1. Womic Steel: Ubushobozi bwo gukora n'imbaraga z'ikigo
Womic Steel Group ikora imiyoboro myinshi ya LSAW ikoreshwa mu buryo bwihariye mu gukurura inkuta nini n'ubugari bunini. Imiyoboro ya ASTM A252 yo mu cyiciro cya 3 ikenera ubushobozi bwo kugenda neza no gukoresha ikoranabuhanga rihoraho kugira ngo ikoreshwe mu kibuga (hammering) idacikagurika.
● Umurongo wa JCOE:Ku murambararo wa mm 406 – 1,422 (16″–56″), ubugari bw'urukuta bugera kuri mm 50.8. Bikwiriye ku rukuta rw'ibiraro n'urw'inyubako.
●Umurongo wa UOE:Ku murambararo wa mm 508 – 1,220 (20″–48″), ubugari bw'urukuta bugera kuri mm 40. Ikora imirundo miremire cyane yo kwihanganira gutwara cyane.
●Isahani izingijwe (Umugozi umwe – Urukuta ruremereye):Ku mpande z'umurambararo wa mm 600 – 3.500 (24″–138″), ubugari bw'urukuta kuva kuri mm 25 kugeza kuri mm 100. Ifite isahani imwe izingiye kandi ihambiriwe mu buryo burambuye. Ni nziza ku mpande nini zo mu mazi n'izifite uburebure bwa jacket zo mu nyanja.
● Isahani izungurutse (Umushono Ubiri):Ku murambararo wa mm 1,200 – 3,500 (48″–138″), ubugari bw'urukuta bugera kuri mm 100. Imirongo ibiri miremire. Ikoreshwa ku migozi minini y'ishingiro ry'inyanja.
Ubushobozi bwose bwa LSAW burenga toni 300.000 buri mwaka, aho umusaruro w’imiyoboro yo gukurura imashini urenga toni 120.000 ku mwaka. Womic Steel ifite ISO 9001, CE (EN 10219, EN 10248), kandi ishobora gutanga igenzura ry’abandi na SGS, BV, ABS, DNV, na TÜV. Imiyoboro yo gukurura imashini irenga kilometero 500 itangwa ku isi yose ku byambu, ibiraro, no ku rufatiro rw’inyanja.
Uburyo bworoshye bwo gukora kuri ASTM A252 Grade 3:
●JCOE: 406–1.422mm OD × 6.0–50.8mm Ubwinshi × ≤ 18m
●UOE: 508–1,220mm OD × 6.0–40.0mm Ubwinshi × ≤ 24m
●Isahani izingijwe (umushono umwe): 600–3.500mm OD × 25–100mm Uburemere × ≤ 18m (kugeza kuri 60m ukoresheje gusudira ibice byinshi)
●Isahani izungurutse (umushono ubiri): 1,200–3,500mm OD × 25–100mm Ubwinshi × ≤ 18m
Ku burebure bukabije kugeza kuri metero 60, Womic ishobora gusudira ibice byinshi kuva ku mpera kugeza ku mpera ikoresheje uburyo bwose bwo gusudira bwa SAW circumferential (bwagenzuwe na UT 100%). Izi pile ndende zigabanya uduce tw'umurima mu gihe cyo gushyiraho.
2. ASTM A252 Icyiciro cya 3: Imiterere y'ibikoresho n'imikorere yabyo
ASTM A252 Icyiciro cya 3 ni cyo gipimo cy’imbaraga nyinshi mu bipimo bya A252 ku miyoboro y’ibyuma ishongeshejwe kandi idasobanyije. Ingufu nke z’umusaruro ni 345 MPa (50.000 psi) n’imbaraga zo gukurura 455 MPa (66.000 psi). Bitandukanye na API 5L, A252 ntabwo ifite PSL1/PSL2 mu byiciro ariko isaba ubushobozi bwo kugenda neza (kure) no gusongera neza kugira ngo igende neza mu kibuga.
Imiterere y'ibinyabutabire (ntarengwa % ku buremere - bisanzwe ku rwego rwa 3, ASTM A252 ntabwo itegeka imipaka ihamye):
| Igice | Ingano Isanzwe (Icyuma cya Womic) |
| C | 0.20 – 0.26 |
| Mn | 0.80 – 1.30 |
| P | ≤ 0.030 |
| S | ≤ 0.030 |
| Si | 0.15 – 0.40 |
| CEV | ≤ 0.45 (ibisanzwe ≤ 0.42) |
Womic ikoresha urugero rwa karuboni na manganese rugenzurwa kugira ngo igere ku mbaraga zo mu cyiciro cya 3 mu gihe ikomeza kuba nziza cyane kandi ikanashobora gusudira mu murima.
