ASTM A213 T11 Ennyonyola ya Tubi - BLOG

Ennyonnyola y’ebintu

ASTM A213 Grade T11 ye ttanka ya ferritic chromium-molybdenum (Cr-Mo) etaliimu buzibu ekozesebwa mu mbeera z’omukka ogwokya ne ggaasi ow’omukka-. Ekigero kino kikoleddwa ku bitundu ebirina puleesa-mu bboyiyira z’amaanyi, HRSG, ebbugumu ery’amafuta n’ebyuma ebiwanyisiganya ebbugumu eby’ebbugumu erya waggulu ekyuma kya kaboni we kitasobola kukwata buziyiza bwa oxidation oba amaanyi g’okuseeyeeya.
Octal Pipe egaba T11 mu mbeera eya bulijjo-ne-tempered, n’okufuga ebipimo, okugezesebwa mu bujjuvu okutuuka ku ASTM A213/A1016 ne satifikeeti z’ekyuma, kale esobola okugenda butereevu mu bboyiyira n’okukola enkola.

astm a213 t11 tubing bundles for boiler and superheater service - octal pipe

Ebirungo ebikola eddagala

Ekintu	Okwesiima (%)	Enkola
C	0.05 – 0.15	Awa amaanyi n’okuziyiza okuseeyeeya, asigala nga weldable
Mn	0.30 – 0.60	Ductility, okukola obulungi mu bbugumu
Si	0.50 – 1.00	Awagira okuziyiza oxidation
P	Entono oba yenkana 0.025	Ekoma ku kuzibikira
S	Entono oba yenkana 0.025	Efugibwa olw’obugumu
Cr	1.00 – 1.50	Okuziyiza okusika mu mukka / ggaasi w’omukka
Mo	0.44 – 0.65	Amaanyi g’okuseeyeeya n’okukutuka

Bbalansi eno eya chromium–molybdenum eri wansi okusinga T22 oba ebirala ebya waggulu-Cr, y’ensonga lwaki T11 efukamira n’okuweta mangu, naye ekyawona okuweereza kwa diguli 500–600.

Ebintu eby’ebyuma

Eby'obwa nannyini	Ekyetaagisa	Omugaso
Amaanyi g’okusika	Okusinga oba okwenkana 415 MPa (60 ksi) .	Okutwalira awamu obusobozi bw’okutikka
Amaanyi g’amakungula (0.2%) .	Okusinga oba okwenkana 205 MPa (30 ksi) .	Aziyiza okukyukakyuka okw’olubeerera
Okuwanvuwa	Okusinga oba okwenkana ebitundu 30% .	Yeetaagibwa okubeebalama, okukoola, okuweta
Obukaluba	Entono oba yenkana 163 HBW	Akuuma obugumu ku bugaali obw’ebbugumu

Emiwendo gino gikwatagana n'embeera y'okutuusa eya normalized-ne-tempered delivery projects z'amasannyalaze n'okulongoosa gye zitera okulaga.

Okukola n’okulongoosa ebbugumu

Ku boiler tube service ekkubo likulu nnyo nga chemistry. Octal Pipe ekozesa ekkubo eritaliiko buzibu wansi wa ASTM A213/A1016:

alloy billet eyokya-fumibwa oba efulumizibwa okukola ekituli ky’amaloboozi
ttanka eyokya-ezingibwa oba ennyogovu-esika okutuuka ku OD eragiddwa, ekisenge n'okumaliriza kungulu (ekikulu eri ttanka eziwanyisiganya ebbugumu-)
ttanka efuulibwa eya bulijjo ku diguli nga 940–980 okulongoosa matrix ya ferritic, okuggyawo banding n’okwenkanya eby’obugagga eby’ebyuma okuyita mu buwanvu
ttanka efuumuulwa ku diguli nga 675–755 okuzzaawo ductility n’okusiba okusaasaana okulungi okwa carbides mu kifo

Enzirukanya eno eya N+T y’ewa T11 microstructure yaayo ennywevu: chromium esobola okuzimba firimu ya oxide enywevu, molybdenum esobola okukola omulimu gwayo mu kunyweza creep, era tube tefuuka nkalu nnyo okuweta. Oluvannyuma lw’okulongoosebwa mu bbugumu, ttanka zigololwa, ne zigezesebwa mu ngeri ya hydrostatically, era ne zeekebejjebwa mu nkola ya NDE eragiddwa (eddy-current oba ultrasonic) nga tebannaba kussaako kabonero n’okupakinga. Buli mutendera guwandiikibwa kale ttanka n’erondoolebwa okudda ku bbugumu.

