Spiral Submerged Arc Welded Pipe Mu API 5L Line Pipe Applications

Kufotokozera Kwachidule:

M'gawo loyendetsa mafuta ndi gasi, kugwiritsa ntchito mapaipi ozungulira ozungulira arc akuchulukirachulukira, makamaka pakumanga kachitidwe ka mapaipi amtundu wa API 5L.SSAW (submerged arc welded) chitoliro chimadziwika chifukwa cha mphamvu zake zazikulu, zolimba komanso zosinthika, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsa ntchito movutikira monga mafakitale amafuta ndi gasi.

Titumizireni imelo

Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

TheAPI 5L mzere chitoliromuyezo ndi mfundo yopangidwa ndi American Petroleum Institute (API) yoyendetsera gasi, mafuta ndi madzi.Imafotokoza zofunikira zopangira mapaipi azitsulo zowotcherera ndikuyika malangizo okhwima amtundu, mphamvu ndi magwiridwe antchito a mapaipi awa.

Mechanical Property

kalasi yachitsulo	mphamvu zochepa zokolola Mpa		Kulimba kwamakokedwe		Kutalikira pang'ono %	Mphamvu zochepa zomwe zimakhudzidwa J
kalasi yachitsulo	Makulidwe odziwika mm		Makulidwe odziwika mm		Makulidwe odziwika mm	pa kutentha kwa mayeso a
	＜16	＞16≤40	＜3	≥3≤40	≤40	-20 ℃	0 ℃	20 ℃
Chithunzi cha S235JRH	235	225	360-510	360-510	24	-	-	27
Chithunzi cha S275J0H	275	265	430-580	410-560	20	-	27	-
Chithunzi cha S275J2H	275	265	430-580	410-560	20	27	-	-
Chithunzi cha S355J0H	365	345	510-680	470-630	20	-	27	-
Chithunzi cha S355J2H						27	-	-
Chithunzi cha S355K2H						40	-	-

Mtengo wa SSAWamapangidwa pogwiritsa ntchito njira yowotcherera ya arc yomwe ili pansi pamadzi yomwe imaphatikizapo kupanga koyilo yachitsulo kukhala mawonekedwe ozungulira kenaka kugwiritsa ntchito nsonga yowotcherera kuti agwirizane m'mbali mwa koyiloyo.

Ubwino wina waukulu wogwiritsa ntchito chitoliro cha spiral submerged arc welded mu API 5L mzere wa chitoliro ndi kuthekera kwawo kupirira kupanikizika kwakukulu kwamkati ndi kunja.Izi ndizofunikira makamaka m'makampani amafuta ndi gasi, pomwe mapaipi amakumana ndi zovuta komanso katundu wolemetsa.Kumanga kolimba kwa mapaipi a SSAW kumapangitsa kuti mapaipi azigwira ntchito pazovuta kwambiri komanso kutentha, kupereka njira yodalirika komanso yodalirika yoyendetsera katundu wamtengo wapatali.

Kuphatikiza apo, kusinthasintha kwa spiral submerged arc welded chitoliro kumapangitsa kuti ikhale yosavuta kuyiyika ndikuyikonza, ndikupangitsa kuti ikhale chisankho chotsika mtengo pantchito yomanga mapaipi.Kukhoza kwawo kusinthasintha ndikugwirizana ndi mawonekedwe achilengedwe a malowa kumathetsa kufunika kwa kupanga zodula komanso zowononga nthawi komanso kumachepetsa chiopsezo cha kutayikira ndi kulephera.Kuonjezera apo, mkati mwa mkati mwa mapaipi a SSAW amachepetsa kukangana ndi chipwirikiti, zomwe zimapangitsa kuti kuyenda bwino komanso kuchepetsa mphamvu zogwiritsira ntchito mphamvu.

Chemical Composition

Chitsulo kalasi		Mtundu wa de-oxidation a	% ndi misa, pazipita
Dzina lachitsulo	Nambala yachitsulo	C	C	Si	Mn	P	S	Nb
Chithunzi cha S235JRH	1.0039	FF	0,17	-	1,40	0,040	0,040	0.009
Chithunzi cha S275J0H	1.0149	FF	0,20	-	1,50	0,035	0,035	0,009
Chithunzi cha S275J2H	1.0138	FF	0,20	-	1,50	0,030	0,030	-
Chithunzi cha S355J0H	1.0547	FF	0,22	0,55	1,60	0,035	0,035	0,009
Chithunzi cha S355J2H	1.0576	FF	0,22	0,55	1,60	0,030	0,030	-
Chithunzi cha S355K2H	1.0512	FF	0,22	0,55	1,60	0,030	0,030	-
a.Njira ya deoxidation imayikidwa motere: FF: Chitsulo chopha kwathunthu chokhala ndi zinthu zomangira za nayitrogeni mu kuchuluka kokwanira kumanga nayitrogeni yomwe ilipo (mwachitsanzo min. 0,020 % okwana Al kapena 0,015 % sungunuka Al). b.Kuchuluka kwa nayitrogeni sikugwira ntchito ngati mankhwala akuwonetsa kuchuluka kwa Al zomwe zili 0,020 % ndi chiŵerengero chochepa cha Al/N cha 2:1, kapena ngati zinthu zina zokwanira za N-binding zilipo.Zinthu zomangiriza za N zidzalembedwa mu Inspection Document.

Mwachidule, kugwiritsa ntchito chitoliro cha spiral submerged arc welded mu API 5L line pipe applications kumapereka ubwino wambiri womwe umapangitsa kuti ikhale yosangalatsa kwa makampani amafuta ndi gasi.Mphamvu zawo, kulimba kwawo komanso kusinthasintha zimawapangitsa kukhala abwino kuti agwiritsidwe ntchito m'malo ovuta, pomwe kumasuka kwawo kuyika komanso kuwongolera kocheperako kumapereka njira yotsika mtengo yopangira ntchito zomanga mapaipi.Pamene kufunikira kodalirika, kuyendetsa bwino kwa mafuta, gasi ndi madzi kukukulirakulirabe, kufunikira kwa chitoliro cha spiral submerged arc welded mu API 5L mzere wa chitoliro sikungapitirire.Ndi magwiridwe ake otsimikiziridwa komanso kusinthasintha,chitoliro cha arc chozungulirayakhazikitsidwa kuti ipitilize kukhala chigawo chofunikira kwambiri cha zomangamanga zomwe zimayendetsa chuma padziko lonse lapansi.