Imiterere ya mekanike (Ubushyuhe bw'icyumba):
| Umutungo | Icyiciro cya 3 cya ASTM A252 |
| Imbaraga z'umusaruro (iminota) | 345 MPa (50,000 psi) |
| Imbaraga zo Gufata (iminota) | 455 MPa (66,000 psi) |
| Uburebure (iminota) | 20% (kuri 50mm gauge) |
| Ubukomere (busanzwe) | 75-85 HRB |
Kugereranya n'amanota ya ASTM A252:
| Icyiciro | MPa y'umusaruro (iminota) | MPa yo gukurura (iminota) | Uburyo busanzwe bwo gukoresha |
| Icyiciro cya 1 | 205 | 310 | Umutwaro woroheje, gukusanya by'agateganyo |
| Icyiciro cya 2 | 240 | 415 | Gushyiraho fondasiyo rusange |
| Icyiciro cya 3 | 345 | 455 | Ingufu zikomeye, umusingi uremereye, ubwato |
Icyiciro cya 3 gikomeye kurusha Icyiciro cya 2 ku kigero cya 40%, bigatuma inkuta zigabanya cyangwa ubushobozi bwo kuremerera bwinshi ku gipimo kimwe.
3. Iyubahirizwa ry'ibipimo n'amahame ngenderwaho
| Ikintu | Ibisobanuro |
| Igisanzwe | ASTM A252 Icyiciro cya 3 (hari n'Icyiciro cya 1, Icyiciro cya 2) |
| Uburyo bwo gukora | JCOE, UOE, isahani izungurutse (umushono umwe/ibiri) |
| Intera y'Ubugari bwo Hanze | 219mm – 3,500mm (8″ – 138″) |
| Ubunini bw'urukuta | JCOE/UOE: 6.0mm – 50.8mm; Isahani izingiye: 25mm – 100mm |
| Intera y'uburebure | Uburebure busanzwe: 6m, 12m, 18m; Uburebure burambuye: kugeza kuri 60m (ibice byasutswe) |
| Irangizwa rya nyuma | Impera Isanzwe (PE), Impera Ifite Imirongo Igororotse (BE), cyangwa ifite imigozi irimo guhuza (iyo ubisabye) |
| Kurangiza ubuso | Ifite ubusa, Irimo amavuta, Ifite umukara, Epoxy, Epoxy y'amakara, Zinc (yashyizwemo galvanis) |
| Kwihanganirana | OD: ± 0.75% cyangwa ± 3.2mm; Uburebure: -0% / + 15%; Uburebure: + 100mm / -0mm yo gukurura (ntibikomeye cyane ugereranyije na API) |
| Kugororoka | ≤ 0.2% by'uburebure (busanzwe) |
4. Ingano n'Ibisobanuro bihari – Umuyoboro w'icyuma wa ASTM A252 Grade 3 LSAW (Ingano zisanzwe zatoranijwe)
| OD (mm) | Amahitamo y'ubwinshi bw'ibipimo (mm) | Inzira | Uburemere bugera kuri (kg/m2) | Uburebure Busanzwe | Uburyo busanzwe bwo gukoresha |
| 219 | 6.4, 8.0, 10.0, 12.5 | JCOE | 33.6 – 63.6 | 12m / 18m | Ishingiro ry'inyubako |
| 273 | 6.4, 8.0, 10.0, 12.5 | JCOE | 42.1 – 80.1 | 12m / 18m | Icyambu cy'ikiraro |
| 324 | 8.0, 10.0, 12.5, 14.0 | JCOE | 62.4 – 107.1 | 12m / 18m | Gushyira ku cyambu |
| 406 | 8.0, 10.0, 12.5, 14.0, 16.0 | JCOE/UOE | 78.5 – 153.9 | 12m / 18m | Ishingiro ry'ikiraro |
| 508 | 10.0, 12.5, 14.0, 16.0, 19.0 | UOE | 122.8 – 229.1 | 12m / 18m / 24m | Gushyira ibirundo mu mazi |
| 610 | 12.5, 14.0, 16.0, 19.0, 22.0 | UOE | 184.2 – 319.1 | 12m / 18m / 24m | Kwagura icyambu |
| 711 | 12.5, 14.0, 16.0, 19.0, 22.0, 25.4 | JCOE/UOE | 215.3 – 429.4 | 12m / 18m | Urubuga rwo hanze y'inyanja |
