Mafotokozedwe Akatundu
LSAW (Longitudinal Submerged Arc Welding) mapaipi achitsulo ndi mtundu wa chitoliro chachitsulo chopangidwa ndi chitsulo chomwe chimadziwika ndi kupanga kwawo kwapadera komanso ntchito zosiyanasiyana.Mapaipiwa amapangidwa popanga mbale yachitsulo kukhala cylindrical mawonekedwe ndikuwotcherera kwa nthawi yayitali pogwiritsa ntchito njira zowotcherera za arc pansi pamadzi.Nazi mwachidule mapaipi achitsulo a LSAW:
Njira Yopangira:
● Kukonzekera Kwambale: Zitsulo zazitsulo zapamwamba zimasankhidwa malinga ndi zofunikira zenizeni, kuonetsetsa kuti makina omwe amafunidwa ndi opangidwa ndi mankhwala.
● Kupanga: Chitsulo chachitsulo chimapangidwa kukhala chitoliro cha cylindrical kudzera m'njira monga kupindika, kupindika, kapena kukanikiza (JCOE ndi UOE).M'mphepete mwake amapindika kale kuti athandizire kuwotcherera.
● Kuwotcherera: Kutsekemera kwa arc (SAW) kumagwiritsidwa ntchito, kumene arc imasungidwa pansi pa flux layer.Izi zimapanga ma welds apamwamba kwambiri okhala ndi zolakwika zochepa komanso kuphatikiza kwabwino kwambiri.
● Akupanga Kuyendera: Pambuyo kuwotcherera, kuyezetsa kwa akupanga kumachitidwa kuti azindikire zolakwika zilizonse zamkati kapena zakunja mu weld zone.
● Kukulitsa: Chitolirocho chikhoza kukulitsidwa kuti chikwaniritse m'mimba mwake ndi makulidwe a khoma, kukulitsa kulondola kwa dimensional.
● Kuyendera Komaliza: Kuyesa kwathunthu, kuphatikizapo kuyang'ana kowoneka, kuyang'ana kwa dimensional, ndi kuyesa katundu wamakina, kumatsimikizira ubwino wa chitoliro.
Ubwino:
● Kugwiritsa Ntchito Ndalama: Mapaipi a LSAW amapereka njira yotsika mtengo yopangira mapaipi aatali-diameter ndi mapangidwe apangidwe chifukwa cha kupanga kwawo bwino.
● Mphamvu Yapamwamba: Njira yowotcherera yautali imabweretsa mapaipi okhala ndi makina amphamvu komanso ofanana.
● Kulondola kwa Dimensional: Mapaipi a LSAW amawonetsa miyeso yolondola, kuwapangitsa kukhala oyenera kugwiritsa ntchito movomerezeka.
● Weld Quality: Kuwotcherera kwa arc pansi pamadzi kumapanga ma welds apamwamba kwambiri omwe amasakanikirana bwino komanso zolakwika zochepa.
● Kusinthasintha: Mapaipi a LSAW amagwiritsidwa ntchito m'mafakitale osiyanasiyana, kuphatikizapo mafuta ndi gasi, zomangamanga, ndi zoperekera madzi, chifukwa cha kusinthasintha kwake komanso kukhalitsa.
Mwachidule, mapaipi achitsulo a LSAW amapangidwa pogwiritsa ntchito njira yolondola komanso yothandiza, zomwe zimapangitsa kuti pakhale mipope yodalirika, yotsika mtengo, komanso yokhazikika yomwe imayenera kugwiritsidwa ntchito pamakampani osiyanasiyana.
