ASTM A335 P91, kuj hu uaASME SA335 P91, yog cov yeeb nkab hlau ferritic alloy seamless rau kev pabcuam kub siab, UNS No. K91560.
Nws muaj qhov tsawg kawg nkauslub zog tensile ntawm 585 MPa(85 ksi) thiab yam tsawg kawg nkauslub zog tawm los ntawm 415 MPa(60 ksi).
P91feem ntau muaj cov khoom sib xyaw xws li chromium thiab molybdenum, thiab ntau yam ntawm lwm cov khoom sib xyaw ntxiv, uas yog rauhlau alloy siab, yog li nws muaj lub zog super thiab kev tiv thaiv corrosion zoo heev.
Ntxiv rau, P91 muaj ob hom,Hom 1thiabHom 2, thiab feem ntau siv rau hauv cov chaw tsim hluav taws xob, cov chaw ua kom huv, cov khoom siv tseem ceeb ntawm cov chaw siv tshuaj lom neeg, thiab cov kav dej hauv qhov kub thiab txias thiab siab.
P91 steel yeeb nkab yog muab faib ua ob hom, Hom 1 thiab Hom 2.
Ob hom no zoo ib yam li cov khoom siv kho tshuab thiab lwm yam kev xav tau xws li kev kho cua sov,nrog me ntsis sib txawv hauv cov tshuaj lom neeg sib xyaw thiab kev tsom mus rau daim ntawv thov tshwj xeeb.
Cov tshuaj lom neeg muaj pes tsawg leegPiv rau Hom 1, cov tshuaj lom neeg ntawm Hom 2 yog nruj dua thiab muaj ntau cov khoom sib xyaw ua ke los muab kev tiv thaiv cua sov thiab xeb zoo dua.
Cov ntawv thovVim yog cov tshuaj lom neeg zoo tshaj plaws, Hom 2 yog qhov tsim nyog dua rau qhov kub thiab txias heev lossis qhov chaw muaj xeb ntau dua, lossis hauv cov ntawv thov uas xav tau lub zog thiab kev ua haujlwm ntev dua.
ASTM A335 cov yeeb nkab hlau yuav tsum yogtsis muaj qhov tsis sib xws.
Cov txheej txheem tsim khoom tsis muaj kev sib txuas yog muab faib ua pawgkub tiavthiabtxias kos.
Hauv qab no yog daim duab qhia txog cov txheej txheem kub tiav.
Tshwj xeeb, P91, cov yeeb nkab hlau uas muaj cov hlau sib xyaw ua ke, uas feem ntau siv rau hauv qhov chaw kub thiab siab, cov yeeb nkab hlau tsis muaj qhov sib xyaw ua ke thiab tuaj yeem ua rau phab ntsa tuab, yog li ua kom muaj kev nyab xeeb dua thiab siv nyiaj tau zoo dua.
P91 Txhua lub kav dej yuav tsum tau kho cua sov kom zoo dua qub rau cov qauv me me ntawm lub kav dej, txhim kho nws cov khoom siv kho tshuab, thiab txhim kho kev tiv thaiv rau qhov kub thiab txias siab.
| Qib | Hom Kho Mob Kub | Kev Ua Kom Kub thiab Txias Zoo Li Qub | Kub Kub |
| P91 Hom 1 thiab Hom 2 | normalizes thiab ua kom lub siab tus los yog | 1900 - 1975 ℉ [1040 - 1080 ℃] | 1350 ~ 1470 ℉ [730 - 800 ℃] |
| ua kom lub siab tus thiab qaug zog | 1900 - 1975 ℉ [1040 - 1080 ℃] | 1350 - 1470 ℉ [730 - 800 ℃] |
P91 Hom 1 Cov Cheebtsam Tshuaj
| Qib | Cov khoom xyaw,% | ||||||
| P91 Hom 1 | C | Mn | P | S | Si | Cr | Mo |
| 0.08 - 0.12 | 0.30 - 0.60 | 0.020 siab tshaj plaws | 0.010 siab tshaj plaws | 0.20 - 0.50 | 8.00 - 9.50 | 0.85 - 1.05 | |
| V | N | Ni | Al | Nb | Ti | Zr | |
| 0.18 - 0.25 | 0.030 - 0.070 | 0.40 siab tshaj | 0.02 siab tshaj | 0.06 - 0.10 | 0.01 siab tshaj | 0.01 siab tshaj | |
P91 Hom 2 Cov Cheebtsam Tshuaj
| Qib | Cov khoom xyaw,% | ||||||
| P91 Hom 2 Cov Khoom Siv Tshuaj Lom Zem | C | Mn | P | S | Si | Cr | Mo |
| 0.07 - 0.13 | 0.30 - 0.50 | 0.020 siab tshaj plaws | 0.005 siab tshaj | 0.20 - 0.40 | 8.00 - 9.50 | 0.80 - 1.05 | |
| V | Ni | Al | N | N/Al piv | Nb | Ti | |
| 0.16 - 0.27 | 0.20 siab tshaj | 0.02 siab tshaj | 0.035 - 0.070 | ≥ 4.0 | 0.05 - 0.11 | 0.01 siab tshaj | |
| Zr | Sn | Sb | As | B | W | Cu | |
| 0.01 siab tshaj | 0.01 siab tshaj | 0.003 siab tshaj | 0.01 siab tshaj | 0.001 siab tshaj | 0.05 siab tshaj | 0.10 siab tshaj | |
Nrog ob daim duab saum toj no, nws yooj yim pom qhov sib txawv ntawm Hom 1 thiab Hom 2 cov tshuaj lom neeg thiab cov kev txwv.
