I-SSAW Steel Pipe Welding Procedures For Gas Lines

Incazelo emfushane:

Uma kuziwa ekufakweni kwepayipi legesi, ukuqinisekisa ukuphepha nokuthembeka kwesistimu kubalulekile.Isici esibalulekile senqubo inqubo yokushisela esetshenziselwa ukujoyina izingxenye ezihlukahlukene zepayipi legesi, ikakhulukazi uma usebenzisa ipayipi lensimbi ye-SSAW.Kule bhulogi, sizocubungula ukubaluleka kwezinqubo zokushisela amapayipi ezifanele ekufakweni kwamapayipi egesi kusetshenziswa ipayipi lensimbi le-SSAW.

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Ipayipi lensimbi le-SSAW, eyaziwa nangokuthi ipayipi elishiselwe i-arc elingaphansi kwamanzi, livame ukusetshenziswa ekufakweni kwamapayipi egesi ngenxa yokuqina namandla awo.Kodwa-ke, ukusebenza kahle kwala mapayipi kuncike kakhulu kwikhwalithi yezinqubo zokushisela ezisetshenziswa ngesikhathi sokufakwa.Amasu okushisela angalungile angabangela amalunga abuthakathaka futhi alimale, okuholela ezingozini ezingase zibe khona zokuphepha kanye nokuhluleka kwesistimu.

Impahla Mechanical

izinga lensimbi	amandla amancane esivuno Mpa		Amandla aqinile		Ubude obuncane %	Amandla omthelela amancane J
izinga lensimbi	Ugqinsi olucacisiwe mm		Ugqinsi olucacisiwe mm		Ugqinsi olucacisiwe mm	at test lokushisa
	＜16	＞16≤40	＜3	≥3≤40	≤40	-20 ℃	0℃	20℃
I-S235JRH	235	225	360-510	360-510	24	-	-	27
I-S275J0H	275	265	430-580	410-560	20	-	27	-
I-S275J2H	275	265	430-580	410-560	20	27	-	-
I-S355J0H	365	345	510-680	470-630	20	-	27	-
I-S355J2H						27	-	-
I-S355K2H						40	-	-

Esinye sezici ezibalulekile ekuqinisekiseni ubuqotho bokufakwa kwepayipi legesi kusetshenziswa ipayipi lensimbi eli-spiral submerged arc elishiselwe ukukhethwa kwenqubo yokushisela efanele.Lokhu kuhlanganisa ukucatshangelwa ngokucophelela kwezindlela zokushisela, izinto zokugcwalisa kanye nokulungiswa kwangaphambili kwe-weld.Ukwengeza, ukuhambisana namazinga nemithetho yemboni kubalulekile ukuze kuqinisekiswe ukwethembeka nokuphepha kweulayini wegesisizinhlelo.

Ukulungiswa okufanele kwangaphambi kokushisela kubalulekile ukuze kuqinisekiswe ukushiselwa okuyimpumelelo kwamapayipi ensimbi afakwe ngaphansi kwe-arc ashiselwe ekufakweni kwelayini yegesi.Lokhu kuhilela ukuhlanzwa okuphelele nokuhlolwa kwendawo yepayipi ukuze kukhishwe noma yikuphi ukungcola noma amaphutha angase athinte ikhwalithi ye-weld.Ukwengeza, ukuze kuzuzwe i-weld eqinile futhi enokwethenjelwa, ipayipi kufanele ilinganiswe ngokunembile futhi ihambisane.

Ngesikhathi senqubo ye-welding yangempela, ukunaka imininingwane kanye nokuhambisana nenqubo efanele kubalulekile.Ukukhetha indlela yokushisela efanele, kungakhathaliseki ukuthi i-TIG (i-tungsten inert gas welding), i-MIG (i-metal inert gas welding) noma i-SMAW (i-stick arc welding), kufanele ikhethwe ngokusekelwe ezidingweni ezithile zokufakwa kwepayipi legesi.Ukwengeza, ukusetshenziswa kwezinto zokugcwalisa ezisezingeni eliphakeme kanye nezinqubo zokushisela ngokucophelela kubalulekile ekukhiqizeni ama-welds athembekile futhi ahlala isikhathi eside ahlangabezana nezidingo zokusebenza kwamapayipi egesi.

Ukwengeza, ukuhlolwa nokuhlolwa kwe-post-weld kuyizinyathelo ezibalulekile zokuqinisekisa ikhwalithi ye-weld nobuqotho ekufakweni kwepayipi legesi kusetshenziswa ipayipi lensimbi le-SSAW.Izindlela zokuhlola ezingalimazi, njengokuhlola i-radiographic kanye nokuhlolwa kwe-ultrasonic, zingasiza ekuhlonzeni noma yikuphi ukonakala okungaba khona noma ukungaqhubeki emalungeni ashiselwe ukuze alungiswe ngokushesha futhi aqinisekise ukwethembeka kwesistimu yakho yamapayipi egesi.

Kafushane, izinqubo zokushisela ezilungile zibalulekile ekufakeni izintambo zegesi kusetshenziswa amapayipi ensimbi a-spiral angaphansi kwe-arc ashiselwe.Ubuqotho nokuphepha kwesistimu yakho yamapayipi egesi kuncike kwikhwalithi yokushisela kwakho, ngakho-ke izindinganiso zemboni yokushisela kanye nezindlela ezihamba phambili kufanele zilandelwe.Ngokubeka phambili ukulungiswa okufanele kwangaphambi kokushisela, amasu okushisela ngokucophelela, kanye nokuhlolwa okuphelele kwangemuva kokushiselwa, izifaki zamapayipi egesi zingaqinisekisa ukwethembeka nokuphepha kokufakwa kwamapayipi ensimbi e-SSAW ekufakweni kwepayipi legesi.