I-ASTM A335 P9 Ipayipi Lensimbi Yengxubevange - IBHULO

Iphrofayili Yomkhiqizo

I-ASTM A335 Gr. I-P9 iyipayipi yensimbi engenamthungo ye-ferritic alloy eyenzelweisevisi eqhubekayo ezingeni lokushisa eliphezulu nokucindezela. Mayelana9% chromium kanye 1% molybdenum, ihlezi emndenini we-9Cr-1Mo osetshenziswa kakhulu ekukhiqizeni amandla, ama-heaters e-petrochemical, ama-reformers, nemigqa yezinqubo ezishisayo.

NgoIpayipi le-Octal, amapayipi e-P9 ahlinzekwa ngaphakathiisimo esijwayelekile nesithambile, ihlolwe ngokugcwele, futhi ilandeleka lapho ishisa/inqwaba, ifanele amabhayela, iheda, izifudumezi ezinkulu, izintambo zesitimu kanye{0}}nokushisa okuphezulu kwamapayipi enqubo yezinga lokushisa lapho i-plain carbon steel kanye nama-Cr alloy aphansi{1}}angakwazi ukugcina i-oxidation noma ukumelana nokukhuphuka.

Isisekelo Sempahla kanye Nensimbi

Ngokungafani ne-carbon steel evamile, i-P9 yakhelwe ukugcina amandla nobuqotho bomhlaba ngemuvaizinkulungwane zamahoraekushiseni okuphezulu kwensimbi.

I-Chromium (~9%)yakha ukubumbana, okunamathelayoIfilimu ye-Cr₂O₃phezulu, ukunciphisa ukukala kanye nokufakwa kwe-oxidation kusitimu esishisayo noma{0}}emkhathini wegesi oxubile.
I-Molybdenum (~1%)iqinisa i-matrix ye-ferritic futhi ibambezele ukuwohloka kwe-creep ngokuvimbela ukunyakaza kokuphuma.
Ngemvanormalizing + tempering, insimbi ibonisa aIsakhiwo se-ferrite-carbide esithambileenemingcele ezinzile yokusanhlamvu nama-carbides alawulwayo (ikakhulukazi i-M₂₃C₆ / M₆C) eduze kwemingcele - yilokhu okugcina kukhasa{1}}amandla okuqhekeka futhi kugweme ukuqina komngcele wokusanhlamvu ngesikhathi sokuchayeka isikhathi eside.

Ngakho-ke, kusevisi-yezinga lokushisa eliphezulu (amakhoyili aphezulu, imigqa yokudlulisa ye-reformer), i-P9 ihlala izinzile ngobude isikhathi eside kunama-alloys ohlobo lwe-P5/P11.

Izidingo Zekhemikhali Nezomshini

Ukwakheka Kwekhemikhali (ububanzi obujwayelekile)

Isici	Okuqukethwe, %	Iqhaza
I-Chromium (Cr)	8.0 – 10.0	Ukumelana ne-oxidation / ukukala, -ukuzinza okuphezulu
I-Molybdenum (Mo)	0.90 – 1.10	Amandla okunwaya nokuphuka
Ikhabhoni (C)	Ngaphansi noma kulingana no-0.15	Ilungisa ubulukhuni nokuqina
I-Manganese (Mn)	0.30 – 0.60	Ukusebenza okushisayo
I-silicon (Si)	Ngaphansi noma kulingana no-1.00	Isekela ukumelana ne-oxidation
I-Phosphorus (P), Sulfur (S)	Ngaphansi noma kulingana no-0.025	Gcina i-ductility nokuqina

I-Mechanical Properties (ASTM A335 P9)

Amandla okuqina:Kukhulu noma kulingana no-415 MPa
Amandla okukhiqiza:Inkulu noma ilingana no-205 MPa
Ubude:Kukhulu noma kulingana no-30%
Ukuqina:Ngaphansi noma kulingana nokuthi 163 HBW

Lawa manani awesimo esijwayelekile sokulethwa-kanye{1}}nesimo esishisayo futhi ahloselwe ukunikeza ingxubevange yemajini eyanele yokucindezela kanye nokwakheka kwezinga lokushisa.

Umzila Wokukhiqiza Nokwelashwa Kokushisa

Ukuqinisekisa ukuthi i-9Cr-i-1Mo chemistry empeleni iphenduka ibe i-microstructure ephezulu edingekayo-yezinga lokushisa eliphezulu, i-Octal Pipe isebenzisa umzila olawulwayo wamapayipi ongenazihibe:

Billet & ukubhoboza

I-Clean Cr-I-Mo billets ishiselwa ezingeni lokushisa elifanele lokubhoboza (cishe u-1100–1150℃), bese ibhobozwa/inwetshwe ukuze yenze izimbobo ezinokugeleza okusanhlamvu okufanayo.

Umdwebo oshisayo/obandayo

Ukuqina kwezindonga kulethwa kushejuli ehleliwe (SCH 10 - SCH 160). Ukulinganisa okuphakathi kungasetshenziswa lapho ukunciphisa okunzima noma ukubekezelelana okuseduze kuhilelekile.

Ukujwayela (cishe. 900–950℃)

Icwenga i-ferrite, incibilikisa{0}}ama-carbide angafananga, isusa ukucindezeleka kwangaphakathi ekwakhekeni.

Ukushisa (cishe. 675–760℃)

Ibuyisela i-ductility futhi ikhiye ekusatshalalisweni kwe-carbide oyifunayo ukuze izakhiwo eziqhekekayo zihambisane nezidingo ze-ASTM.

