1. Ƙarfe Mai Ƙarfi: Ƙarfin Masana'antu da Ƙarfin Kamfani
Womic Steel Group babbar masana'anta ce kuma mai fitar da kaya daga ƙasashen waje a duniya, tana da ƙwarewa sama da shekaru 20 wajen samar da bututun ƙarfe masu jure lalata (CRA) waɗanda suka haɗa da ƙarfen nickel, ƙarfe mai jure wa tsatsa, da titanium. Cibiyar samar da bututun ƙarfe na musamman ta nickel tana amfani da fasahohin walda da yawa masu ci gaba tare da tsauraran matakan shigar zafi da kuma maganin zafi bayan walda don kiyaye juriyar tsatsa da halayen injiniya na ƙarfen:
●Layin Walda Mai Juriya da Wutar Lantarki (ERW):Don diamita daga 6.35mm zuwa 610mm (1/4″ – 24″), kauri daga bango daga 0.5mm zuwa 12.7mm. Walda mai yawan mita tare da ƙarancin zafi don guje wa rabuwa. Ya dace da ƙananan bututun N08825 zuwa matsakaicin diamita don layukan kayan aiki, allurar sinadarai, da bututun sarrafawa.
●Layin EFW (Haɗakar Wutar Lantarki):Don diamita daga 219mm zuwa 1219mm (8″ – 48″), kauri daga bango daga 4.0mm zuwa 50mm. TIG (GTAW) tushen wucewa tare da SAW cika wucewa, ta amfani da ƙarfe mai cikawa (ERNiCrMo-3 ko ERNiCrMo-10) da kuma kariyar iskar gas mara aiki.
●Layin LSAW / SAWL don Alloys na Nickel:Don diamita daga 406mm zuwa 1524mm (16″ – 60″), kauri na bango har zuwa 50mm. Walda mai zurfi a cikin faranti na nickel da aka birgima tare da shigarwar zafi mai sarrafawa.
Ana yin amfani da dukkan bututun da aka yi da nickel a matsayin mai tacewa (maganin zafi) a zafin 980-1040°C, sannan a kashe ruwa ko kuma a sanyaya iska cikin sauri don dawo da juriyar tsatsa da kuma narkar da duk wani abu da ya haifar da carbide ko kuma fashewar ƙarfe, sannan a yi amfani da tsinken tsinkewa da kuma passivation.
Takaddun Shaida na Inganci & Bin Dokoki:
● Takaddun shaida na ISO 9001: 2015
● PED 2014/68/EU (CE Mark) don kayan aiki masu matsin lamba
● EN 10204 3.2 Takaddun shaida tare da tabbatarwa ta ɓangare na uku (TÜV, BV, SGS, LR)
● Dubawa na ɓangare na uku (TPI) wanda SGS, BV, ABS, DNV, TÜV suka amince da shi
● NACE MR0175 / ISO 15156 don sabis mai tsami (H₂S)
● Lambar Boiler da Matsi ta ASME (Sashe na VIII, Raba ta 1) idan an buƙata
Kamfanin Womic Steel yana samar da bututun da aka haɗa da nickel alloy ga ƙasashe sama da 30 a fannin sarrafa sinadarai, samar da taki, makamashin nukiliya, da kuma masana'antun ƙasashen waje.
Sauƙin Samarwa:
● ERW: 6.35–610mm OD × 0.5–12.7mm WT × ≤ 12m
● EFW: 219–1219mm OD × 4.0–50mm WT × ≤ 12m (ya fi tsayi idan an buƙata)
● LSAW: 406–1524mm OD × 6.0–50mm WT × ≤ 18m
● Zaɓuɓɓukan gamawa: An rufe da kuma an yayyanka, mai haske a rufe (don ƙananan bututu)
2. ASTM B705 UNS N08825: Tsarin Kayan Aiki da Halayen Aiki
UNS N08825 (Incoloy 825) wani ƙarfe ne na nickel-iron-chromium wanda aka ƙara masa molybdenum, jan ƙarfe, da titanium. An ƙera shi don samar da juriya mai kyau ga acid mai ragewa da kuma oxidizing, da kuma fashewar da ke haifar da sinadarin chloride (SCC) da kuma ramin rami. Ƙarin titanium yana daidaita ƙarfen daga harin da ke tsakanin granular bayan walda (kamar ƙarfe mai ƙarfi). Babban sinadarin nickel (38-46%) yana ba da juriya mai kyau ga chloride SCC, yayin da chromium da molybdenum ke ba da juriya ga ramin rami. Tagulla yana ƙara juriya ga sulfuric da phosphoric acid.