| 813 | 14.0, 16.0, 19.0, 22.0, 25.4, 30.0 | JCOE | 275.9 – 579.8 | 12m / 18m | Urufatiro rwimbitse |
| 914 | 16.0, 19.0, 22.0, 25.4, 30.0, 35.0 | JCOE/Izinguruwe | 354.4 – 759.2 | 12m / 18m | Caisson y'ikiraro |
| 1,016 | 19.0, 22.0, 25.4, 30.0, 35.0, 40.0 | Izungurutse | 467.1 – 963.9 | 12m / 18m | Aho ubwato buhagarara |
| 1,220 | 22.0, 25.4, 30.0, 35.0, 40.0, 45.0, 50.0 | Izungurutse | 650.0 – 1.450.5 | 12m / 18m | Ikoti ryo mu mazi |
| 1,422 | 25.4, 30.0, 35.0, 40.0, 45.0, 50.0, 60.0 | Izungurutse | 875.1 – 2,016.8 | 12m / 18m | Ibirundo binini byo mu mazi |
| 1,600 | 30.0, 40.0, 50.0, 60.0, 70.0, 80.0 | Izungurutse (ifite kabiri) | 1.162 – 3.000 | 12m / 18m | Ishingiro ry'amazi y'ubujyakuzimu |
| 2,000 | 40.0, 50.0, 60.0, 70.0, 80.0, 90.0 | Izungurutse (ifite kabiri) | 1.933 – 4.240 | Metero 12 | Umushinga ukomeye w'icyambu |
| 2,500 | 50.0, 60.0, 70.0, 80.0, 90.0, 100.0 | Izungurutse (ifite kabiri) | 3,023 – 5,917 | Metero 12 | Imiterere minini y'inyanja |
| 3,000 | 60.0, 70.0, 80.0, 90.0, 100.0 | Izungurutse (ifite kabiri) | 4,351 – 7,149 | Metero 12 | Indaro y'umuyaga yo mu nyanja |
Imiyoboro iremereye yo ku rukuta (≥ 50mm) ishobora gusaba PWHT kugira ngo igabanye imihangayiko isigaye. Ku bidukikije bibi (mu mazi), hashobora gutangwa ubundi buryo bwo kugenzura ubukana bw'imiyoboro iyo ubisabye.
5. Ibipimo rusange n'amanota - Umuyoboro wo gutondeka ibyuma
| Igisanzwe | Ibyiciro by'icyuma | Uburyo busanzwe bwo gukoresha | Uburyo bwo Gutegura |
| ASTM A252 | Icyiciro cya 1, 2, 3 | Guteranya imitako y'ishingiro, ibigega by'amazi | JCOE/UOE/Izinguruwe |
| EN 10248 | S235GP, S275GP, S355GP | Igikoresho cyo gupfunyikaho impapuro zishyushye (umuyoboro) | Izungurutse |
| EN 10219 | S235JRH, S275JRH, S355JRH, S355J2H | Ibice by'imiterere y'ubukonje byashongeshejwe | JCOE/Izinguruwe |
| API 5L | GR.B, X42, X52 | Gukusanya ibyuma bikoresha peteroli/gaze | JCOE/UOE |
| ASTM A500 | GR.B, GR.C | Umuyoboro w'uruziga wubatswe mu nyubako | JCOE |
| BS 7191 | S275, S355 | Inyubako zo mu nyanja | Izungurutse |
Incamake y'ikoreshwa:Imisingi y'ibiraro, imigozi y'icyambu n'icyambu, imigozi y'amakoti yo ku nkombe z'inyanja, imisingi y'umuyaga, imisingi y'inyubako nini, cofferdams, sisitemu z'uburinzi bw'amazi.
6. Uburyo bwo gukora - LSAW ku miyoboro y'ibyuma ya ASTM A252 Grade 3
Womic Steel ihitamo inzira ishingiye ku bugari n'ubugari bw'urukuta. Ku bijyanye no gushyiramo ibikoresho, ubushobozi bwo kwihanganira ibintu mu buryo bungana ntabwo bukabije ugereranyije na API 5L, ariko ubuziranenge bwo gusudira no kugenda neza ni ingenzi mu gutwara inyundo.