1. Khoom Siv Tensile
Qhov kev sim tensile feem ntau yog siv los ntsuas qhovlub zog tawm los, lub zog tensile, thiabkev ncabn ntawm cov yeeb nkab hlau sim kev pab cuam, thiab yog dav siv nyob rau hauv cov khoom siv ntawm qhov kev xeem.
| P91 Hom 1 thiab Hom 2 | |||
| Lub zog tensile | 85 ksi [585 MPa] feeb | ||
| Lub zog tawm los | 60 ksi [415 MPa] feeb | ||
| Kev ntev | Cov Kev Cai Ntev | Ntev ntev | Txoj kab hla |
| Kev ntev hauv 2 nti lossis 50 hli, (lossis 4D), feeb,%; Qhov ntev tsawg kawg nkaus rau phab ntsa 6 nti [8 hli] thiab ntau dua hauv qhov tuab, kev sim kab txaij, thiab rau txhua qhov me me uas tau sim hauv seem tag nrho | 20 | — | |
| Thaum siv tus qauv puag ncig 2-nti lossis 50-hli gage ntev lossis cov qauv me dua nrog qhov ntev gage sib npaug rau 4D (4 npaug ntawm txoj kab uas hla) | 20 | 13 | |
| Rau kev sim kab txaij, yuav tsum txiav tawm rau txhua qhov txo qis 1/32 nti [0.8 hli] ntawm phab ntsa tuab hauv qab 5/16 nti [8 hli] los ntawm qhov ntev tsawg kawg nkaus ntawm cov feem pua hauv qab no. | 1 | — | |
2. Qhov nyuaj
Muaj ntau txoj kev ntsuas qhov nyuaj siv tau, suav nrog Vickers, Brinell, thiab Rockwell.
| Qib | Brinell | Vickers | Rockwell |
| P91 Hom 1 thiab Hom 2 | 190 - 250 HBW | 196 - 265 HV | 91 HRBW - 25HRC |
Phab ntsa tuab <0.065 nti [1.7 hli]: Tsis tas yuav kuaj qhov nyuaj;
0.065 nti [1.7 hli] ≤ phab ntsa tuab <0.200 nti [5.1 hli]: Yuav tsum siv qhov kev sim Rockwell hardness;
Phab ntsa tuab ≥ 0.200 hauv. [5.1 hli]: xaiv tau siv Brinell hardness test lossis Rockwell hardness test.
Qhov kev xeem Vickers hardness siv tau rau txhua phab ntsa tuab ntawm cov kav dej. Txoj kev xeem no yog ua raws li cov kev cai ntawm E92.
3. Kev Ntsuas Kom Sib Nqus
Cov kev sim yuav tsum tau ua raws li Tshooj 20 ntawm ASTM A999 tus qauv.
4. Kev Ntsuas Khoov
Khoov 180° ntawm chav tsev kub, yuav tsis muaj kab nrib pleb tshwm sim rau sab nraud ntawm qhov khoov.
Loj> NPS25 lossis D / t ≥ 7.0: Kev sim khoov yuav tsum tau ua yam tsis muaj kev sim flattening.
5. P91 Cov Kev Pab Cuam Sim Xaiv Tau
Cov khoom sim hauv qab no tsis yog cov khoom sim uas yuav tsum tau ua, yog tias tsim nyog tuaj yeem txiav txim siab los ntawm kev sib tham.
