Khoom:SA210 Qib A-1 (ASTM A210/ASME SA210) cov hlau tsis muaj hlau nruab nrab uas muaj ntau tus hlau rifled - sab hauv muaj cov xov sib ntswg rau sab hauv. Tsim los ntawm kev rub txias hla lub qhov ntsaws rifled tshwj xeeb. Tsim rau cov phab ntsa dej boiler siab (supercritical thiab ultra-supercritical units saum toj no 300,000 KW). Lub rifling sab hauv ua rau muaj zog centrifugal uas cais dej ntawm cov pa, yuam cov kua mus rau phab ntsa raj kom tswj tau nucleate boiling thiab tiv thaiv cov zaj duab xis pa.
Cov Lus Tseem Ceeb:SA210 rifled raj, SA210 Qib A-1 seamless raj, ntau-lead rifled boiler raj, sab hauv ribbed raj, txias rub rifled raj, dej phab ntsa raj, kauv ribbed raj, ASME SA210 boiler raj, SA210 Qib A-1 txias rub seamless raj, high efficiency boiler raj, supercritical boiler dej phab ntsa, rifled raj chaw tsim khoom, rifled raj chaw muag khoom Tuam Tshoj
Lus Cim Txog Cov Lus Siv:"Rifled tube" thiab "internally ribbed tube" yog hais txog tib yam khoom. Ob lo lus no piav qhia txog cov raj seamless nrog cov ribs kauv uas tsim rau sab hauv los ntawm kev kos txias hla lub qhov ntsaws grooved. ntau tus thawj cojlub npe qhia txog ntau lub helical ribs sib luag (feem ntau yog 4 lossis 6 pib) khiav raws qhov ntev ntawm lub raj.
1. Cov Khoom Siv Tseem Ceeb: SA210 Qib A-1 Seamless Medium-Carbon Steel
ASTM A210/ASME SA210 yog tus qauv txheem rau cov raj boiler thiab cov raj superheater uas tsis muaj qhov sib txuas nruab nrab. Cov lus qhia no suav nrog cov raj hlau uas tsawg kawg nkaus-phab ntsa-tuab rau cov raj boiler, suav nrog cov qhov kawg nyab xeeb, cov raj arch, cov raj stay, thiab cov raj superheater. SA210 Qib A-1 yog qib siv dav tshaj plaws rau kev pabcuam raj boiler dav dav, muab kev sib npaug zoo ntawm lub zog, kev ywj pheej, thiab tus nqi.
Rau kev kub siab dua thiab kev pabcuam kub dua, SA210 Qib C (cov pa roj carbon ntau dua, lub zog siab dua) kuj muaj. Txawm li cas los xij, Qib A-1 tseem yog tus qauv kev lag luam rau cov ntawv thov phab ntsa dej uas xav tau kev ua kom zoo rau kev khoov txias thiab kev ua tau zoo ntawm cov hlau kub txog li 425 ° C (800 ° F).
