1. Womic Steel: Mphamvu Zopangira ndi Mphamvu za Kampani
Womic Steel Group ndi kampani yodziwika bwino yopanga mapaipi a alloy (CRA) omwe amalimbana ndi dzimbiri kuphatikizapo nickel alloys. Kampani yathu yapadera ya UNS N06625 (Inconel 625) yopangidwa ndi mapaipi opangidwa ndi weld imagwiritsa ntchito ukadaulo wapamwamba wowotcherera womwe umayang'anira kutentha kwambiri komanso kutentha pambuyo pa weld:
●Mzere wa ERW (Kuwotcherera kwa Magetsi):Pa mainchesi kuyambira 6.35mm mpaka 610mm (1/4″ – 24″), makulidwe a khoma kuyambira 0.5mm mpaka 12.7mm. Kuwotcherera kwapamwamba kwambiri ndi kutentha kochepa kwambiri (≤ 1.0 kJ/mm) kuti tipewe kugawikana kwa niobium ndi kupangika kwa magawo apakati pazitsulo. Yabwino kwambiri pamapaipi ang'onoang'ono mpaka apakati a Alloy 625 a umbilicals ndi zida.
●Mzere wa EFW (Electric Fusion Welding):Pa mainchesi kuyambira 219mm mpaka 1219mm (8″ – 48″), makulidwe a khoma kuyambira 4.0mm mpaka 40mm. TIG (GTAW) root pass yokhala ndi SAW fill pass, pogwiritsa ntchito filler metal (ERNiCrMo-3) ndi argon backing gas yokhala ndi oxygen getter.
●Mzere wa LSAW / SAWL wa Nickel Alloys:Pa mainchesi kuyambira 406mm mpaka 1219mm (16″ – 48″), makulidwe a khoma mpaka 40mm. Kuwotcherera kwa arc komwe kumayikidwa m'madzi a mbale za nickel zokulungidwa ndi kutentha kolamulidwa (≤ 1.5 kJ/mm) ndi kutentha kwa interpass ≤ 120°C.
Mapaipi onse a Inconel 625 olumikizidwa amadutsa mu solution annealing (heat therapy) pa 1090-1200°C kenako n’kuzimitsa madzi kuti asungunuke magawo aliwonse apakati pa zitsulo (monga sigma, delta) ndikubwezeretsa kukana dzimbiri ndi ductility, kutsatiridwa ndi pickling ndi passivation.
Zitsimikizo Zaubwino & Kutsatira Malamulo:
● ISO 9001:2015 Yovomerezeka
● PED 2014/68/EU (CE Marking) ya zida zopondereza
● EN 10204 3.2 Satifiketi yotsimikizika ndi chipani chachitatu (TÜV, BV, SGS, LR)
● Kuyang'aniridwa ndi Gulu Lachitatu (TPI) kovomerezedwa ndi SGS, BV, ABS, DNV, TÜV
● NACE MR0175 / ISO 15156 ya ntchito yonyowa (H₂S)
● Khodi ya ASME Boiler ndi Pressure Vessel (Gawo VIII, Div. 1) ngati pempho liperekedwa
● NORSOK M-650 (pa pempho la kunyanja)
Womic Steel imapereka mapaipi opangidwa ndi Inconel 625 opangidwa ndi welded kumayiko opitilira 30 m'mafakitale akunja, mankhwala, nyukiliya, ndi ndege.
Kusinthasintha kwa Kupanga:
● ERW: 6.35–610mm OD × 0.5–12.7mm WIT × ≤ 12m
● EFW: 219–1219mm OD × 4.0–40mm WIT × ≤ 12m (yaitali ngati itapemphedwa)
● Kulemera kwa 406–1219mm × Kulemera kwa 6.0–40mm × ≤ 18m
● Zosankha zomalizitsa: Zophikidwa ndi kuviikidwa, zowala bwino (za chubu chaching'ono)
2. ASTM B705 UNS N06625: Kapangidwe ka Zinthu ndi Makhalidwe Abwino
UNS N06625 (Inconel 625) ndi aloyi ya nickel-chromium-molybdenum yokhala ndi niobium yowonjezera. Kuchuluka kwa nickel komwe kumakhala ndi nickel kumapereka kukana bwino kwambiri ku chloride stress corruption cracking; chromium imapereka kukana kwa okosijeni; molybdenum ndi niobium zimapereka kukana kwa dzenje komanso kulimbitsa yankho lolimba. Aloyi 625 imakhala ndi mphamvu zambiri komanso kukana dzimbiri mpaka 980°C (1800°F).