S1: Kev Tshawb Fawb Txog Khoom
S3: Kev Ntsuas Kom Sib Nqus
S4: Kev Ntsuas Cov Qauv Hlau thiab Kev Txiav Txim Siab
S5: Cov Duab Micrographs
S6: Cov Duab Micrographs rau Cov Khoom Ib Leeg
S7: Kev Kho Mob Kub Lwm Hom-Qib P91 Hom 1 thiab Hom 2
Qhov kev sim dej P91 yuav tsum ua raws li cov kev cai hauv qab no.
Sab nraud txoj kab uas hla > 10 nti [250 hli] thiab phab ntsa tuab ≤ 0.75 nti [19 hli]: qhov no yuav tsum yog qhov kev sim hydrostatic.
Lwm qhov ntau thiab tsawg rau kev sim hluav taws xob uas tsis ua puas tsuaj.
Rau cov hlau ferritic alloy thiab cov kav hlau stainless hlau, phab ntsa raug rau qhov siab tsis tsawg dua60% ntawm qhov tsawg kawg nkaus ntawm lub zog tso zis.
Lub zog kuaj hydro yuav tsum tau tswj hwm tsawg kawg 5stsis muaj qhov xau lossis lwm yam tsis zoo.
Kev siab hydraulictuaj yeem suav nrog siv cov qauv:
P = 2St/D
P = qhov siab ntawm kev sim hydrostatic hauv psi [MPa];
S = kev ntxhov siab ntawm phab ntsa yeeb nkab hauv psi lossis [MPa];
t = qhov tuab ntawm phab ntsa uas tau teev tseg, qhov tuab ntawm phab ntsa raws li tus lej teem sijhawm ANSI uas tau teev tseg lossis 1.143 npaug ntawm qhov tuab tsawg kawg nkaus ntawm phab ntsa uas tau teev tseg, hauv. [hli];
D = txoj kab uas hla sab nraud uas tau teev tseg, txoj kab uas hla sab nraud uas sib raug rau qhov loj ntawm cov yeeb nkab ANSI uas tau teev tseg, lossis txoj kab uas hla sab nraud uas tau suav los ntawm kev ntxiv 2t (raws li tau txhais saum toj no) rau txoj kab uas hla sab hauv uas tau teev tseg, hauv. [mm].
Cov yeeb nkab P91 raug tshuaj xyuas los ntawm txoj kev xeem E213. Tus qauv E213 feem ntau yog txhawj xeeb txog kev kuaj ultrasonic (UT).
Yog tias tau teev tseg tshwj xeeb hauv daim ntawv xaj, nws kuj tseem tuaj yeem kuaj xyuas raws li txoj kev xeem E309 lossis E570.
Tus qauv E309 feem ntau cuam tshuam nrog kev tshuaj xyuas electromagnetic (eddy current), thaum E570 yog ib txoj kev tshuaj xyuas uas cuam tshuam nrog eddy current arrays.
Kev Hloov Pauv Tau Hauv Txoj Kab uas hla
Rau cov yeeb nkab uas tau xaj kom uasab hauv txoj kab uas hla, sab hauv txoj kab uas hla yuav tsum tsis txhob txawv ntau dua ± 1% ntawm sab hauv txoj kab uas hla uas tau teev tseg.
Cov tubing tau xaj rau hauvNPS [DN] lossis sab nraud diametersyuav tsum tsis txhob hloov cov kab uas hla sab nraud ntau dua li teev tseg hauv cov lus hauv qab no.
Kev Hloov Pauv Uas Tso Cai Hauv Phab Ntsa Thickness
Kev ntsuas qhov tuab ntawm phab ntsa yuav tsum tau ua los ntawm kev siv cov cuab yeej ntsuas lossis cov cuab yeej ntsuas uas tsis ua puas tsuaj uas tau ntsuas kom raug thiab raug. Yog tias muaj kev tsis sib haum xeeb, kev ntsuas uas txiav txim siab los ntawm kev siv cov cuab yeej ntsuas yuav tsum tau ua ntej.
Qhov tsawg kawg nkaus ntawm phab ntsa tuab thiab sab nraud txoj kab uas hla rau kev tshuaj xyuas kom ua raws li qhov yuav tsum tau ua no rau cov yeeb nkab uas NPS [DN] xaj thiab tus lej teem sijhawm tau qhia hauvASME B36.10M.
