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

Incazelo emfushane:

Emkhakheni wokuthuthwa kukawoyela negesi, ukusetshenziswa kwamapayipi ashiselwe i-arc angaphansi kwamanzi kuya ngokuya kuvame kakhulu, ikakhulukazi ekwakhiweni kwamapayipi kalayini we-API 5L.Ipayipi le-SSAW (i-arc elishiselwe ngaphansi kwamanzi) laziwa ngamandla alo aphezulu, ukuqina kanye nokuguquguquka, okulenza libe lilungele ukusetshenziswa okufunwa kakhulu njengemboni kawoyela negesi.

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

IIpayipi lomugqa we-API 5Lokujwayelekile kuwukucaciswa okuthuthukiswe yi-American Petroleum Institute (API) yokuthutha igesi yemvelo, uwoyela namanzi.Iveza izidingo zokukhiqiza amapayipi ensimbi ashiselwe futhi ibeka iziqondiso eziqinile zekhwalithi, amandla kanye nokusebenza kwalawa mapayipi.

Impahla Mechanical

izinga lensimbi	amandla amancane esivuno Mpa		Amandla aqinile		Ubude obuncane %	Amandla omthelela amancane J
izinga lensimbi	Ugqinsi olucacisiwe mm		Ugqinsi olucacisiwe mm		Ugqinsi olucacisiwe mm	at test lokushisa
	＜16	＞16≤40	＜3	≥3≤40	≤40	-20 ℃	0℃	20℃
I-S235JRH	235	225	360-510	360-510	24	-	-	27
I-S275J0H	275	265	430-580	410-560	20	-	27	-
I-S275J2H	275	265	430-580	410-560	20	27	-	-
I-S355J0H	365	345	510-680	470-630	20	-	27	-
I-S355J2H						27	-	-
I-S355K2H						40	-	-

Ipayipi le-SSAWikhiqizwa kusetshenziswa inqubo ye-arc welding engaphansi kwamanzi ehlanganisa ukwenza ikhoyili yensimbi ibe yindilinga bese kusetshenziswa i-arc yokushisela ukuze ihlanganise imiphetho yekhoyili ndawonye.

Enye yezinzuzo eziyinhloko zokusebenzisa ipayipi elishiselwe i-arc elijikijelwe nge-arc ku-API 5L izinhlelo zamapayipi olayini amandla abo okumelana namazinga aphezulu okucindezela kwangaphakathi nangaphandle.Lokhu kubaluleke kakhulu embonini kawoyela negesi, lapho amapayipi evezwa ezimweni ezimbi kakhulu kanye nemithwalo esindayo.Ukwakhiwa okuqinile kwamapayipi e-SSAW kwenza kube kuhle kumapayipi asebenza ngaphansi kwezingcindezi eziphezulu namazinga okushisa, okuhlinzeka ngesixazululo esinokwethenjelwa nesihlala isikhathi eside sokuthutha izinsiza ezibalulekile.

Ngaphezu kwalokho, ukuguquguquka kwepayipi elishiselwe i-arc elingaphansi kwe-spiral lenza kube lula ukulifaka nokuyinakekela, okulenza libe ukukhetha okungabizi kakhulu kumaphrojekthi wokwakha amapayipi.Ikhono lazo lokuguquguquka futhi livumelane nokuma kwemvelo kwendawo liqeda isidingo sokukhiqiza izinto ngokwezifiso ezimba eqolo futhi ezidla isikhathi futhi kunciphisa ingozi yokuvuza nokwehluleka.Ukwengeza, indawo engaphakathi ebushelelezi yamapayipi e-SSAW inciphisa ukungqubuzana nesiyaluyalu, okuholela ekugelezeni okuphumelelayo nokusetshenziswa kwamandla okuphansi.

Ukwakheka Kwamakhemikhali

Ibanga lensimbi		Uhlobo lwe-de-oxidation a	% ngesisindo, esiphezulu
Igama lensimbi	Inombolo yensimbi	C	C	Si	Mn	P	S	Nb
I-S235JRH	1.0039	FF	0,17	-	1,40	0,040	0,040	0.009
I-S275J0H	1.0149	FF	0,20	-	1,50	0,035	0,035	0,009
I-S275J2H	1.0138	FF	0,20	-	1,50	0,030	0,030	-
I-S355J0H	1.0547	FF	0,22	0,55	1,60	0,035	0,035	0,009
I-S355J2H	1.0576	FF	0,22	0,55	1,60	0,030	0,030	-
I-S355K2H	1.0512	FF	0,22	0,55	1,60	0,030	0,030	-
a.Indlela ye-deoxidation ikhethwe kanje: FF: Insimbi ebulawe ngokuphelele equkethe izakhi zokubopha i-nitrogen ngamanani anele ukuhlanganisa i-nitrogen etholakalayo (isb. min. 0,020 % isiyonke i-Al noma i-0,015 % e-soluble Al). b.Inani eliphakeme kakhulu le-nitrogen alisebenzi uma ukwakheka kwamakhemikhali kubonisa inani elincane eliphelele lokuqukethwe kwe-Al elingu-0,020 % elinesilinganiso esincane se-Al/N esingu-2:1, noma uma kukhona ezinye izakhi ezanele zokubopha i-N.Izinto ezibophezela i-N zizorekhodwa kuMqulu Wokuhlola.

Ngamafuphi, ukusetshenziswa kwepayipi elishiselwe i-arc elingaphansi kwe-spiral ku-API 5L yepayipi lepayipi linikeza uchungechunge lwezinzuzo ezikwenza kube inketho ekhangayo embonini kawoyela negesi.Amandla azo, ukuqina nokuguquguquka kwazo kuzenza zilungele ukusetshenziswa ezindaweni ezidinga kakhulu, kuyilapho ukulula kwazo ukufakwa kanye nezidingo zokunakekelwa okuphansi zinikeza isisombululo esingabizi kakhulu samaphrojekthi wokwakha amapayipi.Njengoba isidingo sokuthuthwa okuthembekile, okuphumelelayo kukawoyela, igesi yemvelo namanzi siqhubeka sikhula, ukubaluleka kwepayipi elishiselwe i-arc elihlanganisiwe elisezingeni le-API 5L alikwazi ukweqiwa.Ngokusebenza kwayo okuqinisekisiwe nokuguquguquka,ipayipi le-arc elingaphansi kwamanzi elisontekilekulindeleke ukuthi iqhubeke nokuba yingxenye ebalulekile yengqalasizinda eqhuba umnotho womhlaba.