SA515 Qib 65yog cov pa roj carbon steel phaj teev los ntawm ASTM A515. Nws feem ntau yog siv rau cov hlab ntsha siab ua haujlwm ntawm qhov nruab nrab mus rau qhov kub siab, muab lub zog tensile zoo thiab weldability rau cov ntawv thov kev lag luam.
Cov cuab yeej cuab tam rau SA515 Qib 65 boiler steel phaj:
| Yield zog (Mpa) | Tensile zog (Mpa) | Elongation nyob rau hauv ntau dua los yog sib npaug rau ,% | |
| 240 | 450-585 | 200 hli | 50 hli |
| 19 | 23 | ||
Tshuaj muaj pes tsawg leeg rau SA515 Qib 65 boiler steel phaj (khoom soj ntsuam Max%)
| Cov ntsiab lus tseem ceeb ntawm A515 Qib 65 | |||||
| Thickness (hli) | C | Si | Mn | P | S |
| T Tsawg dua lossis sib npaug li 25 | 0.28 | 0.13-0.45 | 0.98 | 0.025 | 0.025 |
| 25<> | 0.31 | ||||
| 50<> | 0.33 | ||||
| 100<> | 0.33 | ||||
qhov zoo
1. Superior High -Tsuas Kub Stability
Creep Resistance: Nws coarse-grain austenitic qauv ua rau nws tsis yooj yim rau nkag (ntev- lub sij hawm deformation nyob rau hauv tshav kub) ntawm kub txog li 538℃(1000℃F).
Kev Tiv Thaiv Graphitization: Cov silicon-tua, ntxhib- kev xyaum ua qoob loo yuav pab txo qis kev pheej hmoo ntawm graphitization, txheej txheem uas cov hlau ua nkig dhau sijhawm vim cov pa roj carbon tawg ntawm qhov kub thiab txias.
2. Muaj zog thiab kav ntev
Kev Ua Haujlwm Zoo: Nrog lub zog tensile yam tsawg kawg nkaus ntawm 65 ksi (450 MPa), nws tuaj yeem tswj cov kev ntxhov siab thiab kev siab sab hauv yam tsis muaj deforming.
Qhov sib npaug ntawm Cov Khoom: Qib 65 ua rau qhov zoo tshaj plaws sib npaug ntawm qhov siab ntawm Qib 70 thiab siab dua ductility ntawm Qib 60, ua rau nws muaj ntau yam kev xaiv rau nruab nrab - mus rau - cov kev pabcuam kub.
3. Yooj yim ntawm Fabrication
Weldability zoo heev: Nws yog tsim tshwj xeeb rau welded boiler thiab siab hlab ntsha tsim thiab yog yooj yim weldable siv cov txheej txheem kev lag luam.
Kev ua haujlwm tau zoo: Cov khoom pov thawj zoo machinability thiab tuaj yeem tsim los ntawm kev khoov thiab txias - cov txheej txheem tsim.
4. Tus nqi -Kev ua tau zoo
Kev Lag Luam Tus Nqi: SA515 Qib 65 muab tus nqi - siv tau zoo rau cov haujlwm loj - xws li cov tso tsheb hlau luam thiab cov khoom siv hluav taws xob, muab kev cia siab ntev - lub sij hawm thiab txo kev txij nkawm.
SA515 Qib 65 kev ua haujlwm ntws
Ua ntej-Kev Ua Haujlwm & Cua sov
SA515 Qib 65 steel blanks pib nrog kev tshuaj xyuas cov ntaub ntawv nruj kom paub meej tias cov tshuaj muaj pes tsawg leeg thiab cov khoom siv tshuab ua ntej raws li ASME BPVC cov qauv. Ua ntej kub ua hauj lwm, cov blanks yog uniformly rhuab nyob rau hauv lub cub tawg rau 1100-1250 degree, nrog tuav lub sij hawm kho los ntawm phaj thickness (1-2 teev ib 50 hli) kom paub meej tag nrho austenitization, nteg lub hauv paus rau uniform microstructure tom qab dov thiab sib sau.
Kub Rolling & Forming
Rhaub blanks undergo kub dov mus rau lub hom phiaj thickness, nrog rolling passes tswj kom refine ferritic -pearlitic nplej thiab xyuas kom meej tensile lub zog (450-585 MPa) thoob plaws lub phaj. Tom qab kub sib sau (bending, shaping, forging) yog tua ntawm 900-1050 degree; tuab daim hlau rau cov hlab ntsha siab yuav tsum maj mam ua kom tsis txhob muaj kev ntxhov siab ntau dhau, thiab maj mam ua kom txias sai sai tom qab tsim tau los txo cov thermal residual kev nyuaj siab thiab tiv thaiv qhov pib tawg.
Txiav & Machining
Ua tiav ib nrab- cov khoom raug txiav los ntawm oxy- roj txiav (rau thickness Ntau dua los yog sib npaug rau 20mm, preheated rau 150-200℃kom tsis txhob ntug hardening) los yog plasma / laser txiav (rau tsawg dua los yog sib npaug rau 20mm, rau siab precision). Machining (drilling, milling, tig) siv carbide lossis siab -cov cuab yeej steel ceev nrog cov khoom noj nruab nrab thiab ceev; dej-raws li cov coolant tau siv tas li los tswj cov cua sov, tiv thaiv cov cuab yeej hnav thiab cov khoom siv ua haujlwm tawv, thiab ua kom qhov tseeb qhov tseeb ntawm cov hlab ntsha.