Sinadaran da Aka Haɗa (Binciken Ladle, kashi ta hanyar nauyi):
| Sinadarin | UNS N08825 (ASTM B705) |
| C | ≤ 0.050 (yawanci ≤ 0.025) |
| Mn | ≤ 1.00 |
| P | ≤ 0.030 |
| S | ≤ 0.030 |
| Si | ≤ 0.50 |
| Cr | 19.5 – 23.5 |
| Ni | 38.0 – 46.0 |
| Mo | 2.5 – 3.5 |
| Cu | 1.5 – 3.0 |
| Ti | 0.6 – 1.2 |
| Al | ≤ 0.20 |
| Fe | Daidaito |
Kayayyakin Inji (Zafin Ɗaki, An Haɗa Maganin):
| Kadara | UNS N08825 |
| Ƙarfin Yawa (ƙananan, kashi 0.2%) | 240 MPa (35,000 psi) |
| Ƙarfin Tauri (minti) | 550 MPa (80,000 psi) |
| Tsawaita (ma'auni, ma'aunin mm 50) | Kashi 30% |
| Tauri (na yau da kullun) | 75-85 HRB |
Sifofin Jiki:
● Yawan yawa: 8.14 g/cm³
● Modulus na Juyawa: 195 GPa (28.3 × 10⁶ psi)
● Tsarin watsa zafi: 11.1 W/m·K a 100°C
● Ma'aunin Faɗaɗawar Zafi: 14.0 × 10⁻⁶/°C (20-100°C)
Juriyar Tsatsa:
● Kyakkyawan juriya ga sinadarin sulfuric acid a cikin nau'ikan abubuwan da ke tattare da shi (har zuwa kashi 96% a yanayin zafi mai matsakaici)
● Kyakkyawan juriya ga sinadarin phosphoric acid (tsarin danshi) wanda ke ɗauke da chlorides da fluorides
● Kyakkyawan juriya ga nitric acid da kuma Organic acid
● Kyakkyawan juriya ga fashewar dattin chloride (SCC)
● Kyakkyawan juriya ga tsatsa da kuma tsatsa a cikin mahalli na chloride (PREN ≈ 30-35)
● Yana jure tsatsa tsakanin granular bayan walda (titanium ya daidaita)
● Ya dace da amfani da tsami (NACE MR0175) har zuwa matsin lamba mai yawa na H₂S
Iyakokin Tsabta (Kimanin):
● Sulfuric acid (H₂SO₄): Ana iya amfani da shi har zuwa kashi 96% na yawan amfani a zafin ɗaki; an iyakance shi a tafasa.
● Acid na Phosphoric (H₃PO₄): mai kyau har zuwa 80% a 100°C
● Hydrochloric acid (HCl): an iyakance shi ga narkewa (< 5%) a zafin ɗaki
● Nitric acid (HNO₃): yana da kyau har zuwa kashi 40% a matsakaicin yanayin zafi
3. Tsarin Girma da Bin Ka'idoji
| Abu | Ƙayyadewa |
| Daidaitacce | ASTM B705 / ASME SB-705 (bututu); ASTM B709 (bututu) |
| Tsarin Masana'antu | ERW, EFW, da LSAW |
| Nisan Diamita na Waje | ERW: 6.35 - 610mm; EFW/LSAW: 219 - 1524mm |
| Nisan Kauri na Bango | ERW: 0.5 - 12.7mm; EFW/LSAW: 4.0 - 50mm |
| Tsarin Jadawali | 5S, 10S, 40S, 80S (don NPS 1/8″ – 48″) |
| Nisan Tsawon | Daidaitacce: 6m; An tsawaita: 12m, 18m, har zuwa 18m (ya fi tsayi idan an buƙata) |
| Ƙarshen Ƙarshe | Ƙarshen da aka Fito (PE), Ƙarshen da aka Yi Beveled (BE) |
| Ƙarshen Fuskar | An yi wa ado da kuma an yi wa ado da kyau, an yi wa ado da kyau |
| Juriya | OD: ±0.5% ko ±3.2mm; WT: ±12.5% (ga kowace ASTM B775); Tsawon: +50mm / -0mm |
4. Girman da ake da su da kuma ƙayyadaddun bayanai – ASTM B705 UNS N08825 Bututun Alloy Nickel da aka ƙera da walda (Girman da aka zaɓa)
| NPS | OD (mm) | Jadawalin Jadawalin | WT (mm) | Nauyi (kg/m) | Tsawon Daidaitacce | Aikace-aikacen da Aka saba |
