Spiral Welded Tube Arc Welding Of Natural Gas Pipes

Nkọwa dị mkpirikpi:

Arc ịgbado ọkụ bụ oké egwu nzọụkwụ na n'ichepụta usoro nkegburugburu welded tubes, karịsịaeke gas ọkpọkọs.Ọ na-agụnye iji okpomọkụ dị elu na-emepụta njikọ siri ike, nke na-adịgide adịgide n'etiti ọkpọkọ, na-ahụ na arụmọrụ a pụrụ ịdabere na ya na ogologo oge.N'isiokwu a, anyị'ga-abanye n'ime mgbagwoju anya nke spiral welded arc welded eke gas anwụrụ na ihe kpatara ya'dị oké egwu akụrụngwa nke pipeline ụlọ ọrụ.

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Mkpado ngwaahịa

Makaeke gas ọkpọkọs, nchekwa na ntụkwasị obi bụ ihe kacha mkpa.Arc welding na-arụ ọrụ dị mkpa n'ịhụ na ọkpọkọ ndị a nwere ike iguzogide ọnọdụ ọjọọ ha na-eche ihu n'oge ndụ ha.Usoro ịgbado ọkụ arc gụnyere iji ọkụ eletrik na-ebute oke ọkụ nke na-agbaze n'ọnụ ọnụ ọkpọkọ ma jikọta ha ọnụ.

Ọkọlọtọ	ọkwa ígwè	Ngwakọta kemịkalụ									Njirimara tensile							Nnwale Mmetụta Charpy na Wetuo Ule anya mmiri
		C	Si	Mn	P	S	V	Nb	Ti		CEV4) (%)	Ike Mpa Rt0.5 Mpa		Ike Tensile Rm Mpa		Rt0.5/Mm	(L0=5.65 √ S0) Ogologo A%
		max	max	max	max	max	max	max	max	Ndị ọzọ	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	Nnwale mmetụta Charpy: A ga-anwale mmetụta nnabata ike nke ọkpọkọ na eriri weld dị ka achọrọ na ọkọlọtọ izizi.Maka nkọwa, lee ọkọlọtọ izizi.Wetuo ule akwa anya mmiri dị arọ: mpaghara ịkpacha ihe nhọrọ
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	Mkparịta ụka	555	705	625	825	0.95	18
	Mara:
	1)0.015 ≤ Altot
	2）V+Nb+Ti ≤ 0.015%
	3) Maka akara nchara niile, Mo nwere ike ≤ 0.35%, n'okpuru nkwekọrịta.
	4) CEV=C+ Mn/6 + (Cr+Mo+V)/5+ (Cu+Ni)/5

Otu n'ime isi ihe ndị a ga-atụle mgbe arc na-agbado ọkpọkọ gas bụ ụdị usoro ịgbado ọkụ a na-eji.Makagburugburu welded tubes, usoro a na-ejikarị eme ihe bụ teknụzụ ịgbado ọkụ n'okpuru mmiri (SAW).Nke a na-agụnye iji granular flux, nke a na-awụsa n'elu ebe ịgbado ọkụ iji mepụta ikuku nchebe nke na-egbochi oxidation na ihe ndị ọzọ na-emerụ emerụ na-emetụta weld.Nke a na-ebute weld dị elu nke nwere otu ntụpọ nwere obere ntụpọ.

Ihe ọzọ dị mkpa na-eche mgbe arc ịgbado ọkụ eke gas ọkpọkọ bụ nhọrọ nke weld filler ihe.A na-eji ihe na-ejuputa emejupụta oghere ọ bụla ma ọ bụ ihe na-adịghị mma na weld, na-emepụta njikọ siri ike na nke na-agbanwe agbanwe.Maka ọkpọkọ welded spiral, a ga-eji ihe na-ejuputa ihe na-adaba na ọkwa nchara a kapịrị ọnụ na ọnọdụ gburugburu ebe obibi nke a na-ekpughere pipeline.Nke a na-eme ka weld ahụ nwee ike iguzogide nrụgide na okpomọkụ nke ọkpọkọ gas na-enweta.

Na mgbakwunye na akụkụ teknụzụ nke ịgbado ọkụ arc, ọ dịkwa mkpa ịtụle iru eru na ahụmịhe nke welder na-arụ ọrụ ahụ.Arc ịgbado ọkụ nke eke gas ọkpọkọ na-achọ ọkwa dị elu nke nkà na nka, yana nghọta nke ọma banyere ihe ịma aka pụrụ iche na ihe a chọrọ n'ọrụ ahụ.Ọ dị oke mkpa ka gị na ndị welder nwere ahụmahụ na asambodo na-arụkọ ọrụ bụ ndị nwere ike na-emepụta welds dị elu mgbe niile na-ezute ụkpụrụ siri ike nke ụlọ ọrụ ahụ.

N'ikpeazụ, spiral welded tube arc welded eke gas pipe bụ isi ihe dị na ụlọ ọrụ ọkpọkọ.Ọ na-achọ iji nlezianya tụlee usoro ịgbado ọkụ, ihe ndochi, na iru eru nke welder na-arụ ọrụ ahụ.Site n'ịhụ na ihe ndị a na-enweta nlebara anya kwesịrị ekwesị, ọ ga-ekwe omume ịmepụta ọkpọkọ gas nke na-emezu ihe ndị ụlọ ọrụ chọrọ maka nchekwa, ntụkwasị obi na ịrụ ọrụ ogologo oge.

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