Spiral Welded Tube Arc Welding Of Natural Gas Pipes

Spiral Welded Tube Arc Welding Of Natural Gasi Pipes Featured Image

Tsanangudzo Pfupi:

Arc welding inhanho yakakosha mukugadzirwa kwespiral welded chubhus, kunyanyapombi yegasi chaiyos.Zvinosanganisira kushandisa tembiricha yakakwira kuumba chisungo chakasimba, chakasimba pakati pemapombi, kuve nechokwadi chekuita kwakavimbika uye kwenguva refu.Munyaya ino, isu'ndichanyura mukuoma kunzwisisa kwe spiral welded arc welded natural gas pombi uye nei zvichidaro'sa chikamu chakakosha cheindastiri yepombi.

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Forpombi yegasi chaiyos, kuchengeteka uye kuvimbika zvakakosha.Arc welding inoita basa rakakosha mukuona kuti mapombi aya anokwanisa kumira nemamiriro ezvinhu akaomarara avanosangana nawo mukati mehupenyu hwavo hwesevhisi.Iyo arc welding process inosanganisira kushandisa magetsi kugadzira kupisa kwakanyanya kunonyungudutsa mipendero yemapombi uye kuabatanidza pamwechete.

Standard	Simbi giredhi	Kemikari yakagadzirwa									Tensile properties							Charpy Impact Muedzo uye Drop Weight Tear Test
		C	Si	Mn	P	S	V	Nb	Ti		CEV4) (%)	Rt0.5 Mpa Goho simba		Rm Mpa Tensile Simba		Rt0.5/ Rm	（L0=5.65 √ S0 ）Elongation A%
		max	max	max	max	max	max	max	max	Zvimwe	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	Charpy impact bvunzo: Impact inotora simba repombi muviri uye weld musono uchayedzwa sezvinodiwa muyero yekutanga.Kuti uwane rumwe ruzivo, ona yekutanga mwero.Drop weight tear test: Optional shearing area
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	Kukurukurirana	555	705	625	825	0.95	18
	Cherechedza:
	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) Kune ese magiredhi esimbi, Mo anogona ≤ 0.35%, pasi pechibvumirano.
	4）CEV=C+ Mn/6 + (Cr+Mo+V)/5 + (Cu+Ni)/5

Chimwe chezvinhu zvakakosha zvekufunga nezvazvo kana arc welding magasi egasi pombi imhando yemhando yewelding inoshandiswa.Forspiral welded chubhus, iyo inonyanya kushandiswa nzira ndeye submerged arc welding (SAW) teknolojia.Izvi zvinosanganisira kushandisa granular flux, iyo inodururwa pamusoro penzvimbo yewelding kugadzira mhepo inodzivirira inodzivirira oxidation uye zvimwe zvinosvibisa kubva pakukanganisa weld.Izvi zvinoguma nemhando yepamusoro, yunifomu weld ine hurema hudiki.

Imwe pfungwa yakakosha kana arc welding magasi egasi pombi kusarudzwa kwe weld filler zvinhu.Filler zvinhu zvinoshandiswa kuzadza chero mapundu kana zvisizvo mu weld, kugadzira chisungo chakasimba uye chinowirirana.Kune spiral welded pombi, chinhu chekuzadza chinofanirwa kushandiswa chinoenderana negiredhi resimbi rinoshandiswa uye nemamiriro ekunze ayo pombi inoburitswa.Izvi zvinovimbisa kuti weld inogona kumira kumanikidza uye tembiricha inowanikwa nemapombi egasi chaiwo.

Pamusoro peiyo tekinoroji yearc welding, zvakakoshawo kuti titarise zvikwaniriso uye ruzivo rweanopisa ari kuita basa.Arc welding yemapombi egasi echisikigo inoda hunyanzvi hwepamusoro uye hunyanzvi, pamwe nekunyatsonzwisisa matambudziko akasiyana uye zvinodikanwa zvebasa racho.Izvo zvakakosha kuti ushande nevane ruzivo uye vane certified welders avo vanogona kugara vachigadzira emhando yepamusoro welds inosangana neyakaomesesa zviyero zveindasitiri.

Mukupedzisa, spiral welded tube arc welded yegasi pombi chinhu chakakosha cheindasitiri yepombi.Zvinoda kunyatsotariswa kwematekinoroji emagetsi, zvigadziriso zvekuzadza, uye zvikwaniriso zveanopisa ari kuita basa.Nekuita kuti zvinhu izvi zvigamuchire kutariswa kwazvinofanirwa, zvinogoneka kugadzira mapaipi egasi echisikigo anosangana nezvinodiwa zveindasitiri zvekuchengetedza, kuvimbika uye kushanda kwenguva refu.

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