ASTM B338 Txuj yog dab tsi?
ASTM B338 / ASME SB338 tus qauv tshwj xeeb suav nrog seamless thiab welded titanium thiab titanium alloy tubes npaj rau deg condensers, evaporators, heat exchangers, thiab zoo xws li cov cua sov- hloov khoom siv.Nws tsis yog qhov dav dav - lub hom phiaj piping tus qauv (uas yuav yog ASTM B861). Qhov kev sib txawv no yog qhov tseem ceeb rau cov engineers.
Tus qauv txiav txim txhua yam los ntawm kev tso cai tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab mus rau qhov ntev ntev thiab yuav tsum tsis muaj - kev sim ua kom puas tsuaj. Nws siv rau ntau qib titanium, tab sisQib 2 (UNS R50400)yog tus neeg ua haujlwm rau feem coob ntawm kev lag luam cua txias thiab cov txheej txheem cua sov daim ntawv thov vim nws qhov kev sib npaug ntawm cov nqi, kev tiv thaiv corrosion, thiab fabricability.
Kev ua haujlwm ntawm ibASTM B338 Gr2 titanium condenser rajyog rooted nyob rau hauv nws meej chemistry thiab mechanical yam ntxwv. Raws li kev lag luam ntshiab (CP) qib, nws ua tiav nws lub zog thiab tshwj xeeb corrosion kuj los ntawm kev tswj cov khoom sib txuas, feem ntau cov pa.
Cov Khoom Siv Tshuaj Txhuam Hniav rau Qib 2 Titanium (UNS R50400)
| Element | Cov ntsiab lus (% los ntawm qhov hnyav, max tshwj tsis yog sau tseg) | |
|---|---|---|
| Titanium (Ti) | Tshuav | Lub hauv paus ntsiab lus, muab qhov tseem ceeb corrosion tsis kam rau chlorides. |
| Cov pa oxygen (O) | Tsawg dua lossis sib npaug li 0.25 | Qhov tseem ceeb ntxiv dag zog. Tswj kom ntseeg tau lub zog yam tsis muaj kev txi ductility. |
| Hlau (Fe) | Tsawg dua los yog sib npaug li 0.30 | Impurity tswj kom muaj kev ua haujlwm corrosion, tshwj xeeb hauv kev txo cov kua qaub. |
| Cov pa roj carbon (C) | Tsawg dua los yog sib npaug li 0.08 | Txwv kom tsis txhob hnov qab thiab tswj cov ductility. |
| Nitrogen (N) | Tsawg dua lossis sib npaug li 0.03 | Zoo ib yam li carbon; khaws cia qis rau qhov zoo tshaj plaws corrosion kuj. |
| Hydrogen (H) | Tsawg dua lossis sib npaug li 0.015 | Critically tsawg los tiv thaiv hydride tsim thiab embrittlement. |
Mechanical Property Requirements rau Qib 2 Titanium Tube
| Khoom | Yuav tsum tau (min) | |
|---|---|---|
| Tensile zog | Ntau dua lossis sib npaug rau 345 MPa (50,000 psi) | Xyuas kom lub raj tuaj yeem tiv taus cov kev kub ntxhov sab hauv thiab sab nraud. |
| Yield zog (0.2% offset) | Ntau dua lossis sib npaug rau 275 MPa (40,000 psi) | Tseem ceeb heev rau kev tsim siab- muaj cov khoom siv; Ua kom lub raj xa rov qab mus rau nws qhov qub qub tom qab kev ntxhov siab raug tshem tawm. |
| Elongation | Ntau dua lossis sib npaug li 20% (hauv 2 nti lossis 50 mm) | Guarantees txaus ductility rau qhov tseem ceeb fabrication kauj ruam zoo linthuav lub raj rau hauv daim ntawv rajthiab tsim U- khoov. |
Dimensions thiab Tolerances rau Heat Exchanger Tubes
Rau lub raj xa hluav taws xob los nruab thiab ua kom raug, qhov ntsuas qhov tseeb tsis yog -xav tau.ASTM B338 txoj cai nruj nrujlos xyuas kom meej haum haum nyob rau hauv lub raj ntawv thiab zoo ib yam ntawm cov tshav kub hloov kev ua tau zoo.
