Chitoliro chachitsulo cha ASTM A500 Giredi C LSAW: Mphamvu Zopangira & Zofotokozera Zamalonda Chithunzi Chowonetsedwa

Chitoliro chachitsulo cha ASTM A500 Giredi C LSAW: Mphamvu Zopangira & Mafotokozedwe a Zogulitsa

Kufotokozera Kwachidule:

Womic Steel imapereka chitoliro chachitsulo cha ASTM A500 Giredi C LSAW chapamwamba kwambiri chogwiritsidwa ntchito popanga zinthu zomwe zimafuna mphamvu zambiri kuposa Giredi B. Giredi C imapereka mphamvu yocheperako ya 345 MPa (50,000 psi) ndi mphamvu yocheperako ya 485 MPa (70,300 psi), zomwe zimapangitsa kuti ikhale chisankho chabwino kwambiri pomanga zipilala, ma trusses a mlatho, nsanja zotumizira, ndi zothandizira zida zolemera. Njira ya LSAW imaphatikizapo njira zowotcherera za JCOE, UOE, ndi rolled plate, zomwe zimapereka msoko wowongoka wautali wokhala ndi kukhazikika kwabwino kwambiri. Pa mapaipi akuluakulu a dayamita kapena olemera a khoma (mpaka makulidwe a khoma a 80mm), Womic imagwiritsa ntchito plate rolling ndi multi-pass submerged arc welding. Dayamita yakunja kuyambira 219mm mpaka 2,500mm (8″ – 98″), makulidwe a khoma kuyambira 5.0mm mpaka 80mm, kutalika mpaka 24m. Chiphaso cha mphero, mayeso a 100% a ultrasound (msoko wothira weld), malekezero opindika kapena osalala, ndi zokutira zotsutsana ndi dzimbiri (primer, epoxy, hot-dip galvanizing) zilipo. Zoyenera mafelemu omangira, ma chords a mlatho, ma crane booms, ma stadium trusses, miyendo ya nsanja yotumizira, nyumba zam'mphepete mwa nyanja, ndi nsanja zamafakitale.

Kukula kwa Chitoliro cha Chitsulo cha LSAW:Chipinda chakunja: 219mm – 2,500mm (8″ – 98″), Kukhuthala kwa Khoma: 5.0mm – 80mm (JCOE/UOE max 50.8mm, mbale yozungulira max 80mm), Kutalika: 6m – 18m muyezo, kutalika kwapadera mpaka 24m

Chitoliro cha Chitsulo cha LSAW Chokhazikika & Chachikulu:ASTM A500 Giredi B, Giredi C; komanso ASTM A53 GR.B (magwiritsidwe ntchito a kapangidwe kake); ASTM A252 Giredi 2, Giredi 3 popangira zingwe

Kugwiritsa Ntchito Chitoliro cha Chitsulo cha LSAW:Kumanga zipilala ndi matabwa, ma chord a bridge truss ndi ma diagonal, miyendo ya transmission tower (lattice ndi monopole), ma crane booms ndi outriggers, ma stadium roof trusses, ma modules a m'mphepete mwa nyanja, zothandizira nsanja zamafakitale, mafelemu olemera, zikwangwani ndi ma lighting pole, zomangira zomangira m'mafelemu omangira nyumba

Chitsulo cha Womic chimapereka mitengo yapamwamba komanso yopikisana ya chitoliro chachitsulo cha ASTM A500 Giredi C LSAW, chitoliro chopangidwa ndi chitsulo chofewa chopangidwa ndi ozizira, chitoliro chozungulira cha JCOE, chitoliro cholemera cha chitsulo chopangidwa ndi khoma. Satifiketi ya Mill EN 10204 3.1, Kuwunika kwa weld ya UT, malekezero opindika/osalala, chophimba choteteza dzimbiri chilipo. Kupereka mwachindunji kwa mafakitale kumapulojekiti omanga ndi uinjiniya padziko lonse lapansi.