Uburyo bwa JCOE (406–1,422mm OD, 6.0–50.8mm WIT):
● Gusya plaque edge (bevel yoroshye, nta tegeko rikomeye kuri X cyangwa J)
● Ikorwa rya JCO rikurikiranye
● Gusudira mu buryo bwa SAW (imbere no hanze)
● Kwagura imiyoboro y'amashanyarazi (ni ngombwa - imiyoboro yo gukurura imiyoboro akenshi ntisaba kwagura imiyoboro)
● Bikwiriye cyane ku migozi myinshi y'ifatizo
Uburyo bwa UOE (508–1,220mm OD, 6.0–40mm WIT):
● Gukanda U-press na O-press hamwe no kwagura
● Ikora imirundo izengurutse cyane - ikaba ingirakamaro mu kwihanganira gukurura cyane mu myobo yabanje gucukurwa
● Ikoreshwa mu gucukura ibyuma byo mu mazi
Isahani Izungurutse (Umushono Umwe) wo Ku rukuta Rurerure n'Ubugari Bunini (600–3,500mm OD, Uburemere bwa 25–100mm):
● Imizingo ine irapfundika mu cylinder
● Gusudira mu buryo bwa longitudinal SAW (gusudira inkuta nini)
● Nta kwaguka kwa mashini (kwihanganira intanga ± 0.75% ni byo byemewe mu gukurura)
● Ni byiza cyane ku migozi minini yo mu mazi aho uburebure bwayo butagorana cyane ugereranyije n'ubushobozi bwo kuyitwara.
Isahani Izungurutse (Umushono Ubiri) ku Murambararo Munini Cyane (1.200–3.500mm OD, Uburemere bwa 25–100mm):
● Amasahani abiri azungurutse kandi asukwa ku migozi ibiri
● Buri mushono wagenzuwe 100% UT na RT
● Ikoreshwa ku birundo binini by'umurambararo (ibice by'umuyaga bigera kuri metero 10)
Gukora Ibirundo birebire (kugeza kuri metero 60):Ku mishinga isaba imigozi miremire cyane (urugero, imiyoboro y'umuyaga wo mu mazi), Womic ishobora gusudira ibice byinshi bya metero 12 cyangwa metero 18 kuva ku mpera kugeza ku mpera hakoreshejwe imiyoboro yuzuye ya SAW circumferential butt welds. Buri miyoboro izunguruka igenzurwa 100% UT na RT. Ikirundo cyarangiye kiragabanuka (PWHT) iyo ubugari bw'urukuta burenga mm 40.
7. Uburyo bwo kugenzura no gupima ubuziranenge bw'umuyoboro w'icyuma wa LSAW wa ASTM A252 Grade 3
| Urugendo | Uburyo bwo kugenzura | Intego |
| Isahani | Isesengura ry'Ubutabire | Genzura ingano ya karuboni/manganese |
| Isahani | Ikizamini cyo gukurura | Genzura umusaruro n'uburyo bwo gukurura (≥ 345/455 MPa) |
| Isahani | Ikizamini cyo Kunama | Igenzura ry'ubushobozi bw'imodoka |
| Muri gahunda | Ingano (OD, WT, ovality) | Menya neza ko imiyoboro ingana |
| Umushonge wo gusudira | Isuzuma rya Ultrasonic (100% ku mirundo ikomeye) | Kumenya inenge zo gusudira |
| Umushonge wo gusudira | RT (ahantu - 10% bisanzwe ku gukurura) | Igenzura ry'ubuziranenge bw'ubusoda |
| Umushonge wo gusudira | MPI (amano yo gusudira) | Imyanya yo hejuru (ni ingenzi ku mirundo itwarwa) |
| Umuyoboro warangiye | Ikizamini cya Hydrostatic (ni ngombwa – gupima ingano y'amazi ntibikunze kuba ngombwa) | Gusa iyo byavuzwe |
| Umuyoboro warangiye | Ikizamini cyo Kugonda Giyobowe (gusudira) | Uburyo bwo gusudira bwo gutwara imodoka |
| Umuyoboro warangiye | Ikizamini cyo Kugorora | Ubushobozi bwo kugenda kw'imiyoboro y'amazi |
| Umuyoboro warangiye | Ishusho n'Ibimenyetso | Imiterere y'ubuso, ikimenyetso cy'uburebure |
Ku byuma bishongeshejwe (gushyiraho inyundo):Ibizamini bya MPI byo gusimbuza hamwe n'ibizamini byo gusimbuza ni ingenzi cyane kugira ngo sima idapfa gusimbuka.