Dimensional Tolerances ib ASTM B338 rau Qib 2 Titanium Tube
| Parameter | Ua siab ntev | |
|---|---|---|
| Sab nraud Diameter (OD) | Tsawg dua lossis sib npaug li 25 hli (1 nti): ± 0.08 hli >25 hli: ± 0.10 hli lossis ± 0.4% |
Xyuas kom lub raj xaub mus rau hauv lub tubesheet qhov nrog qhov tseeb clearance rauroller expansion lossis hydraulic expansion, tsim kom muaj qhov xau- pov thawj foob. |
| Phab ntsa Thickness (WT) | ± 10% ntawm nominal | Guarantees lub siab ntsuas thiab kev tiv thaiv corrosion yog khaws cia. nyias nyias, thiab lub raj tsis ua hauj lwm ntxov; tuab heev, thiab nws cuam tshuam cov cua sov hloov thiab nthuav. |
| Txiav Length (Ncaj Tube) | +3 mm / -0 mm (feem ntau) | Precisely phim lub raj pob khoom tsim, kom ntseeg tau tias kev sib raug zoo nrog lub raj ntawv ntawm ob qho kawg. |
| Kev ncaj | Tsawg dua los yog sib npaug li 1.5 hli ib 'meter' ntev | Tiv thaiv lub raj los ntawm "whipping" los yog khi thaum lub sij hawm ntxig los ntawm cov baffles, txo qhov kev pheej hmoo ntawm kev puas tsuaj. |
| Ovality (Tawm- ntawm-Roundness) | Tsawg dua lossis sib npaug li 2% ntawm OD teev | Tso cai rau cov phab ntsa nyias nyias thaum lub sij hawm nthuav dav thiab ua kom muaj 360-degree foob nrog lub raj ntawv. |
Factory Supply Range ntawm ASTM B338 Qib 2 Titanium Tubes
Muaj Ntau Yam Kev Tsim Khoom
| Yam khoom | Kev Pab Cuam |
|---|---|
| Sab nraud txoj kab uas hla | 6.0–89.0 hli |
| Phab ntsa Thickness | 0.5-5.0 hli |
| Txheem Length | 1000-6000 hli |
| Qhov siab tshaj plaws | Mus txog 18000 mm |
| Tube Hom | Seamless / Welded |
| Hom kawg | Plain End / Beveled End |
| Nto tiav | Pickled / Bright Annealed / Polished |
| Cov qauv | ASTM B338, ASTM B861, ASTM B862, ASME SB338 |
Customization Muaj peev xwm
| Muaj Kev Xaiv | Txhawb nqa |
|---|---|
| Metric Loj | ✓ |
| Qhov ntau thiab tsawg | ✓ |
| BWG Sizes | ✓ |
| SWG Sizes | ✓ |
| Txiav rau Length | ✓ |
| U Bend Tube | ✓ |
| Ncaj Tube | ✓ |
| Thaum tshav kub kub Exchanger Tube Sheet Length | ✓ |
| OEM Drawing Ntau Lawm | ✓ |
Seamless vs Welded Qib 2 Titanium Tube
Seamless Qib 2 Titanium Tube:Tsim los ntawm kev sib tw rotary thiab kos duab txias / dov ib lub pob zeb. Qhov tsis muaj weld seam ua rau nws zoo tagnrho rau siab - cov kev pabcuam siab thiab cov ntawv thov tseem ceeb uas muaj peev xwm weld anomaly tsis tuaj yeem lees txais. Lawv feem ntau muaj nyob rau hauv cov kab me me thiab cov phab ntsa tuab.
Welded Qib 2 Titanium Tube:Tsim los ntawm ib lub tiaj tiaj tiaj thiab welded longitudinally (siv TIG vuam) ua ntej txias- ua haujlwm thiab muab tshuaj txhuam. Niaj hnub welded raj feem ntau100% eddy tam sim no kuajlos xyuas kom meej weld kev ncaj ncees. Lawv muaj peev xwm ua tau ntev dua, kev tswj kom nruj dua, thiab feem ntau yog tus nqi ntau dua - cov kev daws teeb meem zoo rau qhov loj - txoj kab uas hla, nyias- cov ntawv siv phab ntsa xws li qis- cov condensers thiab seawater cooling systems.
Rau feem ntau cov kev siv hluav taws xob sib hloov, cov khoom siv niaj hnub welded thiab kos (W&D) cov raj muaj kev ua haujlwm ze li qhov tsis sib xws ntawm cov raj seamless ntawm tus nqi qis, yog tias lawv tau tsim los rau cov qauv nruj ntawm ASTM B338.