| 1/2" | 21.3 | 40S | 2.77 | 1.27 | 6m | Allurar sinadarai |
| 3/4" | 26.7 | 40S | 2.87 | 1.69 | 6m | Layukan kayan aiki |
| 1" | 33.4 | 40S | 3.38 | 2.50 | 6m | Layukan ciyar da acid |
| 1-1/2" | 48.3 | 40S | 3.68 | 4.05 | 6m | Bututun tsari |
| 2" | 60.3 | 40S | 3.91 | 5.44 | mita 6 / mita 12 | Sinadarin Sulfuric |
| 3" | 88.9 | 40S | 5.49 | 11.3 | mita 6 / mita 12 | Acid na Phosphoric |
| 4" | 114.3 | 40S | 6.02 | 16.1 | mita 6 / mita 12 | Layukan na'urar tururi |
| 6" | 168.3 | 40S | 7.11 | 28.3 | mita 6 / mita 12 | Wurin fitar da FGD |
| 8" | 219.1 | 40S | 8.18 | 42.6 | mita 12 | Layin tsami na bakin teku |
| 10" | 273.0 | 40S | 9.27 | 60.3 | mita 12 | Farfado da acid |
| 12" | 323.9 | 40S | 10.31 | 79.8 | mita 12 | Babban kan acid |
| 16" | 406.4 | 40S | 12.70 | 123.4 | mita 12 | Sake sarrafa makaman nukiliya |
| 20" | 508.0 | 40S | 15.09 | 183.5 | mita 12 | Babban diamita |
| 24" | 609.6 | 40S | 17.48 | 255.5 | mita 12 | Aikace-aikacen musamman |
*Akwai ma'aunin da aka keɓance a wajen waɗannan jeri. Bututun da aka haɗa na N08825 suna buƙatar tsawon lokacin ja (mafi ƙarancin kwanaki 60) saboda takamaiman tsiri/faranti.*
5. Ma'aunin Alloy na Nickel da aka saba da shi da kuma maki da Womic Steel ya ƙera
| Daidaitacce | Karfe / Alloy maki | Aikace-aikacen da Aka saba | Tsarin Walda |
| ASTM B705 | UNS N08825 (Incoloy 825) | Sulfuric, phosphoric acid | EFW/LSAW/ERW |
| ASTM B709 | UNS N08825 | Bututun lantarki, mai musayar zafi | ERW |
| ASTM B619 | UNS N06022 (Hastelloy C-22), N10276 (C-276) | Mai lalata sosai | EFW/LSAW |
| ASTM B622 | UNS N06022, N10276 | Bututun shawa | ERW |
| ASTM B464 | UNS N08020 (Na'urar Gasa 20) | Sinadarin Sulfuric | EFW |
| ASTM B729 | UNS N08020 | Bututun shawa | ERW |
Amfani:Tsirrai masu ɗauke da sinadarin acid (H₂SO₄, H₃PO₄, HNO₃), sake sarrafa makaman nukiliya, hidimar tsami a ƙasashen waje, FGD, da kuma tankunan sinadarai.
6. Tsarin Kerawa – Bututun Alloy Nickel da aka Walda (ERW, EFW, LSAW)
Walda da aka yi da nickel yana buƙatar kulawa sosai kan shigar zafi da kuma maganin zafi bayan walda don kiyaye juriyar tsatsa. Alloy 825 yana da daidaito a titanium, amma yawan shigar zafi har yanzu yana iya haifar da jin daɗi ko rabuwa.
Tsarin Walda Mai Juriya da Wutar Lantarki (ERW) – Ƙarami zuwa Matsakaicin Diamita (6.35–610mm OD):
●Duba Kayan Danye (Teri/Coil):An tabbatar da cewa an haɗa layin ƙarfe na nickel da sinadarin N08825 (Ni 38-46%, Cr 19.5-23.5%, Mo 2.5-3.5%, Cu 1.5-3.0%, Ti 0.6-1.2%). Kowace na'ura tana da lambar zafi ta musamman tare da cikakken ikon gano ta.
●Buɗewa da Daidaita Daidaito
●Gyaran Gefen Zaren ...
●Ƙirƙira:Ci gaba da yin birgima.
