Intengiso eshushu ye-China API 5L iSeamless Line Pipe yentsimbi (X42, X46, X52)
Isishwankathelo
Konke esikwenzayo kuhlala kuqhagamshelwe kumgaqo wethu othi "uMthengi kuqala, ukuKholwa kuqala", sinikela malunga nomgangatho ophezulu kunye nokuhanjiswa ngokukhawuleza kwemibhobho yethu yemveliso, Njengoko siqhubela phambili, sibambe iliso kuluhlu lwethu lweemveliso ezihlala zikhula kwaye siphucule. kwiinkampani zethu.
Sizimisele ukuhlangabezana nazo zonke iimfuno zakho kunye nokusombulula naziphi na iingxaki zobuchwepheshe onokudibana nazo kumashishini akho. Iimveliso zethu ezikhethekileyo kunye nezisombululo kunye nolwazi oluninzi lwetekhnoloji lusenza sibe lolona khetho lukhethwayo kubathengi bethu.
Ngokweemfuno ezisemgangathweni, iimfuno zokusebenza zemibhobho yentsimbi yombhobho ziyahluka, kwaye ubushushu bobushushu bunokwahlulwa ngokwezi ntlobo zilandelayo:
1. Ubushushu obuphantsi (150-250 degrees)
Ulwakhiwo olufunyenwe ngobushushu obuphantsi bobushushu bubushushu be-martensite. Injongo yalo kukunciphisa uxinzelelo lwangaphakathi kunye nokunyanzeliswa kwentsimbi ecinyiweyo ngelixa ugcina ubunzima obuphezulu kunye nokuxhatshazwa okuphezulu kwentsimbi ecinyiweyo, ukwenzela ukuba ugweme ukuqhekeka okanye ukulimala kwangaphambili ngexesha lokusetyenziswa. Isetyenziswa kakhulu kwizixhobo zokusika eziphezulu zekhabhoni ephezulu, izixhobo zokulinganisa, imibhobho yentsimbi yombhobho, iibheringi eziqengqelekayo kunye neenxalenye zecarburized, njl.
2. Ubushushu obuphakathi (250-500 degrees)
Ulwakhiwo olufunyenwe ngokufudumeza kubushushu obuphakathi yi-troostite epholileyo. Injongo yayo kukufumana amandla esivuno esiphezulu, umda we-elastic kunye nokuqina okuphezulu. Ke ngoko, isetyenziswa ikakhulu kunyango lwemibhobho eyahlukeneyo yentsimbi kunye nokungunda okutshisayo, kwaye ukuqina emva kobushushu ngokuqhelekileyo yi-HRC35-50.
3. Ubushushu obuphezulu (500-650 degrees)
Ulwakhiwo olufunyenwe ngobushushu obuphezulu bobushushu bubushushu be-sorbite. Ngokwesiko, unyango lobushushu oludibanisa ukucima kunye nobushushu obuphezulu bubizwa ngokuba kukucinywa kunye nonyango lobushushu, injongo yalo kukufumana iipropathi ezibanzi zoomatshini kunye namandla amahle, ukuqina, iplastiki kunye nokuqina. Ke ngoko, isetyenziswa kakhulu kwiimoto, kwimibhobho yentsimbi yombhobho, izixhobo zoomatshini kunye nezinye iindawo ezibalulekileyo zesakhiwo, ezifana neentonga zokudibanisa, iibholiti, iigiya kunye neeshafts. Ubulukhuni emva kobushushu ngokuqhelekileyo yi-HB200-330.
Isicelo
Umbhobho usetyenziselwa ukuthutha i-oyile, umphunga kunye namanzi atsalwa phantsi emhlabeni ukuya kushishino lwe-oyile negesi kushishino ngombhobho.