Nto Finish Options rau ASTM B338 Qib 2 Tube
Qhov sab hauv thiab sab nrauv ntawm lub raj xa ncaj qha cuam tshuam rau fouling tsis kam, hloov hluav taws xob ua haujlwm, thiab pib corrosion. Ntau qhov kev ua tiav muaj nyob rau hauv ASTM B338.
Common Surface Finishes rau Qib 2 Titanium Tubes
| Nto tiav | Kev piav qhia | |
|---|---|---|
| Pickled & Ntxuav (AP - Acid Pickled) | Cov txheej txheem tiav. Ib qho huv, matte, oxide-dawb nto tsis muaj nplai. | General hom phiaj tshav kub exchangers, condensers, thiabseawater cooling systemsnyob qhov twg ib yam, corrosion-resistant nto yuav tsum tau. |
| Bright Annealed (BA) | Ib tug du, ci, reflective nto tiav los ntawm annealing nyob rau hauv ib tug tswj chaw (nqus los yog inert gas). | High- daim ntaub ntawv purity, tshuaj, thiab zaub mov- qib cua sov exchangers qhov chaw huv si thiab txo qhov kev pheej hmoo ntawm kis kab mob yog qhov tseem ceeb. |
| Polished tiav | Mechanically polished rau ib qho kev ntxhib los mos (Ra). | Cov kev pab cuam nrog siab - fouling kua qhov twg adu nto thiaj li deposit buildupthiab txhim kho kev huv. |
| Mill Finish (Raws li -Drawn) | Cov tawv nqaij nyoos los ntawm cov txheej txheem kos duab, uas tej zaum yuav muaj cov roj nplaum seem lossis cov cim me me. | Tsis yog-tseem ceeb, qis- daim ntawv thov lub luag haujlwm uas qhov kev zoo nkauj tsis muaj kev txhawj xeeb, thiab tus nqi yog thawj tus tsav tsheb. |
Vim li cas Annealed yog Standard
ASTM B338 Qib 2 titanium raj yuav luag ib txwm muab nkag rau hauv cov mob annealed.Qhov kev kho cua sov no tsis yog xaiv tau; nws yog qhov tseem ceeb rau cov khoom siv ua haujlwm. Annealing muaj cua sov cov hlab rau qhov ntsuas kub (feem ntau 650-760 degree) thiab tom qab ntawd txias rau hauv huab cua.
Lub hom phiaj ntawm annealing yog peb npaug:
Kev ntxhov siab:Nws tshem tawm tag nrho cov kev ntxhov siab los ntawm kev kos duab txias lossis txheej txheem vuam. Qhov no tiv thaiv kev ntxhov siab corrosion tawg (SCC) thiab ua kom lub raj nyob ruaj khov.
Restore Ductility:Nws recrystallizes cov qauv nplej, rov qab kho cov khoom siv elongation rau ntau dua lossis sib npaug li 20%, ua rau nws tsim tau rau U- khoov thiab lub raj nthuav dav.
Optimize Corrosion Resistance:Lub raj annealed kom raug muaj cov qauv microstructure thiab ruaj khov oxide zaj duab xis, ua kom nws qhov kev tiv thaiv zoo rau chlorides thiab lwm yam kev tawm tsam.