Zofotokozera
API 5L: GR.B, X42, X46, X52, X56, X60, X65, X70, X80 |
ASTM A252: GR.1, GR.2, GR.3 |
EN 10219-1: S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H |
EN10210: S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H |
ASTM A53/A53M: G.A, GR.B |
EN 10217: P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, P265TR2 |
DIN 2458: St37.0, St44.0, St52.0 |
AS/NZS 1163: Gulu C250 , Gulu C350, Gulu C450 |
GB/T 9711: L175, L210, L245, L290, L320 , L360, L390 , L415, L450 , L485 |
ASTMA671: CA55/CB70/CC65, CB60/CB65/CB70/CC60/CC70, CD70/CE55/CE65/CF65/CF70, CF66/CF71/CF72/CF73, CG100/CH100/CI100/CJ10 |
Mtundu Wopanga
Kunja Diameter | Likupezeka khoma makulidwe kwa pansi zitsulo kalasi | |||||||
Inchi | mm | Kalasi yachitsulo | ||||||
Inchi | mm | L245(Gr.B) | L290(X42) | L360(X52) | L415(X60) | L450(X65) | L485(X70) | L555(X80) |
16 | 406 | 6.0-50.0mm | 6.0-48.0mm | 6.0-48.0mm | 6.0-45.0mm | 6.0-40 mm | 6.0-31.8mm | 6.0-29.5mm |
18 | 457 | 6.0-50.0mm | 6.0-48.0mm | 6.0-48.0mm | 6.0-45.0mm | 6.0-40 mm | 6.0-31.8mm | 6.0-29.5mm |
20 | 508 | 6.0-50.0mm | 6.0-50.0mm | 6.0-50.0mm | 6.0-45.0mm | 6.0-40 mm | 6.0-31.8mm | 6.0-29.5mm |
22 | 559 | 6.0-50.0mm | 6.0-50.0mm | 6.0-50.0mm | 6.0-45.0mm | 6.0-43 mm | 6.0-31.8mm | 6.0-29.5mm |
24 | 610 | 6.0-57.0mm | 6.0-55.0mm | 6.0-55.0mm | 6.0-45.0mm | 6.0-43 mm | 6.0-31.8mm | 6.0-29.5mm |
26 | 660 | 6.0-57.0mm | 6.0-55.0mm | 6.0-55.0mm | 6.0-48.0mm | 6.0-43 mm | 6.0-31.8mm | 6.0-29.5mm |
28 | 711 | 6.0-57.0mm | 6.0-55.0mm | 6.0-55.0mm | 6.0-48.0mm | 6.0-43 mm | 6.0-31.8mm | 6.0-29.5mm |
30 | 762 | 7.0-60.0mm | 7.0-58.0mm | 7.0-58.0mm | 7.0-48.0mm | 7.0-47.0mm | 7.0-35 mm | 7.0-32.0mm |
32 | 813 | 7.0-60.0mm | 7.0-58.0mm | 7.0-58.0mm | 7.0-48.0mm | 7.0-47.0mm | 7.0-35 mm | 7.0-32.0mm |
34 | 864 | 7.0-60.0mm | 7.0-58.0mm | 7.0-58.0mm | 7.0-48.0mm | 7.0-47.0mm | 7.0-35 mm | 7.0-32.0mm |
36 | 914 | 8.0-60.0mm | 8.0-60.0mm | 8.0-60.0mm | 8.0-52.0mm | 8.0-47.0mm | 8.0-35 mm | 8.0-32.0mm |
38 | 965 | 8.0-60.0mm | 8.0-60.0mm | 8.0-60.0mm | 8.0-52.0mm | 8.0-47.0mm | 8.0-35 mm | 8.0-32.0mm |
40 | 1016 | 8.0-60.0mm | 8.0-60.0mm | 8.0-60.0mm | 8.0-52.0mm | 8.0-47.0mm | 8.0-35 mm | 8.0-32.0mm |
42 | 1067 | 8.0-60.0mm | 8.0-60.0mm | 8.0-60.0mm | 8.0-52.0mm | 8.0-47.0mm | 8.0-35 mm | 8.0-32.0mm |
44 | 1118 | 9.0-60.0mm | 9.0-60.0mm | 9.0-60.0mm | 9.0-52.0mm | 9.0-47.0mm | 9.0-35 mm | 9.0-32.0mm |
46 | 1168 | 9.0-60.0mm | 9.0-60.0mm | 9.0-60.0mm | 9.0-52.0mm | 9.0-47.0mm | 9.0-35 mm | 9.0-32.0mm |
