Cov ntsiab lus ceev
ASTM A192 yog tus qauv tshwj xeeb rauSeamless Cov Hlau Hlau Boiler Tubes Rau Siab {0} Kev Pab Cuam SiabCov. Cov kav dej / cov hlua yog tsim los siv rau hauv high -}}}}}} pa roj, qhov kev ntseeg tau thiab kev hloov pauv kub yog qhov tseem ceeb.
1. Cov yam ntxwv tseem ceeb thiab kev siv
Kev Siv Thawj:Tube lauj kaub boiles, cov leeg superheatre, thiab cua sov kev ua pa tawm hauv cov khoom siv hluav taws xob, ua kom muaj kev sib luag.
Cov Cuab Yeej Tseem Ceeb:Zoo tshajKev Hloov Cua SovCov. Cov hlab yog tsim kom muaj cov nplua {{1} nplej microstructure uas ua kom zoo dua cua sov coom.
Kev Pab Cuam:Tsim rauhigh - qhov kev pab cuam siab, feem ntau nrog kev kub siab.
Txheej txheem tsim khoom: Tsis ntse(Tsis muaj welded seam), uas muab lub zog zoo dua thiab cov khaub ncaws zoo hauv siab piv rau welded hlab.
2. Tshuaj lom neeg sib xyaw
Tus qauv ntsuas txwv txwv kev txwv ntawm cov tshuaj lom neeg muaj pes tsawg leeg los xyuas kom meej cov khoom siv yam xav tau thiab weldability. Cov ntsiab tseem ceeb yog:
| Lub ntsiab | Muaj pes tsawg leeg (%) |
|---|---|
| Carbon (c) | 0.06 - 0.18% |
| Manganese (mn) | 0.27 - 0.63% |
| Phosphorus (p) | 0.035% max |
| Sulphur (s) | 0.035% max |
| Silicon (si) | Ntau dua los yog sib npaug rau 0.25% (ceeb toom: tsawg kawg yog teev) |
Nco tseg:Qhov tsawg kawg nkaus silicon cov ntsiab lus yog qhov tseem ceeb rau deoxidation thaum lub sij hawm steelmaking, uas ua rau cov hlau lub zog thiab qhov zoo.
3. Cov Khoom Siv Kho Tshuab
ASTM A192 cov leeg yuav tsum ua kom tau raws li cov khoom ntiag tug hauv qab no:
| Ntiag tug | Qhov toob kas |
|---|---|
| Lub zog tensile | 325 MPa (47,000 psi) yam tsawg kawg nkaus |
| Paib lub zog | 180 mpa (26,000 psi) yam tsawg kawg nkaus |
| Elongation | Qhov feem pua tsawg kawg uas txawv nrog lub raj ntawm phab ntsa tuab. Piv txwv li, nws yog 35% rau tus qauv phab ntsa tuab ntawm 2-nti cov hnoos qeev. |
4. Qhov chaw seem
Sab nraud ntawm lub taub (OD):Feem ntau yog li1/8 nti (10.3 hli)rau7 Nti (177.8 hli), Txawm hais tias feem ntau qhov ntau thiab tsawg yog diameer me me.
Phab Ntsa Thickness:Sau tseg los ntawm cov nominal phab ntsa lossis tsawg kawg nkaus phab ntsa tuab, feem ntau qhia hauv BWM (Birmingham xaim gauge) lossis nti / hli. Cov phab ntsa ib txwm raug xaiv raws li "sijhawm 40", "sijhawm 80", thiab lwm yam.
5. Kuaj thiab tshuaj xyuas
Txhawm rau kom muaj kev nyab xeeb thiab kev nyab xeeb, astm A192 kav dej uas yuav tsum tau ua ntau ntau:
Kaj ntsuam xyuas:Cov tshev Ductility los ntawm Flattening lub nplhaib ntawm lub raj rau qhov chaw nyob tsis muaj kev tawg.
Flange Kev Ntsuam Xyuas:Zoo ib yam li cov kev kuaj mob featening tab sis rau cov hlab uas yuav tsum tau flared.
Hydrostatic kev kuaj:Txhua lub raj raug sim ua kom muaj dej siab kom ntseeg tau tias nws tuaj yeem tuav siab yam tsis muaj kev txwv.
Tsis - Kev Ntsuas Hluav Taws Xob Destructive (NDE):Ib qho kev sim tshiab tam sim no lossis ultrasonic sim feem ntau ua los xyuas cov nplaim thiab cov khoom siv hauv qab.
Tshuaj lom neeg tshuaj thiab Tensile kuaj:Ua rau cov qauv los ntawm txhua qhov kub ntawm cov hlau.
6. Kev sib piv nrog lwm cov qauv
ASTM A192 feem ntau piv rau lwm cov neeg boiler raj txheem. Ntawm no yog li cas nws txawv:
vs. ASTM A106 GR. B (Seamless yeeb nkab rau high- kub kev pab):
A192yog tshwj xeeb rauBoiler Thiab Cov Ntawv Thov Hluav Taws Kub Kubqhov twg kub hloov yog qhov tseem ceeb. Nws muaj cov ntsiab lus cov roj carbon qis, ua rau nws haum ntau rau khoov thiab flaring.
A106 Gr. Byog dav dav - hom phiaj roj carbon steel yeeb nkab kev pabcuam siab rau high- cov tshuab kub (piv txwv li, cov tshuab ntsuas kub). Nws muaj ntau dua lub zog thiab tawm lub zog lub zog tab sis tsis yog qhov zoo rau tib qho kev hloov cua sov raws li A192.
vs. Astm A179 (Seamless Txias - lw} cov roj carbon steel sov- Pauv Ua Si):
Ob qho tib si yog rau kev sib pauv cua sov.A179yogtxias - Kos Duab, uas ua rau ib qho kev ua tiav smoother thiab ntau dua qhov tseeb, feem ntau siv hauv kev hloov cua sov thiab cov hws.
A192feem ntaukub -} ua tiavthiab muaj ntau yam nyob hauv cov ntawv thov boiler. A192 tau muaj cov kev yuav tsum tau muaj zog dua.
Ntsiab lus xaus
| Yam zoo | Kev tshwj xeeb rau ASTM A192 |
|---|---|
| Txheem Npe | Txheem Cov Qauv Tshwj Xeeb rau Seamless Cov Hlau Tsis Siv Hlau Boiler Hles Rau Siab {0} Kev pab cuam siab |
| Thawj siv | Tube Boiles, Qev Superheat |
| Teem nqi | Ib Leeg Qib (Cov Hlau Carbon) |
| Kev ua | Tsis ntse |
| Qhov tseem ceeb | Cov pa roj carbon (0.06-0.18%), min. Silicon (0.25%) |
| Lub zog tensile | Ntau dua los yog sib npaug rau 325 MPa (47,000 PSI) |
| Paib lub zog | Ntau dua los yog sib npaug rau 180 mpa (26,000 psi) |
Hauv kev xaus,ASTM A192 Seamless Hlau Yeeb Nkabyog ib qho tshwj xeeb, siab - cov khoom lag luam zoo rau kev nyab xeeb thiab ua tau zoo hauv qhov kev siv hluav taws kub tseem ceeb. Nws cov lus qhia tshwj xeeb yog ua tib zoo sib piv kom muab cov kub hloov cua sov zoo, muaj kev tsim nyog zoo, thiab muaj zog ntseeg tau.