1.1 Cov Tshuaj Lom Zem (ASTM A210 Qib A-1)
| Khoom | Qhov Yuav Tsum Tau Ua (siab tshaj plaws/feeb) | Ib txwm muaj (Womic Steel) |
| Cov pa roj carbon (C) | ≤0.27% | 0.22-0.25% |
| Manganese (Mn) | ≤0.93% | 0.45-0.60% |
| Silicon (Si) | ≥0.10% | 0.18-0.33% |
| Phosphorus (P) | ≤0.035% | ≤0.015% |
| Sulfur (S) | ≤0.035% | ≤0.010% |
Cov lus qhia ntawm lub rooj: ASTM A210 / ASME SA210 cov lus qhia tshwj xeeb
1.2 Cov Khoom Siv Kho Tshuab
| Vaj tse | Qhov Yuav Tsum Tau Kawm Qib A-1 | Ib txwm muaj (Womic Steel) |
| Lub Zog Tawm (min) | 255 MPa (37,000 psi) | 280-320 MPa |
| Lub zog Tensile (min) | 415 MPa (60,000 psi) | 450-520 MPa |
| Kev ntev (min) | 30% (ntev) | 32-36% |
| Qhov nyuaj (siab tshaj plaws) | 79 HRB / 143 HB | 70-75 HRB |
*Qib C (0.24-0.31% C, YS≥275 MPa, TS≥485 MPa) muaj zog dua 5-10% tab sis qis dua ductility; pom zoo rau cov raj superheater thiab kev pabcuam kub dua.*
1.3 Cov Khoom Siv Lub Cev
| Vaj tse | Tus nqi |
| Qhov Ceev | 7.85 g/cm³ |
| Kub siab tshaj plaws rau kev pabcuam | 425°C (800°F) |
| Modulus ntawm elasticity | 200 GPa |
| Kev ua kom sov (100 ° C) | ~48 W/m·K |
| Tus lej ntawm kev nthuav dav | 12.2 μm/m·K (20-200°C) |
1.4 Cov Qauv Siv Tau
| Tus Qauv | Kev piav qhia |
| ASTM A210 / A210M | Cov Qauv Txheem rau Seamless Medium-Carbon Steel Boiler thiab Superheater Tubes |
| ASME SA210 | ASME version (cov kev cai zoo sib xws) |
| GB/T 20409-2018 | Tus qauv hauv tebchaws Suav rau cov raj xa dej (cov raj xa dej siab siab boiler seamless) |
| EN 10216-2 (piv tau) | Tus qauv European rau cov kav hlau tsis muaj seamless rau lub hom phiaj siab |
2. Cov Raj Uas Muaj Cov Hlau Txuas Ntau: Cov Qauv Geometric
Cov raj xa hluav taws xob ntau-lead (MLR) raug muab faib ua ob qho kev teeb tsa tus qauv, txhua tus tsim rau cov xwm txheej ua haujlwm tshwj xeeb:
| Cov Qauv | Hom A (Tus Qauv) | Hom B / Zoo Tshaj Plaws |
| Lub kaum sab xis ntawm Helix | 30° | 30°+ (txog li 40°+) |
| Kev txhim kho kev hloov pauv cua sov | 30% hla lub raj du | 50%+ hla lub raj du (sib sau ua ke) |
| Tus naj npawb ntawm cov leads (rib starts) | 4 los yog 6 | 4 los yog 6 |
| Geometry ntawm tav tav | Cov duab plaub fab | Optimized (puag ncig los yog notched) |
Cov raj xa hluav taws xob ntau tus qauv raug muab faib ua ob hom (Hom A thiab Hom B) nrog lub kaum sab xis helix 30-degree. Cov raj xa hluav taws xob ntau tus qauv zoo tshaj plaws tuaj yeem muaj lub kaum sab xis helix txog li 40°+, muab kev txhim kho ntxiv 20% hauv kev ua haujlwm thermal dua li cov raj xa hluav taws xob ib txwm.
Cov ntaub ntawv tshawb fawb:ib lub raj phom uas muaj 4 lub tav, sab nraud txoj kab uas hla 25 hli, qhov siab ntawm tav 0.68 hli, qhov dav ntawm tav 9.25 hli, thiab lub kaum sab xis helix 60°, tau raug lees paub los ntawm kev sim. Kev tshawb fawb suav lej lees paub tias cov qauv tsim raj phom zoo tshaj plaws nrog cov tav plaub fab (qhov siab 0.775 hli, lub kaum sab xis helix 30° thiab 58°) txhim kho qhov ntws ntawm lub helical thib ob ze ntawm phab ntsa raj, txhim kho qhov ua tau zoo ntawm kev hloov pauv cua sov.
Kev nce ntawm thaj chaw nto:thaj tsam sab hauv ib chav ntev ntawm cov raj xa dej sab hauv yog kwv yees li 1.5 txog 2.4 npaug ntawm cov raj du uas muaj tib lub cheeb tsam sab nraud. Cov txheej txheem kos duab txias ua rau phab ntsa sab hauv ua ib lub qauv ribbed kauv nrog cov qhov ntev geometric meej, ua rau thaj chaw hloov pauv cua sov ntawm lub raj nce ntxiv piv rau cov raj liab qab.