IBanga eliPhambili
IBakala API 5L line umbhobho intsimbi: Gr.B X42 X52 X60 X65 X70
ICandelo leMichiza
| IBanga leNsimbi (Igama lentsimbi) | Iqhekeza leMass, ngokuSekwe kubushushu kunye noHlalutya lweMvelisoa,g% | |||||||
| C | Mn | P | S | V | Nb | Ti | ||
| ubuninzi b | ubuninzi b | imiz | max | max | max | max | max | |
| Umbhobho ongenamthungo | ||||||||
| L175 okanye A25 | 0.21 | 0.60 | - | 0.030 | 0.030 | - | - | - |
| I-L175P okanye i-A25P | 0.21 | 0.60 | 0.045 | 0.080 | 0.030 | - | - | - |
| L210 okanye A | 0.22 | 0.90 | - | 0.030 | 0.030 | - | - | - |
| L245 okanye B | 0.28 | 1.20 | - | 0.030 | 0.030 | c,d | c,d | d |
| L290 okanye X42 | 0.28 | 1.30 | - | 0.030 | 0.030 | d | d | d |
| L320 okanye X46 | 0.28 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L360 okanye X52 | 0.28 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L390 okanye X56 | 0.28 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L415 okanye X60 | 0.28 e | 1.40 e | - | 0.030 | 0.030 | f | f | f |
| L450 okanye X65 | 0.28 e | 1.40 e | - | 0.030 | 0.030 | f | f | f |
| L485 okanye X70 | 0.28 e | 1.40 e | - | 0.030 | 0.030 | f | f | f |
| Umbhobho odityanisiweyo | ||||||||
| L175 okanye A25 | 0.21 | 0.60 | - | 0.030 | 0.030 | - | - | - |
| I-L175P okanye i-A25P | 0.21 | 0.60 | 0.045 | 0.080 | 0.030 | - | - | - |
| L210 okanye A | 0.22 | 0.90 | - | 0.030 | 0.030 | - | - | - |
| L245 okanye B | 0.26 | 1.20 | - | 0.030 | 0.030 | c,d | c,d | d |
| L290 okanye X42 | 0.26 | 1.30 | - | 0.030 | 0.030 | d | d | d |
| L320 okanye X46 | 0.26 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L360 okanye X52 | 0.26 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L390 okanye X56 | 0.26 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L415 okanye X60 | 0.26 e | 1.40 e | - | 0.030 | 0.030 | f | f | f |
| L450 okanye X65 | 0.26 e | 1.45 e | - | 0.030 | 0.030 | f | f | f |
| L485 okanye X70 | 0.26 e | 1.65 e | - | 0.030 | 0.030 | f | f | f |
| a Cu ≤ 0.50%; Ni ≤ 0.50 %; Cr ≤ 0.50 % kunye ne-Mo ≤ 0.15%. b Ngokunciphisa ngakunye kwe-0.01% ngaphantsi kwe-concentration ephezulu echaziweyo ye-carbon, ukunyuka kwe-0.05% ngaphezu kwe-concentration ephezulu echaziweyo kwi-Mn kuvumelekile, ukuya kuthi ga kwi-1.65 % kumabakala ≥ L245 okanye B, kodwa ≤ L360 okanye X52; ukuya kutsho kubuninzi be-1.75 % kumabakala > L360 okanye X52, kodwa <L485 okanye X70; ukuya kutsho kwi-2.00 % kwiBakala L485 okanye X70. c Ngaphandle kokuba kuvunyelwene ngenye indlela, Nb + V ≤ 0.06 %. d Nb + V + Ti ≤ 0.15%. e Ngaphandle kokuba kuvunyelwene ngenye indlela. f Ngaphandle kokuba kuvunyelwene ngenye indlela, Nb + V + Ti ≤ 0.15 %. g Akukho kongezwa ngamabom kwe-B kuvunyelwe kwaye intsalela ye-B ≤ 0.001%. | ||||||||
IPropati yoomatshini
|
IBanga lombhobho | Umzimba wombhobho wePipe engenamthungo kunye neWelded | I-Weld Seam ye-EW, LW, SAW, kunye ne-COWUmbhobho | ||
| Unikeze Amandlaa Rt0.5 | Tensile strengtha Rm | Elongation(kwi-50 mm okanye 2 ngaphakathi.)Af | Tensile strengthb Rm | |
| MPa (psi) | MPa (psi) | % | MPa (psi) | |
| imiz | imiz | imiz | imiz | |
| L175 okanye A25 | 175 (25,400) | 310 (45,000) | c | 310 (45,000) |
| I-L175P okanye i-A25P | 175 (25,400) | 310 (45,000) | c | 310 (45,000) |