Kev tshuaj xyuas thiab kuaj
| Kuaj / Tshuaj xyuas | Txoj kev | |
|---|---|---|
| Eddy Current Testing (ECT) | Tsis yog -kev puas tsuaj, kuaj electromagnetic. | 100% ECTkuaj pom saum npoo thiab nyob ze -sov defects (xws li, tawg, pinholes, inclusions) nyob rau hauv lub raj. Qhov no yog thawj NDT rau cov cua kub exchanger raj. |
| Kev Ntsuas Hydrostatic | Tube puv nrog dej thiab pressurized. | Txheeb xyuas lub raj lub peev xwm los tiv thaiv qhov xav tau sab hauv siab yam tsis muaj qhov xau, lees paub nws cov qauv kev ncaj ncees. |
| Kev kuaj ultrasonic (UT) | NDT siv siab - zaus suab nthwv dej. | Siv feem ntau rau cov raj seamless txhawm rau txheeb xyuas cov teeb meem sab hauv uas ECT yuav plam. |
| PMI (Positive Material Identification) | X-ray fluorescence (XRF) tsom xam. | Paub meej tias cov khoom siv hlau alloy (UNS R50400) ntawm txhua qhov cua sov, tiv thaiv cov khoom sib tov-ups. |
| Flaring Test | Ib tug mandrel raug yuam mus rau hauv lub raj kawg kom nthuav nws. | Paub meej tias ductilitythiab xyuas kom lub raj yuav tsis tawg thaum nthuav mus rau hauv lub tubesheet. |
| Flattening Test | Ib feem ntawm lub raj yog flattened ntawm daim hlau. | Ntsuas lub raj lub peev xwm los deform plastically yam tsis muaj cracking, xyuas kom soundness thiab ductility. |
| Dimensional soj ntsuam | Precision gauges thiab micrometers. | Tshawb xyuas kev ua raws li tag nrho cov kev zam rau OD, WT, ovality, thiab ncaj. |
Thov EN10204 3.1 Daim ntawv pov thawj
Peb lub Hoobkas muaj peev xwm
Cov cuab yeej tseem ceeb hauv peb cov kab ntau lawm suav nrog:
Cold Rolling Mills thiab Cold Drawing Machine:Rau kev ua tiav qhov tseeb qhov ntev thiab qhov ntev yuav tsum tau ua los ntawm ASTM B338.
Lub tshuab nqus tsev / Ci ntsa iab Annealing Rauv:Txhawm rau tsim kom muaj qhov huv, nplai -dawb, tag nrho annealed mob nrog abright annealed nto tiavthaum xav tau.
Straightening thiab Precision txiav kab:Los lav qhov ncaj thiab ntev qhov tseeb qhov tseem ceeb rau kev sib dhos yooj yim.
Eddy Tam sim no thiab Ultrasonic Test Units:Rau kev ua kom zoo, hauv -NDT hauv tsev raws li tus qauv xav tau.
Peb qhov system zoo yog txhawb nqa los ntawm100% khoom traceabilitythiab muaj peev xwm muab ib qhoEN 10204 3.1 Mill Test Certificate (MTC)nrog txhua qhov khoom xa tuaj. Rau cov haujlwm uas xav tau kev pov thawj ntxiv, peb txhawb nqa thib peb -kev tshuaj xyuas ntawm SGS, BV, lossis TUV.
| Yam khoom | Paub meej |
|---|---|
| Yam tsawg kawg nkaus Order Quantity | 100 kg (Nyeem tau) |
| Qauv Order | Muaj |
| Lub Sijhawm Ua Haujlwm Ntau Lawm | 7-25 Hnub |
| Cov nqe lus them nqi | T/T, L/C |
| Nqe lus | EXW, FOB, CFR, CIF |
| Kev tshuaj xyuas | Thib peb-Kev tshuaj xyuas tog muaj |
| Daim ntawv pov thawj | EN10204 3.1 / MTC |
| Ntim | Export Seaworthy Ntim |
Tshuag & Xa
| Khoom | xwm txheej |
|---|---|
| Hom Qib 2 Tubes | Tsis tu ncua ntau lawm |
| Nrov Loj | Tsawg Tshuag |
| Custom Sizes | Ua rau Order |
| Yam tsawg | Txhawb nqa |
| Emergency Order | Thov hu rau Muag |
| Ntau | Lub sij hawm xa tuaj |
|---|---|
| Cov khoom lag luam | 3–5 Hnub |
| <500kg | 7-10 Hnub |
| 500-3000 kg | 15-20 Hnub |
| Qhov project loj | Raws li Cov Txheej Txheem Ntau Lawm |
Ntim thiab Shipping
| Ntim Kauj Ruam | Khoom siv / txoj kev | |
|---|---|---|
| End Caps | Cov ntsaws yas yog ntsia rau ntawm ob qho kawg ntawm txhua lub raj. | Tiv thaiv cov khoom txawv teb chaws (pob zeb, noo noo) los ntawm kev nkag mus rau hauv lub rajthiab tiv thaiv lub raj kawg ntawm kev puas tsuaj. |
| Waterproof Wrapping | Txhua pob yog qhwv rau hauv ib qho hnyav -lub luag haujlwm PE zaj duab xis. | Tiv thaiv cov hlab los ntawmdej hiav txwv, nag, thiab av noothaum lub sij hawm dej hiav txwv freight, tiv thaiv nto staining. |
| Ntoo Crates / Thawv | Muaj zog, xa tawm- qib plywood thawv yog siv rau kev txiav txim me me lossis siab - cov nqi xa khoom. | Muab cov qauv kev tiv thaiv siab tshaj plaws tiv thaiv kev cuam tshuam thiab crushing thaum tuav thiab thauj. |
| Hlau Strapping | Bundles thiab crates yog ntxiv nrog cov hlua steel. | Ua kom ruaj khov, tiv thaiv kev txav mus los hauv pob thiab txo qhov kev pheej hmoo ntawm kev khoov. |
| Labeling & Traceability | Cov ncauj lus kom ntxaws nrog qib, qhov loj me, tus lej xov tooj cua sov, thiab tus lej xaj. | Xyuas kom meejtag nrho traceabilitylos ntawm peb lub Hoobkas rau koj qhov project, ua kom yooj yim ntawm - qhov chaw txais thiab tshuaj xyuas. |