2.1 Cov Lus Qhia Tshwj Xeeb (Los ntawm Kev Tsim Khoom Tiag)
| Qhov Loj × Qhov Hnyav (hli) | Kev Siv Ib Txwm Muaj |
| Φ28.6 × 6.2 | Cov vaj huam sib luag phab ntsa dej, qhov siab nruab nrab |
| Φ31.8 × 5.5 | Cov vaj huam sib luag phab ntsa dej |
| Φ38.1 × 7.5 | Tus qauv dej phab ntsa raj |
| Φ63.5 × 7.5 | Phab ntsa dej boiler loj |
| Φ66.7 × 8 | Cov boilers supercritical / ultra-supercritical |
*Cov lus qhia dav dav rau SA210 Qib A-1 thiab Qib C ntau-lead rifled raj*
2.2 Kev Tiv Thaiv Kev Tsim Khoom (Tawm Txias)
| Cov Qauv | Kev kam rau siab |
| Txoj kab uas hla sab nraud (OD) | ±0.10 hli rau OD <25.4 hli; ±0.15 hli rau OD 25.4–38.1 hli |
| Phab ntsa tuab | -0% / +20% rau kev kos txias |
| Ntev | +20/-0 hli |
| Kev Ncaj Ncees | ≤1.5 hli ib 'meter' |
Qhov Chaw: ASTM A210 txias rub raj kam rau siab
3. Cov Txheej Txheem Tsim Khoom - Kos Duab Txias nrog Rifled Plug
Womic Steel tsim cov raj xa dej boiler SA210 Qib A-1 uas muaj ntau tus hlau ua los ntawm cov hlau tsis muaj hlau siv cov txheej txheem kos duab txias zoo tshaj plaws nrog lub hau ntswj tig. Cov txheej txheem pib nrog cov khoom siv raj xa dej kub dov, uas ua haujlwm ua cov khoom siv pib rau kev kos duab txias tom qab. Tom qab kev kos duab txias thawj zaug dhau los ntawm lub hau ntswj du kom ua tiav qhov ntev tsis meej, kev kos duab kawg siv lub hau ntswj ntau tus hlau.
Ib lub qhov ntsaws uas tsim tshwj xeeb (sab nraud grooved hauv tus qauv helical) raug ntxig rau hauv lub raj hlau thiab txuas rau lub mandrel tig. Lub raj raug rub los ntawm lub tshuab txo qis, thiab thaum lub raj raug rub mus tom ntej, lub qhov ntsaws tig, tsim ntau lub helical tav txuas ntxiv mus rau sab hauv. Lub cev ntsaws muaj cov grooves sab nraud sib nrug sib npaug zos nyob ib puag ncig nws lub hauv paus axis, nrog rau cov av sab nraud hloov pauv ntawm cov grooves. Thaum lub raj raug rub hla lub qhov ntsaws grooved no, cov av ua rau muaj tus qauv kauv tswj - feem ntau yog 4 lossis 6 lub ribs sib nrug sib npaug zos - rau ntawm phab ntsa sab hauv ntawm lub raj, thaum cov grooves tso cai rau cov hlau hloov chaw ntws.
Kev siv cov lej siab heev (Finite Element Method, FEM) los ua kom zoo dua cov qauv pwm ua ntej kev tsim khoom, txo qhov tsis zoo ntawm cov khoom siv thiab phab ntsa ntawm lub raj. Cov txiaj ntsig tseem ceeb ntawm cov txheej txheem no suav nrog kev tsim cov tav ruaj khov, kev tsim khoom siab, lub neej ntev ntawm cov cuab yeej, cov qauv tav sib xws, thiab qhov tiav ntawm sab hauv du. Qhov ntev kawg tau txais yog kos txias rau OD thiab WT meej, kho cua sov tag nrho (normalized), thiab 100% NDT tshuaj xyuas.