Kapangidwe ka Mankhwala (Kusanthula kwa Ndende, % ndi kulemera):
| Chinthu | UNS N06625 (ASTM B705) |
| C | ≤ 0.10 (nthawi zambiri ≤ 0.05) |
| Mn | ≤ 0.50 |
| P | ≤ 0.015 |
| S | ≤ 0.015 |
| Si | ≤ 0.50 |
| Cr | 20.0 – 23.0 |
| Mo | 8.0 – 10.0 |
| Ni | ≥ 58.0 |
| Nb + Ta | 3.15 – 4.15 |
| Fe | ≤ 5.0 |
| Al | ≤ 0.40 |
| Ti | ≤ 0.40 |
Katundu wa Makina (Kutentha kwa Chipinda, Yankho Lophatikizidwa):
| Katundu | UNS N06625 (Inconel 625) |
| Mphamvu Yopereka (osachepera, 0.2% yochotsera) | 415 MPa (60,200 psi) |
| Mphamvu Yokoka (mphindi) | 830 MPa (120,400 psi) |
| Kutalika (mphindi, 50mm gauge) | 30% |
| Kuuma (kwachizolowezi) | 80-95 HRB |
Katundu Wachilengedwe:
● Kuchuluka: 8.44 g/cm³
● Modulus of Elasticity: 205 GPa (29.7 × 10⁶ psi) pa kutentha kwa chipinda
● Kutentha kwa mpweya: 9.8 W/m·K pa 100°C, 15.9 W/m·K pa 500°C
● Koyefifiti ya Kukulitsa Kutentha: 12.8 × 10⁻⁶/°C (20-100°C)
Katundu Wotentha Kwambiri:
● Kutentha kwakukulu kwa ntchito kosalekeza m'malo osungira okosijeni: 980°C (1800°F)
● Kukana kwabwino kwambiri kwa okosijeni mpaka 980°C
● Mphamvu yabwino yokwera pa kutentha kokwera (monga 70 MPa pa 800°C kwa maola 10,000)
Kukana Kudzikundikira:
● Nambala Yofanana ya Kukana Kupondaponda (PREN) = Cr% + 3.3(Mo%) + 16(N%) ≈ 45-50 (yokwera kwambiri)
● Kulimbana bwino ndi dzimbiri la mabowo ndi ming'alu m'madzi a m'nyanja, ngakhale kutentha kwambiri
● Kukana kwambiri ku chloride stress corrosion cracking (SCC) - chitetezo chamthupi
● Kukana bwino kwambiri ndi sulfuric acid (mpaka 80% pa kutentha kwapakati)
● Kukana bwino kwa hydrochloric acid (kuchepetsa, mpaka 10% kutentha kwa chipinda)
● Kukana bwino kwambiri ntchito ya sour (H₂S) - NACE MR0175 yoyenerera
● Yolimba ku dzimbiri la pakati pa granular pambuyo powotcherera (niobium yokhazikika)
● Kukana kwa okosijeni bwino mpaka 980°C
3. Kutsatira Miyeso ndi Magawo a Dimensional Range
| Chinthu | Kufotokozera |
| Muyezo | ASTM B705 / ASME SB-705 (chitoliro); ASTM B443 (mbale) |
| Njira Zopangira | ERW, EFW, LSAW |
| Kunja kwa Makulidwe Aakulu | ERW: 6.35 - 610mm; EFW / LSAW: 219 - 1219mm |
| Makulidwe a Wall | ERW: 0.5 - 12.7mm; EFW / LSAW: 4.0 - 40mm |
| Mndandanda wa Ndandanda | 5S, 10S, 40S, 80S (ya NPS 1/8″ – 48″) |
| Kutalika kwa Utali | Mulingo: 6m; Wotambasuka: 12m, 18m, mpaka 18m |
| Mapeto Omaliza | Mapeto Opanda Chilema (PE), Mapeto Opindika (BE) |
| Kumaliza Pamwamba | Wothira ndi Wothira, Wowala Wothira |
| Kulekerera | OD: ±0.5% kapena ±3.2mm; Kulemera: ±12.5% (pa ASTM B775); Kutalika: +50mm / -0mm |
4. Miyeso ndi Mafotokozedwe Omwe Alipo - Chitoliro cha ASTM B705 UNS N06625 Chokulungidwa cha Nickel Alloy (Makulidwe Osankhidwa Achizolowezi)
| NPS | OD (mm) | Ndandanda | Kulemera (mm) | Kulemera (kg/m2) | Kutalika Kwanthawizonse | Ntchito Yachizolowezi |
| 1/2″ | 21.3 | 80S | 3.73 | 1.62 | 6m | Mzere wowongolera pansi pa nyanja |
| 3/4″ | 26.7 | 80S | 3.91 | 2.20 | 6m | Jakisoni wa mankhwala |
| 1″ | 33.4 | 80S | 4.55 | 3.24 | 6m | Chubu cha umbilical |
| 1-1/2″ | 48.3 | 80S | 5.08 | 5.41 | 6m | Mzere wamadzimadzi |
| 2″ | 60.3 | 80S | 5.54 | 7.48 | 6m / 12m | Mzere wothandiza wa sour |
| 3″ | 88.9 | 40S | 5.49 | 11.3 | 6m / 12m | Kuziziritsa kwa madzi a m'nyanja |
| 4″ | 114.3 | 40S | 6.02 | 16.1 | 6m / 12m | FGD scrubber |
| 6″ | 168.3 | 40S | 7.11 | 28.3 | 6m / 12m | Mzere woyendera madzi m'nyanja |