Obuwanvu bw’ebipimo

Parameter	Range / ebikwata ku nsonga eno
Diameter ey’ebweru	12.7 – 127 mm (0.5 – 5 mu) .
Obugumu bwa bbugwe	1.2 – 12 mm
Obuwanvu	Okutuuka ku mmita 12; SRL / DRL / okusala-okutuuka ku-obuwanvu
End okumaliriza	Plain, beveled, oba etegekeddwa U-bending / finning
Okugumiikiriza OD	mu ngeri entuufu ± 1% (buli ASTM A1016) .
Okugumiikiriza bbugwe	mu ngeri entuufu ± 10% .
Obugolokofu	mu ngeri entuufu Ekitono oba ekyenkana mm 0.8/m

Kino kikwata ku ttanka za boiler panel eza bulijjo, superheater/reheater coils, ne refinery heater coils.

Enkola y’obuweereza

Mu nkola T11 ekola okisayidi erimu chromium-rimu, kale okufiirwa kw’ekyuma kya tube n’okuzimba ekigerageranyo-okugenda mpola okusinga ku kyuma kya kaboni. Molybdenum akendeeza ku kwekulukuunya n’okukutuka, ekintu ekikulu eri ttanka ezituula wansi w’ebbugumu ne puleesa okumala enkumi n’enkumi z’essaawa. Olw’okuba ensengekera ya ferrite efuuse tempered, tube egumira enzirukanya y’okutandika–okuyimirira mu HRSGs n’ebimera ebikola cogeneration awatali kufiirwa bugolokofu mangu nnyo. Welds zikuuma obulungi oluvannyuma lwa PWHT nga ebyuma ebijjuza ebya low-alloy ebirina ebisaanyizo bikozesebwa.

Okusaba

boiler waterwall, superheater, reheater ne economizer tubes mu mabibiro g’amasannyalaze ag’ebbugumu
HRSG / ezigatta-cycle ezikola omukka
ebyuma ebibugumya enkola y’amafuta n’ebyuma ebirongoosa
ebisusunku eby’ebbugumu eringi-ne-ebiwanyisiganya ebbugumu ebya ttanka
layini z’amasannyalaze n’enkola ez’ebbugumu munda mu yuniti z’amasannyalaze n’eddagala

Okukebera n’okuwandiika ebiwandiiko

Okukebera kukolebwa okusinziira ku ASTM A213 n’ebisaanyizo bya A1016 ebya bulijjo. Ekyo kizingiramu okwekenneenya kwa hydrostatic oba eddy-current okuzuula obulungi bwa bbugwe, okusika n’okukaluba buli kitundu ky’okujjanjaba ebbugumu, okufuumuula/okufuuwa okukakasa ductility, nga kwogasse n’okukebera okulaba n’ebipimo. Ku pulojekiti ezirina QA/QC esingako, Octal Pipe esobola okwongerako okukebera kwa ultrasonic oba radiographic. Tubu zonna ziweebwa EN 10204 3.1 oba 3.2 MTCs kale nnannyini yo asobole okuteeka ebivudde mu kemiko, ebyuma ne NDE okusinziira ku nnamba y’ebbugumu.

Lwaki efuna ASTM A213 T11 okuva mu Octal Pipe

real seamless Cr-Mo tubing mu mbeera eya bulijjo-ne-tempered, so si generic carbon-steel tube yokka
ebipimo, okugezesebwa n’okussaako obubonero nga bikwatagana n’amaanyi, bboyiyira, HRSG n’ebiragiro by’ekyuma ekirongoosa
export-bundles ezeetegefu nga zirina obukuumi ku nkomerero olw'okusindika ebanga eddene-
obuwagizi bwa yinginiya okukwatagana ne T11 ne Cr-Mo grades ezikwatagana (T22, A335 P11/P22) nga yuniti y’emu ekozesa aloy eziwerako
ensengeka y'olupapula ekintu ekiwandiikiddwa-ekisooka era ekikwata ku by'ekikugu, okuyamba omukutu gwo omupya okufuna index ng'olupapula lw'omugabi, so si birimu template

Ebibuuzo ebibuuzibwa