4. Lub Tshuab Txhim Kho Kev Hloov Kub - Vim Li Cas Cov Raj Rifled Ua Haujlwm
Hauv cov raj dej kub uas du, cov npuas dej sib sau ua ke rau sab hauv, tsim ib daim zaj duab xis dej kub tas mus li. Daim zaj duab xis dej kub no yog ib qho khoom siv hluav taws xob tsis zoo, ua rau kev hloov pauv cua sov txo qis thiab ua rau lub raj kub dhau thiab ua tsis tau zoo (tawm ntawm nucleate boiling, lossis DNB).
Cov raj xa dej uas muaj rab phom daws qhov teeb meem no los ntawm kev ua kom muaj zog centrifugal hauv cov dej ntws, thawb cov dej ua kua mus rau ntawm phab ntsa raj thaum cov pa dej txav mus rau hauv nruab nrab. Lub tshuab no muab plaub qhov txiaj ntsig tseem ceeb:
Kev txo qis ntawm DNB— txheej dej ntawm phab ntsa ua kom cov nucleate npau tas mus li txawm tias muaj cua sov ntau.
Kev qhuav qeeb— nyob rau hauv cov xwm txheej subcritical, rifling ntev lub sijhawm qhuav, tiv thaiv kev ncaj ncees ntawm lub raj.
Cov cua sov kub dua tseem ceeb— Lub nucleate boiling tseem nyob ntawm qhov kub siab dua.
Kev txhim kho kev hloov pauv cua sov— txawm tias thaum muaj cov huab cua tsawg, lub raj xa dej tau txhim kho qhov hloov pauv cua sov thaum txo cov huab cua uas xav tau rau kev txias txaus.
Cov kev tshawb fawb CFD suav nrog cov lej qhia tau hais tias kev ua kom zoo dua cov qauv geometric—xws li tus naj npawb ntawm kev pib tua phom, qhov siab ntawm tav, thiab qhov ntev ntawm kev tua phom—tuaj yeem ua rau muaj kev hloov pauv cua sov ntau dua li cov qauv tsim phom yooj yim. Cov dej ntws uas tsim los ntawm cov tav helical tsim cov kua nyias nyias ntawm phab ntsa, ua rau muaj kev hloov pauv cua sov ntau dua piv rau cov raj du.
5. Kev Tswj Xyuas Zoo & Kev Ntsuas
Txhua lub SA210 A-1 rifled tube batch raug kuaj xyuas nruj raws li cov qauv qhia:
| Kev Ntsuas | Txoj Kev | Scope |
| Kev tshuaj xyuas tshuaj lom neeg | OES spectrometer | Ib qho cua sov (txhua pawg) |
| Kev sim zog | ASTM A370 | Ib qho cua sov (ib pawg) |
| Kev sim qhov nyuaj | HRB / HB | Ib pawg |
| Kev sim hydrostatic | Siab ≥1.5 × tsim siab | Txhua lub raj |
| Eddy tam sim no / UT (NDT) | Tsis siv neeg ntawm kab lossis tawm kab | 100% kev tshuaj xyuas |
| Flaring & flattening | ASTM A450 | Ib pawg (rau kev txheeb xyuas qhov ductility) |
| Kev Txheeb Xyuas Cov Khoom Siv Zoo (PMI) | XRF (xaiv tau) | Txhua lub raj lossis raws li xav tau |
| Kev tshuaj xyuas qhov ntev | Laser / calipers / optical comparator | 100% (OD, WT, tav geometry, helix lub kaum sab xis) |
Kev ntsuas geometry ntawm tav tav:Tus naj npawb ntawm cov tav, qhov siab ntawm tav, qhov dav ntawm tav, qhov ntev ntawm lub suab, thiab lub kaum sab xis ntawm lub helix raug txheeb xyuas siv cov khoom sib piv qhov muag lossis cov duab qhia meej. Cov kev ntsuas no yuav tsum sib xws thoob plaws tag nrho lub raj kom ntseeg tau tias muaj kev ua haujlwm hloov pauv cua sov sib xws.
Daim Ntawv Pov Thawj:EN 10204 Hom 3.1 (tus qauv), Hom 3.2 (nrog tus neeg tim khawv thib peb). Kev tshuaj xyuas thib peb los ntawm SGS, BV, DNV, TÜV muaj.