Ubusanzwe ku bidukikije byo mu mazi cyangwa ahantu hangiza:
● Igenzura ry'ibisigazwa (gupima iminsi mikuru, gufatana, ubugari)
● Gupima ubukomere (ku bidukikije byo mu mazi)
● PWHT ku nkuta nini (> 50mm)
8. Porogaramu z'ibanze - Umuyoboro w'icyuma wa LSAW wa ASTM A252 Grade 3
●Ishingiro ry'ikiraro– Ibirundo birebire by'inkombe z'ibiraro mu nkengero z'imigezi n'ubutaka bworoshye
● Gushyira ibintu ku cyambu n'icyambu– Imbuga z'amazi, inkuta z'aho ubwato buhagarara, ishingiro ry'aho kontineri zihagarara
● Imigozi y'amakoti yo ku rubaraza rwo hanze y'inyanja– Imigozi y'ibanze yo gushyiramo peteroli/gaze mu mazi maremare kugeza ku bujyakuzimu buringaniye
● Ishingiro ry'umunara wa turbine y'umuyaga– Monopiles zo mu mirima y’umuyaga yo mu nyanja (akenshi ni nini, urukuta runini)
● Inyubako ndende z'amagorofa maremare zishingiye ku rufatiro rurerure– Ibirundo by'imizigo by'amazu maremare mu mijyi
● Imigozi yo gushyigikira ibyuma byo mu mazi– Sisitemu z'uburinzi zo gupakira ubwato
● Amazu yo gukingira n'inkuta zo gukingira– Kubika ubutaka by'igihe gito cyangwa burundu
● Ikimenyetso cy'umuhanda n'inkingi z'amatara– Ibirundo bito by'ubugari bwo gutwara abantu n'ibintu
● Imigozi yo kubungabunga ubutaka- Imishinga yo kunoza ubutaka
● Ishingiro ry'ikiraro cya gari ya moshi– Ibikorwa remezo bya gari ya moshi nini
9. Gupakira no Kohereza – Umuyoboro w'icyuma wa LSAW wa ASTM A252 Grade 3
Imiyoboro yo gukurura amazi ikunze koherezwa ari myinshi, akenshi ikagera ahantu h'ubwubatsi.
Gupfunyika:
● Udupira duto (≤ 610mm): Dufatanye imishumi y'icyuma (imishumi 3-5 kuri buri mushumi) hamwe n'udupira two mu mfuruka dukingira.
● Ubwinshi bunini (> 610mm): Imiyoboro y'amazi ukwayo, itandukanyijwe n'ibiti by'umucanga.
● Ibirundo biremereye byo ku nkuta: Imiyoboro imwe imwe ifite inkingi zipfundikiye ku ngingo 3-4.
● Udupfundikizo: Udupfundikizo twa pulasitiki two ku mpera zigose; impera zisanzwe zishobora gusigara zifunguye.
● Uburinzi bwo gusiga: Ku mirundo ipfundikiye, ipadiri y'ibara rya rubber cyangwa ifuro ripfundikiye hagati y'ibice.
Kohereza:
● Udukoresho two gukata uduce duto tw’umurambararo munini n’uburebure burebure (kugeza kuri metero 60)
● Ibikoresho bifunguye cyangwa ibikoresho bifunguye bifite uburebure bwa metero 18
● Ibikoresho bifite umurambararo muto (< 610mm, ≤ 12m)
● Gari ya moshi cyangwa ikamyo yo kugeza ibicuruzwa mu gihugu imbere
Inyandiko:Icyemezo cy'ikizamini cy'inganda (EN 10204 Ubwoko bwa 3.1), raporo y'ibipimo, raporo za UT/RT (niba zaravuzwe), urutonde rw'ibipakiye, inyemezabuguzi y'ubucuruzi, Umuyobozi Mukuru w'Ikigo cy'Imari.
10. Ibyiza n'Ibibazo Bikunze Kubazwa ku Cyuma cya Womic - Umuyoboro w'Icyuma wa ASTM A252 Grade 3 LSAW
Kuki Womic Steel ikoreshwa mu gupima umuyoboro wa ASTM A252 Grade 3?
