikkel-ka oo sareysa (Alloy 20, Alloy 625, Alloy C-276). Had iyo jeer la tasho jaantusyada daxalka si aad u hesho xaalado gaar ah.
S: Ma 904L u baahan yahay daadinta xalka ka dib alxanka?
J: Haa, sida ku cad ASTM B673. 904L waxay samayn kartaa marxalado labaad (sigma, chi) alxanka HAZ haddii qaboojintu gaabis tahay. Xalka oo lagu kululeeyo 1050-1150°C oo ay ku xigto daminta biyuhu waxay milaan marxaladahan waxayna soo celisaa iska caabinta daxalka. Womic waxay qabataa xal buuxa oo lagu kululeeyo dhammaan tuubooyinka alxanka ee 904L. Alxanka goobta, isticmaal wax soo gelinta kulaylka yar oo tixgeli xalalka alxanka ka dib haddii ay suurtogal tahay.
S: Birta buuxinta alxanka noocee ah ayaa lagu talinayaa 904L?
A: AWS A5.14 ERNiCrMo-3 (Inconel 625) ama ER385 ayaa lagu talinayaa. ERNiCrMo-3 si caadi ah ayaa loo isticmaalaa waxayna bixisaa iska caabin wanaagsan oo daxalka ah oo u dhiganta 904L. ER385 waa buuxin gaar ah oo 904L ah. Womic waxay isticmaashaa ERNiCrMo-3 hababka EFW.
S: Ma 904L ku habboon yahay adeeg dhanaan (H₂S)?
J: Haa, 904L waxaa loo istaahilaa sida ku cad NACE MR0175/ISO 15156 adeeg dhanaan oo leh cadaadis qayb ah oo H₂S ah ilaa 1 bar (15 psi) oo ku jira heerarka adag ee gaarka ah. Badanaa waxaa loo isticmaalaa meelaha dhexdhexaadka ah ee dhanaanku ku filnayn sababtoo ah koloriin badan.
S: Waa maxay waqtiga caadiga ah ee hogaanka ee tuubooyinka alxanka 904L?
A: 60-75 maalmood ERW (dhexroor yar ilaa dhexdhexaad ah), 75-90 maalmood EFW/LSAW (dhexroor weyn). Waqtiyada rasaastu way ka dheer yihiin biraha aan miridhku lahayn ee caadiga ah sababtoo ah xariijinta birta/saxanka birta ah ee gaarka ah (badanaa 12-16 toddobaad laga bilaabo warshadda). Kormeerka dhinac saddexaad wuxuu ku darayaa 7-14 maalmood.
S: Ma loo isticmaali karaa 904L nidaamyada biyaha ee nadiifka ah?
J: Haa, laakiin badanaa waa mid aad loo qeexay. Biyaha saafiga ah (RO, DI, WFI), 316L waa ku filan tahay oo way ka dhaqaale badan tahay. 904L waxaa loo qoondeeyay xaaladaha kiimikada ama koloriin-ku badan yahay.
Tixraaca Mashruuca - Beddelka Tuubooyinka Qaboojiyaha Aashitada Sulfuri ee Warshadda Yurub
Dalka:Jarmalka (North Rhine-Westphalia, isku-dhafka kiimikada)
Heerka & Darajada:ASTM B673 UNS N08904 (904L) - tuubo alxan leh
Cabbirka iyo Tirada:
● OD 88.9mm (3″) × Jadwalka 10S (3.05mm WT) – 600 mitir (qiyaastii 5 tan) – Habka ERW
● OD 114.3mm (4″) × Jadwalka 10S (3.05mm WT) – 500 mitir (qiyaastii 6 tan) – Habka ERW
● OD 168.3mm (6″) × Jadwalka 10S (3.40mm WT) – 300 mitir (qiyaastii 4 tan) – Habka EFW
● OD 219.1mm (8″) × Jadwalka 10S (3.76mm WT) – 200 mitir (qiyaastii 4 tan) – Habka EFW
Wadarta:1,600 mitir, qiyaastii 19 tan
Tilmaamaha:Xalka ASTM B673 UNS N08904 oo la daadiyay oo la miiray, darafyo godan. Tijaabada Hydrostatic ee cadaadiska naqshadaynta 1.5× (naqshadeynta 1.2 MPa). 100% UT ee tuubooyinka EFW, hadda Eddy ee ERW. PMI ee tuubo kasta. Tijaabada daxalka ee qasabka ah ee ASTM G28 Practice A (ferric sulfate-sulfuric acid) - heerka daxalka < 5 mpy (la gaaray 2-3 mpy). Tijaabada daxalka ee la saarayo sida waafaqsan ASTM G48 Habka A (6% FeCl₃, 24 saacadood heerkulka 40°C) - ma jiro god. Tijaabada daxalka ee isku-dhafka ah ee sida waafaqsan ASTM A262 Practice E (pass). Kormeerka dhinac saddexaad oo ay samaysay TÜV Germany.
