ASTM A312 (ASME SA312) yog tus qauv siv dav dav rau cov kav dej hlau tsis xeb, suav nrog cov yeeb nkab tsis muaj qhov sib txuas, vuam, thiab cov yeeb nkab ua haujlwm txias heev. Nws feem ntau siv rau hauv qhov kub siab thiab qhov chaw ua haujlwm corrosive dav dav. Tus qauv suav nrog ntau qib hlau tsis xeb kom tau raws li cov kev xav tau sib txawv, nrog rau cov qib ib txwm muaj xws liTP304 (S30400), TP316 (S31600), TP304L (S30403), thiabTP316L (S31603).
Ua ib tug kws tshaj lij thiab txhim khu kev qha stainless hlau yeeb nkab tsum nyob rau hauv Suav teb,Botop HlauPeb cog lus tias yuav muab cov yeeb nkab stainless hlau zoo nrog tus nqi sib tw thiab xa khoom sai rau koj cov haujlwm. Tiv tauj peb kom tau txais kev txhawb nqa los ntawm peb pab neeg uas muaj kev paub dhau los.
Cov khoom siv uas tau muab raws li ASTM A312 yuav tsum ua raws li cov kev cai ntawm tsab ntawv tam sim no ntawmASTM A999tshwj tsis yog tias muaj lwm yam hais hauv no.
Cov kev cai xws li cov tshuaj lom neeg sib xyaw, cov khoom siv kho tshuab, kev sim hydrostatic, kev sim tsis ua puas tsuaj, thiab kev kam rau siab ntawm qhov ntev yuav tsum ua raws li cov kev cai ntawm A999.
Txhua qib hauv ASTM A312 yog cov hlau tsis xeb, yog li ntawd lawv cov tshuaj lom neeg muaj cov chromium (Cr) thiab nickel (Ni) ntau heev kom ntseeg tau tias muaj kev tiv thaiv corrosion, lub zog kub siab, thiab kev ua haujlwm ntev hauv ntau yam kev pabcuam.
| Qib | Cov khoom xyaw,% | |||||||
| C | Mn | P | S | Si | Cr | Ni | Mo | |
| TP304 | 0.08 siab tshaj | siab tshaj 2.00 | 0.045 siab tshaj | 0.030 siab tshaj plaws | siab tshaj 1.00 | 18.00 ~ 20.00 | 8.0 ~ 11.0 | — |
| TP304L | 0.035 siab tshaj | siab tshaj 2.00 | 0.045 siab tshaj | 0.030 siab tshaj plaws | siab tshaj 1.00 | 18.00 ~ 20.00 | 8.0 ~ 13.0 | — |
| TP316 | 0.08 siab tshaj | siab tshaj 2.00 | 0.045 siab tshaj | 0.030 siab tshaj plaws | siab tshaj 1.00 | 16.00 ~ 18.00 | 11.0 ~ 14.0 | 2.0 ~ 3.0 |
| TP316L | 0.035 siab tshaj | siab tshaj 2.00 | 0.045 siab tshaj | 0.030 siab tshaj plaws | siab tshaj 1.00 | 16.00 ~ 18.00 | 11.0 ~ 14.0 | 2.0 ~ 3.0 |
Rau cov yeeb nkab TP316 uas tau vuam, cov nickel (Ni) yuav tsum yog 10.0 txog 14.0%.
| Cov Khoom Siv Kho Tshuab | TP304 / TP316 | TP304L / TP316L | |
| Cov Kev Xav Tau Tensile | Lub zog tensile | 75 ksi [515 MPa] feeb | 70 ksi [485 MPa] feeb |
| Lub Zog Tawm | 30 ksi [205 MPa] feeb | 25 ksi [170 MPa] feeb | |
| Kev ntev hauv 2 nti los yog 50 hli | Ntev: 35% feeb Transverse: 25% feeb | ||
| Kev Ntsuas Kom Sib Nqus | Kev ntsuam xyuas kom tiaj tus yuav tsum tau ua rau 5% ntawm cov kav dej los ntawm txhua qhov chaw kho cua sov. | ||
| Kev Ntsuas Kev Sib Tsoo Weld | Qhov piv ntawm cov hlau vuam rau cov hlau puag poob yuav tsum yog 0.90 txog 1.1. (Qhov kev sim no tsis tas yuav tsum tau ua tshwj tsis yog tias tau teev tseg hauv daim ntawv xaj yuav khoom) | ||
Thaum twg qhov kev ntsuam xyuas cuam tshuam rau ib qhokev pabcuam kub qisyog 15 ft-lbf (20 J) lub zog nqus lossis 15 mils [0.38 mm] kev nthuav dav sab, qib TP304 thiab TP304L raug lees txais los ntawm ASME Pressure Vessel Code, Seem VIII, Division 1, thiab los ntawm Chemical Plant thiab Refinery Piping Code, ANSI B31.3, rau kev pabcuam ntawm qhov kub qis li -425 ° F [-250 ° C] yam tsis muaj kev tsim nyog los ntawm kev sim cuam tshuam.
Lwm cov qib AISI stainless hlau feem ntau raug lees txais rau qhov kub thiab txias qis li -325 ° F [-200 ° C] yam tsis muaj kev sim cuam tshuam.
Cov Txheej Txheem Tsim Khoom
Cov kav dej ASTM A312 TP304, TP316, TP304L, thiab TP316L tuaj yeem tsim tau los ntawm peb txoj kev:tsis muaj qhov tsis sib xws(ME), txheej txheem vuam tsis siv neeg (WLD), thiabua haujlwm txias heev (HCW), thiab tuaj yeem ua tiav kub lossis txias raws li qhov xav tau.