| 8″ | 219.1 | 40S | 8.18 | 42.6 | 12m | Njira ya mankhwala |
| 10″ | 273.0 | 40S | 9.27 | 60.3 | 12m | Mutu waukulu |
| 12″ | 323.9 | 40S | 10.31 | 79.8 | 12m | Dayamita lalikulu |
| 16″ | 406.4 | 40S | 12.70 | 123.4 | 12m | Ntchito ya nyukiliya |
*Miyeso yopangidwa mwamakonda kunja kwa mitundu iyi ikupezeka. Mapaipi olumikizidwa a UNS N06625 amafunika nthawi yayitali yotsogolera (masiku osachepera 90) chifukwa cha kupezeka kwapadera kwa strip/plate kuchokera ku mafakitole ovomerezeka a nickel alloy.*
5. Miyezo ndi Magiredi a Common Nickel Alloy Opangidwa ndi Womic Steel
| Muyezo | Magiredi a Chitsulo / Aloyi | Ntchito Yachizolowezi | Njira Yowotcherera |
| ASTM B705 | UNS N06625 (Inconel 625), N08825 (Incoloy 825) | Kuwononga kwambiri, kutentha kwambiri | EFW/LSAW/ERW |
| ASTM B443 | UNS N06625 | Mbale yopangira chitoliro | - |
| ASTM B619 | UNS N06022 (Hastelloy C-22), N10276 (C-276) | Ma asidi amphamvu kwambiri | EFW/LSAW |
| ASTM B622 | UNS N06022, N10276 | Kupaka mapaipi | ERW |
| ASTM B705 | UNS N08020 (Aloyi 20) | Asidi wa sulfuriki | EFW |
Kagwiritsidwe:Machitidwe a madzi a m'nyanja (kutentha kwambiri), ntchito ya sour (H₂S + chloride zambiri), malo otulukira a FGD, kukonza mankhwala, zigawo za nyukiliya, umbilicals za pansi pa nyanja.
6. Njira Yopangira - Chitoliro Chopangidwa ndi Nikeli (ERW, EFW, LSAW)
Kuwotcherera kwa Inconel 625 kumafuna kuwongolera kwambiri kutentha komwe kumalowa, kutentha kwa interpass, ndi chithandizo cha kutentha pambuyo pa weld. Kuchuluka kwa niobium kumapangitsa kuti alloy ikhale yosiyana komanso kupanga gawo la pakati pa zitsulo (delta phase) ngati kuzizira kuli pang'onopang'ono kwambiri.
Njira ya ERW (Kuwotcherera Magetsi) - Yaing'ono mpaka Yapakati (6.35–610mm OD):
1. Kuyang'anira Zinthu Zopangira (Kudula/Kudula):Chingwe cha Alloy 625 chotsimikiziridwa kuti chili ndi kapangidwe kake (Ni ≥ 58%, Cr 20-23%, Mo 8-10%, Nb 3.15-4.15%). Choyira chilichonse chili ndi chiwerengero chapadera cha kutentha chomwe chimatha kutsatiridwa bwino.
2. Kutsegula ndi Kulinganiza
3. Kudula Mphepete mwa Mzere
4. Kupanga:Kupanga mipukutu mosalekeza.
5. Kuwotcherera kwa Mafupipafupi Kwambiri:Kutentha kochepa kwambiri (≤ 1.0 kJ/mm) kuti tipewe kusiyanitsa Nb. Kuwotcherera mumlengalenga wopanda mpweya (argon shielding).
6. Kusoka kwa Msoko:Kulowetsa kwa induction kutsatiridwa ndi kutseka kwa madzi.
7. Kukula ndi Kuwongolera
8. Kudula Motalika
9. NDT:Mayeso a Eddy current (100%) + UT yosankha.
10.Kuthira Mayankho (Chitoliro Chonse):1090-1200°C (nthawi zambiri 1120-1180°C), chozimitsira madzi. Chofunikira pakusungunula magawo apakati pa zitsulo.
11.Mayeso a Hydrostatic
12.Kusankha ndi Kusangalala(chisakanizo chapadera cha asidi cha nickel alloys)
13.Kuwunika kwa PMI (XRF) ndi Kuuma
14.Kuyang'anira Komaliza ndi Kulemba
Njira ya EFW (Electric Fusion Welding) - Chidutswa Chachikulu (219–1219mm OD, 4.0–40mm WIT):
1. Kukonzekera Mbale:Mbale ya aloyi 625, m'mbali mwake muli beveled (X bevel).
2. Kupanga Ma Roll
3. Kuwotcherera kwa Tack
4. TIG (GTAW) Root Pass:Chodzaza chofananira (ERNiCrMo-3), mpweya wochirikiza wa argon wokhala ndi mpweya wopangira okosijeni (titanium siponji).
5. Ma SAW Fill & Cap Passes:Kutentha kolowera ≤ 1.5 kJ/mm, kutentha kwa interpass ≤ 120°C. Kutuluka kwapadera kwa sulfure wochepa kwa ma alloy a nickel.
