I-ASTM A335 P11 Umbhobho wentsimbi ongenamthungo we-alloy oPhakamileyo{2}}Inkonzo yoBubushushu - IBLOG

Material Overview

I-ASTM A335 iBanga le-P11 lele-i-alloy ephantsi Cr{0}}I-Mo steel family (1–1.5% Cr, 0.5% Mo)yenzelwe ngokukhethekileyo ukusetyenziswa kwi-ubushushu obuphezulu kunye{1}}noxinzelelo oluphezulu lweenkqubo zomoya.Imele ulungelelwaniso phakathi kwamandla oomatshini, ukuxhathisa kwe-oxidation, kunye nokuguquguquka kwemveliso{1}}ilungele izinto ezifana neekhoyili zeheater enkulu, iiheader zoxinzelelo, kunye nemigca yokuhambisa umphunga. Ukususela kumbono we-metallurgical, ii-microstructure ene-ferritic-temperedye-P11 ibonisa ukusasazwa kakuhle kwee-carbides (ikakhulu i-M₂₃C₆ kunye ne-M₆C), ephucula kakhulurhubuluza -ubomi obuqhekezayo kunye nozinzo lwe-dimensional.
I-Chromium ikhuthaza aisikali esishinyeneyo seoxide (Cr₂O₃)ukubunjwa, ukukhusela ngokuchasene nokulinganisa kunye ne-oxidation ukuya kuma-600℃(1110℃F), ngelixa i-molybdenum iqinisa i-ferrite lattice kwaye icotha i-dislocation creep.
Ngokudibeneyo, ezi zinto zokudibanisa zibonelela:

Ixesha elide-ukuxhathisa ukukhasaphantsi komthwalo ozinzileyo kunye nobushushu.
Ukwenziwa kweoksidi okuzinzileyo kuqinisekisa ukukhuselwa komphezulu kunye nokuziphatha okunokuxelwa kwangaphambili.
Egqwesileyoukuweldakunye nokuchaphazeleka okuphantsi kwi-embrittlement emva kokuhamba ngebhayisikile eshushu.
Amanqanaba ekhabhoni alawulwayo agcina ukuqina kwaye athintele ukuqina kweenkozo.

Ngenxa yolu uzinzo lwesinyithi, i-ASTM A335 P11 ihlala iyenye yezona zinto ziqhele ukukhankanywaiityhubhu zebhoyila, izifudumezi ezinkulu, kunye nemibhobho yenkqubokwinkonzo yokuvelisa amandla kunye nenkonzo yokucokisa.

Iipropati zeMichiza kunye nezoomatshini

Isiqalelo	% Uluhlu	Umsebenzi ophambili
Ikhabhoni (C)	0.05 – 0.15	Yandisa amandla kunye nokuxhathisa ukukhasa
IManganese (Mn)	0.30 – 0.60	Ukuphucula ukusebenza okushushu kunye ne-ductility
Isilicon (Si)	0.50 – 1.00	Yongeza ukuxhathisa kwi-oxidation
Iphosphorus (P)	Ngaphantsi okanye ilingana no-0.025	Ilawula ubuqhophololo
Isulfure (S)	Ngaphantsi okanye ilingana no-0.025	Aids machinability
I-Chromium (Cr)	1.00 – 1.50	Yenza ifilimu ye-oxide ekhuselayo
I-Molybdenum (Mo)	0.44 – 0.65	Iphucula{0}}ubushushu obuphezulu amandla

IiMfuno zoomatshini
Ukuqina Kukhulu kuno okanye ukulingana nama 415 MPa • Isivuno sikhulu kuno okanye silingana nama 205 MPa • Ubude bukhulu kuno okanye bulingana nama 30 % • Ukuqina Ngaphantsi okanye bulingana ne 163 HBW

Ukwenziwa kunye noNyango loBushushu

Imibhobho ye-ASTM A335 P11 iveliswa yii-extrusion eshushu engenamthungo okanye umzobo obandayo, ukuqinisekisa i-microstructure elinganayo kunye nolawulo oluchanekileyo lwe-dimensional.
Isinyathelo ngasinye senkqubo yokuvelisa ibekwe esweni ngokusondeleyo ukugcina ukuhambelana kwe-metallurgical kunye nokunciphisa iziphene zangaphakathi.

