ASTM B338 qib dab tsi npog rau cov raj kub hloov pauv?
ASTM B338 specification npog seamless thiab welded titanium alloy raj rau condensers thiab tshav kub exchangers. Cov qib hauv qab no muaj nyob rau hauv phau ntawv qhia no:
| Qib | Hom | Cov yam ntxwv tseem ceeb |
|---|---|---|
| Gr.1 | Tsis siv neeg titanium | Qhov siab tshaj plaws ductility, zoo tshaj plaws formability, zoo heev corrosion kuj |
| Gr.3 | Tsis siv neeg titanium | Lub zog siab dua Gr.1 thiab Gr.2 |
| Gr. 7 | Unalloyed + 0.12-0.25% Pd | Exceptional corrosion kuj nyob rau hauv txo acids |
| Gr. 9 | Ti (3% Al, 2.5% V) | Siab zog, zoo weldability |
| Gr.11 | Unalloyed + 0.12-0.25% Pd | Zoo ib yam li Gr.7 nrog kev sib txawv |
Cov qib no txawv ntawm cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab, tso cai rau ntau yam kev siv.gr1 titanium cevyog qib formable tshaj plaws ntawm lawv.
Cov tshuaj muaj pes tsawg leeg ntawm cov qib titanium no yog dab tsi?
| Qib | C | N | H | Fe | O |
|---|---|---|---|---|---|
| Gr.1 | 0.08 | 0.03 | 0.015 | 0.20 | 0.18 |
| Gr.3 | 0.08 | 0.05 | 0.015 | 0.30 | 0.35 |
| Gr. 7 | 0.08 | 0.03 | 0.015 | 0.30 | 0.25 |
| Gr. 9 | 0.08 | 0.03 | 0.015 | 0.25 | 0.15 |
| Gr.11 | 0.08 | 0.03 | 0.015 | 0.25 | 0.25 |
Dab tsi yog cov yam ntxwv ntawm ASTM B338 titanium raj?
| Qib | Tensile zog (MPa) | Yield zog (MPa) | Elongation (%) |
|---|---|---|---|
| Gr.1 | Ntau dua lossis sib npaug li 240 | Ntau dua lossis sib npaug li 170 | Ntau dua lossis sib npaug li 24 |
| Gr.3 | Ntau dua lossis sib npaug li 450 | Ntau dua lossis sib npaug rau 380 | Ntau dua lossis sib npaug li 18 |
| Gr. 7 | Ntau dua lossis sib npaug rau 345 | Ntau dua lossis sib npaug li 275 | Ntau dua lossis sib npaug li 20 |
| Gr. 9 | Ntau dua lossis sib npaug rau 620 | Ntau dua lossis sib npaug rau 483 | Ntau dua lossis sib npaug li 15 |
| Gr.11 | Ntau dua lossis sib npaug li 240 | Ntau dua lossis sib npaug li 170 | Ntau dua lossis sib npaug li 24 |
Qib 1 muaj lub zog qis tshaj tab sis siab tshaj ductility.Qib 1 titanium yield zogyog 170 MPa yam tsawg kawg nkaus, nrog 24% elongation. Qib 9 (3Al-2.5V) muaj lub zog siab tshaj plaws ntawm 620 MPa tensile.
Dab tsi yog cov yam ntxwv tseem ceeb ntawm cov titanium tshav kub exchanger raj?
| Feature | Cov txiaj ntsig |
|---|---|
| Zoo heev corrosion kuj | Withstands nruj tshuaj, dej hiav txwv, thiab acidic ib puag ncig |
| Siab zog - rau - hnyav piv | Lub teeb tsis tau muaj zog, txo cov khoom siv tag nrho qhov hnyav |
| Thermal stability | Khaws cov khoom ntawm qhov kub thiab txias |
| Kev hloov hluav taws xob zoo | Optimized rau condenser thiab tshav kub exchanger dej |
| Seamless kev tsim kho | Tsis muaj weld seam, tshem tawm cov ntsiab lus tsis ua haujlwm |
Cov kev lag luam twg siv ASTM B338 titanium raj?
| Kev lag luam | Daim ntawv thov |
|---|---|
| Kev ua tshuaj lom neeg | Thaum tshav kub kub exchangers rau corrosive tshuaj,gr1 titanium reactorcov khoom |
| Lub zog tiam | Condensers thiab cua sov exchangers nyob rau hauv lub fais fab nroj tsuag |
| Roj & Roj | Thaum tshav kub kub exchangers rau roj refining thiab gas processing |
| Aerospace | Aircraft heat exchangers thiab lwm yam aerospace systems |
| Tubrog nkoj | Thaum tshav kub kub exchangers rau seawater desalination thiab shipbuilding |
gr1 titanium rau kev ua tshuajmuab kev tiv thaiv zoo heev rau acid thiab alkali nres.gr1 titanium tshav kub exchangercov raj yog cov qauv xaiv rau kev siv dej hiav txwv thiab tshuaj lom neeg.
Dab tsi ua tau lwm qib rau cov titanium raj?