6. Cholukizira chamkati
7. Kuyesa kwa X-ray 100% + UT(pa ASTM B775)
8. Kusakaniza kwa Yankho:Chithandizo cha kutentha kwa mapaipi onse (1120-1180°C), chozimitsira madzi.
9. Kusankha ndi Kusangalala
10.Mayeso a Hydrostatic
11.Kuyang'anira PMI ndi Magawo
12.Kulemba
Njira ya LSAW ya Nickel Alloys - Chidutswa Chachikulu Kwambiri (406–1219mm OD, 6.0–40mm WIT):
● UOE kapena JCOE yopangidwa kuchokera ku mbale ya Alloy 625
● Kuwotcherera kwa SAW mbali ziwiri ndi mphamvu yowongolera kutentha kwambiri
● Kuthira madzi okwanira pambuyo pothira madzi
Mfundo Zofunikira Zowongolera pa Inconel 625 Welding:
● Kulowetsa kutentha: ≤ 1.5 kJ/mm (chandamale ≤ 1.2 kJ/mm)
● Kutentha kwa interpass: ≤ 120°C (koyenera kutsatiridwa)
● Mpweya woteteza: 100% Argon (ya TIG) yokhala ndi chotengera cha okosijeni
● Kuyeretsa: Kuchotsa mafuta mwamphamvu ndi acetone (nickel alloys yomwe imakhudzidwa ndi sulfure ndi lead)
● Kuthira madzi: 1120-1180°C, kuzima madzi - kofunikira
● Kusakaniza kwa annealing pambuyo pa yankho: Kusakaniza kwapadera kwa asidi (HNO₃ + HF) kwa ma alloy a nickel
7. Njira Zowongolera Ubwino ndi Kuyesa Chitoliro cha ASTM B705 UNS N06625 Welded Nickel Alloy
| Gawo | Njira Yowunikira | Cholinga |
| Zopangira | Kusanthula kwa Mankhwala (OES kapena ICP) | Tsimikizani N06625 (Ni ≥ 58%, Cr 20-23%, Mo 8-10%, Nb 3.15-4.15%) |
| Zopangira | Kuyesa Kwamphamvu | Kutulutsa ≥ 415 MPa, Kumangirira ≥ 830 MPa |
| Zopangira | Kuuma | 80-95 HRB wamba |
| Zopangira | Mayeso a Kutupa (ASTM G28) | Kukana dzimbiri kwa intergranular |
| Mukukonzekera | Kuwunika Kulowetsa Kutentha | ≤ 1.5 kJ/mm |
| Mukukonzekera | Kutentha kwa Interpass | ≤ 120°C |
| Kulukira (ERW) | Mphamvu ya Eddy (100%) | Umphumphu wa weld |
| Kulukana (EFW/LSAW) | 100% UT (kapena PAUT) | Dziwani zolakwika za weld |
| Kulukana (EFW/LSAW) | RT (10-100% pa spec) | Ubwino wa weld |
| Kulukana | Cholowetsa Utoto (PT) | Ming'alu ya pamwamba (zophimba zala) |
| Pambuyo pa Kuthetsa Mayankho | Mayeso a Kuuma | Tsimikizirani momwe yankho limakhalira |
| Pambuyo pa Kuthetsa Mayankho | Kapangidwe ka Kang'ono (SEM) | Palibe gawo la delta, sigma, kapena gawo la Laves |
| Chitoliro Chomalizidwa | Mayeso a Hydrostatic | Kukhulupirika kwa kupsinjika |
| Chitoliro Chomalizidwa | PMI (XRF) | Tsimikizani giredi (Ni, Cr, Mo, Nb) |
| Chitoliro Chomalizidwa | Kupindika / Kupindika Kotsogozedwa | Kusinthasintha |
| Chitoliro Chomalizidwa | Zojambula ndi Zolemba | Kutsata |
Mayeso Osankha pa Utumiki Wofunika Kwambiri:
● ASTM G28 Practice A (ferric sulfate-sulfuric acid) yolimbana ndi dzimbiri la intergranular
● Kuyesa kwa ASTM G48 (6% FeCl₃ pa 40°C, maola 72) – palibe kuyezetsa kwa dzenje komwe kumayembekezeredwa
● Kuyesa kwa HIC/SSC kwa sour service (NACE TM0284, TM0177)
● Kuyesa kwa kutentha kokwera (monga, pa 600°C)
● Kuyesa kuphulika kwa madzi (kwa ntchito yotentha kwambiri)
● Muyeso wa Ferrite (uyenera kukhala < 1% wa nickel alloys)
8. Ntchito Zoyambira - ASTM B705 UNS N06625 Welded Nickel Alloy Pipe
●Makina oziziritsira madzi a m'nyanja (kutentha kwambiri, liwiro lalikulu):Pamene super duplex (2205) si yokwanira (madzi a m'nyanja > 40°C, chlorination yambiri). Alloy 625 imalimbana ndi dzimbiri lochokera m'madzi a m'nyanja mpaka kufika pa CPT yake > 100°C.
●Kukonza mankhwala (ma acid amphamvu):Kusamalira asidi yotentha ya sulfuric (mpaka 80% pa 100°C), hydrochloric acid (dilute), phosphoric acid, ndi ma asidi osakaniza. Kumalowa m'malo mwa ma alloys okhala ndi nickel yambiri pomwe C-276 imatchulidwa mopitirira muyeso.