Imveliso kunye nolandelelwano loLungiselelo

Ukufudumeza kweBillet kunye nokugqojozwa- Iibhilithi ze-alloy zifudunyezwa kwi-1100-1150℃kwaye zihlatywe kusetyenziswa iindlela ezijikelezayo ukwenza igobolondo elingenanto kunye nokuhamba kweenkozo ezifanayo.

UkuQeda okushushu okanye okubandayo-Imibhobho iqengqeleke okanye itsalwa kubunzima bokugqibela bodonga, ilandelwa kukupholisa komoya okanye ukulinganisa okuphakathi.

Uhlengahlengiso (940-980 degree)-Icoca iinkozo ze-ferritic, inyibilikisa i-carbides eyahluliweyo, kwaye iphucula ukufana kwamandla.

Ukufudumeza (675-755 degree)-Ikhulula uxinzelelo lwangaphakathi, ibuyisela i-ductility, kwaye izinzile i-carbide morphology yokumelana nokunyuka.

Ukuhlolwa kunye noVavanyo-Kubandakanya i-ultrasonic okanye i-eddy{0}i-NDT yangoku, iimvavanyo zoxinzelelo lwe-hydrostatic, ukuqinisekiswa kobulukhuni, kunye nomlinganiselo we-dimensional.

Olu nyango lobushushu -kabini luvelisa iintle-igrained ferrite{1}}carbide matrixexhathisa ukuqina kwaye igcine amandla omatshini ngexesha - lenkonzo yexesha elide.
Kwiinkqubo ezidityanisiweyo, -unyango lobushushu be-weld (PWHT) luqinisekisaukubuyiselwa kwe-microstructural kunye nokukhululeka koxinzelelo lwe-hydrogen, ibaluleke kakhulu kubushushu obuphezulu-kumsebenzi.

Uluhlu lweDimensional

Ipharamitha	Uluhlu oluqhelekileyo
Ngaphandle Ububanzi	12.7 – 610 mm (½ – 24 phakathi)
Ukutyeba kweendonga	1.2 - 100 mm
Ubude	Ukuya kuthi ga kwi-12 m (SRL / DRL / ubude bokusika)
OD Ukunyamezela	± 1 %
Unyamezelo lwe-WT	± 10 %
Ukuthe tye	Ngaphantsi kwe-0.8 mm / m

Ifumaneka kwiiziphelo ezicacileyo, ezibharhiweyo, okanye ezinemisontongokweemfuno zofakelo.

{{0}Ubushushu bokusebenza kunye nezicelo

Kumaqondo obushushu okusebenza asondelayoI-600 degree, ASTM A335 P11 ibonisa ibhalansi eyodwa phakathiukumelana ne-oxidation, ukuzinza kwe-thermal, kunye nokugcinwa koomatshini.
Ukwenziwa kwechromium eqhubekayo{0}}i-oksidi etyebileyo umaleko kunciphisa ukukala kunye nokulahleka kwesinyithi ngexesha lokuvezwa ixesha elide, ngelixa i-molybdenum inegaleloukugcinwa kwamandla kunye nokuxhathisa kwi-microvoid coalescence.

Le ngxubevange iqhuba kakuhle kakhulu kwindawo ephantsi kwayoUkuhamba ngebhayisekile eshushu, i-oxidation yomphunga, kunye nokutshintsha koxinzelelo, ukugcina ukuqina kunye nokunyaniseka kwe-weld.

Iinzuzo zokuSebenza

Ugcino lweCreep Strength:Ukunyaniseka okuthembekileyo kunye nokuchasana nokuqhekeka kumawaka eeyure zenkonzo.
Ukuxhathisa ukuFatigue kweThermal:I-Fine-grained microstructure inciphisa ukuqhekeka ukusuka kulwandiso{1}}kumjikelezo wokufinyela.
Ukwandiswa kobushushu obuphantsi:Uzinzo lweDimensional lugcina ulungelelwaniso lwe weld kwiinkqubo zemibhobho entsonkothileyo.
Ukhuseleko lomphezulu:Ifilimu ye-oxide ezinzileyo iqinisekisa ukubola okuncinci kunye nezihlandlo zokuhlola ezongeziweyo.

