Ipayipi Lensimbi Elishiselwe Okuvunguza Ngepayipi Legesi Yemvelo Elingaphansi Komhlaba

Incazelo emfushane:

Lokhu kucaciswa kuhlanganisa amabanga amahlanu wepayipi lensimbi elihlanganisiwe (arc) elishiselwe i-helical-seam.Ipayipi lenzelwe ukudlulisa uketshezi, igesi noma umhwamuko.

Ngemigqa engu-13 yokukhiqiza yepayipi lensimbi elivunguzayo, iCangzhou Spiral Steel pipes group Co., Ltd. iyakwazi ukwenza amapayipi ensimbi ane-helical-seam anobubanzi obungaphandle ukusuka ku-219mm kuya ku-3500mm nogqinsi olufika ku-25.4mm.

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Yethula:

Amapayipi egesi yemvelo angaphansi komhlaba adlala indima ebalulekile ekuletheni lesi sisetshenziswa esiyigugu emakhaya, amabhizinisi nezimboni.Ukuqinisekisa ukuphepha nokusebenza kahle kwala mapayipi, kubalulekile ukusebenzisa izinto ezifanele kanye nezinqubo zokushisela ngesikhathi sokwakha.Sizohlola ukubaluleka kwepayipi lensimbi elivunguzayo kanye nokubaluleka kokulandela izinqubo zokushisela amapayipi lapho usebenzaipayipi legesi yemvelo elingaphansi komhlaba.

Ipayipi elishiselwe ku-Spiral:

Ipayipi elishiselwe i-Spiral lidumile ekwakhiweni kwamapayipi egesi yemvelo angaphansi komhlaba ngenxa yamandla alo angokwemvelo nokuqina.La mapayipi akhiwa ngokugoba umucu wensimbi oqhubekayo ube yizimo ezithandelayo bese awushisela eduze kwemithungo.Umphumela uba amapayipi anamalungu aqinile, avaliwe angakwazi ukumelana nezingcindezi zangaphandle ezibalulekile futhi azivumelanise nokunyakaza komhlabathi.Lesi sakhiwo esiyingqayizivele senzaKuvunguza ashiselwe steel ipayipiilungele amapayipi angaphansi komhlaba lapho ukuzinza kubalulekile.

Impahla Mechanical

	Ibanga A	Ibanga B	Ibanga C	Ibanga D	Ibanga E
Amandla esivuno, min, Mpa(KSI)	330(48)	415(60)	415(60)	415(60)	445(66)
Amandla e-tensile, min, Mpa(KSI)	205(30)	240(35)	290(42)	315(46)	360(52)

Ukwakheka Kwamakhemikhali

Isici	Ukwakhiwa, Ubukhulu, %
Isici	Ibanga A	Ibanga B	Ibanga C	Ibanga D	Ibanga E
Ikhabhoni	0.25	0.26	0.28	0.30	0.30
IManganese	1.00	1.00	1.20	1.30	1.40
Phosphorus	0.035	0.035	0.035	0.035	0.035
Isibabule	0.035	0.035	0.035	0.035	0.035

Ukuhlolwa kwe-Hydrostatic

Ubude bepayipi ngalinye kufanele buhlolwe ngumenzi kumfutho we-hydrostatic ozokhiqiza odongeni lwamapayipi ingcindezi engekho ngaphansi kuka-60% wamandla esivuno amancane ashiwo ekamelweni lokushisa.Ingcindezi izonqunywa yi-equation elandelayo:
P=2St/D

Ukwehluka Okuvumelekile Kwesisindo Nobukhulu

Ubude bepayipi ngalinye buzokalwa ngokuhlukene futhi isisindo salo akumele sihluke ngaphezu kuka-10% ngaphezulu noma u-5.5% ngaphansi kwesisindo salo esicatshangelwayo, kubalwe kusetshenziswa ubude balo nesisindo salo ngobude beyunithi ngayinye.
Idayamitha yangaphandle akumele ihluke ngaphezu kuka-±1% ukusuka kububanzi obukhethekile obushiwo bengaphandle.
Ukujiya kodonga kunoma iyiphi indawo akufanele kube ngaphezu kuka-12.5% ngaphansi kogqinsi olushiwo.