48 | 1219 | 9.0-60.0mm | 9.0-60.0mm | 9.0-60.0mm | 9.0-52.0mm | 9.0-47.0mm | 9.0-35 mm | 9.0-32.0mm |
52 | 1321 | 9.0-60.0mm | 9.0-60.0mm | 9.0-60.0mm | 9.0-52.0mm | 9.0-47.0mm | 9.0-35 mm | 9.0-32.0mm |
56 | 1422 | 10.0-60.0mm | 10.0-60.0mm | 10.0-60.0mm | 10.0-52 mm | 10.0-47.0mm | 10.0-35 mm | 10.0-32.0mm |
60 | 1524 | 10.0-60.0mm | 10.0-60.0mm | 10.0-60.0mm | 10.0-52 mm | 10.0-47.0mm | 10.0-35 mm | 10.0-32.0mm |
64 | 1626 | 10.0-60.0mm | 10.0-60.0mm | 10.0-60.0mm | 10.0-52 mm | 10.0-47.0mm | 10.0-35 mm | 10.0-32.0mm |
68 | 1727 | 10.0-60.0mm | 10.0-60.0mm | 10.0-60.0mm | 10.0-52 mm | 10.0-47.0mm | 10.0-35 mm | 10.0-32.0mm |
72 | 1829 | 10.0-60.0mm | 10.0-60.0mm | 10.0-60.0mm | 10.0-52 mm | 10.0-47.0mm | 10.0-35 mm | 10.0-32.0mm |
* Kukula kwina kumatha kusinthidwa pambuyo pokambirana
Mapangidwe a Chemical ndi Mechanical Properties a LSAW Steel Pipe
Standard | Gulu | Kapangidwe ka Chemical(max)% | Katundu Wamakina(mphindi) | |||||
C | Mn | Si | S | P | Yield Strength (Mpa) | Tensile Strength (Mpa) | ||
GB/T700-2006 | A | 0.22 | 1.4 | 0.35 | 0.050 | 0.045 | 235 | 370 |
B | 0.2 | 1.4 | 0.35 | 0.045 | 0.045 | 235 | 370 | |
C | 0.17 | 1.4 | 0.35 | 0.040 | 0.040 | 235 | 370 | |
D | 0.17 | 1.4 | 0.35 | 0.035 | 0.035 | 235 | 370 | |
GB/T1591-2009 | A | 0.2 | 1.7 | 0.5 | 0.035 | 0.035 | 345 | 470 |
B | 0.2 | 1.7 | 0.5 | 0.030 | 0.030 | 345 | 470 | |
C | 0.2 | 1.7 | 0.5 | 0.030 | 0.030 | 345 | 470 | |
Chithunzi cha EN10025 | Chithunzi cha S235JR | 0.17 | 1.4 | - | 0.035 | 0.035 | 235 | 360 |
Chithunzi cha S275JR | 0.21 | 1.5 | - | 0.035 | 0.035 | 275 | 410 | |
Chithunzi cha S355JR | 0.24 | 1.6 | - | 0.035 | 0.035 | 355 | 470 | |
Mtengo wa 17100 | Chithunzi cha ST37-2 | 0.2 | - | - | 0.050 | 0.050 | 225 | 340 |
Chithunzi cha ST44-2 | 0.21 | - | - | 0.050 | 0.050 | 265 | 410 | |
Chithunzi cha ST52-3 | 0.2 | 1.6 | 0.55 | 0.040 | 0.040 | 345 | 490 | |
Chithunzi cha JIS G3101 | Chithunzi cha SS400 | - | - | - | 0.050 | 0.050 | 235 | 400 |
Chithunzi cha SS490 | - | - | - | 0.050 | 0.050 | 275 | 490 | |
API 5L PSL1 | A | 0.22 | 0.9 | - | 0.03 | 0.03 | 210 | 335 |
B | 0.26 | 1.2 | - | 0.03 | 0.03 | 245 | 415 | |
X42 | 0.26 | 1.3 | - | 0.03 | 0.03 | 290 | 415 | |
x46 | 0.26 | 1.4 | - | 0.03 | 0.03 | 320 | 435 | |
X52 | 0.26 | 1.4 | - | 0.03 | 0.03 | 360 | 460 | |
x56 | 0.26 | 1.1 | - | 0.03 | 0.03 | 390 | 490 | |
X60 | 0.26 | 1.4 | - | 0.03 | 0.03 | 415 | 520 | |
x65 | 0.26 | 1.45 | - | 0.03 | 0.03 | 450 | 535 | |
