Ewubere nsogbu T9 iji dozie
Ụlọ akụ superheater, sekit reheater, ngalaba convection HRSG na igwe mkpuchi ihu tube -okpomọkụ igwe na ibu oxidation nke na-akarị obere ala-Cr alloys. ASTM A213 T9 na-enye ike dị ọkụ dị elu na omume nkwụsi ike karịa 1.25-2.25Cr na-enweghị ikike imepụta nke ígwè 9Cr-V-Nb, nke na-eme ka ọ bụrụ nhọrọ bara uru ebe ogologo oge, gradients okpomọkụ na iguzosi ike n'ezi ihe na-achịkwa ihe egwu.
Ihe nkọwapụta ahụ kpuchiri
ASTM A213/SA213 na-akọwapụta alloy enweghị nkebi{2}} ígwètubingmaka ndị na-ekpo ọkụ na ndị na-ekpo ọkụ ọkụ. Ihe oru ngo na-akọwapụta dayameta dị n'èzí, mgbidi opekempe na bee ogologo ozugbo na mpempe akwụkwọ data kama ịhazi usoro ọkpọkọ. A na-esikarị ike iguzo ọtọ na ovality maka tube -na{3}}tubesheet dabara; A na-ebunye nsọtụ larịị ma ọ bụ square{4} maka ịgbado ọkụ, yana bevels naanị ebe a na-eme atụmatụ welds ubi.
Ihe mejupụtara nke na-arụ ọrụ
Tebụl 1 - A213 T9 mejupụtara kemịkalụ (wt.%)
|
Ihe |
Oke |
ndetu injinia |
|
C |
Ihe na-erughị ma ọ bụ hà nhata 0.15 |
Ntụle ike-ductility maka bends na coils |
|
Mn |
0.30–0.60 |
Deoxidation; nkwado siri ike{{0} |
|
Si |
Ihe na-erughị ma ọ bụ hà nhata 0.50 |
Ngafe nwere ike ịda mbà n'obi |
|
P |
Ihe na-erughị ma ọ bụ hà nhata 0.025 |
Weldability na njikwa ike |
|
S |
Ihe na-erughị ma ọ bụ hà nhata 0.025 |
Mma na-ekpo ọkụ workability na ala sọlfọ |
|
Cr |
8.00–10.00 |
Uto oxide dị nwayọọ; mma na-ekpo ọkụ tensile |
|
Mo |
0.90–1.10 |
Nkwụsi ike nke carbide; nguzogide na-akpụ akpụ na okpomọkụ |
Ime ụlọ-Okpomọkụ nrụzi ihe ndabere
Tebụl 2 - Njirimara kacha nta maka nyocha
|
Ngwongwo |
T9 kacha nta |
|
Ike ọdụdọ |
= 415 MPa (60 ksi) |
|
Mpụta ike |
= 205 MPa (30 ksi) |
|
Ogologo oge |
= 20% |
Imewe na-eji nrụgide ekwe omume na ọnọdụ okpomọkụ na-arụ ọrụ site na koodu nchịkwa.
Oxidation na creep na ezigbo ọrụ
A na-achịkwa arụmọrụigwe okpomọkụ, mmalite-nkwụsị ugboro na nkwụnye ego n'eluimekọ ihe ọnụ. Na ~9% Cr, oxidation na-agbaso aiwu parabolic(oxide-okpukpu² ≈ k·oge); Ọnụọgụ parabolic dị obere karịa nke obere ígwè{{1}Cr, nke na-amachi oke nha na mmemme nhụsianya. Mo na-eme ka carbide kwụsie ike, na-egbu oge ọka - oke ntu na uto oghere ka mfu mgbidi site na oge- nrụrụ dabere na-eji nwayọ nwayọ.
N'imena-ekpo ọkụ, akọrọ ngalabadị ka sekit na-ekpo ọkụ{0} na ụlọ akụ convection na-ekpo ọkụ, T9 na-echekwa okirikiri na ọkpụrụkpụ mgbidi karịa nhọrọ 1.25–2.25Cr, na-ebelata ugboro ole retube na mmetọ nke ala na-akpata site n'ikesa. N'ọrụ HRSG na ịnya igwe na-agakarị, ndị na-agafe agafe na-ebuli nrụgide oxide ma na-abawanye spallation/"re-oxidation"; na-emezi ọnụego rampụ, na-ebuli soot{6}}ịfụ, na nsochitube - igwe okpomọkụ (TMT)Ebe a na-ekpo ọkụ na-ebelata ihe ize ndụ. Ihe gbasara kemistri nkwụnye ego: alkali -ọgaranya ma ọ bụ sọlfọ{2} na-ebu ash nwere ike gbanwee oxide wee mee ka mwakpo mpaghara mee ngwa ngwa, yabụ nyocha mmanụ/ash jikọtara yana nyocha borescope na-eji atụmatụ nhicha na oge nyocha.