●Ubushobozi bunini bw'umurambararo bugera kuri mm 3,500 (138″) - ni bwiza cyane ku migozi minini n'ibirundo binini byo mu mazi
●Urukuta ruremereye rugera kuri mm 100 - rushyigikira imitwaro miremire cyane yo mu ruhande n'iy'inyuma
●Gukora ibirundo birebire kugeza kuri metero 60 - bigabanya ibice by'umurima n'igihe cyo gushyiraho
●Uburyo bwinshi (JCOE, UOE, plaque izungurutse) kugira ngo ikorerwe mu buryo buhendutse
●Isuzuma ry'umuntu wa gatatu rirahari (SGS, BV, ABS, DNV)
●Imiyoboro yo gukurura irenga kilometero 500 yatanzwe ku isi yose
●Ibiciro bihangana ku mishinga minini y'ibikorwa remezo
Ibibazo Bikunze Kubazwa:
Q: Ni irihe tandukaniro riri hagati ya ASTM A252 Grade 3 na API 5L X52 mu gukusanya ibintu?
A: Icyiciro cya 3 gifite imbaraga nke (345 MPa ugereranyije na X52's 360 MPa) ariko cyagenewe by'umwihariko gukurura imigozi. Gifite ubushobozi bwo kugenda no kurekura ibintu (iminota 20%) kandi cyihanganira cyane gukurura ibintu mu gihe cyo gukurura inyundo. API 5L X52 ishobora no gukoreshwa mu gukurura imigozi, ariko Icyiciro cya 3 ni cyo gipimo ngenderwaho cy’inganda ku migozi y’ifatizo muri Amerika ya Ruguru no mu mishinga myinshi mpuzamahanga.
Q: Ese ushobora gutanga imirundo miremire irenga metero 18?
A: Yego. Dushobora gusudira ibice byinshi bya metero 12 cyangwa metero 18 hamwe kugira ngo tubone uburebure bugera kuri metero 60. Buri gusudira uruziga rusuzumwa 100% UT kandi rushobora gusuzumwa RT iyo rubisabye. Ibi birundo birebire bikunze gukoreshwa ku birundo by'umuyaga byo mu nyanja (uburebure bwa metero 30-50).
Q: Ubunini ntarengwa bw'urukuta ku muyoboro wa LSAW wo mu cyiciro cya 3 ni ubuhe?
A: Umugozi umwe uzungurutse ufite uburebure bwa mm 100, umugozi ubiri na wo ufite uburebure bwa mm 100. Ku bugari bw'urukuta ruri hejuru ya mm 100 (urugero: mm 120), twandikire kugira ngo tubone isuzuma ryihariye ry'umushinga. Twatanze imigozi ya mm 120 yo gushingiraho mu mazi y'ubujyakuzimu yihariye.
Q: Ese iyi miyoboro ikeneye gupimwa hidrostatike?
A: ASTM A252 ntisaba isuzuma rya hydrostatic kuko imiyoboro yo gucukuramo ibintu idashyiramo umuvuduko. Ariko, niba umushinga wawe ukeneye isuzuma rya hydrostatic (urugero, ku gucukura ibintu hamwe no gutwara amazi), dushobora kubikora ku kiguzi cy'inyongera.
Q: Ni iyihe paki isabwa mu gusiga ibirungo byo mu mazi?
A: Ku bidukikije byo mu mazi yo mu nyanja, epoxy ya tar epoxy (ubugari bwa mikoroni 600-800) cyangwa epoxy y'ibirahure ikunze gukoreshwa. Ku bice by'ahantu hapfukiranwa, turasaba FBE cyangwa 3LPE ifite ubushobozi bwo kongera gukurura. Ku mazi meza cyangwa ubutaka, umuyoboro w'umukara cyangwa ubuso busizwe amavuta akenshi birahagije.
Q: Ni gute wakwizeza ko imashini zisudira zikomeza gukoresha inyundo?
A: Dukora 100% UT y'umushongi wo gusuka hamwe na MPI (igenzura ry'uduce twa magnetic particle) tw'amano yo gusuka kugira ngo tumenye aho ubuso bumenetse. Dukora kandi ibizamini byo kugonga ku bipimo byo gusuka kugira ngo tumenye neza ubushobozi bwo gusuka. Ku mapine akomeye ashongeshejwe, dushobora kandi gutanga ikizamini cya Charpy ku bushyuhe bwa 0°C cyangwa munsi yayo.