X70 | 0.26 | 1.65 | - | 0.03 | 0.03 | 585 | 570 |
Standard & Giredi
Standard | Maphunziro a Zitsulo |
API 5L: Kufotokozera kwa Line Pipe | GR.B, X42, X46, X52, X56, X60, X65, X70, X80 |
ASTM A252: Mafotokozedwe Okhazikika a Milu ya Zitsulo Zowotcherera ndi Zopanda Msoko | GR.1, GR.2, GR.3 |
TS EN 10219-1: Magawo Ozizira Omwe Opangidwa Ndi Mazebo Opanda Zopanda Aloyi ndi Zitsulo Zabwino Zambewu | S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H |
TS EN 10210 Magawo Otentha Omaliza Pamabowo Opanda Aloyi ndi Zitsulo Zambewu Zabwino | S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H |
ASTM A53/A53M: Chitoliro, Chitsulo, Chakuda ndi Choviikidwa, Zinc-Zokutidwa, Zowotcherera komanso Zopanda Seamless | G.A, GR.B |
TS EN 10208 Mapaipi achitsulo omwe amagwiritsidwa ntchito pamayendedwe amapaipi m'mafakitale amafuta ndi gasi. | L210GA, L235GA, L245GA, L290GA, L360GA |
TS EN 10217: Machubu achitsulo osungunula pazolinga zopanikizika | P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, Chithunzi cha P265TR2 |
DIN 2458: Mapaipi Achitsulo Osungunuka ndi Machubu | St37.0, St44.0, St52.0 |
AS/NZS 1163: Muyezo wa Australia/New Zealand wa Zigawo Zopanda Zitsulo Zozizira Zopangidwa ndi Cold-formed | Kalasi C250 , Kalasi C350, Kalasi C450 |
GB/T 9711: Makampani a Petroleum ndi Gasi Wachilengedwe - Chitoliro cha Zitsulo cha Mapaipi | L175, L210, L245, L290, L320, L360, L390, L415, L450, L485 |
ASTM A671: Magetsi-Fusion-Welded Steel Pipe ya Atmospheric and Lower Temperature | CA 55, CB 60, CB 65, CB 70, CC 60, CC 65, CC 70 |
ASTM A672: Chitoliro chachitsulo chophatikizika chamagetsi chogwiritsa ntchito kuthamanga kwambiri pakutentha kwapakati. | A45, A50, A55, B60, B65, B70, C55, C60, C65 |
ASTM A691: Carbon ndi aloyi zitsulo chitoliro, magetsi-fusion-welded ntchito yothamanga kwambiri pa kutentha kwambiri. | CM-65, CM-70, CM-75, 1/2CR-1/2MO, 1CR-1/2MO, 2-1/4CR, 3CR |
Njira Yopangira
Kuwongolera Kwabwino
● Kuyang'ana Zinthu Zosafunika
● Kusanthula Mankhwala
● Kuyesa Kwamakina
● Kuyang’ana M’maso
● Kuwona Mlingo
● Bend Test
● Kuyesa Kwamphamvu
● Intergranular Corrosion Test
● Mayeso Osawononga (UT, MT, PT)
● Kuyenerera kwa Njira Yowotcherera
● Microstructure Analysis
● Kuyesa kwa Flaring ndi Flattening
● Mayeso Olimba
● Mayeso a Hydrostatic
● Mayeso a Metallography
● Hydrogen Induced Cracking Test (HIC)
● Sulfide Stress Cracking Test (SSC)
● Mayeso a Eddy Panopa
● Kuyang’anira Kupenta ndi Kupaka
● Kubwereza Zolemba