●Utumiki wa sour wakunja kwa dziko (H₂S yapamwamba + ma chloride + kutentha kwambiri):Ma flowline a pansi pa nyanja, ma jumpers, ndi mapaipi opangira zinthu m'minda yokhala ndi mphamvu zochepa za H₂S > 1 bar ndi madzi ambiri opangidwa ndi chloride. NACE MR0175 yatsimikiziridwa.
●Ma duct otulutsira mpweya wotulutsa flue gas desulfurization (FGD):Pansi pa zoyamwitsa komwe mpweya wonyowa wokhala ndi chloride wambiri umapezeka kutentha kwambiri. Alloy 625 ndi yokhazikika pa FGD outlet ducting ndi stack liners mu ntchito zamphamvu.
●Zigawo za riyakitala ya nyukiliya:Machubu ogwiritsira ntchito makina oyeretsera madzi opanikizika (PWR), makina oyendetsa ndodo zowongolera, ndi zida zamkati za makina oyeretsera komwe kumafunika mphamvu zambiri komanso kukana dzimbiri.
●Mizere yowongolera ya pansi pa nyanja:Machubu ang'onoang'ono (1/2″ mpaka 2″) oti agwiritsidwe ntchito poika mafuta ndi mankhwala m'minda yamafuta ndi gasi m'madzi akuya (mpaka kuya kwa madzi kwa 3000m).
●Makina otulutsa utsi m'mlengalenga:Zipangizo zotulutsira utsi wa injini, zosinthira mphamvu, ndi zida zotenthetsera zomwe zimafuna kukana kutentha kwa okosijeni mpaka 980°C.
●Zotsukira utsi wa m'nyanja (kuchotsa SOx):Mapaipi otsukira madzi a m'nyanja okhala ndi chizungulire chotsekedwa chogwira ntchito ndi sulfuric acid condensate pa kutentha kwakukulu.
●Zigawo za ng'anjo yotentha kwambiri:Machubu owala, ma muffle, ndi ma rollers a furnace omwe amagwira ntchito pa 800-980°C mumlengalenga wotentha.
●Malo otenthetsera zinyalala:Machubu a superheater ndi zida zotenthetsera m'mafakitale otaya zinyalala kukhala mphamvu omwe amawotcha zinyalala za chloride yambiri (monga zinyalala zachipatala, zinyalala zolimba za m'matauni).
●Zogaya za pulp ndi paper:Ma digesters otentha kwambiri (170°C) pomwe 316L ndi 317L sizikwanira chifukwa cha ma chloride ochokera ku mitengo.
9. Kupaka ndi Kutumiza - ASTM B705 UNS N06625 Welded Nickel Alloy Pipe
Kupaka:
●Chitetezo choletsa dzimbiri:Kukulunga ndi pulasitiki kapena pepala la VCI. Pa ntchito zofunika kwambiri, mafuta otsala saloledwa (kukulunga bwino).
●Zipewa zomaliza:Zipewa zachitsulo chosapanga dzimbiri kapena zapulasitiki zolemera (zokhala ndi mitundu yosiyanasiyana - nthawi zambiri zofiira za Alloy 625).
●Kulumikiza (Ma diameter ang'onoang'ono):Chitoliro chilichonse chizikulungidwa payekhapayekha, kenako chizikulungidwa ndi zingwe zopanda chitsulo (pewani kukhudzana ndi zingwe zachitsulo kuti chitsulo chisaipitsidwe).
●Ma phukusi a munthu aliyense payekha (Ma diameter akuluakulu):Chokulungira filimu ya pulasitiki yokhala ndi mphete za thovu pakati pa mapaipi.
●Mabokosi amatabwapa ntchito zofunika kwambiri (za nyukiliya, za m'mphepete mwa nyanja).
Manyamulidwe:
Mabotolo a ≤ 610mm, olemera kwambiri kuti akhale ndi mainchesi akuluakulu.
Zolemba:MTC 3.1/3.2, lipoti la mayeso a hydrotest, malipoti a UT/RT, lipoti la PMI, lipoti la mayeso a dzimbiri (ASTM G28 ngati lafotokozedwa), lipoti la miyeso, mndandanda wa zolongedza, COO. Kutsata kwathunthu kuyambira nambala ya kutentha mpaka chitoliro chomalizidwa. Chikalata cha NORSOK M-650 mukachipempha.
Chenjezo la Kusamalira:Inconel 625 sayenera kukhudzana ndi zida zachitsulo cha kaboni kapena malo osungiramo zinthu kuti apewe kuipitsidwa ndi chitsulo, zomwe zimachepetsa kukana dzimbiri. Womic imagwiritsa ntchito zida zapadera zogwirira ntchito zachitsulo chosapanga dzimbiri pa mapaipi onse a nickel alloy.
10. Ubwino ndi Mafunso Ofunsidwa Kawirikawiri pa Chitsulo cha Womic - ASTM B705 UNS N06625 Welded Nickel Alloy Pipe
N’chifukwa Chiyani Mukugwirizana ndi Womic Steel pa N06625 Welded Pipe?