| L210 okanye A | 210 (30,500) | 335 (48,600) | c | 335 (48,600) |
| L245 okanye B | 245 (35,500) | 415 (60,200) | c | 415 (60,200) |
| L290 okanye X42 | 290 (42,100) | 415 (60,200) | c | 415 (60,200) |
| L320 okanye X46 | 320 (46,400) | 435 (63,100) | c | 435 (63,100) |
| L360 okanye X52 | 360 (52,200) | 460 (66,700) | c | 460 (66,700) |
| L390 okanye X56 | 390 (56,600) | 490 (71,100) | c | 490 (71,100) |
| L415 okanye X60 | 415 (60,200) | 520 (75,400) | c | 520 (75,400) |
| L450 okanye X65 | 450 (65,300) | 535 (77,600) | c | 535 (77,600) |
| L485 okanye X70 | 485 (70,300) | 570 (82,700) | c | 570 (82,700) |
| a Kumabanga aphakathi, umahluko phakathi kobuncinane bamandla e tensile obuchaziweyo obuncinane obuchaziweyo bomzimba wombhobho uya kuba njengoko unikwe kwitheyibhile yebakala eliphezulu elilandelayo. iyakuba lixabiso elifanayo njengoko bekumisiwe kumzimba wombhobho kusetyenziswa umbhalo osemazantsi a).c Ubuncinane bobude obuchaziweyo,Af, echazwe ngepesenti yaze yasondezwa kweyona pesenti ikufutshane, iya kuba njengoko kumiselwe kusetyenziswa le nxaki ilandelayo:
apho C yi 1940 kubalo usebenzisa iiyunithi SI kunye 625,000 ukubala usebenzisa iiyunithi USC; AI-xc yindawo yovavanyo lwe-tensile esebenzayo, echazwe ngeemilimitha ezisisikwere (i-intshi ezisikweri), ngolu hlobo lulandelayo: 1) kwisetyhula iziqwenga zovavanyo ezinqamlezayo, i-130 mm2 (0.20 in.2) ye-12.7 mm (0.500 in.) kunye ne-8.9 mm (0.350 in.) i-diameter test pieces; 65 mm2 (0.10 in.2) 6.4 mm (0.250 in.) amaqhekeza uvavanyo ububanzi; 2) kwiziqwenga zovavanyo olupheleleyo, i-a) 485 mm2 (0.75 in.2) kunye b) nommandla onqamlezileyo wesiqwenga sovavanyo, ethathwe kusetyenziswa ubungakanani obuchaziweyo bangaphandle kunye nobukhulu bodonga oluchaziweyo lombhobho, usondezwe kweyona 10 mm2 ikufutshane (0.01 in.2); 3) kwiziqwenga zovavanyo lwe-strip, encinci ye-a) 485 mm2 (0.75 in.2) kunye b) indawo enqamlezayo yesiqwenga sovavanyo, ethathwe kusetyenziswa ububanzi obuchaziweyo beqhekeza lovavanyo kunye nobukhulu bodonga oluchaziweyo lombhobho. , ijikelezwe kwi-10 mm2 ekufutshane (0.01 in.2); U Ngamandla okuqina achaziweyo asezantsi, abonakaliswe ngee-megapascals (iiponti nge-intshi nganye). | ||||
Ngaphandle kwedayimitha, ngaphandle kokungqukuva kunye nobukhulu bodonga
| Icaciswe Ngaphandle kweDiameter D (ngaphakathi) | Unyamezelo lweDayimitha, i-intshi d | Out-of-Roundness Ukunyamezelana kwi | ||||
| Umbhobho ngaphandle kwesiphelo a | Isiphelo sombhobho a,b,c | Umbhobho ngaphandle kokuphela a | Isiphelo sombhobho a,b,c | |||
| Umbhobho we-SMLS | Umbhobho odityanisiweyo | Umbhobho we-SMLS | Umbhobho odityanisiweyo | |||
| < 2.375 | -0,031 ukuba + 0.016 | – 0,031 ukuba + 0.016 | 0.048 | 0.036 | ||
| ≥2.375 ukuba 6.625 | 0.020D ye | 0.015D ye | ||||
| +/- 0.0075D | – 0,016 ukuba + 0.063 | D/t≤75 | D/t≤75 | |||
| Ngesivumelwano sokuba | Ngesivumelwano sokuba | |||||
| > 6.625 ukuba 24.000 | +/- 0.0075D | +/- 0.0075D, kodwa ubuninzi be-0.125 | +/- 0.005D, kodwa ubuninzi be-0.063 | 0.020D | 0.015D | |
| > 24 ukuya kuma-56 | +/- 0.01D | +/- 0.005D kodwa ubuninzi be-0.160 | +/- 0.079 | +/- 0.063 | 0.015D kodwa ubuninzi be-0.060 | 0.01D kodwa ubuninzi be-0.500 |