Tumizani imelo kwa ife Zofotokozera Zamalonda

Tsatanetsatane wa Zamalonda

Ma tag a Zamalonda

1. Womic Steel: Mphamvu Zopangira ndi Mphamvu za Kampani

Womic Steel Group imagwiritsa ntchito mizere ingapo yopanga LSAW yomwe imatha kupanga mapaipi omangira a ASTM A500 Giredi C. A500 Giredi C ndi chubu chomangira cha chitsulo cha kaboni chopangidwa ndi chitsulo chozizira ("chomangira chozizira" chimatanthauza kutentha kopanga, osati chithandizo cha kutentha pambuyo pa weld). Njira ya LSAW ndi yabwino kwambiri pazigawo zazikulu zozungulira zomwe zili ndi mainchesi ochulukirapo kuposa mphamvu ya ERW kapena mphero zopanda msoko.

●Mzere wa JCOE:Pa mainchesi 406mm – 1,422mm (16″–56″), makulidwe a khoma mpaka 50.8mm. Yoyenera kumanga mizati ndi zipilala za mlatho.

● Mzere wa UOE:Pa mainchesi 508mm – 1,220mm (20″–48″), makulidwe a khoma mpaka 40mm. Amapanga zozungulira zambiri zachitsulo chomangidwa chomwe chili ndi mawonekedwe.

● Mbale Yopindidwa (Msoko Umodzi):Pa mainchesi 600mm – 2,500mm (24″–98″), makulidwe a khoma kuyambira 25mm mpaka 80mm. Ndi abwino kwambiri pa mizati yolemera ya khoma ndi miyendo ya nsanja yotumizira.

● Mbale Yopindidwa (Msoko Wawiri):Pa mainchesi 1,200mm – 2,500mm (48″–98″), makulidwe a khoma mpaka 80mm.

Mphamvu yonse ya LSAW imaposa matani 300,000 pachaka, ndipo kupanga kwa A500 Giredi C kumaposa matani 80,000 pachaka. Womic Steel ili ndi ISO 9001, ndipo imatha kupereka mayeso a chipani chachitatu ndi SGS, BV, TÜV. Matani zikwizikwi a A500 Giredi C amaperekedwa ku mapulojekiti a zomangamanga ku US (milatho, mabwalo amasewera, mafakitale).

Kusinthasintha kwa Kupanga kwa A500 Giredi C:

JCOE: 406–1,422mm OD × 5.0–50.8mm Kulemera × ≤ 18m

UOE: 508–1,220mm OD × 5.0–40.0mm Kulemera × ≤ 24m

Mbale yozungulira (msoko umodzi): 600–2,500mm OD × 25–80mm Kulemera × ≤ 18m

Mbale yozungulira (msoko wawiri): 1,200–2,500mm OD × 25–80mm Kulemera × ≤ 18m

Mapaipi amatha kuperekedwa ndi zokutira za primer (epoxy wolemera mu zinc, 40-80 microns), bare (yopaka mafuta), kapena hot-dip galvanized.

2. ASTM A500 Giredi C: Kapangidwe ka Zinthu & Makhalidwe Abwino

Giredi C ya ASTM A500 ndiye giredi yamphamvu kwambiri mu A500 yofotokozera za mapaipi opangidwa ndi chitsulo cha kaboni chofewa. Mphamvu yocheperako yotulutsa ndi 345 MPa (50,000 psi) ndi mphamvu yomangirira ndi 485 MPa (70,300 psi). Ndi yamphamvu pafupifupi 25% kuposa Giredi B (yotulutsa 290 MPa, yomangirira 400 MPa). Giredi C nthawi zambiri imatchulidwa kuti igwiritsidwe ntchito pakupanga zinthu zolemera.

Kapangidwe ka Mankhwala (max % ndi kulemera - ASTM A500 sikutanthauza malire okhwima, koma magawo wamba):

Chinthu	ASTM A500 Giredi C (mtundu wamba)	Kulamulira kwa Akazi
C	0.23 max (nthawi zambiri 0.20-0.23)	0.20-0.23
Mn	1.35 max (nthawi zambiri 1.10-1.30)	1.15-1.30
P	0.035 pasadakhale	≤ 0.030
S	0.035 pasadakhale	≤ 0.025
Si	0.30 pasadakhale (wamba)	0.15-0.30

Katundu wa Makina (Kutentha kwa Chipinda):