●Walda Mai Yawan Mita:Ƙarancin shigar da zafi (≤ 1.2 kJ/mm) don hana rabuwa. Walda a cikin yanayi mara aiki (kariyar argon) don guje wa iskar shaka.
●Ruwan ɗaurewa:Ƙara yawan fitar da iska (induction annealing) sai kuma sanyaya da sauri.
●Girman da Daidaitawa
●Yankan Zuwa Tsawon
●NDT:Gwajin halin yanzu na Eddy (100%) + zaɓin UT.
●Maganin rufewa (Cikakken Bututu):980-1040°C, kashe ruwa (ko kuma sanyaya iska cikin sauri). Dole ne a dawo da juriyar tsatsa.
●Gwajin Hydrostatic
●Pickling & Passivation(ta amfani da cakuda acid na musamman don ƙarfe nickel)
●PMI (XRF) da Ferrite check (babu ferrite a cikin nickel alloy)
●Dubawa da Alamar Ƙarshe
Tsarin EFW (Haɗakar Wutar Lantarki) – Babban Diamita (219–1219mm OD, 4.0–50mm WT):
●Shirin Faranti:Farantin gami na nickel, gefuna masu ƙyalli (X bevel).
●Tsarin Naɗi
●Walda a Tackle
●Tushen Hanyar TIG (GTAW):ƙarfe mai haɗawa (ERNiCrMo-3 ko ERNiCrMo-10), iskar gas mai goyan bayan argon tare da mai karɓar iskar oxygen.
●Cika da Murfi na SAW:Ƙaramin shigarwar zafi (≤ 1.5 kJ/mm), zafin shiga tsakanin ≤ 150°C. Fitowar musamman don ƙarfen nickel (ƙaramin sulfur).
●Walda ta Ciki (don manyan diamita)
●100% RT + UT(bisa ga ASTM B775)
●Maganin Rufewa:Cikakken maganin zafi na bututu (980-1040°C), kashe ruwa.
●Pickling & Passivation
●Gwajin Hydrostatic
●Binciken PMI & Girma
●Alamar
Tsarin LSAW don Alloys na Nickel - Girman Diamita Mai Girma (406–1524mm OD, 6.0–50mm WT):
● UOE ko JCOE da ke samuwa daga farantin ƙarfe na nickel
● Walda mai gefe biyu ta SAW tare da ƙarancin zafi
● Cikakken maganin shafawa bayan walda
Mahimman Mahimman Mahimman Mahimman Mahimman Ma'auni don Walda N08825:
● Shigar da zafi: ≤ 1.5 kJ/mm (maƙasudin ≤ 1.2 kJ/mm)
● Zafin jiki na Interpass: ≤ 150°C
● Iskar gas mai kariya: Argon (100%) don TIG; argon + helium don SAW
● Tsaftacewa: Tsaftace mai sosai kafin walda (ƙarancin sinadarin nickel yana shafar sinadarin sulfur da gubar)
● Rufe ruwan da ke cikin ruwan: 980-1040°C, kashe ruwan - dole ne.
● Babu ferrite a cikin ƙarfen walda (walda mai haɗin nickel ba ta da cikakken austenitic)
7. Tsarin Kula da Inganci da Gwaji don Bututun Alloy na Nickel da aka Walda na ASTM B705 UNS N08825
| Matakin mataki | Hanyar Dubawa | Manufa |
| Albarkatun kasa | Binciken Sinadarai (OES ko ICP) | Tabbatar da iyakoki N08825 (Ni, Cr, Mo, Cu, Ti, Fe) |
| Albarkatun kasa | Gwajin Taurin Kai | Yawan aiki ≥ 240 MPa, Tashin hankali ≥ 550 MPa |
| Albarkatun kasa | Tauri | 75-85 HRB na yau da kullun |
| Albarkatun kasa | Gwajin Tsatsa (ASTM G28) | Juriyar Tsatsa Tsakanin Granular (don mahimmancin aikin acid) |
| A Cikin Aiki | Kula da Shigar da Zafi | ≤ 1.5 kJ/mm |
| A Cikin Aiki | Zafin Zafin Tsakiyar Wuri | ≤ 150°C |
| Walda (ERW) | Eddy Current (100%) | daidaiton walda |
| Walda (EFW/LSAW) | 100% UT (ko PAUT) | Gano lahani na walda |
| Walda (EFW/LSAW) | RT (10-100% a kowace takamaiman bayani) | Ingancin walda |
| Walda | Rini Mai Shiga Jiki (PT) | Fashewar saman |
| Bayan An Shafa Maganin | Gwajin Tauri | Tabbatar da yanayin maganin da aka shafa |