FAQ
1. ASTM B338 npog dab tsi?
Nws npog cov qauv specifications rau seamless thiab welded titanium raj siv nyob rau hauv condensers, tshav kub exchangers, thiab zoo xws li cov cua kub hloov apparatus.
2. Dab tsi yog qhov txawv ntawm ASTM B338 thiab ASTM B861?
ASTM B338 tshwj xeeb raukub exchanger tubes, nrog nruj tolerances thiab ua kom pom tseeb ntawm kev hloov hluav taws xob. ASTM B861 yog raugeneral -lub hom phiaj titanium yeeb nkabsiv nyob rau hauv siab piping systems rau kev thauj cov kua.
3. Puas yog Qib 2 titanium zoo ib yam li UNS R50400?
Yog lawm, UNS R50400 yog Unified Numbering System tsim rauASTM B338 Qib 2 titanium. Lawv yog cov khoom siv tib yam.
4. Dab tsi yog qhov tsawg kawg nkaus tawm lub zog rau Qib 2 titanium raj?
Qhov tsawg kawg nkaus tawm lub zog (0.2% offset) rau Qib 2 raj rau ASTM B338 yog275 MPa (40,000 psi) .
5. ASTM B338 cov raj puas tuaj yeem muab rau hauv U- khoov kev teeb tsa?
Yog lawm, Qib 2 titanium raj feem ntau khoov rau hauv U-puab rau U- raj kub exchangers. Cov raj feem ntau muab nkag rau hauv qhov mob annealed kom yooj yim khoov.
6. Dab tsi yog "100% Eddy Kev Ntsuas Tam Sim No" thiab vim li cas nws tseem ceeb?
Nws yog qhov tsis yog -kev sim ua kom puas tsuaj uas kuaj xyuas qhov chaw thiab ze ntawm - qhov tsis zoo ntawm txhua lub raj. Nws yog ib qho tseem ceeb rau kev ua kom lub raj muaj kev ncaj ncees thiab tiv thaiv hauv - kev pabcuam xau.
7. "Mill Test Certificate" (MTC) muaj dab tsi?
MTC (feem ntau EN10204 3.1) lees paub cov khoom siv tshuaj lom neeg muaj pes tsawg leeg thiab cov txiaj ntsig kev ntsuas tshuab, lees tias nws ua tau raws li ASTM B338 tus qauv. Nws muab tag nrho traceability.
8. Dab tsi yog lub sij hawm txhuas txhuas rau cov qauv loj ntawm Qib 2 titanium raj?
Rau cov qauv Tshuag loj (piv txwv li, OD 19.05mm, 25.4mm), peb muabxa khoom sai ntawm 7-15 hnub. Rau qhov ntau thiab tsawg, lub sij hawm txhuas feem ntau yog 2-4 lub lis piam.
9. Koj puas txhawb qhov thib peb -kev tshuaj ntsuam xyuas rau cov raj no?
Yog lawm, peb txhawb nqa thiab koom tes ua kethib peb-kev soj ntsuam tog los ntawm SGS, BV, TUV, lossis lwm lub koom haum tshuaj xyuasraws li qhov xav tau ntawm qhov project.
10. Yuav ua li cas yog titanium raj feem ntau tiv thaiv export shipping?
Txheem export ntim suav nrogyas kawg kaus mom, waterproof PE zaj duab xis wrapping, thiab ruaj khov ntoo crates los yog thawv, reinforced nrog steel strapping los tiv thaiv kev puas tsuaj thaum lub sij hawm thauj khoom hiav txwv.