6. Daim Ntawv Thov - Qhov twg SA210 A-1 Rifled Tubes Excel
Cov raj xa dej uas muaj ntau txoj hlua khi ua ke feem ntau yog siv rau hauv cov phab ntsa dej ntawm cov chaw tsim hluav taws xob loj uas muaj peev xwm loj thiab cov chaw tsim hluav taws xob ultra-supercritical boilers (feem ntau yog cov chav ntsuas ntawm 300,000 KW thiab siab dua). Tuam Tshoj ib leeg siv kwv yees li 25,000–30,000 tons ntawm cov raj xa dej txhua xyoo rau lub hom phiaj no. Cov qib khoom siv ib txwm muaj xws li SA210 Qib A-1, SA210 Qib C, thiab SA213 T2.
Cov ntawv thov tshwj xeeb suav nrog:
l Cov vaj huam sib luag phab ntsa dejhauv cov boilers supercritical
l Cov vaj huam sib luag dej super/ultra-supercriticaltshaj 300,000 KW
l Cov nplaim cua sov ua kom sov
l Cov cheeb tsam cua sov qis duanrog lub zog cua sov siab tshaj plaws
l Kev lag luam tshuaj lom neeg thiab hluav taws xobxav tau kev pauv cua sov siab
Tau qhov twg los: Cov lus qhia txog kev siv ntau yam hlau rifled seamless steel tube
7. Kev Sib Piv Qib - Thaum Twg Yuav Tsum Siv SA210 A-1 piv rau SA210 C piv rau Lwm Cov Khoom Siv
| Qib / Khoom Siv | Cov ntsiab lus carbon | Lub Zog Tawm | Cov Yam Ntxwv Tseem Ceeb | Kev Siv Pom Zoo |
| SA210 A-1 | ≤0.27% | tsawg kawg 255 MPa | Qhov zoo tshaj plaws rau kev khoov txias; lub zog nruab nrab; pheej yig tshaj plaws | Cov phab ntsa dej boiler dav dav, cov cheeb tsam cua sov qis dua |
| SA210 C | ≤0.35% | tsawg kawg 275 MPa | Muaj zog dua; 5-10% ntau dua li A-1; phab ntsa nyias dua ua tau | Cov raj xa dej kub heev; thaj chaw kub dua; phab ntsa dej uas muaj siab dua |
| SA213 T2 | 0.10-0.20% | tsawg kawg 205 MPa | Cr-Mo (0.5% Cr, 0.5% Mo); zoo dua qub tiv taus qhov kub siab | Cov raj boiler kub dua; cov chaw ua roj av |
| SA213 T12 | 0.05-0.15% | tsawg kawg 220 MPa | 1% Cr-0.5% Mo hlau; lub zog nkag zoo heev ntawm qhov kub siab | Cov phab ntsa boiler supercritical; cov taub hau kub siab |
| SA209 T1a | 0.10-0.20% | tsawg kawg 205 MPa | Cr-Mo (0.5% Cr, 0.5% Mo); zoo ib yam li T2 | Cov raj xa dej phab ntsa; kev siv siab |
Kev xaiv qib kom raug yog qhov tseem ceeb heev - kev siv qib qis-alloy (T2/T12) ua rau cov nqi khoom siv nce ntxiv yam tsis tsim nyog, thaum siv qib carbon steel (A-1) hauv thaj chaw kub heev ua rau muaj kev pheej hmoo ntawm kev puas tsuaj rau lub raj vim yog kev puas tsuaj.*
8. Cov Lus Nug Feem Ntau (FAQ)
Q1: Qhov zoo ntawm kev hloov pauv cua sov dua li cov raj du yog dab tsi?
A: Cov raj xa hluav taws xob ntau tus qauv (30-degree helix angle) txhim kho kev ua haujlwm thermal los ntawm 30% piv rau cov raj du. Cov raj xa hluav taws xob zoo tshaj plaws (40-degree + helix angle) tuaj yeem xa kev txhim kho ntxiv 20%, rau kev nce qib ntawm 50% lossis ntau dua.