Txawm yog txoj kev vuam li cas los xij, yuav tsum tsis txhob ntxiv cov hlau ntxiv thaum lub sijhawm vuam.
Cov yeeb nkab vuam thiab cov yeeb nkab HCW ntawm NPS 14 thiab me dua yuav tsum muaj ib qho vuam ntev. Cov yeeb nkab vuam thiab cov yeeb nkab HCW ntawm qhov loj dua NPS 14 yuav tsum muaj ib qho vuam ntev lossis yuav tsum tsim los ntawm kev tsim thiab vuam ob ntu ntev ntawm cov khoom tiaj tus thaum tus neeg yuav khoom pom zoo. Txhua qhov kev sim vuam, kev kuaj xyuas, kev tshuaj xyuas, lossis kev kho mob yuav tsum tau ua rau txhua qhov vuam.
Kev Kho Mob Kub
Txhua cov kav dej hlau ASTM A312 yuav tsum tau muab kev kho cua sov.
Cov txheej txheem kho cua sov rau TP304, TP316, TP304L, thiab TP316L yuav tsum suav nrog kev ua kom cov yeeb nkab kub txog li 1900°F (1040°C) thiab tua hauv dej lossis txias sai sai los ntawm lwm txoj kev.
Qhov txias yuav tsum txaus kom tiv thaiv tau carbide reprecipitation thiab tuaj yeem txheeb xyuas tau los ntawm lub peev xwm dhau ASTM A262, Xyaum E.
Rau cov kav dej A312 seamless, tam sim ntawd tom qab kub tsim, thaum qhov kub ntawm cov kav dej tsis tsawg dua qhov kub tsawg kawg nkaus uas tau teev tseg, txhua cov kav dej yuav tsum tau quenched hauv dej lossis txias sai sai los ntawm lwm txoj kev.
Txhua lub yeeb nkab yuav tsum raug kuaj hluav taws xob tsis puas tsuaj lossis kuaj hydrostatic. Hom kev kuaj uas yuav siv yuav yog nyob ntawm tus neeg tsim khoom xaiv, tshwj tsis yog tias tau teev tseg lwm yam hauv daim ntawv xaj yuav khoom.
Cov txheej txheem sim yuav tsum tau ua raws li cov kev cai ntawm ASTM A999.
Rau cov kav dej uas muaj cov khoom sib npaug lossis loj dua NPS 10, kev sim lub kaw lus yuav siv tau es tsis txhob sim hydrostatic. Yog tias tsis ua kev sim hydrostatic, lub cim yuav tsum muaj "NH".
Cov kav dej tiav lawm yuav tsum ncaj nraim thiab yuav tsum zoo li tus neeg ua haujlwm tiav.
Cov yeeb nkab yuav tsum tsis muaj nplai thiab muaj cov hlau sab nraud uas ua rau muaj kuab paug. Kev siv tshuaj pickling, blasting, lossis kev ua kom tiav ntawm qhov chaw tsis yog qhov yuav tsum tau ua thaum cov yeeb nkab tau ci ntsa iab. Tus neeg yuav khoom raug tso cai kom yuav tsum tau siv tshuaj passivating rau cov yeeb nkab tiav.
Kev tshem tawm cov qhov tsis zoo los ntawm kev sib tsoo yog tso cai, muab tias cov phab ntsa tuab tsis txo qis dua qhov tso cai hauv Tshooj 9 ntawm ASTM A999.
| Tus Neeg Tsim NPS | Kev kam rau siab,% daim ntawv Nominal | |
| Dhau | Nyob rau hauv qab | |
| 1/8 txog 2 1/2 suav nrog, txhua qhov piv ntawm t/D | 20.0 | 12.5 |
| 3 txog 18 suav nrog t/D txog li 5% suav nrog. | 22.5 | 12.5 |
| 3 txog 18 suav nrog t/D > 5% | 15.0 | 12.5 |
| 20 thiab loj dua, vuam, tag nrho cov t/D piv | 17.5 | 12.5 |
| 20 thiab loj dua, tsis muaj qhov sib txuas, t/D txog li 5% suav nrog. | 22.5 | 12.5 |
| 20 thiab loj dua, tsis muaj qhov sib txuas, t/D > 5% | 15.0 | 12.5 |
t = Nominal Phab Ntsa Thickness; D = Kev Txiav Txim Sab Nraud Txoj Kab uas hla.
Botop Steel muab ntau txoj kev xaiv ntim khoom rau koj cov haujlwm, xws li los ntawm kev ntim khoom hauv hnab woven thiab ntim hnab yas mus rau kev ntim khoom ntoo, kom ntseeg tau tias muaj kev nyab xeeb, kev tiv thaiv thaum thauj mus los, thiab kev ua raws li cov cai ntawm qhov project.
Khoom siv:ASTM A312 cov kav dej hlau tsis xeb thiab cov khoom siv;
Qib:TP304, TP316, TP304L, thiab TP316L
Loj:1/8 "txog 30", lossis kho raws li koj xav tau;
Ntev:Qhov ntev random lossis txiav kom txiav txim;
Ntim:Cov hnab ntaub, cov hnab yas, cov thawv ntoo, thiab lwm yam.
Kev Txhawb Nqa:EXW, FOB, CIF, CFR;
MOQ:1 m;
Cov nqe lus them nqi:T/T los yog L/C;
Nqe:Tiv tauj peb kom paub cov nqi tshiab kawg.
