Amandla Epayipi Elishiselwe Kabili Kuzicelo Zezimboni

Incazelo emfushane:

Emhlabeni wamapayipi embonini, ukukhethwa kwempahla nezindlela zokwakha kungaba nomthelela omkhulu ekusebenzeni okuphelele nasekuphileni isikhathi eside kwesistimu. Enye indlela edumile ngenxa yamandla nokuqina kwayo ukusebenzisa ipayipi elishiselwe kabili. Lawa mapayipi aklanyelwe ukumelana nezingcindezi eziphakeme, amazinga okushisa aphakeme kanye nezimo ezinzima zemvelo, okwenza kube ekahle ezinhlobonhlobo zezicelo zezimboni.

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Amapayipi ashiselwe kabiliakhiwe ngama-welds amabili azimele ukuze enze uxhumano oluqinile noluthembekile phakathi kwezingxenye zamapayipi. Le nqubo ye-welding ephindwe kabili iqinisekisa ukuthi ipayipi ingakwazi ukumelana nokucindezeleka kanye nezinkinga ezingase zihlangabezane nazo ngesikhathi sokusebenza, okwenza kube ukukhetha okuthembekile kwezinhlelo zokusebenza ezibucayi lapho ukwehluleka akuyona inketho.

Enye yezinzuzo eziyinhloko zamapayipi ane-welded kabili yikhono labo lokusingatha izindawo ezicindezelayo. Inqubo ye-welding ephindwe kabili idala ukuxhumana okungenamthungo futhi okuqinile phakathi kwezigaba zamapayipi, ukuqinisekisa ukuthi zingakwazi ukumelana nezingcindezi zangaphakathi ngaphandle kwengozi yokuvuza noma ukwehluleka. Lokhu kuwenza alungele ukusetshenziswa njengamapayipi kawoyela negesi, lapho ubuqotho besistimu yamapayipi kubaluleke kakhulu ekuphepheni nasekusebenzeni kahle.