Thaum ASTM B338 Gr.1, Gr.3, Gr.7, Gr.9, thiab Gr.11 tau siv dav, lwm qib muaj rau cov ntawv thov tshwj xeeb:
| Alternative Qib | Qhov txawv |
|---|---|
| Gr.2 | Lub zog siab dua Gr.1 (275 MPa tawm los), qis dua ductility (20% elongation) |
| Gr. 12 | Muaj 0.3% Mo thiab 0.8% Ni rau kev txhim kho lub zog thiab corrosion kuj |
| Gr.16 | Unalloyed titanium nrog 0.04-0.08% palladium, zoo ib yam li Gr.7 tab sis qis palladium |
Xaivgr1 titanium cevThaum lub siab tshaj plaws formability yuav tsum tau. Xaiv Gr.7 lossis Gr.11 txhawm rau txhim kho corrosion kuj hauv kev txo cov kua qaub ib puag ncig. Xaiv Gr.9 rau siab - daim ntawv thov muaj zog.
ASTM B338 titanium raj tshuaj xyuas li cas?
| Kuaj | Kev piav qhia |
|---|---|
| Tshuaj ntsuam xyuas | Txheeb xyuastitanium qib 1 muaj pes tsawg leegthiab lwm yam qib rau ASTM |
| Kev Ntsuas Tensile | Paub meej tias cov khoom muaj zog, tensile zog, thiab elongation |
| Flattening Test | Raws li ASTM B338 rau raj ductility |
| Flaring Test | Raws li ASTM B338 rau lub raj muaj peev xwm nthuav dav |
| Kev kuaj ultrasonic (UT) | Rau seamless tubing |
| Eddy Current Testing (ET) | Rau welded tubing |
| Hydrostatic Test | Kev ntsuas siab raws li tus qauv |
| Dimensional soj ntsuam | Txheeb xyuas OD, phab ntsa thickness, thiab ntev |
ntim
| Txoj kev | Kev piav qhia |
|---|---|
| Tus kheej qhwv | Yas zaj duab xis lossis VCI ntawv nyob ib ncig ntawm txhua lub raj |
| Bundling | Hlau hlua nrog tiv thaiv padding |
| Ntoo thawv | Export- txheem plywood thawv |
| End caps | Cov kaus mom yas ntawm ob qhov kawg |
| Kev sau npe | Qib, kub tooj, loj, PO tooj |
FAQ
1. ASTM B338 yog dab tsi?
ASTM B338 yog tus qauv specification rau seamless thiab welded titanium thiab titanium alloy raj rau condensers thiab tshav kub exchangers. Nws suav nrog qib Gr.1, Gr.3, Gr.7, Gr.9, thiab Gr.11 rau kev siv thermal hloov mus.
2. Dab tsi yog qhov txawv ntawm Qib 1 thiab Qib 3 titanium raj?
Qib 1 muaj tensile lub zog ntawm 240 MPa thiab yield zog ntawm 170 MPa nrog 24% elongation. Qib 3 muaj zog tensile ntau dua ntawm 450 MPa thiab tawm lub zog ntawm 380 MPa tab sis qis elongation ntawm 18%. Xaiv Gr.1 rau kev sib sau thiab Gr.3 kom muaj zog dua.
3. Dab tsi yog qhov txawv ntawm Qib 7 thiab Qib 11 titanium raj?
Ob leeg muaj palladium (0.12-0.25%) rau kev txhim kho corrosion kuj hauv kev txo cov kua qaub. Qib 7 muaj tensile zog 345 MPa thiab tawm los 275 MPa. Qib 11 muaj tensile 240 MPa thiab tawm los 170 MPa, zoo ib yam li Qib 1 tab sis nrog palladium.
4. Qib 9 titanium raj siv rau dab tsi?
Qib 9 (3Al-2.5V) yog lub siab -titanium alloy nrog tensile lub zog ntawm 620 MPa thiab yield zog ntawm 483 MPa. Nws yog siv hauv aerospace hydraulic systems, aircraft heat exchangers, thiab high-pressure chemical processing equipment.
5. Cov kev lag luam twg siv ASTM B338 titanium raj?
Kev tsim tshuaj lom neeg, tsim hluav taws xob, roj thiab roj, aerospace, thiab marine industries. Cov ntawv thov tshwj xeeb suav nrog cov khoom siv hluav taws xob sib hloov rau cov tshuaj corrosive, lub zog cog condensers, roj refining, aircraft systems, thiab seawater desalination.
6. Cov qib sib npaug rau Qib 1 titanium raj yog dab tsi?
UNS R50250 thiab Werkstoff Nr. 3.7025 yog thawj qhov sib npaug. Qib 1 tseem hu ua kev lag luam ntshiab titanium nrog cov pa oxygen tsawg (0.18% max) thiab cov hlau tsis tshua muaj (0.20% max) rau qhov siab tshaj plaws ductility.
7. Dab tsi yog qhov txawv ntawm Qib 1 thiab Qib 2 titanium raj?
Qib 1 muaj lub zog qis zog (170 MPa vs 275 MPa) tab sis siab dua elongation (24% vs 20%). Qib 2 muaj zog dua tab sis tsawg formable. Ob leeg muaj zoo heev corrosion kuj. Xaiv Gr.1 rau khoov thiab sib sau; xaiv Gr.2 rau siab dua.