Kugwiritsa Ntchito & Kugwiritsa Ntchito
Mapaipi achitsulo a LSAW (Longitudinal Submerged Arc Welding) amapeza ntchito zosiyanasiyana m'mafakitale osiyanasiyana chifukwa cha kukhulupirika kwawo komanso kusinthasintha.Pansipa pali zina mwazofunikira komanso kugwiritsa ntchito mapaipi achitsulo a LSAW:
● Mayendedwe a Mafuta ndi Gasi: Mapaipi achitsulo a LSAW amagwiritsidwa ntchito kwambiri m'makampani amafuta ndi gasi pamakina a mapaipi.Mapaipiwa amagwiritsidwa ntchito ponyamula mafuta osapsa, gasi, ndi madzi ena kapena mpweya.
● Zomangamanga za Madzi: Mapaipi a LSAW amagwiritsidwa ntchito m'mapulojekiti okhudzana ndi madzi, kuphatikizapo kayendedwe ka madzi ndi ngalande.
● Chemical Processing: Mapaipi a LSAW amagwira ntchito m'mafakitale opangira mankhwala komwe amagwiritsidwa ntchito potumiza mankhwala, zakumwa, ndi mpweya m'njira yotetezeka komanso yothandiza.
● Ntchito Zomangamanga ndi Zomangamanga: Mapaipi amenewa amagwiritsidwa ntchito pomanga zinthu zosiyanasiyana, monga pomanga maziko, milatho, ndi ntchito zina zomanga.
● Kuphatikizira: Mapaipi a LSAW amagwiritsidwa ntchito pomanga ntchito kuti apereke chithandizo choyambira pa ntchito yomanga, kuphatikizapo maziko omanga ndi nyumba zapamadzi.
● Gawo la Mphamvu: Amagwiritsidwa ntchito kunyamula mitundu yosiyanasiyana ya mphamvu, kuphatikizapo nthunzi ndi madzi otentha m'mafakitale opangira magetsi.
● Migodi: Mapaipi a LSAW amapeza ntchito m'mapulojekiti a migodi pofuna kutumiza zipangizo ndi tailing.
● Njira Zamakampani: Mafakitale monga kupanga ndi kupanga amagwiritsa ntchito mapaipi a LSAW m'njira zosiyanasiyana zamafakitale, kuphatikiza kutumiza zinthu zopangira ndi zomalizidwa.
● Kupititsa patsogolo Zomangamanga: Mipope imeneyi ndi yofunika kwambiri popanga ntchito zomanga zinthu monga misewu, misewu ikuluikulu, ndi zinthu zapansi panthaka.
● Thandizo Lamapangidwe: Mapaipi a LSAW amagwiritsidwa ntchito popanga zida zothandizira, mizati, ndi matabwa pomanga ndi zomangamanga.
● Kupanga zombo: Pazopanga zombo zapamadzi, mapaipi a LSAW amagwiritsidwa ntchito pomanga mbali zosiyanasiyana za zombo, kuphatikizapo ziboliboli ndi zigawo za zomangamanga.
● Makampani Oyendetsa Magalimoto: Mapaipi a LSAW angagwiritsidwe ntchito popanga zigawo zamagalimoto, kuphatikizapo makina otulutsa mpweya.
Mapulogalamuwa akuwonetsa kusinthasintha kwa mapaipi achitsulo a LSAW m'magawo osiyanasiyana, chifukwa cha kulimba kwawo, mphamvu zawo, komanso kuyenerera kwazinthu zosiyanasiyana zachilengedwe.