| Bututun da aka gama | Gwajin Hydrostatic | Ingancin matsin lamba |
| Bututun da aka gama | PMI (XRF) | Tabbatar da maki (Ni, Cr, Mo) |
| Bututun da aka gama | Gwajin Tsatsa (ASTM G28 Aiki A) | Juriyar IGC (idan an ƙayyade) |
| Bututun da aka gama | Na gani & Alamar | Bin diddigin abubuwa |
Gwaje-gwaje na Zaɓaɓɓu don Ayyukan Mahimmanci:
● ASTM G28 Practice A (50% H₂SO₄ – ferric sulfate) don juriya ga tsatsa tsakanin granular
● Gwajin ASTM G48 na rami (a cikin FeCl₃, 6% a 40°C) don juriya ga ramin chloride
● Gwajin HIC/SSC don maganin tsami (NACE TM0284, TM0177)
● Gwajin matsin lamba mai ƙarfi (misali, a 300°C)
● Ma'aunin Ferrite (ya kamata ya zama ƙasa da kashi 1% ga ƙarfen nickel)
8. Babban Aikace-aikacen - ASTM B705 UNS N08825 Bututun Alloy na Nickel da aka Welded
●Tsire-tsire masu sinadarin sulfuric:Yana sarrafa sinadarin oleum (H₂SO₄ + SO₃), sinadarin acid mai ƙarfi (96-98%), sinadarin acid mai narkewa (5-10%), da bututun sanyaya sinadarin acid. Yana maye gurbin ƙarfen bakin ƙarfe da ke lalacewa da sauri.
●Samar da sinadarin phosphoric acid (tsarin danshi):Masu fitar da iska, masu sanyaya iska, da kuma bututun da ke amfani da sinadarin phosphoric acid tare da chlorides da fluorides. Alloy 825 yana tsayayya da yanayin iskar oxygen da kuma rage iskar oxygen.
●Sake sarrafa man fetur na nukiliya:Kula da man fetur na nukiliya da aka kashe wanda aka narkar da shi a cikin nitric acid tare da fluoride. N08825 yana tsayayya da tsatsa a cikin wannan yanayi mai matuƙar tsauri (ana amfani da shi a masana'antar Magnox da THORP).
●Sabis mai tsami na bakin teku:Ana samar da mai da iskar gas tare da matsin lamba mai yawa na H₂S (har zuwa mashaya 10) tare da babban chlorides da yanayin zafi har zuwa 200°C. NACE MR0175 ya cancanta.
●Sanyaya ruwan teku (zafin jiki mai yawa):Tsarin sanyaya ruwa a matatun ruwa na bakin teku da kuma tashoshin samar da wutar lantarki inda zafin ruwan teku ya wuce digiri 45 (inda 2205 har ma da babban duplex na iya yin ramuka). N08825 yana hana yin ramuka har zuwa digiri 80 na Celsius.
●Bututun fitar da iskar gas mai narkewa (FGD):A ƙasan ma'adinan shaye-shaye inda akwai iskar gas mai ɗauke da sinadarin chloride. Alloy 825 misali ne na bututun fitarwa da layukan tara.
●Tankunan sinadarai:Bututun ɗaukar kaya don sinadarai masu ƙarfi, gami da sulfuric acid, phosphoric acid, da kuma Organic acid. Manyan kamfanonin jigilar sinadarai sun amince da N08825.
●Tsire-tsire masu tsire-tsire da kuma sake farfaɗo da acid:Sinadarin hydrochloric acid (wanda aka narkar) da kuma gaurayen layukan tsinken acid don samar da bakin karfe.
●Maganin ruwan shara:Sharar masana'antu masu yawan lalatawa daga masana'antun sinadarai (gaurayen acid, ƙarfe masu nauyi, chlorides).
9. Marufi da Jigilar Kaya – ASTM B705 UNS N08825 Bututun Alloy na Nickel da aka Walda
Marufi:
●Kariyar hana lalata:Naɗe filastik ko takardar VCI. Don yin amfani da sinadarai, ba a yarda da ragowar mai ba (rufewa mai tsafta).
●Ƙarshen maƙallan:Murfin filastik masu nauyi (wanda aka yi masa laƙabi da launi - yawanci orange ne akan N08825).