Katundu	ASTM A500 Giredi C
Mphamvu Yotulutsa (mphindi) ya machubu ozungulira	345 MPa (50,000 psi)
Mphamvu Yokoka (mphindi)	485 MPa (70,300 psi)
Kutalika (mphindi) kwa machubu ozungulira - geji ya 50mm	21%
Kutalika (mphindi) kwa machubu ozungulira - geji ya 200mm	13%

Kuyerekeza ndi A500 Giredi B ndi A53 GR.B:

Giredi	MPa yobereka	MPa yokoka	Ntchito Yachizolowezi
ASTM A53 GR.B	240	415	Kapangidwe kake konse, mphamvu yochepa
ASTM A500 Giredi B	290	400	Mphamvu yapakatikati yomanga
ASTM A500 Giredi C	345	485	Mphamvu yayikulu yomanga, katundu wolemera

Mphamvu yayikulu ya Giredi C imalola makoma opyapyala kapena mphamvu yayikulu yonyamula katundu poyerekeza ndi Giredi B.

3. Kutsatira Miyeso ndi Magawo a Dimensional Range

Chinthu	Kufotokozera
Muyezo	ASTM A500 Giredi B, Giredi C
Njira Zopangira	JCOE, UOE, mbale yozungulira (msoko umodzi/wawiri)
Kunja kwa Makulidwe Aakulu	219mm – 2,500mm (8″ – 98″)
Makulidwe a Wall	JCOE/UOE: 5.0mm – 50.8mm; Mbale yozungulira: 25mm – 80mm
Kutalika kwa Utali	Mulingo: 6m, 12m, 18m; Wotambasuka: mpaka 24m
Mapeto Omaliza	Mapeto Opanda Chilema (PE), Mapeto Okhala ndi Miyendo (BE), kapena kudula kozungulira
Kumaliza Pamwamba	Wamba (wothira mafuta), Wakuda, Wokutidwa ndi pulasitala, Wothira ndi galvanized yotentha
Kulekerera (ASTM A500)	OD: ±0.5% pa kulondola; Kulemera: ±10%; Kutalika: ±25mm (pa kudula kwachizolowezi)
Kuwongoka	≤ 0.2% ya kutalika
Kusazungulira konse	≤ 2% (muyezo wa kapangidwe kake)

Ma tolerance a ASTM A500 ndi ochepa kwambiri kuposa API 5L, zomwe zimapangitsa kuti kupanga kwa LSAW kwakukulu kukhale kotsika mtengo pa ntchito zomangira.

4. Miyeso ndi Mafotokozedwe Omwe Alipo - Chitoliro cha Chitsulo cha ASTM A500 Giredi C LSAW (Makulidwe Omwe Asankhidwa)

OD (mm)	Zosankha za WT (mm)	Njira	Kulemera pafupifupi (kg/m2)	Kutalika Kwanthawizonse	Ntchito Yachizolowezi
219	5.0, 6.0, 8.0, 10.0, 12.5	JCOE	26.4 – 63.6	12m	Chipilala chomanga
273	6.0, 8.0, 10.0, 12.5, 14.0	JCOE	39.5 – 89.4	12m / 18m	Chord ya mlatho
324	8.0, 10.0, 12.5, 14.0, 16.0	JCOE	62.4 – 121.5	12m / 18m	Nsanja yotumizira
406	8.0, 10.0, 12.5, 14.0, 16.0, 20.0	JCOE/UOE	78.5 – 190.4	12m / 18m	Crane boom
508	10.0, 12.5, 14.0, 16.0, 20.0, 25.0	UOE	122.8 – 297.8	12m / 18m / 24m	Chitseko cha bwalo lamasewera
610	12.5, 14.0, 16.0, 20.0, 25.0, 30.0	UOE	184.2 – 429.1	12m / 18m	Chipilala cholemera
711	14.0, 16.0, 20.0, 25.0, 30.0, 35.0	JCOE/UOE	240.7 – 583.5	12m / 18m	Mbali ya pamwamba pa nyanja
813	16.0, 20.0, 25.0, 30.0, 35.0, 40.0	JCOE	314.4 – 762.7	12m / 18m	Chipilala cha mlatho
914	20.0, 25.0, 30.0, 35.0, 40.0, 45.0	JCOE/Yokulungidwa	441.0 – 964.8	12m / 18m	chimango cha mafakitale
1,016	20.0, 25.0, 30.0, 35.0, 40.0, 50.0	Yopindidwa	491.3 – 1,191.7	12m	Monopole yotumizira
1,220	25.0, 30.0, 35.0, 40.0, 50.0, 60.0	Yopindidwa	736.5 – 1,716.9	12m	Mafakitale olemera
1,422	30.0, 35.0, 40.0, 50.0, 60.0, 70.0	Yopindidwa (imodzi)	1,030 – 2,335	12m	Kapangidwe kake kakakulu
1,600	35.0, 40.0, 50.0, 60.0, 70.0, 80.0	Yopindidwa (iwiri)	1,350 - 3,000	12m	Ntchito yapadera
2,000	40.0, 50.0, 60.0, 70.0, 80.0	Yopindidwa (iwiri)	1,933 – 3,784	12m	Zomangamanga
2,500	50.0, 60.0, 70.0, 80.0	Yopindidwa (iwiri)	3,023 – 4,766	12m	Zachikulu

