ASTM A53 ERWpombi yesimbiRudzi Emune zvirevo zveA53, zvakagadzirwa nenzira ye resistance welding, uye inowanikwa mumagiredhi ese ari maviri eGiredhi A neGiredhi B.
Inonyanya kukodzera kushandiswa kwemakanika uye kumanikidzwa uye inowanzoshandiswawo senzira yekufambisa utsi, mvura, gasi, nemhepo.
Zvakanakira zvepombi yesimbi yeERW, zvakaita semutengo wakadererauyekubereka kwakanyanya, ita kuti ive chinhu chinosarudzwa pakushandiswa kwemaindasitiri akawanda.
Simbi yeBotopikambani inogadzira mapaipi esimbi ecarbon ane welded emhando yepamusoro uye inopa kubva kuChina, uye zvakare inotengesa mapaipi esimbi asina musono, ichikupa mhinduro dzakasiyana-siyana dzemapaipi esimbi!
Zvinhu zvedu zvirimo zvakakwana uye tinokwanisa kusangana nekukurumidza nezvinodiwa nevatengi vedu zvehukuru hwakasiyana-siyana uye huwandu.
ASTM A53/A53M inosanganisira mhando nemagiredhi anotevera:
Rudzi E: Yakasungirirwa inodzivirira magetsi, Magiredhi A neB.
Rudzi S: Yakatsetseka, Magiredhi A neB.
Rudzi F: Yakasungirirwa nechoto, inoenderera mberi yakasungirirwa magiredhi A neB.
Rudzi EuyeRudzi Smhando mbiri dzemapaipi dzinoshandiswa zvakanyanya. Kusiyana neizvi,Rudzi Finowanzo shandiswa pamachubhu madiki ane dhayamita. Nekuda kwekufambira mberi kwetekinoroji yekuwedera, nzira iyi yekugadzira haiwanzo shandiswa kakawanda.
Dhayamita dzezita: DN 6 - 650 [NPS 1/8 - 26];
Dhayamita yekunze: 10.3 - 660 mm [0.405 - 26 in.];
Ukobvu hwemadziro uye machati ehuremu hwepombi yesimbi:
Machubhu ekupedzisira akatsetseka anogona kuonekwa muTafura X2.2;
Machubhu ane shinda neakabatanidzwa anogona kuonekwa muTafura X2.3.
ASTM A53 inobvumirawo kuiswa kwepombi nezvimwe zviyero chero bedzi pombi ichisangana nezvimwe zvese zvinodiwa zvechirevo ichi.
ERWinoshandiswa zvakanyanya kugadzira mapaipi esimbi akaita sedenderedzwa, sikweya, uye rectangular ane kabhoni uye simbi ine alloy yakaderera.
Chinotevera ndicho chigadzirwa chekugadzirapombi yesimbi yeERW yakatenderera:
a) Kugadzirira zvinhu: Chishandiso chekutanga chinowanzova macoil esimbi anomonerwa nekupisa. Macoil aya anotanga atetepa uye achekwa kusvika paupamhi hunodiwa.
b) Kugadzira: Zvishoma nezvishoma, kuburikidza nemarongero akatevedzana, mutsetse wacho unoumbwa kuita chimiro chedenderedzwa chakavhurika. Munguva iyi, mipendero yemutsetse uyu inoswededzwa pamwe chete zvishoma nezvishoma mukugadzirira kusungirirwa.
c) Kushongedza: Mushure mekuumba chimiro chechubhu, mipendero yesimbi inodziiswa nekusashanda kwemagetsi munzvimbo yekuwelding. Mvura inoyerera nepamusoro inopfuudzwa nepakati pechinhu chacho, uye kupisa kunobva mukusashanda kunoshandiswa kupisa mipendero kusvika pakunyunguduka kwayo, uye inobva yabatanidzwa pamwe chete nekumanikidzwa.
d) Kubvisa gomba kubva mugomba: Mushure mekusonera, maburi esimbi anobviswa mukati nekunze kwepombi kuti pave nechokwadi chekuti mukati mepombi mune nzvimbo yakatsetseka.
e) Saizi uye kureba: Mushure mekunge machubhu apera kupwanywa nekubviswa kwehuni, machubhu anopfuudzwa nemuchina wehukuru kuti agadziriswe mativi awo kuti ave nechokwadi chekuti anosangana nezvinodiwa zvedhayamita chaiyo uye kutenderera. Machubhu acho anochekwa kusvika pakureba kwakatemwa.
f) Kuongorora nekuyedza: Pombi yesimbi ichaongororwa zvakasimba, kusanganisira kuyedzwa kwe ultrasonic, kuyedzwa kwe hydrostatic, nezvimwewo, kuve nechokwadi chekuti mhando yepombi yesimbi inosangana nezvinodiwa uye zvakatarwa.
g) Kurapa pamusoro: Chekupedzisira, pombi yesimbi inogona kuitiswa mamwe marapirwo akadai sekupisa dip galvanizing, kupenda, kana mamwe marapirwo epamusoro kuti ipe dziviriro yekuwedzera ngura uye runako.
