Pitsa ea ho se tsebe-taba ea mela e ka tlas'a lefatše

Tlhaloso e khutšoane:

Ha u theha lipeiti tsa khase ea tlhaho tsa khase, ho khetha lintho tse bonahalang ho bohlokoa ho netefatsa polokeho le tse sebetsang tsa meaho ea meralo. Hollow section structural tubes, especially spiral submerged arc tubes, are becoming increasingly popular due to their superior strength, durability and corrosion resistance. Ka blog ena, re tla hlahloba bohlokoa ba Hollow-KARTSHARASETSI OA HAANG TLHOKOMELISO HO POPITON ea khase ea tlhaho le melemo ea bohlokoa eo ba e fang melemo.

Romella lengolo-tsoibila ho rona

Lintlha tsa sehlahisoa

Li-tag tsa lihlahisoa

Spiral e hlasetsoeng e kenelletsengPipesli sebelisoa hohle kahong ea mela ea khase ea tlhaho ka lebaka la ts'ebetso ea tsona e ikhethang ea ho etsa lintho. Li-pipes li thehoa ka ho theha likoti tsa tšepe tse halikiloeng ka sebopeho sa sephara ebe o ba palamisa tšebetso e tenang. Sena se hlahisa liperela tse matla tse matla tse nang le methapo e nang le botenya ba junifomo le ho nepahala phepo e nepahetseng, ho ba etsa hore ba tšoanele lipalami tsa khase ea tlhaho.

Tafole ea 2 ea sehlooho
Tloaelo	Sehlopha sa tšepe	Li-combants tsa lik'hemik'hale (%)						Thepa ea Tense						Charpy (V Noch) tlhahlobo ea tšusumetso
		c	Mn	p	s	Si	Tse ling	Ho hlahisa ka matla (MPA)		Matla a Tense (MPA)		(L0 = 5.65 √ s0) Min ho otlolla maikutlo (%)
		Max	Max	Max	Max	Max	Tse ling	min	Max	min	Max	D ≤ 168.33mmmmmm	D> 168.3mm
GB / t3091 -2008	Q215a	≤ 0.15	0.25 <1.20	0.045	0.050	0.35	Ho eketsa NB \ TI ho latela 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
GB / T9711-2011 (PSL1)	L175	0.21	0.60	0.030	0.030		Boikhethelo ba eketsa e 'ngoe ea NB \ V \ TI Local kapa motsoako ofe kapa ofe oa tsona	175		310		27		E le 'ngoe kapa tse peli tsa tekanyetso ea matla a tšusumetso le ea ho kuta e ka khethoa. Bakeng sa L555, bona Tekanyetso.
	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
Api 5l (PSL 1)	A25	0.21	0.60	0.030	0.030		Bakeng sa kgne, nb + v ≤ 0.03%; bakeng sa sehlopha sa tšepe b, ho eketsa nb + v	172		310		(L0 = 50.8mm) ho baloa ho latela foromo e latelang: E = 1944 · 1		Ha ho na matla kapa ka bobeli ba matla a tšusumetso le sebaka se senyehileng se hlokahala e le boima bo matla.
	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

E 'ngoe ea melemo ea mantlha ea liphaephe tsa hollow-tse hlophisitsoeng ke khanyetso e mpe e kholo ea tsamaiso. Ha ho patiloe ka tlas'a lefatše, lipeipi tsa khase ea tlhaho li pepesetsoa mongobo, lik'hemik'hale tsa mobu le lintho tse ling tse tsamaeang le lijalo. Li-pipi tsa spiral tse nang le spiral li entsoe ka mokhoa o hlakileng ka ho hlaka maemo ana a thata, a netefatsa nako e telele le ho ts'epahala ha likotoana tsa khase ea tlhaho.

Ntle le khanyetso ea Corrosation,Pipes ea Hollow-karolo ea sebopehoFana ka matla le botsitso a phahama, 'me u botsitso, ho li etsa hore li loketsoe ke likokelo tse ka tlas'a lefatše. Bokhabane ba litšoantšo tsa lipeipi tsena bo fana ka matla a matle a ho bolaea mojarong, a ba lumella ho mamella boima ba mobu le matla a mang kantle a sa tlohele ho tšepahala ha bona. Sena ke sa bohlokoa haholo libakeng tse nang le li-gology tse phephetsang, moo lipeipi li lokelang ho khona ho mamella mokhatlo le moputso.

Ntle le moo, karolo ea lejot likarolo tsa sebopeho sa letsopa e tsebahala ka ho feto-fetoha le maemo le katleho ea litšenyehelo. Ba tla ka boholo bo fapaneng le bosetso 'me bo ka etsoa ho fihlela litlhoko tse ikhethang tsa merero ea lipeise ea tlhaho ka tlas'a lefatše. Sena se fokotsa tlhokahalo ea mesebetsi e meng le welding, e fella ka litšenyehelo tse potlakileng le litšenyehelo tse tlase tsa theko. Tšitiso ena e bobebe ea lipeipi tsena e boetse e etsa lipalangoang le ho sebetsana le tse sebetsang haholoanyane, ka ho eketsehileng ho kenya letsoho ho boloka chelete.

Ha ho fihla polokelong le katleho eaMelaoana ea khase ea tlhaho e ka tlas'a lefatše, khetho ea boikhethelo e bohlokoa. Howike-karolo ea sebopeho sa li-arc, haholo-holo shils, matla a ho tsitsipana le tefo ea theko ea khase ea tlhaho. Ka ho tsetela lipampiri tsa boleng bo holimo, litsing tsa lefatše ka ho khetheha, lik'hamphani tsa khase li ka netefatsa hore litulo tsa bona li ts'epahala le litšenyehelo tse lokisetsoang ha nako e telele.

Ka kakaretso, liphaephe tsa karolo ea "li-pipi tsa" li-pic-Cross sebopeho li phetha karolo ea bohlokoa ho ka setsing sa khase ea tlhaho ea tlhaho. Lits'ebetso tsa eona tse matlafatsang tsa corros, matla a maholo le katleho - a sebetsang hantle ho etsa khetho ea pele bakeng sa merero ea ho tsamaisa ha tlhaho. Ka ho khetha lisebelisoa tse nepahetseng bakeng sa meahong e ka tlas'a lefatše, likhoebo tsa khase ea tlhaho li ka boloka polokeho le ts'ehetso ea metheo ea bona, qetellong e thusa ho fana ka khase ea tlhaho ho fana ka khase ea tlhaho e sebetsang ho bareki.