Pa ntchito za kapangidwe kake, kulekerera kwa miyeso sikokhwima kwambiri, zomwe zimapangitsa kuti pakhale kupanga kotsika mtengo. Pazitsulo zomangidwa zomwe zili ndi mawonekedwe owonekera, kupukutira ndi kuphimba pulasitala kumalimbikitsidwa.

5. Miyezo ndi Magiredi Ofanana - Machubu Ozungulira Opangidwa (LSAW)

Muyezo	Magiredi a Zitsulo	Ntchito Yachizolowezi	Njira Yopangira
ASTM A500	Giredi B, Giredi C	Mafelemu omangira nyumba, milatho, nsanja	JCOE/UOE/Yokulungidwa
ASTM A53	GR.B	Kapangidwe kake konse, mphamvu yochepa	JCOE
ASTM A252	Giredi 2, Giredi 3	Kuyika zinthu mulu (komanso kapangidwe kake)	JCOE/Yokulungidwa
EN 10219	S355JRH, S355J2H	Kapangidwe ka ku Ulaya	JCOE/Yokulungidwa
CSA G40.21	350W, 350W	Kapangidwe ka nyumba ku Canada	JCOE
AS/NZS 1163	C350L0, C450L0	Kapangidwe ka nyumba ku Australia	JCOE

Chidule cha kagwiritsidwe ntchito:Zipilala zomangira, zida zomangira mlatho, miyendo ya nsanja yotumizira, ma crane booms, ma trusses a denga la bwalo lamasewera, mbali za m'mphepete mwa nyanja, mapulatifomu a mafakitale.

6. Njira Zopangira - LSAW ya Chitoliro cha Kapangidwe ka ASTM A500 Giredi C

Pa ntchito yomanga, ubwino wa weld uyenera kukhala wabwino, koma nthawi zina pamafunika kukongola (mawonekedwe osalala a weld). Kukulitsa makina ndi chinthu chosankha.

Njira ya JCOE (406–1,422mm OD, 5.0–50.8mm WET):

● Kupanga motsatizana kwa JCO kokhazikika

● Kuwotcherera kwa SAW mkati ndi kunja

● Kukulitsa makina (ngati mukufuna - kumawonjezera kuzungulira kwa nyumba zooneka)

● Kupukuta kopangidwa ndi weld kulipo (kutsuka chitsulo chowonekera)

● Yoyenera magawo ambiri a kapangidwe ka nyumba

Njira ya UOE (508–1,220mm OD, 5.0–40mm WET):

● Kanikizani U + kanikizani O ndi kukulitsa

● Amapanga mapaipi ozungulira kwambiri - abwino kwambiri pa ntchito zomangamanga zomwe zili poyera

● Maonekedwe a weld ogwirizana

Mbale Yozungulira (Msoko Umodzi) wa Khoma Lolemera (600–2,500mm OD, 25–80mm WIT):

● Kupindika kwa mipukutu inayi mu silinda

● Kuwotcherera kwa SAW kwa Longitudinal (kulumikiza makoma okhuthala ndi ma multi-pass)

● Palibe kukula - kukhuthala mpaka 1-2% kovomerezeka pa kapangidwe kake

● Amagwiritsidwa ntchito pa mizati yolemera ya khoma ndi ma chords akuluakulu a truss

Zosankha zomaliza pambuyo pa kuwotcherera:

● Kupera zinthu zomangira:Pa chitsulo chowonekera pa zomangamanga, timapukuta chivundikiro cha weld.