Q: Ni igihe kingana iki gisanzwe cyo gutanga imiyoboro yo mu cyiciro cya 3?
A: Igihe gisanzwe cyo kuyobora: iminsi 30-45 ku mpande ≤ 1,422mm. Ku miyoboro minini y'ibipande byazingiye (> 1,422mm): iminsi 45-60. Ku miyoboro miremire ishongeshejwe (kugeza kuri 60m): ongeramo ibyumweru 2-3 byo gusudira no kugenzura.
Icyitonderwa cy'umushinga - Kwagura ikigo cy'indege cya Houston
Igihugu:Leta Zunze Ubumwe za Amerika (Houston, Texas)
Igipimo n'Icyiciro:ASTM A252 Icyiciro cya 3 (hamwe n'inyongera ya Charpy kuri 0°C)
Ingano n'ingano:
●OD 914mm (36″) × Ubwinshi 19.0mm – metero 18.000 (hafi toni 7.600) yakozwe na JCOE process
●OD 1,067mm (42″) × Ubwinshi 22.2mm – metero 9.000 (hafi toni 4.600) ikorwa n'umugozi umwe w'icyuma gipfundikiye
●OD 1,219mm (48″) × Ubwinshi 25.4mm – metero 3,500 (hafi toni 2,500) ikorwa n'umugozi umwe w'icyuma gipfundikiye (ku byumba byo kuraramo amazi menshi)
Igiteranyo:Metero 30.500 (30.5 km) z'ibirundo, toni zigera ku 14.700
Ibisobanuro:Impera zisanzwe (ziciwe kare) zifite chamfer, epoxy coating (microns 500, coal tar epoxy type) zo kurinda ingese mu mazi y'umugezi wa Houston Ship Channel. Ikizamini cyo gufunga (nta mvune nyuma yo gufunga 1/3 diameter). Ikizamini cyo gufunga kiyobowe kugira ngo harebwe uburyo bwo gufunga. 100% UT y'umushongi wo gufunga hamwe n'ahantu 10% RT. MPI y'amano yo gufunga. Impanuka ya Charpy kuri 0°C (min 20J, ubusanzwe 40-60J). Igenzura rya gatatu rikorwa na SGS.
Porogaramu:Kwagura Ikigo cy’amakonteyineri cya Bayport ku cyambu cya Houston. Uyu mushinga wasabaga kubaka ahantu habiri hashya ho kurara (urukuta rw’ikirahure rwa metero 1.200) hamwe n’ahantu ho kubika amakonteyineri ku nkengero z’ubutaka. Imiyoboro y’ibyuma ikora nk'urufatiro rw’inyubako y’isanduku ya sima (imizingo ihagaze) n’imizingo ishyigikira uruzitiro (imizigo ihagaze). Ubujyakuzimu bw’amazi ku myanya yo kuraramo: metero 16.
Ibibazo bya tekiniki n'ibisubizo:
●Ahantu ho mu mazi y'umunyu hangiritse cyane– Houston Ship Channel ifite chloride nyinshi (10.000-18.000 ppm) na pH iri hasi (6.5-7.0) bitewe n'amazi aturuka mu nganda. Womic yashyizeho tar epoxy coating (600 microns DFT) ifite ibice bibiri: primer (200 microns) + topcoat (400 microns). Coating yatsinze ikizamini cyo gusukura umunyu mu masaha 3.000 (ASTM B117) ifite <2mm creep. Gupima ibirori byakozwe kuri 3.5kV nta na kimwe cyakozwe.
●Imihangayiko ikomeye mu mucanga mwinshi– Imiterere y'ubutaka ku gice cyo hejuru igizwe n'umucanga wuzuyemo ifumbire hamwe n'ibipimo bya N bya 30-50. Imiterere y'imizigo yo gukurura ifumbire yageze kuri 80% by'imbaraga z'umusaruro. Womic yakoze ibizamini byo kuzunguruka ku macupa yo kuzunguruka (ubugari bwa 4x, 180°) nta mvune. Twanatanze MPI yo kuzunguruka kuri buri mfune ya 50 kugira ngo twizere ko nta mvune z'amano. Rwiyemezamirimo wo gutwara ifumbire ku mukiriya yavuze ko nta mvune zavunitse mu gihe cyo gushyiraho ifumbire 2.100.