Kupaka & Kutumiza
Kunyamula ndi kutumiza bwino kwa LSAW (Longitudinal Submerged Arc Welding) mapaipi achitsulo ndikofunikira kuti awonetsetse mayendedwe awo otetezeka komanso kutumiza kumalo osiyanasiyana.Nawa kufotokoza kwanthawi zonse kulongedza ndi njira zotumizira mapaipi achitsulo a LSAW:
Kulongedza:
● Kumanga m'mapaipi: Mapaipi a LSAW nthawi zambiri amangiriridwa palimodzi kapena Chigawo Chimodzi amapakidwa pogwiritsa ntchito zingwe zachitsulo kapena zomangira kuti apange mayunitsi otheka kugwira ntchito ndi mayendedwe.
● Chitetezo: Mapeto a mapaipi amatetezedwa ndi zipewa zapulasitiki kuti asawonongeke panthawi yodutsa.Kuphatikiza apo, mapaipi amatha kuphimbidwa ndi zinthu zoteteza kuti ateteze kuzinthu zachilengedwe.
● Anti-Corrosion Coating: Ngati mapaipi ali ndi anti-corrosion anti-corrosion, kukhulupirika kwa chophimba kumatsimikiziridwa panthawi yolongedza kuti zisawonongeke panthawi yogwira ndi kuyendetsa.
● Kulemba ndi Kulemba: Mtolo uliwonse umalembedwa ndi mfundo zofunika monga kukula kwa chitoliro, kalasi yazinthu, nambala ya kutentha, ndi zina kuti zizindikiridwe mosavuta.
● Kuteteza: Mitolo imamangiriridwa motetezeka pamipando kapena pazitsulo zotsetsereka kuti zisasunthe poyenda.
Manyamulidwe:
● Njira Zoyendera: Mipope yachitsulo ya LSAW ingatumizedwe pogwiritsa ntchito njira zosiyanasiyana zoyendera, kuphatikizapo msewu, njanji, nyanja, kapena mpweya, malingana ndi kumene mukupita ndi changu.
● Kuyika nkhonya: Mipope imatha kutumizidwa m'mitsuko kuti itetezedwe, makamaka panthawi yopita kunja.Zotengera zimapakidwa ndikutetezedwa kuti zisasunthike pakadutsa.
● Logistics Partners: Makampani odziwika bwino oyendetsa katundu kapena onyamula odziwa kugwira ntchito ndi mapaipi achitsulo akugwira ntchito kuti atsimikizire kuti akutumizidwa motetezeka komanso panthawi yake.
● Zolemba za Forodha: Zolemba zofunikira za kasitomu, kuphatikizapo bili za katundu, zikalata zoyambira, ndi mapepala ena ofunikira, zimakonzedwa ndikutumizidwa kumayiko ena.
● Inshuwaransi: Malingana ndi mtengo ndi mtundu wa katunduyo, inshuwaransi ingakonzedwe kuti itetezedwe ku zochitika zosayembekezereka paulendo.
● Kutsata: Njira zamakono zotsatirira zimalola kuti wotumiza ndi wolandira azitha kuyang'anira momwe katunduyo akuyendera mu nthawi yeniyeni, kuwonetsetsa kuwonekera ndi zosintha panthawi yake.
● Kutumiza: Mipope imatsitsidwa kumalo amene mukupita, potsatira njira zoyenera zotsitsira kuti zisawonongeke.
● Kuyang'anira: Pofika, mapaipi angayang'anitsidwe kuti atsimikizire momwe alili komanso kuti akugwirizana ndi zofunikira asanavomerezedwe ndi wolandira.
Kunyamula ndi kutumiza zinthu moyenera kumathandiza kupewa kuwonongeka, kusunga kukhulupirika kwa mapaipi achitsulo a LSAW, ndikuwonetsetsa kuti akufika kumalo omwe amawafunira mosamala komanso moyenera.