● Chophimba choyambirira:Choyambira cha epoxy cholemera mu zinc (40-80 microns) choteteza dzimbiri.

● Kutenthetsa ndi kuviika m'madzi otentha:Kuyika ma galvanizing a chitoliro chonse kulipo (kutalika kwakukulu 12.5m).

7. Njira Zowongolera Ubwino ndi Kuyesa Chitoliro cha Chitsulo cha ASTM A500 Giredi C LSAW

Gawo	Njira Yowunikira	Cholinga
Mbale	Kusanthula kwa Mankhwala	Tsimikizirani kutsata malamulo (malire a C, Mn, P, S)
Mbale	Mayeso Olimba	Tsimikizani kuchuluka kwa mphamvu ≥ 345 MPa, kukoka ≥ 485 MPa
Mukukonzekera	Magawo (OD, WT)	Onetsetsani kuti mukutsatira malamulo
Msoko wolukidwa	Kuyesa kwa Ultrasound (100% ya kapangidwe kofunikira, malo ofunikira kwa onse)	Dziwani zolakwika za weld
Msoko wolukidwa	Kuyesa kwa X-ray (malo - 5-10% ngati kasitomala wapempha)	Ubwino wa weld
Msoko wolukidwa	Kuyang'anira Tinthu ta Magnetic (ngati mukufuna)	Kuzindikira ming'alu pamwamba
Chitoliro chomalizidwa	Mayeso Ophwanyika (ofunikira malinga ndi ASTM A500)	Thupi la chitoliro ndi ductility ya weld
Chitoliro chomalizidwa	Mayeso Okhota Otsogozedwa (kuwotcherera)	Kusinthasintha kwa weld
Chitoliro chomalizidwa	Zooneka ndi Zooneka	Pamwamba, kuwongoka, kulemba

Pa ASTM A500, mayeso ophwanyika ndi ofunikira: gawo la chitoliro limaphwanyika kufika pa 1/3 ya mainchesi oyambirira (kapena kusontha ngati kusontha kuli pamalo a 90°). Ming'alu kapena kusweka sikuloledwa.

8. Mapulogalamu Oyambirira - Chitoliro cha Chitsulo cha ASTM A500 Giredi C LSAW

●Mizati yomanga- Zipinda zazitali zoyimirira za nyumba, mizati ya mafakitale

● Ma chord a Bridge truss ndi ma diagonal- Milatho ya Arch, milatho ya truss, milatho ya oyenda pansi

● Miyendo ya nsanja yotumizira- Miyendo ya nsanja ya Lattice (mwendo wopingasa wokhala ndi ziwalo zozungulira), maziko a monopole

● Crane imagunda ndi kuponya magiya- Zidutswa za crane zoyenda, ma stower crane milingo

● Ma trus a denga la bwalo la masewera- Ma trus akuluakulu, mafelemu a malo

● Ma modules a m'mphepete mwa nyanja- Miyendo yothandizira pa deck, yokhazikika pa nsanja zamafuta/gasi

● Zothandizira nsanja zamafakitale- Ma racks a mapaipi, zothandizira zida, mizati ya mezzanine

● Zikwangwani ndi mipiringidzo yowunikira- Mizati yozungulira yayikulu yozungulira misewu ikuluikulu ndi mabwalo amasewera

● Mafelemu a zida zolemera- Zigawo za zomangamanga za zida za migodi

● Kulimbitsa ziwalo m'mafelemu omangidwa- Kuteteza kozungulira kuti kupewe kugwedezeka kwa nthaka

9. Kupaka ndi Kutumiza - Chitoliro chachitsulo cha ASTM A500 Giredi C LSAW

Kupaka:

● Ma diameter ang'onoang'ono (≤ 610mm): Omangidwa ndi zingwe zachitsulo (matani 5-10 pa chikwama chilichonse) okhala ndi zoteteza m'mphepete

● Ma diameter akuluakulu (> 610mm): Mapaipi amodzi ndi matabwa

● Mapaipi owonekera padenga: Okulungidwa mu filimu ya pulasitiki kuti ateteze utoto wa primer

● Zipewa zomaliza: Zipewa zapulasitiki kuti zisalowe zinyalala (ngati pakufunika kuti ziume)

Manyamulidwe:

● Zidebe za mainchesi ang'onoang'ono komanso zazitali zazifupi (≤ 12m)

● Ziwiya zosweka zokhala ndi mainchesi akuluakulu (> 1,000mm) ndi khoma lolemera

● Malo otsetsereka a mapaipi aatali kwambiri (mpaka mamita 24)

● Sitima kapena galimoto yotumizira katundu mkati mwa dzikolo

Zolemba:Satifiketi Yoyesera ya Mill (EN 10204 Mtundu 3.1), lipoti la magawo, lipoti la UT (ngati lafotokozedwa), lipoti loyesa losanja, mndandanda wa zolongedza, invoice yamalonda, COO.

10. Ubwino ndi Mafunso Ofunsidwa Kawirikawiri pa Chitsulo cha Womic - Chitoliro cha Chitsulo cha ASTM A500 Giredi C LSAW

Chifukwa chiyani Womic Steel ya ASTM A500 Giredi C?

● Kukula kwakukulu mpaka 2,500mm (98″) - koyenera kwambiri pa mizati yolemera ndi ma monopole otumizira

● Khoma lolemera mpaka 80mm - la ziwalo zomangira katundu wambiri

● Njira yopukutira zitsulo zooneka ngati chitsulo

● Chophimba cha primer ndi chotenthetsera kutentha chikupezeka

● Kuwunika kwa chipani chachitatu (SGS, BV, TÜV) kwavomerezedwa

● Mitengo yopikisana pa ntchito zazikulu zomanga nyumba

Mafunso Ofunsidwa Kawirikawiri:

Q: Kodi pali kusiyana kotani pakati pa ASTM A500 Giredi C ndi ASTM A53 GR.B pa chitoliro chomangira?
A: Giredi C ili ndi mphamvu zambiri: 345 MPa yokolola poyerekeza ndi 240 MPa ya A53. Giredi C ilinso ndi zolekerera zolimba ndipo imafuna mayeso ophwanyika. Pa mizati ndi ma trusses okhala ndi katundu, Giredi C ndiyo yabwino. A53 GR.B ndi yovomerezeka kwa ziwalo zina ndi zomangamanga zosafunikira.

Q: Kodi ASTM A500 imafuna mayeso a mphamvu (Charpy)?
A: Ayi. ASTM A500 silamula kuti Charpy impact testing ...

Q: Kodi mungapereke A500 Giredi C ndi galvanizing yotentha yogwiritsidwa ntchito panja?
A: Inde. Timapereka ma galvanizing otentha pa ASTM A123. Kutalika kwakukulu kwa bafa yathu yopaka ma galvanizing ndi 12.5m. Pa mapaipi ataliatali, titha kukonza ma galvanizing odulidwa kapena kugwiritsa ntchito utoto wina (epoxy wolemera mu zinc). Chonde tchulani zomwe mukufuna kutalika.

Q: Kodi kutalika kwakukulu komwe mungapange pa chitoliro cha A500 Grade C LSAW ndi kotani?
A: Kutalika kwakukulu kokhazikika ndi 18m (JCOE) kapena 24m (UOE) pa mainchesi ≤ 1,220mm. Pa mainchesi akuluakulu (mbale yopindidwa), kutalika kwakukulu nthawi zambiri kumakhala 12-18m chifukwa cha kuchepa kwa kukula kwa mbale. Pa kutalika kopitilira 18m, titha kuluka magawo angapo kuyambira kumapeto mpaka kumapeto (zolumikizira za SAW zozungulira). Lumikizanani nafe kuti mudziwe zomwe mukufuna.