| Kuba | Kuba | |||||
| D/t≤75 | D/t≤75 | |||||
| Ngesivumelwano | Ngesivumelwano | |||||
| ngenxa | ngenxa | |||||
| D/t≤75 | D/t≤75 | |||||
| >56 | Njengoko kuvunyelwene | |||||
| a. Isiphelo sombhobho siquka ubude be-4 kwisitya ngasinye sombhobho | ||||||
| b. Kumbhobho we-SMLS unyamezelo lwesicelo se-t≤0.984in kwaye unyamezelo lombhobho oshinyeneyo luya kuba njengoko kuvunyelwene. | ||||||
| c. Ngombhobho owandisiweyo kunye ne-D≥8.625in kunye nombhobho ongandisiyo, ukunyamezela kwedayamitha kunye nokunyamezela ngaphandle kokujikeleza kunokumiselwa ngokusebenzisa i-diameter yangaphakathi ebalwayo okanye ukulinganisa ngaphakathi kwedayimitha kune-OD echaziweyo. | ||||||
| d. Ukumisela ukuthotyelwa kokunyamezela kwedayamitha, ububanzi bombhobho buchazwa njengesangqa sombhobho kuyo nayiphi na indiza ejikelezayo eyahlulwe nguPi. | ||||||
| Ubunzima bodonga | Ukunyamezela a |
| t intshi | intshi |
| Umbhobho we-SMLS b | |
| ≤ 0.157 | -1.2 |
| > 0.157 ukuba <0.948 | + 0.150t / – 0.125t |
| ≥ 0.984 | + 0.146 okanye + 0.1t, nokuba yeyiphi na enkulu |
| – 0.120 okanye – 0.1t, nokuba yeyiphi enkulu | |
| Umbhobho odityanisiweyo c,d | |
| ≤ 0.197 | +/- 0.020 |
| > 0.197 ukuba <0.591 | +/- 0.1t |
| ≥ 0.591 | +/- 0.060 |
| a. Ukuba umyalelo wokuthenga ukhankanya unyamezelo oluthabatha ubungakanani bodonga obuncinane kunexabiso elisebenzayo elinikiweyo kule theyibhile, ukunyamezela okudityanisiweyo kobukhulu bodonga kuya kwandiswa ngesixa esaneleyo ukugcina uluhlu olusebenzayo lonyamezelo. | |
| b. Ngombhobho one-D≥ 14.000 ngaphakathi kunye ne-t≥0.984in, ukunyamezela kobunzima bodonga ekuhlaleni kunokugqithisa ukunyamezela kobunzima bodonga nge-0.05t eyongezelelweyo ngaphandle kokuba ukunyamezela kobunzima akugqithiswanga. | |
| c. Ukunyamezelana kunye nokuqina kodonga akusebenzi kwindawo ye-weld | |
| d. Bona i-API5L epheleleyo ngeenkcukacha ezipheleleyo | |
Ukunyamezelana
Imfuneko yoVavanyo
Uvavanyo lweHydrostatic
Umbhobho wokumelana novavanyo lwe-hydrostatic ngaphandle kokuvuza ngomthungo we-weld okanye umzimba wombhobho. Izihlanganisi akufuneki zivavanywe i-hydrostatic zibonelela ngamacandelo emibhobho asetyenzisiweyo avavanywe ngempumelelo.
Bend uvavanyo
Akukho zintanda ziya kwenzeka kuyo nayiphi na inxalenye yesiqwenga sovavanyo kwaye akukho kuvulwa kwe-weld kuya kwenzeka.
Uvavanyo lokucaba
Iikhrayitheriya zokwamkelwa kovavanyo lokucaba iya kuba:
- Imibhobho ye-EW D<12.750 kwi:
- X60 nge T 500in. Akusayi kubakho kuvulwa kwe-weld phambi kokuba umgama phakathi kweepleyiti ungaphantsi kwe-66% ye-diameter yangaphandle yokuqala. Kuwo onke amabakala kunye nodonga, i-50%.
- Ngombhobho nge-D / t> 10, akuyi kubakho ukuvulwa kwe-weld ngaphambi kokuba umgama phakathi kwamacwecwe ungaphantsi kwe-30% ye-diameter yangaphambili yangaphandle.
- Ngobunye ubungakanani bhekisa kwi-API 5L epheleleyo.
Uvavanyo lwempembelelo yeCVN yePSL2
Uninzi lwemibhobho yePSL2 kunye namabanga afuna i-CVN. Umbhobho ongenamthungo kufuneka uvavanywe emzimbeni. Umbhobho odityanisiweyo kufuneka uvavanywe emzimbeni, umbhobho weld kunye nendawo echaphazelekayo kubushushu. Jonga kwi-API 5L epheleleyo yenkcazo yetshathi yobungakanani kunye namabanga kunye namaxabiso afunekayo afunxa amandla.