●Ibirundo birebire byo kuryamamo amazi menshi– Ahantu ho hasi cyane hasabaga ibirundo binini cyane kugeza kuri metero 32 z'ubujyakuzimu (metero 20 mu mazi + metero 12 hejuru y'umuyoboro w'ibitaka). Ibirundo bisanzwe bya metero 12 byasabaga ibirundo 3 by'umurima kuri buri kirundo. Womic yatanze ibirundo 18 by'uburebure (umushono umwe uzungurutse) ku birundo bya mm 1,067 na mm 1,219, bigabanya ibirundo kuva kuri 3 kugeza kuri 2 kuri buri kirundo (bikagabanya igihe cyo gusudira cya 35%). Twanatanze ibirundo 36 by'uburebure kuri sisitemu yo gufunga (nta birundo bikenewe) dusudira ibice bibiri bya metero 18 kuva ku mpera kugeza ku mpera hamwe na SAW yuzuye na UT 100%.
●Uburemere bw'ingaruka ku gutwara imodoka mu gihe cy'itumba– Ubushyuhe bw'itumba muri Houston bushobora kugabanuka bukagera kuri -5°C. Gutwara imodoka mu mugozi ku bushyuhe buke bishobora gutuma ivunika. Womic ihabwa urwego rwa 3 ifite ubushyuhe buke: Impanuka ya Charpy kuri 0°C ku munota wa 20J (A252 isanzwe ntisaba isuzuma ry'ingaruka). Ibisubizo nyabyo: 45-65J kuri 0°C, 35-50J kuri -10°C. Umukiriya yashyize ibi nk'igisabwa kidategetswe ariko gifite akamaro.
●Ibikoresho bitangwa ku gihe– Aho bubakaga hari ubuso buto bwo gupakira (metero kare 8.000 gusa). Womic yateganyaga kohereza ibintu bine (hafi toni 3.700 kuri buri kimwe) mu mezi 5. Imiyoboro yagejejweho n'ubwato bunini buva i Shanghai bujya i Houston, hanyuma ikagezwa mu matsinda ya toni 200 buri byumweru 2. Itsinda ry'ibikoresho rya Womic ryahuje n'ubuyobozi bw'icyambu kugira ngo bashyire imbere gupakurura no kohereza ibintu mu buryo bunoze, birinda kubika ku cyambu. Ibicuruzwa byose byageze mu minsi ± 3 uhereye ku matariki yagenwe.
●Gukurikiza amategeko agenga ihagarikwa rya Buy America– Umushinga wo ku cyambu cya Houston wasabye ko ibyuma byo mu mahanga bikurwaho kuko umusaruro w’imbere muri Amerika utashoboraga kuzuza gahunda. Womic yatanze inyandiko zirambuye zirimo icyemezo cy’inganda, igihugu zikomokamo, n’uburyo ibikoresho byakurikiranwa. Iyo mvune yemejwe, maze toni 14.700 zose zishyurwa muri Gasutamo ya Amerika nta gutinda.
● Ibisubizo:Kwagura Ikigo cy’imashini zitwara imizigo cya Bayport byarangiye mu gihembwe cya gatatu cya 2024, mbere y’igihe cyari giteganyijwe. Imiyoboro yose y’ibyuma 2.100 yatsinze igeragezwa ry’umutwaro (isuzuma ry’umutwaro uhoraho kuri 5% by’imiyoboro: guhagarara < 10mm ku mutwaro wa kabiri). Ikigo gishinzwe icyambu cyatangaje ko nta kibazo cy’imiyoboro cyagize cyangwa ikibazo cyo gusiga. Womic Steel yahawe igihembo cya "Supplier Performance Excellence" n’umucuruzi mukuru (ikigo gikomeye cy’ubwubatsi muri Amerika). Iki kigo ubu kirakora, gitanga TEU miliyoni 1.5 buri mwaka.
Umuntu wo kuvugana nawe:
Urubuga: www.womicsteel.com
Imeri: sales@womicsteel.com
Terefone / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568
Womic Steel – Umufatanyabikorwa wawe wizeye ku miyoboro y'ibyuma ya ASTM A252 Grade 3 LSAW yo gushingiraho ibiraro, gucukura imiyoboro yo mu mazi, gushingiraho inkingi z'ubujyakuzimu, n'imiyoboro y'umuyaga yo mu nyanja ku isi yose.
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