Chitoliro Chozungulira Choviikidwa mu Arc Welded mu API 5L Line Pipe Applications

Kufotokozera Kwachidule:

Mu gawo loyendetsa mafuta ndi gasi, kugwiritsa ntchito mapaipi ozungulira ozungulira arc welded kukuchulukirachulukira, makamaka popanga mapaipi a API 5L line. Chitoliro cha SSAW (chomwe chimalowa pansi pa arc welded) chimadziwika ndi mphamvu zake zapamwamba, kulimba komanso kusinthasintha kwake, zomwe zimapangitsa kuti chikhale choyenera kugwiritsidwa ntchito molimbika monga makampani amafuta ndi gasi.

Tumizani imelo kwa ife

Tsatanetsatane wa Zamalonda

Ma tag a Zamalonda

TheChitoliro cha mzere wa API 5Lmuyezo ndi mfundo yopangidwa ndi American Petroleum Institute (API) yoyendetsera gasi wachilengedwe, mafuta ndi madzi. Imafotokoza zofunikira pakupanga mapaipi achitsulo olumikizidwa ndipo imafotokoza malangizo okhwima okhudza ubwino, mphamvu ndi magwiridwe antchito a mapaipi awa.

Katundu wa Makina

kalasi yachitsulo	mphamvu yocheperako yopezera phindu Mpa		Kulimba kwamakokedwe		Kutalikirana kochepa %	Mphamvu yochepa kwambiri J
kalasi yachitsulo	Kunenepa kotchulidwa mm		Kunenepa kotchulidwa mm		Kunenepa kotchulidwa mm	kutentha koyesedwa kwa
	16	＞16≤40	＜3	≥3≤40	≤40	-20℃	0℃	20℃
S235JRH	235	225	360-510	360-510	24	-	-	27
S275J0H	275	265	430-580	410-560	20	-	27	-
S275J2H	275	265	430-580	410-560	20	27	-	-
S355J0H	365	345	510-680	470-630	20	-	27	-
S355J2H						27	-	-
S355K2H						40	-	-

Chitoliro cha SSAWAmapangidwa pogwiritsa ntchito njira yolumikizira arc yomwe imaphatikiza kupanga coil yachitsulo kukhala mawonekedwe ozungulira kenako kugwiritsa ntchito arc yolumikizira kuti iphatikize m'mbali mwa coil pamodzi.

Chimodzi mwa ubwino waukulu wogwiritsa ntchito chitoliro cholumikizidwa ndi arc chozungulira mu API 5L line payipi ndi kuthekera kwawo kupirira kupsinjika kwakukulu kwamkati ndi kunja. Izi ndizofunikira kwambiri mumakampani opanga mafuta ndi gasi, komwe mapaipi amakhala ndi zovuta kwambiri komanso katundu wolemera. Kapangidwe kamphamvu ka mapaipi a SSAW kumapangitsa kuti ikhale yabwino kwambiri pamapaipi omwe amagwira ntchito pa kutentha kwambiri, zomwe zimapangitsa kuti pakhale njira yodalirika komanso yokhalitsa yotumizira zinthu zofunika.

Kuphatikiza apo, kusinthasintha kwa chitoliro cholumikizidwa ndi arc chozungulira pansi pamadzi kumapangitsa kuti chikhale chosavuta kuyika ndi kusamalira, zomwe zimapangitsa kuti chikhale chisankho chotsika mtengo pa ntchito zomanga mapaipi. Kutha kwawo kusinthasintha ndikugwirizana ndi mawonekedwe achilengedwe a malo kumachotsa kufunikira kwa kupanga zomangira zodula komanso zotenga nthawi yayitali komanso kumachepetsa chiopsezo cha kutuluka ndi kulephera. Kuphatikiza apo, pamwamba pake posalala pa mapaipi a SSAW kumachepetsa kukangana ndi kugwedezeka, zomwe zimapangitsa kuti kuyenda bwino komanso kugwiritsa ntchito mphamvu zochepa.

Kapangidwe ka Mankhwala

Kalasi yachitsulo		Mtundu wa de-oxidation a	% ndi kulemera, kuchuluka kwakukulu
Dzina lachitsulo	Nambala yachitsulo	C	C	Si	Mn	P	S	Nb
S235JRH	1.0039	FF	0,17	—	1,40	0,040	0,040	0.009
S275J0H	1.0149	FF	0,20	—	1,50	0,035	0,035	0,009
S275J2H	1.0138	FF	0,20	—	1,50	0,030	0,030	—
S355J0H	1.0547	FF	0,22	0,55	1,60	0,035	0,035	0,009
S355J2H	1.0576	FF	0,22	0,55	1,60	0,030	0,030	—
S355K2H	1.0512	FF	0,22	0,55	1,60	0,030	0,030	—
a. Njira yochotsera poizoni m'thupi imatchulidwa motere: FF: Chitsulo chophwanyika bwino chokhala ndi zinthu zomangira nayitrogeni mu kuchuluka kokwanira kumangirira nayitrogeni yomwe ilipo (monga osachepera 0,020% ya Al yonse kapena 0,015% ya Al yosungunuka). b. Mtengo wapamwamba kwambiri wa nayitrogeni sugwira ntchito ngati mankhwala akuwonetsa kuchuluka kwa Al komwe kuli 0,020% ndi chiŵerengero chochepa cha Al/N cha 2:1, kapena ngati pali zinthu zina zokwanira zomangira N. Zinthu zomangira N ziyenera kulembedwa mu Chikalata Chowunikira.

Mwachidule, kugwiritsa ntchito chitoliro cholumikizidwa ndi arc chozungulira mu API 5L line pipe applications kumapereka zabwino zambiri zomwe zimapangitsa kuti chikhale chokongola kwa makampani amafuta ndi gasi. Mphamvu zawo, kulimba kwawo, komanso kusinthasintha kwawo zimapangitsa kuti zikhale zoyenera kugwiritsidwa ntchito m'malo ovuta, pomwe kusavuta kwawo kukhazikitsa komanso zosowa zochepa zosamalira zimapereka yankho lotsika mtengo pamapulojekiti omanga mapaipi. Pamene kufunikira kwa mayendedwe odalirika komanso ogwira mtima a mafuta, gasi wachilengedwe ndi madzi kukupitilira kukula, kufunika kwa chitoliro cholumikizidwa ndi arc chozungulira mu API 5L line pipe standard sikungatchulidwe mopitirira muyeso. Ndi magwiridwe antchito ake otsimikizika komanso kusinthasintha kwake,chitoliro chozungulira chozunguliraikuyembekezeka kupitiliza kukhala gawo lofunikira kwambiri pa zomangamanga zomwe zimayendetsa chuma cha dziko lonse.