Kupinza mumhando yeE kana kuti F Grade BPombi inofanira kugadziriswa nekupisa kana kugadziriswa neimwe nzira mushure mekusonera kuitira kuti martensite isina kunyoroveswa isavepo.
Tembiricha yekurapa kupisa inofanira kunge iri pasi pe1000°F [540°C].
Kana pombi yakawedzerwa nechando, kuwedzera hakufanirwe kudarika1.5%yedhayamita yekunze yakatarwa yepombi.
AZvinhu zvishanuCu, Ni, Cr, MouyeVpamwe chete hazvifanirwe kudarika 1.00%.
BPakudzikiswa kwega kwega kwe0.01% pasi pehuwandu hwakatarwa hwekabhoni, kuwedzera kwe0.06% yemanganese pamusoro pehuwandu hwakatarwa kuchabvumidzwa kusvika pa1.35%.
CPakudzikiswa kwega kwega kwe0.01% pasi pehuwandu hwakatarwa hwekabhoni, kuwedzera kwe0.06% yemanganese pamusoro pehuwandu hwakatarwa kuchabvumidzwa kusvika pa1.65%.
Nzvimbo Inosungirira
| Rondedzero | Kupatsanura | Giredhi A | Giredhi B |
| Simba rekusimba, min | MPa [psi] | 330 [48,000] | 415 [60,000] |
| Simba rekupa, min | MPa [psi] | 205 [30,000] | 240 [35,000] |
| Kureba kwe50 mm [2 in.] | Cherechedza | A,B | A,B |
Cherechedza A: Kureba kushoma mu 2 in[50 mm] kunofanira kunge kuri iko kunosarudzwa ne equation inotevera:
e = 625,000 [1940] A0.2/U0.9
e = kureba kushoma mu 2 in kana 50 mm mu percent, zvakatenderedzwa kusvika pa percent iri pedyo
A = diki pane 0.75 mu2[500 mm]2] uye nzvimbo yakachinjika yemuenzaniso wekuyedza kumanikidzwa, yakaverengerwa uchishandisa dhayamita yekunze yakatarwa yepombi, kana upamhi hwemuenzaniso wekuyedza kumanikidzwa uye ukobvu hwemadziro hwakatarwa hwepombi, nemutengo wakaverengerwa wakatenderedzwa kusvika pa0.01 in.2 [1 mm]2].
U = simba rekudhonza rakasarudzwa, psi [MPa].
Cherechedza B: Ona Tafura X4.1 kana Tafura X4.2, chero ipi zvayo inoshanda, kuti uwane hunhu hushoma hwekureba hunodiwa pakubatanidza kwakasiyana-siyana kwehukuru hwemuenzaniso wekumanikidzwa uye simba rakatarwa rekudhonza.
Bvunzo reKukombama
Papombi DN ≤ 50 [NPS ≤ 2], kureba kwakakwana kwepombi kunofanira kukotama kutonhora ne90° kutenderedza mandrel ine cylindrical, iyo dhayamita yayo inopetwa kagumi nemaviri kupfuura dhayamita yekunze yakatarwa yepombi, pasina kutsemuka pane chero chikamu uye pasina kuvhura weld.
Kaviri-kwakasimba zvakanyanya(kirasi yehuremu:XXS) pombi pamusoro peDN 32 [NPS 1 1/4] haifanirwe kuedzwa kuti iite sei.
Muedzo weKubata-bata
Kuedzwa kwekutsetseka kunofanira kuitwa papombi yakasungirirwa pamusoro peDN 50 ine huremu hwakasimba (XS) kana hwakareruka.
Yakakodzera machubhu emhando E, Giredhi A neB; uye Type F, Giredhi B.
Machubhu esimbi asina musono haafanirwe kuyedzwa.
Nguva Yekuyedza
Pamapombi ese emhando yeS, Type E, uye Type F Grade B, kumanikidzwa kwekuyedza kunofanira kuchengetedzwa kwemasekonzi mashanu.
Kuedzwa kwe hydrostatic kunofanira kuitwa, pasina kubuda kwemvura kuburikidza nemusono we weld kana muviri wepombi.
Kumanikidzwa Kwebvunzo
Pombi isina magumoinofanira kuongororwa ne hydrostatic kudzvanywa kwakakodzera kwakapihwa muTafura X2.2,
Pombi ine shinda uye yakabatanainofanira kuongororwa ne hydrostatic kudzvanywa kwakakodzera kwakapihwa muTafura X2.3.
Pamapaipi esimbi ane DN ≤ 80 [NPS ≤ 80], kumanikidzwa kwekuyedza hakufanirwe kudarika 17.2MPa;
Pamapaipi esimbi ane DN ＞80 [NPS ＞80], kumanikidzwa kwekuyedza hakufanirwe kudarika 19.3MPa;
Kumanikidzwa kwakanyanya kwekuyedza kunogona kusarudzwa kana paine zvinodiwa zveinjiniya zvakakosha, asi izvi zvinoda kutaurirana pakati pemugadziri nemutengi.