Ithebula 2 Izakhiwo Eziyinhloko Zomzimba Nezamakhemikhali Zamapayipi Ensimbi (GB/T3091-2008, GB/T9711-2011 kanye ne-API Spec 5L)
Okujwayelekile	Ibanga Lensimbi	Amakhemikhali (%)						I-Tensile Property						Ukuhlolwa Komphumela we-Charpy(V notch)
		c	Mn	p	s	Si	Okunye	I-Yield Strength (Mpa)		Amandla Okuqina (Mpa)		(L0=5.65 √ S0)(iminithi Lokunwetshwa Kwezinga) (%)
		ubuningi	ubuningi	ubuningi	ubuningi	ubuningi	Okunye	imiz	ubuningi	imiz	ubuningi	D ≤ 168.33mm	D ＞ 168.3mm
I-GB/T3091 -2008	Q215A	≤ 0.15	0.25 ＜ 1.20	0.045	0.050	0.35	Ingeza i-NbVTi ngokuvumelana ne-GB/T1591-94	215		335		15	> 31
	Q215B	≤ 0.15	0.25-0,55	0.045	0.045	0.035		215		335		15	> 31
	Q235A	≤ 0.22	0.30 ＜ 0.65	0.045	0.050	0.035		235		375		15	>26
	Q235B	≤ 0.20	0.30 ≤ 1.80	0.045	0.045	0.035		235		375		15	>26
	Q295A	0.16	0.80-1,50	0.045	0.045	0.55		295		390		13	>23
	Q295B	0.16	0.80-1,50	0.045	0.040	0.55		295		390		13	>23
	Q345A	0.20	1.00-1.60	0.045	0.045	0.55		345		510		13	>21
	Q345B	0.20	1.00-1.60	0.045	0.040	0.55		345		510		13	>21
I-GB/T9711-2011 (PSL1)	L175	0.21	0.60	0.030	0.030		Uma ukhetha ukungeza enye yezinto ze-NbVTi nanoma iyiphi inhlanganisela yazo	175		310		27		Inkomba eyodwa noma ezimbili zokuqina kwamandla kanye nendawo yokugunda ingase ikhethwe. Nge-L555, bona indinganiso.
	L210	0.22	0.90	0.030	0.030			210		335		25
	L245	0.26	1.20	0.030	0.030			245		415		21
	L290	0.26	1.30	0.030	0.030			290		415		21
	L320	0.26	1.40	0.030	0.030			320		435		20
	L360	0.26	1.40	0.030	0.030			360		460		19
	L390	0.26	1.40	0.030	0.030			390		390		18
	L415	0.26	1.40	0.030	0.030			415		520		17
	L450	0.26	1.45	0.030	0.030			450		535		17
	L485	0.26	1.65	0.030	0.030			485		570		16
I-API 5L (PSL 1)	A25	0.21	0.60	0.030	0.030		Okwensimbi yebanga B,Nb+V ≤ 0.03%;yensimbi ≥ grade B,ongakukhetha ukungeza i-Nb noma i-V noma inhlanganisela yakho, kanye ne-Nb+V+Ti ≤ 0.15%	172		310		(L0=50.8mm) kufanele ibalwe ngokuvumelana nefomula elandelayo:e=1944·A0 .2/U0 .0 A:Indawo yesampula ku-mm2 U: Amandla amancane acacisiwe okubamba ku-Mpa		Awekho noma amanye noma womabili amandla okuthinta nendawo yokugunda edingekayo njengombandela wokuqina.
	A	0.22	0.90	0.030	0.030			207		331
	B	0.26	1.20	0.030	0.030			241		414
	X42	0.26	1.30	0.030	0.030			290		414
	X46	0.26	1.40	0.030	0.030			317		434
	X52	0.26	1.40	0.030	0.030			359		455
	X56	0.26	1.40	0.030	0.030			386		490
	X60	0.26	1.40	0.030	0.030			414		517
	X65	0.26	1.45	0.030	0.030			448		531
	X70	0.26	1.65	0.030	0.030			483		565

Ngaphezu kwamandla ayo, ipayipi elihlanganisiwe eliphindwe kabili liyakwazi ukumelana namazinga okushisa aphezulu, okwenza lifanele izinqubo ezihlukahlukene zezimboni. Kungakhathaliseki ukuthi ithutha uketshezi olushisayo noma amagesi, noma isebenza endaweni enamazinga okushisa ashintshayo, ipayipi elishiselwe kabili ligcina ubuqotho besakhiwo nokusebenza kwalo, liqinisekisa ukusebenza okuthembekile ngaphansi kwezimo eziyinselele kakhulu.

Ukwengeza, ukuqina kwepayipi elishiselwe kabili kwenza kube ukukhetha okungabizi kakhulu kwezicelo zezimboni. Ikhono lazo lokumelana nokuguga, ukugqwala nezinye izinhlobo zokuwohloka kusho ukuthi zidinga ukulungiswa okuncane nokushintshwa, ukunciphisa izindleko zokusebenza zizonke kanye nesikhathi sokuphumula.

Sekukonke, ukusetshenziswa kwepayipi elishiselwe kabili kunikeza uhla lwezinzuzo zezicelo zezimboni, kufaka phakathi amandla, ukuqina nokuthembeka. Ikhono labo lokusingatha izingcindezi eziphezulu, izinga lokushisa elibi kakhulu kanye nezimo zemvelo ezinzima zibenza balungele izimboni eziningi ezivela kuwoyela negesi kuya ekucutshungulweni kwamakhemikhali. Ngokusebenza kwayo okuqinisekisiwe kanye nerekhodi lempilo yesevisi, ipayipi elishiselwe kabili liyimpahla ebalulekile kunoma yiluphi uhlelo lwamapayipi ezimbonini.