●Haɗawa (Ƙananan diamita):Kowace bututu a naɗe ta daban-daban, sannan a haɗa ta da madauri marasa ƙarfe (a guji taɓa madaurin ƙarfe don hana gurɓatawa).
●Marufi ɗaya ɗaya (Babban diamita):Naɗe fim ɗin filastik tare da zoben kumfa tsakanin bututu.
●Akwatunan katakodon aikace-aikace masu mahimmanci (nukiliya, magunguna).
Jigilar kaya:
● Kwantena masu girman ≤ 610mm, masu girman break-bull don manyan diamita.
●Takardu:MTC 3.1/3.2 (EN 10204), rahoton gwajin hydro, rahotannin UT/RT, rahoton PMI, rahoton gwajin tsatsa (ASTM G28 idan an ƙayyade), rahoton girma, jerin marufi, COO. Cikakken bin diddigin bayanai daga lambar zafi zuwa bututun da aka gama.
10. Amfanin Karfe da Tambayoyin da Ake Yawan Yi – ASTM B705 UNS N08825 Bututun Alloy na Nickel da aka Walda
Me Yasa Za A Yi Haɗi Da Womic Steel Don Bututun Walda Na N08825?
● Cikakken Girman: ERW 1/4″ – 24″, EFW/LSAW 8″ – 48″.
● Cikakkiyar maganin rage zafi bayan walda (980-1040°C, kashe ruwa).
● Gwajin tsatsa tsakanin granular bisa ga ASTM G28 yana samuwa (wajibi ne don aikin acid).
● Takardar shaidar NACE MR0175 don hidimar tsami.
● Tsarin kula da inganci mai tsauri - babu ferrite a cikin ƙarfen walda.
● Lokacin gasa don bututun ƙarfe na nickel: kwanaki 60-75 don ERW, kwanaki 75-90 don EFW.
Tambayoyin da Ake Yawan Yi (Tambayoyin da Ake Yawan Yi) – ASTM B705 UNS N08825 Bututun Walda
T: Menene bambanci tsakanin Incoloy 825 (N08825) da Alloy 20 (N08020)?
A: Ana amfani da duka biyun don hidimar sinadarin sulfuric acid. Alloy 20 (N08020) yana da ƙananan nickel (32-38%) da kuma mafi girman chromium (19-21%) tare da jan ƙarfe. N08825 yana da mafi girman nickel (38-46%) da molybdenum (2.5-3.5%) tare da daidaita titanium. N08825 yana da mafi kyawun juriya ga pitting da chloride SCC kuma ya fi dacewa da sabis mai tsami (H₂S). Alloy 20 ya fi araha ga phosphoric acid da diluted sulfuric acid ba tare da chlorides ba. Sau da yawa ana ƙayyade N08825 don yanayi mafi tsauri.
T: Shin N08825 yana jure wa sinadarin sulfuric acid a duk wani abu da aka tara?
A: A'a. N08825 yana da kyau ga sinadarin sulfuric acid har zuwa kusan kashi 60% a yanayin zafi har zuwa digiri 100, da kuma yawan da ke tsakanin kashi 85-96% a yanayin zafi na ɗaki. A matsakaicin yanayi (60-85%) da kuma a yanayin zafi mafi girma, yawan tsatsa na iya zama mai yawa. Ga H₂SO₄ mai yawan zafin jiki (> 90%, > 150°C), ana iya buƙatar ƙarfe na musamman kamar Hastelloy C-276. Koyaushe duba jadawalin tsatsa don takamaiman yanayi.
T: Shin N08825 yana buƙatar maganin zafi bayan walda bayan walda?
A: Ga yawancin aikace-aikace, ana iya amfani da N08825 a yanayin da aka haɗa da walda saboda daidaita titanium yana hana jin daɗi. Duk da haka, ASTM B705 yana buƙatar annealing na mafita (maganin zafi) don bututun walda don dacewa da halayen injiniya da juriya ga tsatsa. Womic yana yin annealing na mafita akan duk bututun walda. Don walda a filin, ba a buƙatar PWHT don N08825.
T: Wane ƙarfe mai cike walda aka ba da shawarar don N08825?
A: Ana amfani da AWS A5.14 ERNiCrMo-3 (Inconel 625) ko ERNiCrMo-10 (Inconel 622) don walda N08825. Mai cikewa mai dacewa zai zama ERNiCrMo-3. Womic tana amfani da ERNiCrMo-3 don hanyoyin EFW. Don walda a filin, ana ba da shawarar mai cikewa iri ɗaya.
T: Za a iya amfani da N08825 don hidimar ruwan teku?