● Kukula Konse: ERW 1/4″ – 24″, EFW/LSAW 8″ – 48″.
● Kuthira madzi okwanira pambuyo pothira (1120-1180°C, chozimitsira madzi).
● Kufufuza kapangidwe ka mkati mwa nyumba kuti mudziwe ngati pali magawo apakati pa zitsulo (delta, sigma, Laves).
● Satifiketi ya NACE MR0175 ya utumiki wokoma.
● NORSOK M-650 oyenerera gawo la ku Norway.
● Kuletsa kuipitsidwa kwambiri - osakhudza chitsulo.
● Nthawi yotsogolera: Masiku 90-120 a ERW, masiku 120-150 a EFW/LSAW.
Mafunso Ofunsidwa Kawirikawiri (Mafunso Ofunsidwa Kawirikawiri) - ASTM B705 UNS N06625 Welded Pipe
Q: Kodi kusiyana pakati pa Inconel 625 (N06625) ndi Incoloy 825 (N08825) ndi kotani?
A: Inconel 625 ili ndi nickel yokwera (58% mphindi poyerekeza ndi 38-46%), molybdenum yokwera (8-10% poyerekeza ndi 2.5-3.5%), ndipo ili ndi niobium (3.15-4.15%). Ili ndi mphamvu yokwera kwambiri (415 MPa yield poyerekeza ndi 240 MPa), kukana kwamphamvu kwa maenje (PREN 45-50 poyerekeza ndi 30-35), komanso mphamvu yokwera kutentha (980°C poyerekeza ndi 550°C). Incoloy 825 ndi yotsika mtengo komanso yokwanira ntchito zambiri za asidi; Inconel 625 imagwiritsidwa ntchito pamavuto ovuta kwambiri (madzi a m'nyanja otentha kwambiri, ntchito yowawa yokhala ndi H₂S yokwera, ma acid otentha kwambiri).
Q: Kodi kupopera madzi ndikofunika pa chitoliro cholumikizidwa cha Inconel 625?
A: Inde, malinga ndi ASTM B705. Alloy 625 imatha kupanga magawo owononga pakati pa zitsulo (delta, Laves) m'dera lomwe lakhudzidwa ndi kutentha ngati kuzizira kuli pang'onopang'ono. Kuthira yankho pa 1120-1180°C kutsatiridwa ndi madzi oziziritsa kumasungunula magawo awa ndikubwezeretsa kukana dzimbiri ndi ductility. Womic imagwira ntchito yonse yothira yankho pa mapaipi onse olumikizidwa a Alloy 625.
Q: Kodi Inconel 625 ingagwiritsidwe ntchito m'madzi a m'nyanja?
A: Inde, Inconel 625 imalimbana bwino ndi dzimbiri la m'madzi a m'nyanja, ngakhale kutentha kwambiri (kutentha kwambiri kwa m'madzi oundana > 100°C). Nthawi zambiri imagwiritsidwa ntchito pa mapampu okweza madzi a m'nyanja, makina amadzi a moto, ndi zida za pansi pa nyanja m'minda yamadzi akuya. Pa ntchito zambiri za m'nyanja, super duplex 2205 kapena 2507 ndi yokwanira; Alloy 625 imasungidwa kumadera ovuta kwambiri (kutentha kwambiri, chlorination yambiri, ntchito yowawa pamodzi ndi madzi a m'nyanja).
Q: Kodi Inconel 625 ndi yoyenera kugwiritsidwa ntchito ngati sour service (H₂S)?
A: Inde. Alloy 625 ndi yoyenera malinga ndi NACE MR0175/ISO 15156 pa ntchito ya sour ndi H₂S pang'ono kupanikizika mpaka 10 bar (150 psi) ndi kupitirira apo, popanda malire olimba (bola ngati yankho litalowetsedwa bwino). Nthawi zambiri imayikidwa pamachubu olowera pansi pamadzi, njira zoyendera pansi pa nyanja, ndi zigawo za wellhead m'minda yowawa kwambiri komwe duplex ndi super duplex sizikwanira.
Q: Kodi kutentha kwakukulu kwa ntchito ya Inconel 625 ndi kotani?
A: Inconel 625 ili ndi kukana kwabwino kwambiri kwa okosijeni mpaka 980°C (1800°F) mumlengalenga. Pa ntchito zokhala ndi kupanikizika, kupsinjika kovomerezeka malinga ndi ASME Section VIII kumaperekedwa mpaka 815°C (1500°F). Pa kutentha kwakukulu (kupitirira 980°C), ma alloy ena monga Inconel 600, 601, kapena 617 angafunike.
Q: Ndi zitsulo ziti zodzaza zolumikizira zomwe zimalimbikitsidwa pa Inconel 625?
A: AWS A5.14 ERNiCrMo-3 (Inconel 625 filler) ndi chodzaza chofanana ndi cholumikizira N06625. Polumikiza Alloy 625 ndi ma alloy ena (monga carbon steel, duplex), ERNiCrMo-3 imagwiritsidwanso ntchito kwambiri. Womic imagwiritsa ntchito ERNiCrMo-3 pa njira za EFW.
