I-Spiral Welded Tube Arc Welding Of Natural Gas Pipes

Incazelo emfushane:

I-arc welding iyisinyathelo esibalulekile enqubweni yokukhiqizaKuvunguza ashiselwe tubes, ikakhulukaziipayipi legesi yemvelos.Kubandakanya ukusebenzisa amazinga okushisa aphezulu ukuze kwakheke isibopho esiqinile, esiqinile phakathi kwamapayipi, ukuqinisekisa ukusebenza okuthembekile nokuhlala isikhathi eside.Kulesi sihloko, thina'ngizocwilisa ebunzimeni bepayipi legesi yemvelo elishiselwe i-spiral welded arc nokuthi kungani'sa ingxenye ebalulekile yemboni yamapayipi.

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Ngobaipayipi legesi yemvelos, ukuphepha nokuthembeka kubaluleke kakhulu.Ukushisela i-arc kudlala indima ebalulekile ekuqinisekiseni ukuthi la mapayipi angakwazi ukumelana nezimo ezinzima abhekana nazo ngesikhathi sokusebenza kwawo.Inqubo yokushisela i-arc ihlanganisa ukusebenzisa ugesi ukukhiqiza ukushisa okunamandla okuncibilikisa imiphetho yamapayipi futhi iwahlanganise ndawonye.

Okujwayelekile	Ibanga lensimbi	Ukwakheka kwamakhemikhali									Izakhiwo ze-tensile							I-Charpy Impact Test kanye ne-Drop Weight Tear Test
		C	Si	Mn	P	S	V	Nb	Ti		CEV4) (%)	Rt0.5 Mpa Amandla okukhiqiza		Rm Mpa Tensile Amandla		Rt0.5/Rm	(L0=5.65 √ S0)Elongation A%
		ubuningi	ubuningi	ubuningi	ubuningi	ubuningi	ubuningi	ubuningi	ubuningi	Okunye	ubuningi	imiz	ubuningi	imiz	ubuningi	ubuningi	imiz
	L245MB	0.22	0.45	1.2	0.025	0.15	0.05	0.05	0.04	1)	0.4	245	450	415	760	0.93	22	Ukuhlolwa komthelela we-Charpy: Amandla amunca umthelela womzimba wepayipi kanye nomthungo wokushisela kuzohlolwa njengoba kudingekile ngokwezinga lokuqala.Ukuze uthole imininingwane, bheka izinga lokuqala.Ukuhlolwa kokudabula kwesisindo sokwehla: Indawo yokugunda ongayikhetha
I-GB/T9711-2011 (PSL2)	L290MB	0.22	0.45	1.3	0.025	0.015	0.05	0.05	0.04	1)	0.4	290	495	415			21
	L320MB	0.22	0.45	1.3	0.025	0.015	0.05	0.05	0.04	1)	0.41	320	500	430			21
	L360MB	0.22	0.45	1.4	0.025	0.015				1)	0.41	360	530	460			20
	L390MB	0.22	0.45	1.4	0.025	0.15				1)	0.41	390	545	490			20
	I-L415MB	0.12	0.45	1.6	0.025	0.015				1)2)3	0.42	415	565	520			18
	L450MB	0.12	0.45	1.6	0.025	0.015				1)2)3	0.43	450	600	535			18
	L485MB	0.12	0.45	1.7	0.025	0.015				1)2)3	0.43	485	635	570			18
	L555MB	0.12	0.45	1.85	0.025	0.015				1)2)3	Ukuxoxisana	555	705	625	825	0.95	18
	Qaphela:
	1）0.015 ≤ Altot ＜ 0.060;N ≤ 0.012；AI—N ≥ 2—1;Cu ≤ 0.25;Ni ≤ 0.30；Cr ≤ 0.30；Mo ≤ 0.10;
	2）V+Nb+Ti ≤ 0.015%
	3) Kuwo wonke amabanga ensimbi, i-Mo ingase ≤ 0.35%, ngaphansi kwenkontileka.
	4）CEV=C+ Mn/6 + (Cr+Mo+V)/5 + (Cu+Ni)/5

Esinye sezici ezibalulekile okufanele zicatshangelwe lapho i-arc welding amapayipi egesi yemvelo uhlobo lwenqubo yokushisela esetshenziswayo.NgobaKuvunguza ashiselwe tubes, indlela evame ukusetshenziswa kakhulu i-submerged arc welding (SAW) ubuchwepheshe.Lokhu kuhilela ukusebenzisa i-granular flux, ethelwa phezu kwendawo yokushisela ukuze kwakhiwe umoya ovikelayo ovimbela i-oxidation nokunye ukungcola ukuthi kuthinte i-weld.Lokhu kubangela ukushiselwa kwekhwalithi ephezulu, okufanayo okunamaphutha amancane.

Okunye okucatshangelwayo okubalulekile lapho i-arc welding amapayipi egesi yemvelo ukukhethwa kwempahla yokugcwalisa i-weld.Izinto zokugcwalisa zisetshenziselwa ukugcwalisa noma yiziphi izikhala noma okungahambi kahle ku-weld, okudala isibopho esiqinile futhi esingaguquki.Kumapayipi ashiselwe okuvunguza, kufanele kusetshenziswe into yokugcwalisa ehambisana nebanga elithile lensimbi elisetshenzisiwe kanye nezimo zemvelo lapho ipayipi livezwa khona.Lokhu kuqinisekisa ukuthi i-weld ingakwazi ukumelana nezingcindezi namazinga okushisa atholwa amapayipi egesi yemvelo.

Ngaphezu kwezici zobuchwepheshe ze-arc welding, kubalulekile futhi ukucabangela iziqu kanye nesipiliyoni somshiseli owenza umsebenzi.Ukushisela i-arc yamapayipi egesi yemvelo kudinga izinga eliphezulu lekhono nolwazi, kanye nokuqonda okuphelele kwezinselele eziyingqayizivele kanye nezidingo zomsebenzi.Kubalulekile ukusebenza nabashiseli abanolwazi nabanezitifiketi abakwazi ukukhiqiza amashisela ekhwalithi ephezulu ahlangabezana nezindinganiso eziqinile zomkhakha.

Sengiphetha, i-spiral welded tube arc eshiselwe ipayipi legesi yemvelo iyingxenye ebalulekile yemboni yamapayipi.Kudinga ukucatshangelwa ngokucophelela kwamasu okushisela, izinto zokugcwalisa, kanye neziqu zomshiseli owenza umsebenzi.Ngokuqinisekisa ukuthi lezi zici zithola ukunakwa okufanele, kuzokwazi ukudala amapayipi egesi yemvelo ahlangabezana nezidingo zemboni zokuphepha, ukwethembeka nokusebenza kwesikhathi eside.

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