Spiral Welded Tube Arc Welding Of Natural Gas Pipes

Tlhaloso e Khutšoanyane:

Arc welding ke mohato oa bohlokoa ts'ebetsong ea tlhahiso easpiral welded tubes, haholopeipi ea khase ea tlhahos.E kenyelletsa ho sebelisa mocheso o phahameng ho theha maqhama a matla, a tšoarellang pakeng tsa liphaephe, ho netefatsa ts'ebetso e tšepahalang le e tšoarellang nako e telele.Sehloohong sena, re'Ke tla ikakhela ka har'a matsapa a spiral welded arc welded welded gas pipe le hore na hobaneng e'sa karolo ea bohlokoa ea indasteri ea lipeipi.

Re romelle lengolo-tsoibila

Lintlha tsa Sehlahisoa

Li-tag tsa Sehlahisoa

Bakeng sapeipi ea khase ea tlhahos, tšireletseho le botšepehi ke tsa bohlokoa.Arc welding e phetha karolo ea bohlokoa ho netefatsa hore liphaephe tsena li khona ho mamella maemo a thata ao li tobaneng le tsona nakong ea bophelo ba tsona ba tšebeletso.Mokhoa oa ho cheselletsa liphaephe o kenyelletsa ho sebelisa motlakase ho hlahisa mocheso o matla o qhibilihisang mathōko a liphaephe le ho li kopanya hammoho.

Standard	Kereiti ea tšepe	Sebopeho sa lik'hemik'hale									Thepa ea tensile							Teko ea Charpy Impact le Teko ea ho theola boima ba 'mele
		C	Si	Mn	P	S	V	Nb	Ti		CEV4) (%)	Rt0.5 Mpa Ho hlahisa matla		Rm Mpa Tensile Matla		Rt0.5/ Rm	(L0=5.65 √ S0 ）Elongation A%
		max	max	max	max	max	max	max	max	Tse ding	max	min	max	min	max	max	min
	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	Teko ea phello ea Charpy: Matla a ho monya matla a 'mele oa liphaephe le seam ea weld e tla lekoa joalo ka ha ho hlokahala maemong a mantlha.Bakeng sa lintlha, sheba maemo a mantlha.Teko ea ho theola boima ba 'mele: Sebaka sa boikhethelo sa ho kuta
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
	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	Puisano	555	705	625	825	0.95	18
	Hlokomela:
	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) Bakeng sa limaraka tsohle tsa tšepe, Mo e ka ≤ 0.35%, tlas'a konteraka.
	4）CEV=C+ Mn/6 + (Cr+Mo+V)/5 + (Cu+Ni)/5

E 'ngoe ea lintlha tsa bohlokoa tse lokelang ho nahanoa ha lipeipi tsa khase ea tlhaho li tjheseletsa ke mofuta oa mokhoa oa ho tjheseletsa o sebelisoang.Bakeng saspiral welded tubes, mokhoa o sebelisoang ka ho fetisisa ke theknoloji ea submerged arc welding (SAW).Sena se kenyelletsa ho sebelisa granular flux, e tšeloang holim'a sebaka sa welding ho theha moea o sireletsang o thibelang oxidation le litšila tse ling hore li se ke tsa ama chesele.Sena se fella ka tjheseletsa ya boleng bo phahameng, e tshwanang le e nang le mefokolo e fokolang.

Ntho e 'ngoe ea bohlokoa eo ho nahanoang ka eona ha arc welding liphaephe tsa khase ea tlhaho ke khetho ea lisebelisoa tsa weld filler.Lisebelisoa tsa ho tlatsa li sebelisetsoa ho tlatsa likheo leha e le life kapa ho se tloaelehe ho weld, ho theha maqhama a matla le a tsitsitseng.Bakeng sa lipeipi tse cheselitsoeng ka spiral, ho tlameha ho sebelisoa thepa ea ho tlatsa e lumellanang le boemo bo khethehileng ba tšepe bo sebelisitsoeng le maemo a tikoloho ao phala e pepesetsoang ho ona.Sena se tiisa hore weld e khona ho mamella likhatello le mocheso o fumanoang ke lipeipi tsa khase ea tlhaho.

Ntle le likarolo tsa tekheniki tsa welding ea arc, ho bohlokoa hape ho nahana ka litšoaneleho le boiphihlelo ba welder ea etsang mosebetsi.Arc tjheseletsa ea liphaephe tsa khase ea tlhaho e hloka boemo bo phahameng ba tsebo le botsebi, hammoho le kutloisiso e phethahetseng ea mathata le litlhoko tse ikhethang tsa mosebetsi.Ho bohlokoa ho sebetsa le li-welders tse nang le boiphihlelo le tse netefalitsoeng tse ka lulang li hlahisa li-welds tsa boleng bo holimo tse fihlelang maemo a thata a indasteri.

Qetellong, spiral welded tube arc welded pipe ea khase ea tlhaho ke karolo ea bohlokoa indastering ea lipeipi.E hloka ho shebisisa ka hloko mekhoa ea ho cheselletsa, lisebelisoa tsa ho tlatsa, le litšoaneleho tsa motho ea etsang mosebetsi oo.Ka ho etsa bonnete ba hore lintlha tsena li fumana tlhokomelo e lokelang, ho tla khonahala ho etsa lipeipi tsa khase ea tlhaho tse finyellang litlhoko tsa indasteri bakeng sa polokeho, botšepehi le ts'ebetso ea nako e telele.

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