Q: Kodi mumayang'anira mapaipi a A500 Giredi C kwa anthu ena?
A: Inde. Timagwira ntchito ndi SGS, BV, TÜV, ndi mabungwe ena. Kuwunika kungaphatikizepo kuwona ndi kugawa, kuyesa kupendekera, UT kapena RT ya ma welds, ndi kuyesa mankhwala/kukakamiza. Timapereka satifiketi ya EN 10204 Type 3.1 monga muyezo; Mtundu 3.2 umapezeka mukapempha.

Q: Kodi nthawi yogwiritsira ntchito chitoliro cha A500 Giredi C LSAW ndi yotani?
A: Nthawi yokhazikika yoperekera: Masiku 30-45 a kukula kwa JCOE/UOE. Pa khoma lolemera lopindidwa (> 50mm): Masiku 45-60. Pa kuviika ndi galvanizing yotentha: onjezerani masabata 1-2. Pa kupukuta weld (kumaliza kwa zomangamanga): onjezerani masabata awiri.

Chitsimikizo cha Pulojekiti - Nyumba za Los Angeles Stadium Transmission Tower (USA)

Dziko:United States (Inglewood, California - Malo a SoFi Stadium)
Muyezo ndi Giredi:ASTM A500 Giredi C (yokhala ndi mphamvu yowonjezera ya Charpy pa 0°C)
Miyeso ndi Kuchuluka:

OD 610mm (24″) × Kulemera 16.0mm – mamita 2,400 (pafupifupi matani 560) yopangidwa ndi njira ya UOE

OD 813mm (32″) × WIT 20.0mm – 1,800 metres (pafupifupi matani 700) yopangidwa ndi njira ya JCOE

OD 1,016mm (40″) × Kulemera 25.0mm – 900 metres (pafupifupi matani 550) yopangidwa ndi msoko umodzi wa rolled plate

OD 1,220mm (48″) × Kulemera 30.0mm – 600 metres (pafupifupi matani 530) yopangidwa ndi msoko umodzi wa rolled plate
Zonse:Mamita 5,700 (5.7 km), pafupifupi matani 2,340

Mafotokozedwe:Malekezero opanda kanthu okhala ndi chamfer (yolumikizira matako), zipewa zolumikizira pansi (zofunikira pa kapangidwe kake), chophimba cha primer cholemera mu zinc (60 microns). Mayeso okakamiza opendekera (opanda ming'alu pa 1/3 diameter yopendekera). Mayeso owongolera opindika a weld. 100% UT ya weld seam. Kugunda kwa Charpy pa 0°C (min 27J, kufika pa 60-90J). Kuwongoka ≤ 0.15% (kokhwima kuposa muyezo wa A500). Kuyang'aniridwa ndi chipani chachitatu ndi SGS USA.

Ntchito:Nyumba zokongoletsera komanso zogwira ntchito bwino zoyendetsera magiya ozungulira bwalo la masewera la SoFi ndi Hollywood Park ku Los Angeles. Mapaipi a LSAW amagwira ntchito ngati zipilala zazikulu zoyimirira komanso zolumikizira zopingasa za nsanja zazikulu zoyendetsera magiya oyendetsera "super" (pafupifupi mamita 60 kutalika) zomwe zimathandiza zizindikiro, magetsi, komanso zimagwiritsidwa ntchito ngati zizindikiro za zomangamanga. Ntchitoyi idafuna chitsulo chowonekera chokhala ndi mawonekedwe osalala komanso mawonekedwe ofanana.

Mavuto ndi Mayankho a Ukadaulo:

● Chitsulo chowonekera pa zomangamanga - kupukuta ndi kumaliza ndi weld– Nsanjazo zimawonekera kuchokera ku bwalo lamasewera ndi madera ozungulira. Womic ankagwiritsa ntchito weld yodzipangira okha kenako n’kumaliza ndi manja kuti apange malo osalala (Ra ≤ 6.3μm). Tinagwiritsanso ntchito primer coating yofanana (epoxy yokhala ndi zinc, mtundu wopepuka wa imvi wotchulidwa ndi katswiri wa zomangamanga). Chitoliro chilichonse chinayang’aniridwa kuti chione ngati weld ndi gulu la QA la kasitomala.