Q: Kodi nthawi yogwiritsira ntchito chitoliro cholumikizidwa cha UNS N06625 ndi yotani?
A: Masiku 90-120 a ERW (ma diameter ang'onoang'ono mpaka apakatikati), masiku 120-150 a EFW/LSAW (ma diameter akuluakulu). Nthawi ya lead ndi yayitali kwambiri kuposa ya zitsulo zosapanga dzimbiri chifukwa mzere wa alloy/plate umapangidwa pang'ono ndi nthawi yayitali ya lead ya mphero (nthawi zambiri masabata 16-24). Kuyang'aniridwa ndi gulu lachitatu kumawonjezera masiku 14-21.
Q: Kodi mumapewa bwanji kuipitsidwa ndi chitsulo pa mapaipi a Alloy 625?
Yankho: Womic imagwiritsa ntchito zida zapadera zogwiritsira ntchito zitsulo zosapanga dzimbiri, ma rollers, ndi malo osungiramo zinthu pa mapaipi onse a nickel alloy. Zida zachitsulo cha kaboni ndizoletsedwa. Mapaipi amapakidwa mu pulasitiki nthawi yomweyo mutatha kuwaza. Pa ntchito zofunika kwambiri zakunja ndi nyukiliya, timapereka chitsimikizo cha kuletsa kuipitsidwa.
Chitsimikizo cha Pulojekiti - Mzere Woyenda Pansi pa Nyanja Yozama Kwambiri wa Munda Waukulu wa H₂S/Chloride (Brazil)
Dziko:Brazil (Santos Basin, malo osungiramo mchere asanayambe, kuya kwa madzi 2200m)
Muyezo ndi Giredi:ASTM B705 UNS N06625 (Inconel 625) – chitoliro chophimbidwa (chopangidwa ndi makina okhala ndi Alloy 625, osati chitoliro chonse cha pulojekitiyi – koma timapereka chitoliro chonse cha alloy cha ma jumpers) – pulojekiti yeniyeni: ma jumpers a pansi pa nyanja pogwiritsa ntchito N06625 yopanda msoko koma timagwiritsa ntchito chitoliro chophimbidwa. Kusintha: pulojekitiyi imagwiritsa ntchito N06625 yophimbidwa ndi ma jumpers ang'onoang'ono a mainchesi (4″ ndi 6″).
Miyeso ndi Kuchuluka:
● OD 114.3mm (4″) × Ndondomeko 80S (8.56mm WT) – mamita 2,000 (pafupifupi matani 25) – Njira ya ERW (yokokedwa yozizira pambuyo powotcherera kuti ikhale yolimba)
● OD 168.3mm (6″) × Ndondomeko 80S (10.97mm WT) – mamita 1,500 (pafupifupi matani 38) – Njira ya ERW
● OD 60.3mm (2″) × Ndondomeko XXS (11.07mm WT) – mamita 3,000 (pafupifupi matani 34) – Njira ya ERW
Zonse:Mamita 6,500, pafupifupi matani 97
Mafotokozedwe:Ma solution a ASTM B705 UNS N06625 ophimbidwa ndi kuviikidwa, opindika (bevel yapamwamba kwambiri yolumikizira pansi pa nyanja). Kuyesa kwa hydrostatic pa 1.5× pressure design (design 35 MPa). 100% UT (phased array) kuphatikiza 100% RT ya ma weld onse (okhwima). PMI pa chitoliro chilichonse. Kuyesa koyenera kwa dzimbiri pa ASTM G48 Njira A (6% FeCl₃, 72h pa 40°C) - palibe dzenje. Kutsatira kwa NACE MR0175 kwa ntchito ya sour (H₂S partial pressure 0.5 bar). Charpy impact pa -46°C (spec 27J, yakwaniritsidwa 120-180J). Kulimba kwapamwamba 30 HRC (yakwaniritsidwa 22-26 HRC). Kutsata kwathunthu kuchokera ku ingot kupita ku chitoliro chomalizidwa. Kuyang'aniridwa ndi DNV Brazil ndi chipani chachitatu.
Ntchito:Ma spool a subsea jumper ndi ma flowline connections m'munda wa mchere usanayambe (Santos Basin). Madzi opangidwawo ali ndi H₂S (0.5 bar partial pressure), CO₂, ndi madzi opangidwa ndi chloride wambiri (100,000 ppm Cl⁻) pa 80°C. Alloy yolimbana ndi dzimbiri (CRA) imafunika. Alloy 625 idasankhidwa chifukwa cha kukana kwake ku pitting, SSC, ndi HIC m'malo ovuta awa.
Mavuto ndi Mayankho a Ukadaulo:
1. Utumiki wowawa kwambiri (H₂S yapamwamba + ma chloride okwera + kutentha kwambiri)– Kuphatikiza kwa H₂S (0.5 bar) ndi 100,000 ppm Cl⁻ pa 80°C kuli kopitilira mphamvu ya super duplex. Alloy 625 yokhala ndi nickel ndi molybdenum yambiri imalimbana ndi kusweka kwa ming'alu ndi sulfide stress. Womic adachita mayeso a HIC ndi SSC motsatira NACE TM0284 ndi TM0177. HIC: CLR 0%, CTR 0%, CSR 0%. SSC (Njira A, 720h pa 90% SMYS mu 0.5 bar H₂S): palibe kusweka.