A: Eh. N08825 yana da kyakkyawan juriya ga tsatsa da tsatsa a cikin ruwan teku, koda a yanayin zafi mai yawa (har zuwa 80°C). Sau da yawa ana zaɓarsa don tsarin sanyaya ruwan teku a matatun mai da kuma tashoshin wutar lantarki na bakin teku inda super duplex (2205) na iya fuskantar tsatsa a yanayin zafi mai girma. Duk da haka, ga yawancin aikace-aikacen ruwan teku, duplex ko super duplex ya isa kuma ya fi araha. An keɓe N08825 ga tsarin ruwan teku tare da ƙarin sinadarai masu lalata (misali, ruwan teku mai chlorine, gurɓataccen acid).
T: Shin N08825 ya dace da amfani da tsami (H₂S)?
A: Eh. An cancanci N08825 bisa ga NACE MR0175/ISO 15156 don yin amfani da tsami tare da matsin lamba na H₂S har zuwa sandar 1 (15 psi) ko sama da haka, ya danganta da ikon sarrafa tauri. Sau da yawa ana amfani da shi don bututun ƙasa, hanyoyin kwarara, da bututun sarrafawa a cikin filayen mai da iskar gas inda 2205 duplex bai isa ba saboda yawan H₂S ko chlorides.
T: Menene lokacin jagora na yau da kullun don bututun UNS N08825 da aka haɗa?
A: Kwanaki 60-75 na ERW (ƙananan diamita zuwa matsakaici), kwanaki 75-90 na EFW/LSAW (babban diamita). Lokacin jagora ya fi na ƙarfe bakin ƙarfe tsayi saboda ana samar da tsiri/faranti na ƙarfe a ƙananan adadi tare da tsawon lokacin jagorancin niƙa. Binciken ɓangare na uku yana ƙara kwanaki 7-14. Umarnin gaggawa (kwanaki 45-60) na iya yiwuwa ga girman da aka saba idan kayan suna cikin kaya.
T: Menene matsakaicin zafin aiki na N08825?
A: Ana iya amfani da N08825 a ci gaba da aiki har zuwa 550°C (1020°F) a cikin muhallin da ba shi da acid. Don aikin lalata, matsakaicin zafin jiki yana iyakance ta hanyar corrodent. A cikin sulfuric acid, aikin yawanci yana iyakance zuwa <100°C; a cikin phosphoric acid zuwa <150°C. Don aikin oxidizing mai zafi mai zafi, ana ba da shawarar ƙarfe masu chromium mafi girma (kamar Alloy 600, 601, ko 625).
Nassoshi kan Aikin - Injin Gyaran Tukunyar Sulfuric Acid ta Arewacin Amurka da Sauya Bututu
Ƙasa:Amurka (Louisiana, hanyar sinadarai ta Gulf Coast)
Daidaitacce & Matsayi:ASTM B705 UNS N08825 (Incoloy 825)
Girma da Adadi:
● Tsarin OD 219.1mm (8″) × Jadawalin 40S (8.18mm WT) – mita 600 (kimanin tan 20) – Tsarin EFW
● Tsarin OD 168.3mm (6″) × Jadawalin 40S (7.11mm WT) – mita 400 (kimanin tan 10) – Tsarin EFW
● OD 88.9mm (3″) × Jadawalin 40S (5.49mm WT) – mita 800 (kimanin tan 8) – Tsarin ERW
● OD 60.3mm (2″) × Jadawalin 80S (5.54mm WT) – mita 1,000 (kimanin tan 6) – Tsarin ERW
Jimilla:Mita 2,800, kimanin tan 44
Bayani dalla-dalla:Maganin ASTM B705 UNS N08825 da aka shafa a hankali kuma aka cire shi, aka yanke ƙarshensa. Gwajin Hydrostatic. 100% UT don bututun EFW, eddy current + UT don ERW. PMI akan kowane bututu. Gwajin lalata tsakanin granular da aka yi bisa ga ASTM G28 Practice A (hanyar ferric sulfate-sulfuric acid) - ƙimar lalata ƙasa da 10 mpy (mil a kowace shekara). Gwajin juriyar Hydrofluoric acid (takamaiman abokin ciniki). Dubawa na ɓangare na uku ta SGS USA.