● Zofunikira pa malo ozungulira chivomerezi - kusinthasintha ndi kulimba– Los Angeles ili mu Gulu D la Chilengedwe cha Chivomerezi (chiwopsezo chachikulu cha chivomerezi). ASTM A500 Giredi C nthawi zambiri sifunikira kuyesedwa kwa kukhudzidwa. Mainjiniya wa zomangamanga adawonjezera kufunikira kwa Charpy kwa 27J pa 0°C. Womic adasankha mbale zokhala ndi kaboni wolamulidwa (0.20-0.22%) ndi manganese (1.15-1.25%) ndipo adafika pa 60-90J pa 0°C, pamwamba pa kufunikira.

●Zigawo zazikulu zopyapyala– Miyendo ina ya nsanja inali yopyapyala (yooneka ngati kononi). Womic inapereka mapaipi owongoka omwe kenako anapangidwa ndi kontrakitala m'magawo opyapyala. Tinapereka njira yowongolera dzira (≤ 0.5%) kuti tithandize njira yopyapyala. Mapaipi adalembedwa ndi mizere yolunjika kuti atsimikizire kuti kuwotcherera kumakhala kofanana.

●Chophimba choyambirira cha malo ozungulira nyanja– Bwalo la SoFi lili pamtunda wa makilomita 5 kuchokera ku Nyanja ya Pacific, ndipo lili ndi mpweya wothira mchere. Chomera chotchedwa epoxy primer cholemera mu zinc (ma microns 60) chinagwiritsidwa ntchito pa mapaipi onse. Chophimbacho chinadutsa mayeso a salt spray kwa maola 1,000 (ASTM B117) ndi mpweya wochepera 2mm kuchokera ku scribe. Kuzindikira kwa tchuthi pa 2kV popanda kulephera konse.

●Kukonza zinthu kupita kumalo omanga omwe akugwira ntchito– Ntchito yomanga Hollywood Park ndi imodzi mwa mapulojekiti akuluakulu omanga mizinda ku US. Kutumiza mapaipi okwana matani 2,340 a mainchesi akuluakulu kunafunika kukonzedwa motsatizana. Womic inatumiza mapaipi m'magawo 6 otumizidwa m'miyezi 8, iliyonse ikuyembekezeka kufika nthawi yochepa isanayambe kuyikidwa. Mapaipi anatumizidwa kuchokera ku Shanghai kupita ku Port of Los Angeles, kenako anatumizidwa ndi galimoto yaikulu makilomita 8 kupita kumaloko. Tinagwiritsa ntchito zotengera za flat rack za mapaipi a 1,016mm ndi 1,220mm kuti tisawonongeke.

●Zofunikira za US Buy America- Pulojekitiyi idafuna kuti zitsulo zakunja zichotsedwe chifukwa mafakitale aku US sanathe kupanga ma diameter akuluakulu (1,220mm) mu makulidwe ofunikira a khoma mkati mwa nthawi. Womic adapereka zikalata zonse kuphatikizapo ziphaso za fakitole, dziko lochokera, komanso kutsata zinthu. Chiphasocho chidavomerezedwa ndi mwiniwake.

●Zotsatira:Nyumba zomangira ma transmission tower zinamalizidwa mu 2022. Zakhala zodziwika bwino pa malo ochitira masewera a SoFi Stadium. Kontrakitala adanena kuti mapaipi onse a LSAW anagwirizana bwino popanda kukonzedwanso. Chomangira chachitsulo chomwe chinaonekera chinayamikiridwa ndi katswiri wa zomangamanga. Kuyambira pamenepo, Womic Steel yapemphedwa kuti ipereke ma projekiti ena achitsulo ku US.

Lumikizanani nafe:
Webusaiti: www.womicsteel.com
Imelo: sales@womicsteel.com

Foni / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568

Womic Steel – Mnzanu wodalirika wa mapaipi achitsulo a ASTM A500 Giredi C LSAW omangira mizati, ma thrass a milatho, nsanja zotumizira, ndi ntchito zolemera padziko lonse lapansi.

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