Q2: Cov ntaub ntawv twg siv tau rau cov raj xa dej?
A: Cov ntaub ntawv siv feem ntau suav nrog ASME SA210 Qib A-1, SA210 Qib C, thiab SA213 T2. Thaum SA213 T2 (Cr-Mo alloy) kuj tuaj yeem raug rifled, nws kim dua thiab feem ntau yog tseg rau thaj chaw kub dua. Womic Steel kuj tseem tuaj yeem tsim cov raj rifled hauv SA213 T12, SA213 T22, thiab lwm yam qib kev cai raws li cov neeg siv khoom qhia.
Q3: Koj ua li cas thiaj paub tseeb tias cov duab puab sab hauv yog dab tsi?
A: Tus naj npawb ntawm cov tav, qhov siab ntawm tav, qhov dav ntawm tav, qhov ntev ntawm lub suab, thiab lub kaum sab xis ntawm lub helix raug txheeb xyuas siv cov khoom sib piv qhov muag pom tseeb lossis cov duab qhia. Cov ntawv qhia tag nrho muaj rau txhua pawg.
Q4: Cov raj xa dej puas muaj nyob rau hauv qhov loj me?
A: Yog. Peb tuaj yeem tsim cov raj xa dej raws li cov neeg siv khoom cov lus qhia, suav nrog kev cai OD, phab ntsa tuab, tus lej ntawm cov tav pib (4 lossis 6), lub kaum sab xis helix, thiab cov qauv ntawm tav. Thov muab koj cov kev xav tau rau kev daws teeb meem tshwj xeeb.
Q5: Cov nto tiav twg muaj?
A: Cov txheej txheem tiav yog annealed thiab pickled (AP) rau cov nplaim sab nraud thiab sab hauv huv si. Cov xim ci ntsa iab (BA) lossis cov xim ci ntsa iab muaj thaum thov.
Q6: Koj muab cov ntawv pov thawj dab tsi?
A: Daim Ntawv Pov Thawj Xeem Zeb ib EN 10204 Hom 3.1 (tus qauv), Hom 3.2 nrog cov neeg ua tim khawv thib peb (SGS, BV, DNV, TÜV). Kev taug qab tag nrho los ntawm tus lej cua sov mus rau txhua lub raj tiav.
Q7: Koj puas muab kev tshuaj xyuas sab nraud?
A: Yog. Peb pab txhawb kev tshuaj xyuas los ntawm SGS, BV, DNV, TÜV, ABS, LR. PMI, kev tshuaj xyuas qhov ntev, thiab kev kuaj xyuas tshuab muaj thaum thov.
Q8: Lub sijhawm ua khoom siv rau SA210 A-1 rifled tubes yog dab tsi?
A: Rau cov qauv txheem (Φ28.6 × 6.2, Φ38.1 × 7.5, thiab lwm yam), lub sijhawm ua khoom yog kwv yees li 30-45 hnub txij li hnub lees paub kev txiav txim. Cov lus qhia tshwj xeeb yuav tsum tau 45-60 hnub.
Q9: Lub kaum sab xis siab tshaj plaws uas ua tau rau SA210 A-1 rifled tubes yog dab tsi?
A: Cov kaum sab xis helix txheem yog txij li 30 ° txog 60 °, nyob ntawm seb daim ntawv thov tshwj xeeb thiab cov kev txwv geometric. Cov qauv tsim zoo tshaj plaws nrog cov kaum sab xis helix txog li 60 ° tau raug kuaj xyuas thiab tsim nyog rau cov phab ntsa dej boiler ua haujlwm siab.
Q10: Koj puas tuaj yeem muab cov raj xa dej rifled hauv U bent configurations?
A: Yog, peb muab kev khoov txias ntawm cov raj rifled nrog mandrels, ua raws li kev kho cua sov tag nrho thiab 100% NDT ntawm thaj chaw khoov. Thov thov daim ntawv hais txog U khoov sib cais.
Q11: Koj puas tuaj yeem muab cov raj xa dej nrog NACE MR0175 daim ntawv pov thawj?