Maka creep, uru T9 na-anọdụ nampaghara ogologo ndụ{{0}: ọka dị mma na-aga n'ihu - netwọọdụ carbide oke site na iwe ọkụ kwesịrị ekwesị na-eme ka oge mgbawa ma na-edobe nrụrụ otu. Ọkụ ọkụ na-ekpo ọkụ ma ọ bụ na-arịa ọrịa{2} nke a na-achịkwa na-agbakọta ọka na spheroidizes carbides, na-emepụta mpụta n'oge, ovality ma ọ bụ ntapu. Na omume, trendingoxide ọkpụrụkpụ / uru ibuyana akụkọ TMT na-enye ntọala akaebe maka nhazi oge nyocha.
Tebụl 3 - mgbama ubi vs nzaghachi injinia
|
Mgbama mpaghara |
Nzaghachi injinia |
|
Ọsọ ΔP ịrị elu yana ọdịda arụmọrụ |
Lelee ọnụ ọgụgụ spallation; tie soot{0}} na-afụ na igba egbe |
|
Maapụ IR na-egosi ebe dị ọkụ na mpaghara |
Nyochaa ọta / baffles na nkesa eruba; windo ọkwa nyocha |
|
Mmalite-nkwụsị ọnụ dị elu karịa imewe |
Mee ka ọnụ ọgụgụ rampụ dị nro; belata ogologo oge nke borescope/UT |
Akụkụ ndị na-arụ ọrụ na ụlọ ahịa ahụ
Tebụl 4 - envelopu ahụkarị
|
Oke |
Window nkịtị |
Ihe ndetu |
|
Dayameta dị n'èzí |
12.7–101.6 mm (½–4 anụ ọhịa) |
OD ndị buru ibu na-adabere n'okporo ụzọ igwe nri |
|
Ọkpụrụkpụ mgbidi |
1.2-12.7 mm |
Mgbidi siri ike dị site na ajụjụ |
|
Bee ogologo |
Ruo ~ 12 m |
Obere ala welds na ngwugwu |
|
Geometrics |
Ogologo kwụ ọtọ / ovality |
Ọkụ ka mma-Ikechi akwụkwọ na dabara |
Iguzosi ike n'ezi ihe dị elu, ịdị ọcha na nchekwa
Ọnọdụ dị n'elu na-ekpebikarị oge ndụ n'ọrụ ọkụ. Akara njikwa bara uru bụ:de -ọnụ → dị ọcha → nkụ → okpu → kechie → nyochaa. Mgbe emechara, wepu tint okpomọkụ na ihe fọdụrụ na ID/OD; were usoro mgbasa ozi dị ọcha kpochaa ID ahụ ka ọ bụrụ ebumnuche edepụtara (dịka ọmụmaatụ, ebe igirigi dị n'okpuru gburugburu site na oke akọwapụtara). Kwesịrị ekwesịmkpuchi ngwụchama jiri mkpuchi mkpuchi na-egbochi uzuzu na mmiri mmiri; na-echekwa ùkwù n'ala na drainage na UV nchebe.
Nnabata bụ na ITP ka QA nwee ike ịbanye na-enweghị arụmụka. Kọwaa ihe “dị ọcha” pụtara (klas a na-ahụ anya, oke chloride/mmanụ ma ọ bụrụ na ọdabara), etu esi enyocha nkụ, na nkwakọ ngwaahịa achọrọ maka ihu igwe nchekwa. Debe ngwá ọrụ carbon - nchara site na tubing T9 iji gbochie ntinye ígwè n'efu -; ebe ụlọ ahịa agwakọta na-agaghị ekwe omume, mee ka post{5}} dị ọchanyocha nke ferroxylna samples. Tupu ahapụ ya, dekọọ foto ma were ID ngwugwu were ndekọ nchekwa ahụ ka ndị ọrụ nrụnye mara na emerụbeghị ahịrị ahụ na nchekwa.
Ndeba akwụkwọ ọkọnọ
Maka ọrụ dabere na ASTM A213 T9,Ọkpụkpọ Octalna-enye tubing enweghị nkebi, na-ahazi usoro na akwụkwọ na ọrụ ITP, ma nwee ike ịhazi ịgba akaebe onwe ya (dịka, BV, SGS) mgbe achọrọ ya.
FAQ
Q1: Gịnị bụ ASTM A213 T9 (ASME SA213 T9) tubing eji?
A1:9Cr na-enweghị ntụpọ{2}}1Mo ferritic alloy tubing maka igwe ọkụ ọkụ, ihe ọkụ ọkụ, na ihe ndị na-agbanwe okpomọkụ dị elu-okpomọkụ, ọrụ nrụgide dị elu.
Q2: A213 T9 ọ bụ A335 P9?
A2:A na-ewerekarị ha ka ihe ha nhata site na kemịkalụ/UNS (T{0}} tubing spec, P9=pipe spec), mana ị ga-adakọrịrị n'ụkpụrụ ọrụ a chọrọ na ogo ule.
Q3: Gịnị ka m ga-arịọ iji nyochaa ASTM A213 T9 tubing àgwà tupu ịzụta?
A3:3.1 MTC nwere ọnụọgụ okpomọkụ + ọnọdụ ọgwụgwọ okpomọkụ, nsonaazụ kemịkalụ / igwe, hydrotest ma ọ bụ NDE (dị ka akọwapụtara), nlele akụkụ, yana akara zuru oke / traceability.
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