Mapombi eSpiral Arc Welded Pipe mu API 5L Line Pipe Applications

Mapombi Akasungirirwa Arc Akanyudzwa Mu API 5L Line Pipe Applications Mufananidzo Unoratidza

Tsananguro pfupi:

Muchikamu chekufambisa mafuta negasi, kushandiswa kwemapombi esimbi akafukidzwa nesimbi ari kuwedzera kuwanda, kunyanya mukuvaka masisitimu emapombi esimbi eAPI 5L. Pombi yeSSAW (yakanyudzwa nesimbi arc welded) inozivikanwa nekusimba kwayo kwakanyanya, kugara kwenguva refu uye kuchinjika, zvichiita kuti ive yakakodzera kushandiswa kwakasimba senge indasitiri yemafuta negasi.

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Ruzivo rweChigadzirwa

Matagi eChigadzirwa

IyoAPI 5L mutsetse wepombiStandard iyi ndiyo nhungamiro yakagadzirwa neAmerican Petroleum Institute (API) yekufambisa gasi rechisikigo, mafuta nemvura. Inotsanangura zvinodiwa pakugadzira mapaipi esimbi akasungirirwa uye inoratidza nhungamiro dzakasimba dzemhando, simba uye mashandiro emapaipi aya.

Zvivakwa zveMechanical

giredhi resimbi	simba shoma regoho Mpa		Simba rekusimba		Kureba kushoma %	Simba shoma remagetsi J
giredhi resimbi	Ukobvu hwakatarwa mm		Ukobvu hwakatarwa mm		Ukobvu hwakatarwa mm	patembiricha yekuyedzwa kwe
	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	-	-

Pombi yeSSAWinogadzirwa uchishandisa nzira yekuwelda yesimbi iri pasi pevhu inosanganisira kugadzira simbi yakaita denderedzwa wobva washandisa simbi yewelding kubatanidza mipendero yesimbi iyi pamwe chete.

Chimwe chezvakanakira zvikuru zvekushandisa pombi dzakasungirirwa dzakaita sespiral submerged arc mu API 5L line pombi ndiko kugona kwadzo kutsungirira kumanikidzwa kwakanyanya kwemukati nekunze. Izvi zvakakosha zvikuru muindasitiri yemafuta negesi, uko mapaipi anosangana nemamiriro ezvinhu akaoma uye mitoro inorema. Kuvakwa kwakasimba kwemapaipi eSSAW kunoita kuti ive yakanaka kumapaipi anoshanda pakupisa kwakanyanya, zvichipa mhinduro yakavimbika uye inogara kwenguva refu yekufambisa zviwanikwa zvinokosha.

Pamusoro pezvo, kuchinjika kwepombi yesimbi yakanyungudutswa yesimbi inotenderera inoita kuti ive nyore kuisa nekugadzirisa, zvichiita kuti ive sarudzo inodhura zvishoma pamapurojekiti ekuvaka mapaipi. Kugona kwavo kuchinjika uye kuenderana nechimiro chenzvimbo kunobvisa kudiwa kwekugadzirwa kwekugadzirisa kunodhura uye kunotora nguva uye kunoderedza njodzi yekudonha kwemvura nekukundikana. Pamusoro pezvo, nzvimbo yakatsetseka yemukati memapaipi eSSAW inoderedza kukweshana nekuvhiringika, zvichikonzera kuyerera kwakanaka uye kushandiswa kwesimba kwakaderera.

Kuumbwa kweMakemikari

Giredhi resimbi		Rudzi rwekubvisa oxidation a	% nehuremu, huwandu hwepamusoro
Zita resimbi	Nhamba yesimbi	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. Nzira yekubvisa oxidation inotsanangurwa seinotevera: FF: Simbi yakafa zvizere ine zvinhu zvinosunga nitrogen muhuwandu hwakakwana kuti isunge nitrogen iripo (semuenzaniso 0,020% yeAl yose kana 0,015% yeAl inonyungudika). b. Kukosha kwakanyanya kwenitrogen hakushandi kana makemikari ari muchikamu ichi achiratidza huwandu hweAl hushoma hwe0,020% nechiyero cheAl/N che2:1, kana kana paine zvimwe zvinhu zveN-binding zvakakwana. Zvinhu zveN-binding zvinofanira kunyorwa muGwaro reKuongorora.

Muchidimbu, kushandiswa kwepombi dzakasungirirwa dzakaita sespiral submerged arc welded mu API 5L line pipe applications kunopa zvakawanda zvakanakira zvinoita kuti ive sarudzo inokwezva indasitiri yemafuta negesi. Simba radzo, kugara kwenguva refu uye kuchinjika kunoita kuti dzive dzakakodzera kushandiswa munzvimbo dzinoda mari yakawanda, nepo nyore kudziisa uye zvinodiwa zvishoma zvekugadzirisa zvinopa mhinduro inodhura pamapurojekiti ekuvaka mapaipi. Sezvo kudiwa kwekutakura mafuta, gasi rechisikigo nemvura kwakavimbika uye kwakanaka kuri kuramba kuchikura, kukosha kwepombi dzakasungirirwa dzakaita sespiral submerged arc welded mu API 5L line pipe standard hakugone kupfuudzwa zvakanyanya. Nekushanda kwadzo kwakaratidzwa uye kushandiswa kwadzo kwakasiyana-siyana,pombi yesimbi yakanyudzwa mumvurayakarongerwa kuramba iri chikamu chakakosha chezvivakwa zvinotungamira hupfumi hwenyika.