Aikace-aikace:Sauya bututun reboiler na acid da layukan aiki da ke da alaƙa a cikin masana'antar sake farfaɗo da acid na sulfuric. Masana'antar tana dawo da sinadarin sulfuric acid da aka kashe daga na'urorin alkylation (matatun mai) ta hanyar rugujewar zafi da sake farfaɗowa. Man fetur ɗin yana sarrafa sinadarin sulfuric acid mai zafi (85-95% H₂SO₄) a 150-200°C a cikin sashin reboiler, kuma yana rage acid (5-10% H₂SO₄) a 80-100°C a cikin sashin quench. Bututun Alloy 20 (N08020) da ya gabata ya gaza bayan shekaru 4 saboda tsatsa da tsatsa tsakanin granular. An zaɓi N08825 saboda juriyarsa ga acid mai ƙarfi da mai narkewa, da kuma daidaita titanium ɗinsa.
Kalubalen Fasaha da Magani:
●Sinadarin sulfuric mai yawan zafin jiki (85-95%, 150-200°C)– Alloy 20 yana lalata wutar lantarki a ƙimar fiye da 50 mpy a ƙarƙashin waɗannan yanayi. N08825 tare da yanayin annealed na mafita da ingantaccen aikin ƙarfe ya samar da ƙimar tsatsa < 5 mpy a cikin gwajin ASTM G28 da kuma a cikin maganin kwaikwaiyo na abokin ciniki (85% H₂SO₄ a 180°C, awanni 336). Womic ta bayar da rahotannin gwajin injin niƙa da takardun shaida na gwajin tsatsa.
●Haɗarin tsatsa tsakanin granular bayan walda– Duk da cewa N08825 yana da daidaito a titanium, shigar da zafi mara kyau yayin ƙera na iya haifar da ruwan sama na chromium carbide a iyakokin hatsi. Shigar da zafi na walda mai sarrafawa zuwa ≤ 1.2 kJ/mm kuma an yi cikakken aikin tacewa bayan walda. Gwajin ASTM G28 akan samfuran walda ya nuna ƙimar tsatsa 4-7 mpy (ƙasa da iyakar mpy 10).
●Cancantar tsarin walda na filin– Ana buƙatar ƙungiyar kula da masana'anta don yin gyaran filin. Womic ta samar da takardun shaida guda 20 na walda na Jadawali 40S mai inci 6 tare da shawarar WPS: GTAW tare da cika ERNiCrMo-3, goyon bayan argon 100%, interpass ≤ 150°C. Takardun shaida sun wuce gwajin rediyo, PT, da ASTM G28. Ƙungiyar walda ta abokin ciniki ta ba da takardar shaidar aikin.
●Tabbatar da PMI - bambanta N08825 daga ƙananan ƙarfe– Haɗarin haɗa N08825 da Alloy 825 (UNS iri ɗaya) idan aka kwatanta da Alloy 625 (nau'in abun da ke ciki daban-daban). Womic ta yi XRF a kan kowane bututu kuma ta yi wa kowanne lakabi da alamun launi (lemu na 825). Babu wani gauraye da ya faru.
●Kayan aiki yayin da ake shirin gyarawa (rufewa na tsawon makonni 4)– An jigilar bututun daga Shanghai zuwa New Orleans, sannan aka kai su wurin da ke Louisiana. An kawo dukkan tan 44 kwanaki 10 kafin a fara jigilar su. Womic ta bayar da takaddun shaida na injin niƙa mai takardar shaida (EN 10204 Type 3.2) da rahotannin gwajin tsatsa a gaba don amincewa da QA na abokin ciniki.
Sakamako:An sake fara aikin samar da sinadarin acid bayan an gyara shi. Bayan watanni 12 na aiki, duba bututun N08825 ya nuna babu tsatsa mai aunawa, babu tsagewa, kuma babu wani hari tsakanin granular. Abokin ciniki ya kiyasta cewa sabon bututun zai ɗauki shekaru 15+ (idan aka kwatanta da shekaru 4 na Alloy 20). An ƙara Womic Steel cikin jerin kayan da masana'antar ta amince da su don maye gurbin sinadarai masu amfani da acid a nan gaba.
Tuntuɓi:
Yanar Gizo: www.womicsteel.com
Imel: sales@womicsteel.com
Waya / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568
Womic Steel – Abokin hulɗarka mai aminci ga bututun ƙarfe na nickel da aka ƙera na ASTM B705 UNS N08825 don shuke-shuken acid na sulfuric da phosphoric, sake sarrafa nukiliya, hidimar tsami a ƙasashen waje, da kuma amfani da ruwan teku mai zafi a duk duniya.
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