Codsiga:Beddelidda tuubooyinka qaboojiyaha aashitada iyo khadadka wareejinta ee la xiriira warshad dib u soo noolaynta aashitada sulfuric. Tuubooyinka waxay qabtaan aashitada sulfuric kulul (85-93% H₂SO₄) heerkul ah 70-90°C laga bilaabo munaaradda nuugista ilaa qaboojiyaha aashitada. Tuubooyinka hore ee 316L way fashilmeen 18 bilood ka dib sababtoo ah daxalka guud iyo godka. 904L waxaa loo xushay iska caabbinta sare ee aashitada sulfuric ee xoogga badan heerkulka sare.
Caqabadaha Farsamada iyo Xalalka:
●Daxalka ku jira aashitada sulfuric ee kulul ee xoogga badan (85-93%, 70-90°C)– 316L waxay ku milmaysaa heer ka badan 50 mpy xaaladahan. 904L oo leh nikkel sare, chromium, molybdenum, iyo naxaas waxay bixisaa heerka daxalka < 5 mpy. Tijaabada ASTM G28 ee Womic oo lagu sameeyay shaybaarada birta salka iyo alxanka. Heerarka daxalka: birta salka 2.1 mpy, alxanka 2.8 mpy - aad uga hooseeya xadka 5 mpy. Macmiilka ayaa la ansixiyay.
●Iska caabinta daxalka biraha alxanka– Alxanka ayaa ah meesha ugu nugul. Womic waxay isticmaashay kuleyl yar (≤ 1.2 kJ/mm) iyo buuxinta ERNiCrMo-3. Shaybaarada alxanka ayaa ka gudbay tijaabada G28 iyadoo heerka daxalka uu ahaa 2.8-3.2 mpy. Qaab-dhismeedka yar yar ma uusan muujin roobab marxalad labaad ah.
●Iska caabinta heerkulka sare– Aashitadu waxay ka kooban tahay koloriin raad ah (laga keenay isha biyaha). PREN 35-40 ee 904L waxay bixisaa iska caabinta godka. Tijaabada godka G48 ee Womic waxay samaysay 40°C (ka daran heerkulka adeegga 70°C? Dhab ahaantii heerkulka tijaabada 40°C waa ka hooseeyaa, laakiin FeCl₃ waa mid daran). Natiijo: ma jiro god 72 saacadood ka dib.
●Daxalka Intergranular ka dib alxanka– 904L waxay leedahay kaarboon yar (≤ 0.020%), laakiin dareeraha ayaa weli loo baahan yahay. Womic waxay samaysay nadiifinta xalka oo dhammaystiran 1100°C, iyadoo biyaha daminaysa. Tijaabada ASTM A262 Practice E ayaa la guddoonsiiyay.
●Habka alxanka goobta– Kooxda dayactirka warshadda waxay u baahdeen WPS-ka u qalma dayactirka. Womic waxay bixisay 15 kuuban oo alxan ah oo ay la socoto WPS iyadoo adeegsanaysa buuxinta GTAW, ERNiCrMo-3, horay u kululee 10-20°C, dhex-dhexaad ≤ 120°C, gelinta kulaylka ≤ 1.2 kJ/mm. Kuubannada ayaa ka gudbay tijaabada RT, PT, iyo G28.
●Saadka loo diro warshadda kiimikada ee Jarmalka– Dhuumaha waxaa laga soo raray Shanghai ilaa dekedda Hamburg, ka dibna waxaa loo raray goobta. TÜV Germany waxay baartay tuubooyinka Hamburg. Dhammaan 19 tan ayaa la keenay 10 toddobaad gudahood. Xirmada dukumentiyada (MTC 3.2, warbixinnada tijaabada) ayaa si elektaroonik ah loo keenay.
Natiijo:Tuubooyinka cusub ee 904L ayaa la rakibay intii lagu jiray wareegga rubuci saddexaad ee 2024. Ka dib 12 bilood oo shaqo ah, kormeerku ma muujin wax daxal ah oo la qiyaasi karo, god ma jirin, mana jirin wax daadasho ah. Macmiilku wuxuu filayaa cimri adeeg 15+ sano ah (marka loo eego 1.5 sano 316L). Womic Steel hadda waa alaab-qeybiye u qalma tuubooyinka adeegga aashitada sulfuric ee warshaddan kiimikada.
La xiriir:
Mareegta: www.womicsteel.com
Iimayl: sales@womicsteel.com
Taleefan / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568
Womic Steel - Lamaanahaaga lagu kalsoonaan karo ee ASTM B673 UNS N08904 tuubooyinka birta aan daxalka lahayn ee lagu dahaadhay warshadaha aashitada sulfuric iyo fosforic, nidaamyada FGD, qaboojinta biyaha badda, iyo adeegga kiimikada ee xooggan adduunka oo dhan.
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