Ikhwalithi yokulawula

I-Ultrasonic / eddy-i-NDT yamanje emzimbeni wepayipi neziphetho
Ukuhlolwa kwe-Hydrostatic
Ukuqina nokusampula komshini ngeqeqebana ngalinye
EN 10204 3.1/3.2 isitifiketi sokulandeleka

Umphumela uba ipayipi elinama-carbides acolekileyo, asakazwe ngokulinganayo kanye ne-ferritic matrix ezinzile - isakhiwo oyifunayo-sesevisi yesikhathi eside esishisayo.

astm a335 p9 chrome moly seamless pipe bundles in stock -octal pipe asme sa335 p9 9cr 1mo alloy steel pipe for high temperature service -octal pipe

I-Dimensional Supply Range

Ipharamitha	Ukunikezwa Okujwayelekile
Ngaphandle Ububanzi	½″ – 24″ (12.7 – 610 mm)
Ukuqina Kwezindonga	I-SCH 10 – SCH 160 (kuhlanganise ne-WT ekhethekile)
Ubude	Kufikela ku-12 m, SRL / DRL / sika-kuya-ubude
Iyaphela	Beveled for welding, noma ithafa
Ukubekezelelana	OD ±1 %, WT ±10 % (noma njenge-oda ngalinye)

Ubude obukhethekile nokubekezelelana okuqinile kungaxoxwa ngakho kumaphrojekthi kabhayela/HRSG.

{{0}Ukuziphatha Kwesevisi Yezinga lokushisa Eliphezulu

Lapho izinga lokushisa lensimbi likhuphuka libheke600-700 degree, i-P9 igcina izinto ezimbili amamaki aphansi aqala ukulahlekelwa:

Ubuqotho bobuso– ifilimu ye-Cr-rich oxide ibambezela ukukhula kwesikali futhi inciphise ukusakazeka kwe-oxide, ngakho ukungcoliswa kwamashubhu nokucwecwa kodonga kuhamba kancane.
Creep ukuzinza– nge-Mo esixazululweni nama-carbides alawulwayo, ingxubevange ingafinyelela amandla okuqhekeka ngendlela edingekayo ngesevisi yamahora angu-10⁴ h cishe ngo-600 degree.

Kungakho i-P9 icaciswa njalo:

Izitshalo zamandla:i-superheater kanye namashubhu okushisa kabusha, izihloko zesitimu, imigqa yesitimu eyinhloko eshisayo
Izifudumezi zokucwenga / ze-petrochemical:amashubhu e-reformer, imigqa yokudlulisa,{0}}amapayipi kagesi ashisayo
Izitshalo{0}}zezinga lokushisa eliphezulu:ama-heaters, ama-manifolds, imigqa yokuphakelayo kwe-reactor
Amayunithi ashisayo kawoyela negesi:umjovo we-steam, imigqa yokucubungula i-hydrogen{0}}esebenza ngaphansi kwezimo ezishisayo nezingamabhayisikili

Uma kuqhathaniswa ne-P5/P11, izipesheli ze-P9ukulawulwa okungcono kwe-oxidation kanye nokuhamba kancane kwe-microstructural coarsening, okuvame ukuhumusha izikhathi ezinde zokuhlola.

I-Octal Pipe Supply & Documentation

Ukukhiqizwa kuI-ASTM A335 / ASME SA-335kanye nezimfuneko ze-ISO/EN ezihlobene
Ukulethwa kungenileejwayelekile futhi enolakaisimo
Mechanical, NDT, hydrostaticimibiko yokuhlola yawo wonke amaqoqo
3.1 / 3.2 izitifiketietholakalayo
Ukupakisha kulungele ukuthunyelwa kanye{0}}nezokuthutha zamabanga amade
Iphrojekthi-yosekelo lweleveli ye-QA/QC yamandla, indawo yokucwenga kanye nosonkontileka bezitshalo zamakhemikhali

FAQ

Q1: Lisetshenziselwa ini ipayipi le-ASTM A335 P9 (ASME SA335 P9)?

A1:I-chrome engenamthungo-ipayipi le-moly alloy yezinga eliphezulu-lokushisa,{2}}phezulu{2}}isevisi yengcindezi emandleni namasistimu e-petrochemical.

Q2: Isho ukuthini i-"9Cr-1Mo" ngepayipi le-P9?

A2:Isho idizayini yengxubevange ene-chromium ephezulu ne-molybdenum yokumelana ne-oxidation namandla-aphakeme ezinga lokushisa.

Q3: Ihluke kanjani i-P9 ku-P22 noma i-P91?

A3:I-P9 iyibanga le-9Cr-1Mo; I-P22 iyi-2.25Cr-1Mo, kuyilapho i-P91 iyibanga le-9Cr-1Mo elilungisiwe elinokulawula okuqinile kwensimbi.

Q4: Isiphi isimo sokushisa{1}}esivame ukucaciswa ku-A335 P9 ipayipi elingenamthungo?

A4:Isimo sokwelashwa{0}}sokushisa esilawulwayo (esivame ukwenziwa sibe sijwayelekile futhi sibambisene) esinamarekhodi abhaliwe njengoba kudingwa i-oda/i-spec.

Q5: Yini okufanele ngiyicele ukuze ngiqinisekise ikhwalithi yepayipi le-P9 ngaphambi kokuthenga?

A5:3.1 MTC enokulandeleka kokushisa, imiphumela yekhemistri/yemishini, kanye ne-NDE/hydrotest edingekayo ngokwencazelo yephrojekthi.