Spiral Welded Tube Arc welding of Natural Gas Paipu

ʻO ka wehewehe pōkole:

Arc welding mea he koʻikoʻi kaʻina i ka manufacturing kaʻina opaipu wiliwili spirals, oi loa akupaipu kinoea maolis.Hoʻohana ia i ka hoʻohana ʻana i nā wela kiʻekiʻe e hana i kahi paʻa paʻa paʻa paʻa ma waena o nā paipu, e hōʻoiaʻiʻo ana i ka hana pono a lōʻihi.Ma kēia ʻatikala, mākou'E luʻu i loko o ka paʻakikī o spiral welded arc welded natural gas paipu a me ke kumu'he mea koʻikoʻi o ka ʻoihana paipu.

E hoʻouna i ka leka uila iā mākou

Huahana Huahana

No ka meapaipu kinoea maolis, ka palekana a me ka hilinaʻi nui.He mea koʻikoʻi ko Arc welding i ka hōʻoia ʻana e hiki i kēia mau paipu ke kū i nā kūlana paʻakikī a lākou e kū nei i ko lākou ola lawelawe.ʻO ke kaʻina hana hoʻoheheʻe arc e pili ana i ka hoʻohana ʻana i ka uila e hana i ka wela nui e hoʻoheheʻe i nā kihi o nā paipu a hui pū.

Kūlana	Papa kila	haku mele									Nā waiwai tensile							ʻO ka hoʻāʻo ʻana o Charpy Impact a me Drop Weight Tear Test
		C	Si	Mn	P	S	V	Nb	Ti		CEV4)（%)	Rt0.5 Mpa Hua ikaika		Rm Mpa Ikaika Tensile		Rt0.5/ Rm	（L0=5.65 √ S0 ）Hooloihi A%
		max	max	max	max	max	max	max	max	'ē aʻe	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	ʻO ka hoʻāʻo ʻana i ka hopena Charpy: E hoʻāʻo ʻia ka hopena o ka ikehu o ke kino paipu a me ka weld seam e like me ka mea i koi ʻia ma ke kūlana kumu.No nā kikoʻī, e ʻike i ke kūlana kumu.Hoʻāʻo waimaka kaumaha kaumaha: Wahi ʻāhi koho
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	Kūkākūkā	555	705	625	825	0.95	18
	Nānā:
	1）0.015 ≤ Altot ＜ 0.060；N ≤ 0.012；AI—N ≥ 2—1；Cu ≤ 0.25；Ni ≤ 0.30；Cr ≤ 0.30；Cr ≤ 0.30；
	2）V+Nb+Ti ≤ 0.015%
	3）No nā māka kila a pau, hiki iā Mo ≤ 0.35%, ma lalo o kahi ʻaelike.
	4）CEV=C+ Mn/6 + (Cr+Mo+V)/5 + (Cu+Ni)/5

ʻO kekahi o nā mea nui e noʻonoʻo ai i ka wā e wiliwili ai i nā paipu kinoea maoli ke ʻano o ka ʻenehana welding i hoʻohana ʻia.No ka meapaipu wiliwili spirals, ʻo ke ʻano maʻamau i hoʻohana ʻia ʻo ia ka ʻenehana submerged arc welding (SAW).Hoʻopili kēia i ka hoʻohana ʻana i ka flux granular, i ninini ʻia ma luna o ka wahi wili e hana i kahi ea pale e pale ai i ka oxidation a me nā mea haumia ʻē aʻe mai ka hoʻopili ʻana i ka weld.ʻO kēia ka hopena i kahi kiʻekiʻe kiʻekiʻe, ʻaʻahu like me nā hemahema liʻiliʻi.

ʻO kekahi mea nui e noʻonoʻo ai i ka wā e wiliwili ai i nā paipu kinoea kūlohelohe ke koho ʻana i nā mea hoʻopiha weld.Hoʻohana ʻia ka mea hoʻopihapiha e hoʻopiha i nā āpau a i ʻole nā mea ʻole i ka weld, e hana ana i kahi paʻa paʻa a paʻa.No nā paipu wiliwili spiral, pono e hoʻohana ʻia kahi mea hoʻopiha i kūpono me ka pae kila kikoʻī i hoʻohana ʻia a me nā kūlana kūlohelohe kahi e hōʻike ʻia ai ka pipeline.ʻO kēia ka mea e hiki ai i ka weld ke pale i nā pilikia a me nā mahana i ʻike ʻia e nā paipu kinoea maoli.

Ma waho aʻe o nā ʻano ʻenehana o ka welding arc, he mea nui nō hoʻi e noʻonoʻo i nā pono a me ka ʻike o ka welder e hana ana i ka hana.ʻO ka wiliwili ʻana o nā paipu kinoea maoli e pono ai ka pae kiʻekiʻe o ke akamai a me ka ʻike, a me ka ʻike piha i nā pilikia kūʻokoʻa a me nā koi o ka hana.He mea koʻikoʻi ka hana pū ʻana me nā welder ʻike a hōʻoia i hiki ke hana mau i nā welds kiʻekiʻe i kūpono i nā kūlana koʻikoʻi o ka ʻoihana.

I ka hopena, ʻo ka spiral welded tube arc welded natural gas pipe he mea nui o ka ʻoihana pipeline.Pono e noʻonoʻo pono i nā ʻenehana welding, nā mea hoʻopihapiha, a me nā pono o ka welder e hana ana i ka hana.Ma ka hōʻoia ʻana i ka loaʻa ʻana o kēia mau mea i ka manaʻo e pono ai lākou, hiki ke hana i nā paipu kinoea kūlohelohe i kūpono i nā koi o ka ʻoihana no ka palekana, hilinaʻi a me ka hana lōʻihi.

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