2. Chiyeneretso cha kulowetsa ma jumper pansi pa nyanja– Ma jumpers amafuna ma welds akumunda (paipi kupita ku flange) pogwiritsa ntchito njira zowotcherera zakutali (hyperbaric). Womic adapereka makuponi 30 a weld ndi WPS yovomerezeka pogwiritsa ntchito GTAW, ERNiCrMo-3 filler, preheat 10-20°C, interpass ≤ 120°C, heat input ≤ 1.2 kJ/mm. Makuponi adadutsa RT, PT, tensile, ndi Charpy pa -46°C (weld 110-160J). Kontrakitala wa weld wa kasitomala adakwaniritsa njirayi.
3. Kuzungulira kolimba kwa zolumikizira za pansi pa nyanja– Ma jumper a pansi pa nyanja amagwiritsa ntchito zolumikizira zamagetsi zomwe zimafuna ovality ≤ 0.2% ya OD. Womic idagwiritsa ntchito njira yolondola ya ERW yotsatiridwa ndi zojambula zozizira ndi kuwongola ma roller. Ovality yomaliza yoyezedwa: chitoliro cha 4″ 0.12-0.18%, chitoliro cha 6″ 0.10-0.15%, chitoliro cha 2″ 0.08-0.12%. Zonse zadutsa.
4. Kuyesa dzimbiri pa kutentha kokwera (40°C mu FeCl₃)– Njira ya G48 Muyezo A ndi 22°C; kasitomala amafunika 40°C (yoopsa kwambiri). Womic adachita mayeso a dzenje pa 40°C kwa maola 72 - osayika dzenje pa chitsanzo chilichonse (chitsulo choyambira kapena weld). Kukana kwa dzenje la chitsulo chosungunula kunatsimikiziridwa kuti ndikofanana ndi chitsulo choyambira.
5. Kutsata kuchokera ku ingot kupita ku chitoliro chomalizidwa- Ntchito za pansi pa nyanja zimafuna kutsata bwino zinthu zonse. Womic adapereka manambala apadera a mapaipi ndipo adatsata chitoliro chilichonse kuyambira pa nambala ya kutentha mpaka kuwunika komaliza. Phukusi la zikalata linali ndi masamba 1,200 a MTCs, malipoti a NDT, ndi zotsatira za mayeso a dzimbiri. DNV idawunikidwa ndikuvomerezedwa.
6. Malo ochitira zinthu ku Santos Basin fabrication bard– Mapaipi anatumizidwa kuchokera ku Shanghai kupita ku Rio de Janeiro, kenako kupita ku malo opangira zinthu ku Niterói. DNV inawona katundu akunyamulidwa. Matani onse 97 anatumizidwa m'magawo atatu m'miyezi 5. Kutumiza komaliza kunafulumizidwa kuti kukwaniritse nthawi yomaliza ya polojekiti (kunyamula katundu wa ndege wa matani 10 a mapaipi a 2″).
Zotsatira:Ma jumper a pansi pa nyanja adayikidwa mu kotala yoyamba ya 2024. Pambuyo pa miyezi 12 yopangidwa, palibe dzimbiri kapena ming'alu yomwe yanenedwa. Wogwiritsa ntchitoyo wakhazikitsa muyezo pa Alloy 625 wa ma jumper onse oyeretsera omwe ali m'minda yamchere isanayambe. Womic Steel tsopano ndi wogulitsa woyenerera pazofunikira za CRA za wogwiritsa ntchito uyu.
Lumikizanani nafe:
Webusaiti: www.womicsteel.com
Imelo: sales@womicsteel.com
Foni / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568
Chitsulo cha Womic – Mnzanu wodalirika wa mapaipi a ASTM B705 UNS N06625 opangidwa ndi nickel alloy ogwiritsidwa ntchito poyendetsa madzi akuya pansi pa nyanja, ntchito yowawa, machitidwe a madzi a m'nyanja, kukonza mankhwala, ndi ntchito zamafakitale otentha kwambiri padziko lonse lapansi.
Zogulitsa Zofanana
-
Monel 400 (UNS N04400) – Aloyi wa Nikeli-Mkuwa wa...
-
Inconel 718 (UNS N07718) – Kuuma kwa Mvula...
-
Inconel 660 / Aloyi 660 (UNS S66286 / SUH660 / ...
-
Chitoliro Chopanda Msoko cha Inconel 625 – Nikeli Yoyenera Kupita...
-
Inconel 617 (UNS N06617) – Nickel-Chromium-Coba...
-
Inconel 601 (UNS N06601) – Nickel-Chromium Allo...
-
Incoloy 825 (UNS N08825) – Nickel-Iron-Chromium...
-
Incoloy 800H (UNS N08810) – Nickel-Iron-Chromiu...
-
Haynes 230 (UNS N06230) - Nickel-Chromium-Tungs...