Ubude

Ubude obungahleliwe obubodwa: 16 kuya ku-25ft(4.88 kuya ku-7.62m)
Ubude obuphindwe kabili obungahleliwe: ngaphezulu kwama-25ft kuya ku-35ft(7.62 kuya ku-10.67m)
Ubude obufanayo: ukuhluka okuvumelekile ±1in

Iyaphela

Izinqwaba zamapayipi zizonikezwa iziphetho ezicacile, futhi ama-burrs ekugcineni azosuswa.
Lapho ukuphela kwepayipi okushiwo ukuthi kube yi-bevel iphela, i-engeli izoba ngu-30 kuya ku-35 degree

Izinqubo zokushisela amapayipi:

Okufanelekileizinqubo zokushisela amapayipizibalulekile ekuqineni nasekuphepheni kwamapayipi egesi yemvelo angaphansi komhlaba.Nazi izici ezimbalwa ezibalulekile okufanele uzicabangele:

1. Iziqu zokushisela:Abashiseli abaqeqeshiwe nabanolwazi kufanele baqashwe, baqinisekise ukuthi banezitifiketi ezidingekayo kanye nobuchwepheshe bokusingatha izinqubo zokushisela ezidingekayo kumapayipi egesi yemvelo.Lokhu kusiza ukunciphisa ubungozi bokulimala kwe-welding kanye nokuvuza okungenzeka.

2. Ukulungiselela nokuhlanza ngokuhlanganyela:Ukulungiselela ngokuhlanganyela kubalulekile ngaphambi kokushisela.Lokhu kubandakanya ukususa noma yikuphi ukungcola, udoti noma ukungcola okungase kuthinte kabi ubuqotho be-weld.Ukwengeza, ukuvala imiphetho yamapayipi kusiza ekudaleni ukuhlangana okushiselwe okuqinile.

3. Amasu okushisela namapharamitha:Amasu okushisela alungile kanye nemingcele kufanele ilandelwe ukuze kutholwe ama-welds ekhwalithi ephezulu.Inqubo yokushisela kufanele icabangele izici ezinjengokuqina kwepayipi, indawo yokushisela, ukwakheka kwegesi, njll. Kunconywa ukusebenzisa izinqubo zokushisela ezizenzakalelayo ezifana negesi yensimbi ye-arc welding (GMAW) noma i-arc welding engaphansi kwamanzi (SAW) ukuze kuqinisekiswe imiphumela engaguquki futhi kuncishiswe abantu. iphutha.

4. Ukuhlola Nokuhlola:Ukuhlolwa okuphelele nokuhlolwa kwe-weld kubalulekile ukuze kuqinisekiswe ikhwalithi nobuqotho bayo.Ubuchwepheshe obufana nokuhlola okungabhubhisi (i-NDT), okuhlanganisa i-X-ray noma ukuhlolwa kwe-ultrasonic, kungathola noma yikuphi ukonakala okungase kubeke engcupheni ukwethembeka kwesikhathi eside kwepayipi.

Ekuphetheni:

Ukwakhiwa kwamapayipi egesi yemvelo angaphansi komhlaba kusetshenziswa ipayipi lensimbi elisontekile kudinga ukulandelwa kwezinqubo zokushisela zamapayipi ezifanele.Ngokuqasha abashiseli abaqeqeshiwe, ukulungisa amalunga ngokucophelela, ukulandela izindlela ezifanele zokushisela, nokwenza ukuhlola okuphelele, singaqinisekisa ukuphepha, ukuqina, nokusebenza kahle kwala mapayipi.Ngokunaka ngokucophelela imininingwane yenqubo yokushisela, singaletha ngokuzethemba igesi yemvelo ukuze sihlangabezane nezidingo zamandla emiphakathi yethu kuyilapho sibeka kuqala inhlalakahle yemvelo nokuphepha komphakathi.