A: SA210 Qib A-1 cov hlau carbon feem ntau tsis tau teev tseg rau kev pabcuam qaub (H₂S). Rau cov ntawv thov uas xav tau ob qho tib si kev tiv thaiv rifling thiab qaub kev pabcuam, peb pom zoo kom cov qib alloy (piv txwv li, SA213 T2) nrog kev xaiv NACE. Thov sab laj nrog peb pab neeg engineering rau cov kev cai tshwj xeeb.
Q12: Qhov tsawg kawg nkaus phab ntsa tuab rau kev tsim cov raj rifled yog dab tsi?
A: Qhov tsawg kawg nkaus ntawm phab ntsa tuab nyob ntawm lub cheeb sab nraud thiab qhov tshwj xeeb ntawm cov tav. Rau kev tsim khoom txheem, phab ntsa tuab ≥4.0mm raug pom zoo rau kev phom sij txhim khu kev qha. Thov hu rau peb los tham txog koj cov kev xav tau tshwj xeeb.
Q13: Cov txheej txheem kos duab txias puas cuam tshuam rau cov khoom siv kho tshuab ntawm lub raj?
A: Cov txheej txheem kos duab txias ua haujlwm-ua rau cov khoom siv tawv, ua rau muaj zog ntxiv. Txawm li cas los xij, qhov kawg annealing (normalizing) rov qab kho qhov ductility thiab ua kom cov khoom siv kho tshuab ua tau raws li ASTM A210 Qib A-1 cov kev cai. Normalizing yog ua tom qab kawg txias kos duab dhau.
Q14: Koj puas tuaj yeem tsim cov raj xa dej uas muaj 6-lead (6-start) tav?
A: Yog. Cov raj xa hluav taws xob ntau txoj muaj nrog rau 4-pib lossis 6-pib teeb tsa. Tus naj npawb ntawm cov xov hlau raug xaiv raws li qhov kev ua tau zoo ntawm kev hloov pauv cua sov thiab txoj kab uas hla ntawm lub raj. Thov qhia koj qhov xav tau thaum lub sijhawm nug.
Q15: Puas tuaj yeem muab cov raj xa dej SA210 Qib A-1 raws li cov khoov U?
A: Yog, peb muab kev khoov txias ntawm cov raj rifled nrog cov mandrels sab hauv los tiv thaiv cov qauv ntawm tav. Tom qab khoov, kev kho cua sov tag nrho thiab 100% NDT ntawm lub vojvoog khoov raug ua tiav. U-bend muaj nyob ntawm qhov ntev kawg; thov hu rau peb kom paub meej ntxiv.
Q16: Puas muaj SA210 Qib A-1 rifled tubes muaj nyob rau hauv qhov ci ntsa iab (BA) tiav?
A: Yog, peb tuaj yeem muab cov raj xa dej uas muaj qhov ci ntsa iab (BA). Qhov no xav tau huab cua tiv thaiv thaum lub sijhawm kho cua sov kawg (piv txwv li, hydrogen lossis dissociated ammonia) kom tiv thaiv kev oxidation. BA tiav yog qhov zoo tagnrho rau kev siv cov kev pabcuam huv si thiab huv si, txawm hais tias nws kim dua li tus qauv annealed thiab pickled (AP) tiav.
Tiv tauj Womic Steel
Yog tias koj muaj lus nug, kev pab txhawb nqa, lossis thov kom muaj tus nqi rau koj cov kev xav tau tshwj xeeb SA210 Qib A-1 multi-lead rifled seamless tube, thov hu rau peb ncaj qha.
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Exa ntawv: info@womicstainless.com
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Womic Steel - Koj tus neeg tsim khoom tshwj xeeb thiab tus khub txhim khu kev qha rau SA210 Qib A-1 ntau-lead rifled seamless boiler tubes, txias kos sab hauv ribbed tubes rau kev ua haujlwm siab supercritical thiab ultra-supercritical dej phab ntsa daim ntawv thov.
Lub sijhawm tshaj tawm: Tsib Hlis-28-2026