Qhov tsis zoo
Qhov tsis zoo ntawm qhov chaw raug suav hais tias yog qhov tsis zoo yog tias lawv tshaj 12.5% ntawm qhov tuab ntawm phab ntsa nominal lossis tshaj qhov tuab ntawm phab ntsa tsawg kawg nkaus.
Qhov tsis zoo tag nrho
Cov cim kho tshuab, cov qhov khawb, thiab cov qhov me me, txhua qhov tsis zoo uas tob dua 1/16 nti [1.6 hli].
Cov cim thiab cov qhov khawb yog txhais tias yog cov cim cable, dinges, cov cim qhia, cov cim dov, cov khawb pob, cov qhab nia, cov cim tuag, thiab lwm yam.
Kho
Cov qhov tsis zoo yuav raug tshem tawm los ntawm kev sib tsoo, muab tias qhov tuab ntawm phab ntsa seem tsis tsawg dua qhov tuab ntawm phab ntsa tsawg kawg nkaus.
Kev kho kuj tseem tuaj yeem ua tau los ntawm kev vuam tab sis yuav tsum ua raws li cov kev cai ntawm A999.
Txhua qhov kev vuam kho hauv P91 yuav tsum tau ua nrog ib qho ntawm cov txheej txheem vuam thiab cov khoom siv hauv qab no: SMAW, A5.5/A5.5M E90XX-B9:SAW, A5.23/A5.23M EB9 + neutral flux; GTAW, A5.28/A5.28M ER90S-B9; thiab FCAW A5.29/A5.29M E91TI-B9. Tsis tas li ntawd, qhov sib npaug ntawm Ni + Mn cov ntsiab lus ntawm txhua qhov kev vuam khoom siv siv los kho P91 Hom 1 thiab Hom 2 yuav tsum tsis pub tshaj 1.0%.
Cov yeeb nkab P91 yuav tsum tau kho cua sov ntawm 1350-1470 ° F [730-800 ° C] tom qab kho qhov vuam.
Qhov chaw sab nraud ntawm cov yeeb nkab hlau uas tau kuaj xyuas yuav tsum muaj cov ntsiab lus hauv qab no:
Lub npe ntawm cov chaw tsim khoom lossis cov cim lag luam; tus lej txheem; qib; qhov ntev thiab cov cim ntxiv "S".
Cov cim rau hydrostatic pressure thiab non-destructive testing hauv lub rooj hauv qab no yuav tsum tau suav nrog.
Yog tias cov yeeb nkab raug kho los ntawm kev vuam, nws yuav tsum tau cim "WR".
p91 Yuav tsum qhia hom (Hom 1 lossis Hom 2).
| ASME | ASTM | EN | GB |
| ASME SA335 P91 | ASTM A213 T91 | EN 10216-2 X10CrMoVNb9-1 | GB/T 5310 10Cr9Mo1VNbN |
Khoom sivl: ASTM A335 P91 seamless hlau yeeb nkab;
OD: 1/8"- 24";
WT: raws liASME B36.10cov cai;
Teem sijhawmSCH10, SCH20, SCH30,SCH40, SCH60,SCH80, SCH100, SCH120, SCH140 thiab SCH160;
Kev txheeb xyuas:STD (tus qauv), XS (muaj zog heev), lossis XXS (ob npaug muaj zog heev);
Kev Kho Kom Haum: Cov yeeb nkab loj uas tsis yog tus qauv kuj muaj, cov qhov loj uas hloov kho tau raws li qhov xav tau;
Ntev: Qhov ntev tshwj xeeb thiab random;
Daim Ntawv Pov Thawj IBRPeb tuaj yeem tiv tauj lub koom haum tshuaj xyuas thib peb kom tau txais daim ntawv pov thawj IBR raws li koj xav tau, peb cov koom haum tshuaj xyuas kev koom tes yog BV, SGS, TUV, thiab lwm yam.
Xaus: Qhov kawg tiaj tus, beveled, lossis composite yeeb nkab kawg;
Nto: Cov yeeb nkab teeb, xim, thiab lwm yam kev tiv thaiv ib ntus, tshem tawm xeb thiab polishing, galvanized thiab yas coated, thiab lwm yam kev tiv thaiv mus sij hawm ntev;
Ntim khoom: Rooj ntoo, siv hlau los yog hlau hlau ntim, yas los yog hlau yeeb nkab kawg tiv thaiv, thiab lwm yam.