Kumaka
Kana pombi yakaedzwa ne hydrostatic, chiratidzo chinofanira kuratidzakumanikidzwa kwekuyedza.
Zvinodiwa zvinotevera zvinoshanda pamhando yeE neType F Grade B Pipe.
Pombi isina musono ine zvimwe zvinodiwa zvisina kukurukurwa mugwaro rino.
Nzira Dzekuyedza
Mapaipi anogadzirwa nemichina yekuwedzera uye yekudzikisa madziro isingatsvedzeri kupisa: DN ≥ 50 [NPS ≥ 2], iyoweldsmuchikamu chimwe nechimwe chepombi vanofanira kupasa bvunzo yemagetsi isingaparadze, uye nzira yekuyedza inofanira kuenderana neE213, E273, E309 kana E570mwero.
Mapaipi eERW anogadzirwa nemuchina unoderedza dhayamita unopisa: DN ≥ 50 [NPS ≥ 2]Chikamu chimwe nechimweyepombi inofanira kuongororwa zvizere kuburikidza nekuyedzwa kwemagetsi kusingaparadze, izvo zvinofanirwa kuenderana nemutemo weE213, E309, kanaE570mitemo.
Cherechedza: Muchina wekuwedzera dhayamita yekupisa unotambanudza nekudzvanya machubhu esimbi nguva dzose nemaroller pakupisa kwakanyanya kuti ugadzirise dhayamita dzawo neukobvu hwemadziro.
Kumaka
Kana chubhu yacho yakaongororwa isingaparadze, zvakakosha kuratidzaNDEpachiratidzo.
Misa
± 10%.
Pombi DN ≤ 100 [NPS ≤ 4], inoyerwa sebhechi.
Mapaipi DN > 100 [NPS > 4], akayerwa kuita zvidimbu chimwe chete.
Dhayamita
Pamuchina wepaipi DN ≤40 [NPS≤ 1 1/2], shanduko yeOD haifanirwe kudarika ±0.4 mm [1/64 in.].
Pamuchina weDN ≥50 [NPS>2], shanduko yeOD haifanirwe kudarika ±1%.
Ukobvu
Ukobvu hwemadziro hushoma hahufanirwe kuva pasi pe87.5%ukobvu hwemadziro hwakatarwa.
huremu hwakareruka kupfuura hwakasimba zvakanyanya (XS):
a) pombi isina magumo: 3.66 - 4.88m [12 - 16 ft], Kwete kupfuura 5% yehuwandu hwese.
b) hurefu huviri husina kurongeka: ≥ 6.71 m [22 ft], Avhareji yehurefu hushoma hwe10.67m [35 ft].
c) Hurefu hwemhando imwe chete: 4.88 -6.71m [16 - 22 ft], husingapfuure 5% yehuwandu hwehurefu hweshinda dzakagadzirwa dziri majointers (zvidimbu zviviri zvakabatana).
Kurema kwakanyanya (XS) kana kurema zvakanyanya: 3.66-6.71 m [12 - 22 ft], kwete kupfuura 5% huwandu hwepombi 1.83 - 3.66 m [6 - 12 ft].
PaASTM, pombi yesimbi yeA53 inowanikwa mutema kana kuti yakabatidzwa.
Nhema: Machubhu esimbi asina kugadziriswa pamusoro, anowanzo kutengeswa zvakananga mushure mekugadzirwa, kune ayo mashandisirwo asina imwe nzira yekudzivirira ngura inodiwa.
Mapaipi esimbi akagadzirwa nesimbi anofanira kusangana nezvinodiwa.
Maitiro
Zinc inofanira kuputirwa mukati nekunze nekupisa-kunyika.
Zvinhu Zvisina Kugadzirwa
Zinc inoshandiswa pakuputira inofanira kunge iri yemhando ipi zvayo yezinc inoenderana nezvinodiwa neSpecialASTM B6.
Chitarisiko
Pombi yesimbi inofanira kunge isina nzvimbo dzisina kuputirwa, mabubble emhepo, ma flux deposits, uye coarse slag inclusions. Mapundu, mabundu, ma globules, kana huwandu hwakawanda hwe zinc deposits dzinokanganisa kushandiswa kwezvinhu hazvifanirwe kubvumidzwa.
Kurema kweKubata Kwakakurudzira
Zvinofanira kusarudzwa nekuyedzwa kwemapundu zvichienderana nenzira yekuyedza yeASTM A90.
Kurema kwekuputira hakufanirwe kunge kuri pasi pe 0.55 kg/m² [1.8 oz/ft²].
ASTM A53 ERW pombi yesimbiinowanzo shandiswa mumashandisirwo ane simba shoma kusvika pakati nepakati akadai seinjiniya yemuguta, kuvaka, uye mapaipi ekuvaka. Zvinowanzoitika zvinosanganisira kutakura mvura, utsi, mhepo, nezvimwe zvinwiwa zvine simba shoma.
Nekugona kupinza zvakanaka, dzakakodzera kugadzira mashandiro anosanganisira kumonereka, kukotama, uye kuputira.
