Izinto eziluncedo kwi-Double Submerged Arc Welded Gas Line Pipe
Kwihlabathi lemibhobho yamanzi, kukho iindlela ezahlukeneyo zokwakha kunye nezinto zokwakha.Indlela yokudibanisa umbhobho ethandwayo yi-double-ended submerged arc welding (DSAW).Ubuchwephesha busetyenziswa ngokuqhelekileyo kwimizila yegesi kunye namanzi, kwaye ngesizathu esihle.Kule bhlog siza kuphonononga iingenelo zokusebenzisaI-arc entywiliselwe kabini idityanisiweumbhobho kwezi zicelo.
IiPropati zoomatshini bombhobho we-SSAW
ibakala lentsimbi | ubuncinci amandla esivuno | Ubuncinci bokuqina kwamandla | Ubuncinci bobude |
B | 245 | 415 | 23 |
X42 | 290 | 415 | 23 |
X46 | 320 | 435 | 22 |
X52 | 360 | 460 | 21 |
X56 | 390 | 490 | 19 |
X60 | 415 | 520 | 18 |
X65 | 450 | 535 | 18 |
X70 | 485 | 570 | 17 |
Ukwakhiwa kweeKhemikhali zemibhobho ye-SSAW
ibakala lentsimbi | C | Mn | P | S | V+Nb+Ti |
Ubuninzi % | Ubuninzi % | Ubuninzi % | Ubuninzi % | Ubuninzi % | |
B | 0.26 | 1.2 | 0.03 | 0.03 | 0.15 |
X42 | 0.26 | 1.3 | 0.03 | 0.03 | 0.15 |
X46 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
X52 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
X56 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
X60 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
X65 | 0.26 | 1.45 | 0.03 | 0.03 | 0.15 |
X70 | 0.26 | 1.65 | 0.03 | 0.03 | 0.15 |
Unyamezelo lweJiyometri yemibhobho ye-SSAW
Ukunyamezela kwejometri | ||||||||||
ngaphandle kwedayimitha | Ubunzima bodonga | ukuthi tye | ngaphandle kokujikeleza | ubunzima | Ubude be-weld bead | |||||
D | T | |||||||||
≤1422mm | ngaphezu kwe-1422 mm | <15mm | ≥15mm | umbhobho ekupheleni 1.5m | ubude obuphelele | umzimba wombhobho | ukuphela kombhobho | T≤13mm | T-13mm | |
±0.5% | njengoko kuvunyelwene | ±10% | ±1.5mm | 3.2mm | 0.2% L | 0.020D | 0.015D | '+10% | 3.5mm | 4.8mm |
Uvavanyo lweHydrostatic
Umbhobho uya kumelana novavanyo lwe-hydrostatic ngaphandle kokuvuza ngomthungo we-weld okanye umzimba wombhobho
Izihlanganisi akufuneki zivavanywe nge-hydrostatically, ngaphandle kokuba iindawo zombhobho ezisetyenzisiweyo ekuphawuleni izihlanganisi ziye zavavanywa ngempumelelo nge-hydrostatically phambi komsebenzi wokudityaniswa.
Okokuqala, i-arc ye-arc i-welding efakwe kabini yindlela efanelekileyo kunye neyoqoqosho yokujoyina imibhobho.Inkqubo ibandakanya ukwenza i-weld ngokufaka umbhobho kwi-granular flux usebenzisa ii-arcs ezimbini ze-welding.Oku kudala i-weld eyomeleleyo kwaye ehlala ixesha elide enokumelana noxinzelelo oluphezulu kunye noxinzelelo, iyenze ilungele igesi kunye nemigca yamanzi.
Enye yeengenelo eziphambili zombhobho odityanisiweyo we-arc odityanisiweyo kukuxhathisa umhlwa.I-granular flux esetyenziswe kule nkqubo ye-welding idala uluhlu olukhuselayo phezu kwe-weld, inceda ukuthintela ukubola kunye nokwandisa ubomi bombhobho.Oku kubaluleke ngakumbi kwiiityhubhu zomgca wamanzi, njengoko iqinisekisa ukuba amanzi aziswayo ahlala ecocekile kwaye engenasulelo.
Ukongeza kwi-corrosion resistance, imibhobho edityanisiweyo ye-arc edityanisiweyo inikezela ngeempawu ezibalaseleyo zoomatshini.Le ndlela ivelisa i-welds efanayo kunye nombhobho oqinileyo nothembekileyo.Oku kubalulekile kwimibhobho yegesi yendalo njengoko iqinisekisa uthutho olukhuselekileyo nolusebenzayo lwerhasi yendalo ngaphandle komngcipheko wokuvuza okanye ukusilela.
Ukongeza, imibhobho edityanisiweyo ye-arc ephindwe kabini iyakwazi ukumelana nobushushu obugqithisileyo kunye neemeko zokusingqongileyo.Oku kubenza balungele usetyenziso oluselunxwemeni kunye nolwandle olunokuthi lube sesichengeni semozulu embi kunye neemeko zokusebenza.Kwityhubhu yomgca wamanzi, oku kuhlala kuqinisekisa ukuba imibhobho inokuhambisa amanzi ngokufanelekileyo ngaphandle kokuphazamisa ukusebenza.
Enye inzuzo yokusebenzisa umbhobho odityanisiweyo we-arc odityanisiweyo kukuba umphezulu wayo ugudile kwaye umhle.Oku kubenza babe lukhetho olunomtsalane kufakelo olungaphezulu nangaphantsi komhlaba, njengoko kulula ukuluhlola nokugcina.Ukongezelela, indawo epholileyo ye-weld inciphisa ukungqubuzana kunye noxinzelelo loxinzelelo ngaphakathi kombhobho, inceda ukuphucula ukusebenza kakuhle kwegesi kunye neenkqubo zokuhanjiswa kwamanzi.
Ukuqukumbela, umbhobho odityanisiweyo we-arc odityanisiweyo lukhetho olunenzuzo kakhuluumbhobho wegesikunye netyhubhu yomgca wamanzi.Inkqubo ye-welding esebenzayo kunye neendleko ezisebenzayo, kunye nokuxhathisa ukubola, iipropati ezigqwesileyo zemishini, ukuqina kunye nobuhle, yenza kube yinto yokuqala yokukhetha ukwakhiwa kwemibhobho.Nokuba zithutha irhasi yendalo okanye amanzi, le mibhobho inika amandla kunye nokuthembeka okufunekayo ukuze isebenze ngokukhuselekileyo nangempumelelo.Ngokucacileyo, umbhobho odityanisiweyo we-arc odityanisiweyo we-arc uyi-asethi exabisekileyo kwihlabathi lolwakhiwo lombhobho.