Kev kho cua sov & Nto tiav
Kev ntxhov siab annealing yog qhov tseem ceeb tshaj tawm - cov kauj ruam ua: rhuab mus rau 595-675 degree, tuav 1 teev ib 25mm thickness, ces cua-txias kom tshem tawm kev sib sau / machining kev nyuaj siab thiab txhim kho ductility (min 21% elongation). Cov npoo raug tua- blasted kom tshem tawm oxide nplai, ua raws li los ntawm kev tiv thaiv- txheej txheej. Tag nrho cov khoom tiav dhau los tsis yog{11}}kev kuaj kev puas tsuaj (ultrasonic, magnetic particle) txhawm rau txheeb xyuas cov teeb meem sab hauv / sab nraud, ua kom ntseeg tau tias ua raws li kev tsim cov hlab ntsha siab.
Thov kev tshaj lij rau SA515 Qib 65 los ntawm GNEE Steel.
Kev kho cua sov dab tsi yog siv rau SA515 Qib 65?
SA515 Qib 65 feem ntau yog muab nyob rau hauv raws li -rolled los yog normalized mob. Normalization (cua sov rau 899-954 degree, tom qab ntawd cua txias) txhim kho nws cov khoom siv kho tshuab, kev sib txig sib luag, thiab tawv tawv rau kev pabcuam lub nkoj.
SA515 Qib 65 puas tuaj yeem siv rau hauv cov ntawv thov cryogenic?
Tsis yog, SA515 Qib 65 tsis pom zoo rau cov ntawv thov cryogenic. Nws tsis muaj toughness txaus ntawm qhov kub thiab txias; cryogenic cov kev pab cuam yuav tsum tau tshwj xeeb cov ntaub ntawv xws li SA516 Qib 70 nrog tsawg-kub tej yam kuj.
Dab tsi yog qhov nyuaj ntawm SA515 Qib 65?
Qhov raug Brinell hardness (HB) ntau ntawm SA515 Qib 65 yog 137-187. Qhov hardness theem no sib npaug lub zog thiab ductility, kom ntseeg tau tias cov khoom tuaj yeem tiv taus siab yam tsis muaj qhov tsis ua haujlwm.
Dab tsi thicknesses muaj rau SA515 Qib 65 daim hlau?
SA515 Qib 65 daim hlau muaj nyob rau hauv thicknesses ntawm 6 hli mus rau 200 hli (0.24 nyob rau hauv rau 7.87 nyob rau hauv), nyob ntawm seb cov chaw tsim tshuaj paus muaj peev xwm. Cov phaj tuab tuaj yeem xav tau kev kho cua sov ntxiv rau qhov sib xws.
Dab tsi yog qhov yuav tsum tau elongation rau SA515 Qib 65?
SA515 Qib 65 yuav tsum muaj qhov tsawg kawg nkaus elongation ntawm 21% hauv 50 hli (2 hauv) ntsuas qhov ntev. Qhov no elongation ua kom zoo ductility, tso cai rau cov khoom kom deform plastically ua ntej tawg nyob rau hauv kev ntxhov siab.
Puas yog SA515 Qib 65 tiv taus corrosion?
SA515 Qib 65 muaj qhov nruab nrab corrosion kuj nyob rau hauv ib puag ncig me me. Rau cov mob hnyav (piv txwv li, acidic, saline), nws yuav tsum muaj cov txheej txheem tiv thaiv los yog cov ntaub thaiv kom tsis txhob degradation.
Cov kev xeem twg siv rau SA515 Qib 65?
Cov kev sim ntau rau SA515 Qib 65 suav nrog kev ntsuas tensile, kuaj khoov, kuaj qhov cuam tshuam (Charpy V-notch), tshuaj ntsuam xyuas, thiab kuaj ultrasonic (UT) kom ua tau raws li ASTM A515 cov qauv.
Charpy cuam tshuam lub zog xav tau rau SA515 Qib 65 yog dab tsi?
Nyob rau hauv chav tsev kub, SA515 Qib 65 yuav tsum muaj qhov tsawg kawg nkaus Charpy V-notch cuam tshuam lub zog ntawm 27 J (20 ft-lb). Rau qhov ntsuas kub qis dua, cov kev xav tau ntxiv tuaj yeem siv raws li kev thov tshwj xeeb.
SA515 Qib 65 puas tuaj yeem ua tau yooj yim?
Yog lawm, SA515 Qib 65 muaj kev ua haujlwm zoo. Nws tuaj yeem tig, milled, drilled, thiab hauv av siv cov cuab yeej txiav thiab cov txheej txheem, txawm tias cov cuab yeej tsim nyog thiab kev nrawm raug pom zoo rau cov txiaj ntsig zoo.
Dab tsi yog qhov ceev ntawm SA515 Qib 65?
Qhov ceev ntawm SA515 Qib 65 yog kwv yees li 7.85 g / cm³ (0.283 lb / in³), tib yam li cov pa roj carbon steel. Qhov ntom ntom no yog siv rau kev ntsuas qhov hnyav hauv lub nkoj siab thiab cov qauv tsim.