Usetyenziso

Isiveliso saMandla:Iityhubhu zebhoyila, iikhoyili ze-superheater, iiheda zokufudumeza.
IiRefineries & Petrochemical Plants:Inkqubo kunye nokudluliselwa kwemibhobho, iityhubhu zokuhlaziya.
Imizila yeNkqubo yoShishino:Ubuninzi bomphunga kunye{0}}neenkqubo zoxinzelelo oluphezulu lwamanzi.
Iinqanawa zoxinzelelo:Ngenkonzo-yexesha elide phantsi kobushushu kunye noxinzelelo lokuhamba ngebhayisikile.

Ukuhlolwa, uQinisekiso kunye noNikezo

Yonke imibhobho ye-P11 ivavanywa kwaye iqinisekisiwe ngokungqinelana neI-ASTM A335 / A999kwayeASME SA335 imigangatho.
Ukuhanjiswa ngakunye kukhatshwaIzatifikethi zoVavanyo lweMill (EN 10204 3.1 / 3.2), ukuqinisekisa ukulandeleka okupheleleyo kunye nokuthotyelwa.

Iiprothokholi zovavanyo ziquka:

Ukuhlolwa kwe-Ultrasonic okanye i-hydrostatic yesandi sodonga.
Ukuqina, ubulukhuni, ukuqina, kunye nokuqinisekisa ukugoba.
Ukhetho lweradiyografi okanye uvavanyo lwempembelelo ngokwenkcazo yeprojekthi.

I-Octal Pipe ibonelelainkxaso ebanzi ye-QA/QC, amaxwebhu eisiqinisekiso senkqubo yokuwelda (WPS/PQR), kunye nolungiselelo lwamazwe ngamazwe ukuqinisekisa unikezelo oluthembekileyo lwe-EPC kunye neeprojekthi zamandla kwihlabathi jikelele.

Qhagamshelana ngoku

FAQ

Q1: Yintoni umbhobho we-ASTM A335 P22 (ASME SA335 P22) osetyenziselwa ntoni?

A1:Ubushushu obuphezulu-,{1}}noxinzelelo oluphezulu lwenkonzo yemibhobho kwizixhobo zombane, iindawo zokucokisa, kunye neeyunithi zepetrochemical.

I-Q2: Ithetha ntoni i-"2.25Cr-1Mo" kwi-P22 chrome moly pipe?

A2:Ibhekisa kuyilo lwe-alloy (malunga ne-2.25% Cr + 1% Mo) ephucula ukunyathela kunye nokumelana ne-oxidation kumaqondo aphezulu aphezulu.

Q3: Loluphi unyango lobushushu olufunekayo ngokwesiqhelo kwi-ASTM A335 P22 umbhobho ongenamthungo?

A3:Ukulinganisa kunye nokufudumeza (N+T) ngobushushu obubhaliweyo{1}}iirekhodi zonyango.

I-Q4: Ndifanele ndikhethe nini i-P22 endaweni ye-P11 okanye i-P91?

A4:Khetha i-P22 njengomgangatho ophakathi-womgangatho ophezulu{2}}womsebenzi wobushushu kune-P11, ngelixa unqanda ulawulo olungqongqo kunye neendleko eziphezulu ezihlala zinxulunyaniswa ne-P91.

I-Q5: Ndimele ndicele ntoni ukuqinisekisa umgangatho wombhobho we-P22 ngaphambi kokuthenga?

A5:EN 10204 3.1/3.2 MTC ngokulandelelwa kobushushu, iziphumo zoomatshini/zekhemistri, ubulukhuni, kunye novavanyo lwe-hydrostatic okanye lwe-UT njengoko kuchaziwe.