JIS G 3461 steel yeeb nkabyog seamless (SMLS) los yog hluav taws xob-kuj-welded (ERW) carbon steel yeeb nkab, feem ntau yog siv hauv boilers thiab tshav kub exchangers rau daim ntaub ntawv xws li realizing tshav kub exchangers ntawm sab hauv thiab sab nraum lub raj.
SWB 340yog cov pa roj carbon steel yeeb nkab qib hauv JIS G 3461 tus qauv.Nws muaj qhov tsawg kawg nkaus tensile lub zog ntawm 340 MPa thiab qhov tsawg kawg nkaus tawm lub zog ntawm 175 MPa.
Nws yog cov khoom xaiv rau ntau daim ntawv thov kev lag luam vim nws lub zog siab, zoo thermal stability, adaptability, txheeb ze corrosion kuj, nqi-zoo, thiab zoo processability.
TIAB SA 3461muaj peb qib.STB340, STB410, STB510.
SWB 340Yam tsawg kawg tensile zog: 340 MPa;Yam tsawg kawg yield zog: 175 MPa.
SWB 410: Yam tsawg kawg Tensile zog: 410 MPa;Yam tsawg kawg yield zog: 255 MPa.
STB 510:Yam tsawg kawg Tensile zog: 510 MPa;Yam tsawg kawg yield zog: 295 MPa.
Qhov tseeb, nws tsis yog qhov nyuaj kom paub tias qib JIS G 3461 raug cais raws li qhov tsawg kawg nkaus tensile lub zog ntawm cov yeeb nkab steel.
Raws li qib ntawm cov khoom nce, nws tensile thiab yield zog nce raws li, tso cai rau cov khoom muaj peev xwm tiv taus ntau dua loads thiab pressures rau ntau xav tau kev ua hauj lwm ib puag ncig.
Sab nraud txoj kab uas hla ntawm 15.9-139.8mm.
Cov ntawv thov hauv boilers thiab cov khoom siv hluav taws xob feem ntau tsis tas yuav muaj txoj kab uas hla loj heev.Cov raj me me diameters nce thermal efficiency vim qhov chaw saum npoo rau ntim piv rau kev hloov hluav taws xob ntau dua.Qhov no yuav pab hloov cov hluav taws xob hluav taws xob sai dua thiab ua tau zoo dua.
Tubes yuav tsum tau tsim los ntawm lubtua hlau.
Kev sib xyaw ua ke ntawm kev tsim cov yeeb nkab thiab cov txheej txheem tiav.
Hauv kev nthuav dav, lawv tuaj yeem categorized raws li hauv qab no:
Kub-tiav seamless steel raj: SH
Cold-tiav seamless steel raj: SC
Raws li hluav taws xob kuj welded steel raj: EG
Kub-tiav hluav taws xob kuj welded steel raj: EH
Txias-tiav hluav taws xob tiv thaiv welded steel raj: EC
Ntawm no yog cov khoom ntws ntawm Kub-tiav seamless.
Rau cov txheej txheem tsim seamless, nws tuaj yeem muab faib ua seamless steel kav nrog rau sab nraud txoj kab uas hla ntawm ntau tshaj 30mm siv kub tiav lawm, thiab 30mm siv txias tiav lawm.
Cov txheej txheem ntsuas cua sov yuav tsum ua raws li cov qauv hauv JIS G 0320.
Alloying cov ntsiab lus uas tsis yog cov tuaj yeem muab ntxiv kom tau txais cov khoom tshwj xeeb.
Thaum cov khoom raug soj ntsuam, qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg ntawm cov yeeb nkab yuav tsum ua raws li cov lus qhia 3 ntawm JIS G 0321 rau seamless steel kav thiab Table 2 ntawm JIS G 0321 rau cov kav hlau tsis kam.
| Lub cim ntawm qib | C (Carbon) | Si (Silicon) | Manganese (Mn) | P (phosphorus) | S (Sulfur) |
| max | max | max | max | ||
| SWB 340 | 0.18 | 0.35 Nws | 0.30-0.60 Nws | 0.35 Nws | 0.35 Nws |
| Tus neeg yuav khoom tuaj yeem qhia qhov nyiaj Sijhawm rau hauv thaj tsam ntawm 0.10% txog 0.35%. | |||||
Cov tshuaj muaj pes tsawg leeg ntawm STB340 yog tsim los xyuas kom meej cov khoom tsim nyog thiab kev ua haujlwm zoo thaum ua cov khoom tsim nyog rau kev vuam thiab kev siv nyob rau hauv ib puag ncig kub.
| Lub cim ntawm qib | Tensile zog a | Yield point los yog pov thawj kev nyuaj siab | Elongation min,% | ||
| Sab nraud txoj kab uas hla | |||||
| ± 10mm | ≥10mm ~ 20mm | ≥20mm | |||
| N / mm² (MPA) | N / mm² (MPA) | Kuaj daim | |||
| No.11 | No.11 | Nr 11/12 | |||
| min | min | Tensile xeem kev taw qhia | |||
| Parallel rau lub raj axis | Parallel rau lub raj axis | Parallel rau lub raj axis | |||
| SWB 340 | 340 | 175 | 27 | 30 | 35 |
Nco tseg: tshwj xeeb tshaj yog rau cov cua kub exchanger raj, tus neeg yuav khoom, qhov tsim nyog, qhia qhov siab tshaj plaws ntawm tensile lub zog.Hauv qhov no, qhov siab tshaj plaws tensile zog tus nqi yuav tsum yog tus nqi tau los ntawm kev ntxiv 120 N / mm² rau tus nqi hauv cov lus no.
Thaum lub tensile xeem yog nqa tawm ntawm Test piece No. 12 rau lub raj hauv qab 8 hli nyob rau hauv phab ntsa thickness.
| Lub cim ntawm qib | Test daim siv | Elongation min,% | ||||||
| Phab ntsa thickness | ||||||||
| ＞ 1 ≤ 2 mm | 2 ≤ 3 hli | 3 ≤ 4 hli | 4 ≤ 5 mm | 5 ≤ 6 mm | 6 ≤ 7 mm | 7 ~ 8 mm | ||
| SWB 340 | No. 12 | 26 | 28 | 29 | 30 | 32 | 34 | 35 |
Cov txiaj ntsig elongation hauv cov lus no yog xam los ntawm kev rho tawm 1.5% ntawm tus nqi elongation muab rau hauv Table 4 rau txhua 1 hli txo hauv cov phab ntsa phab ntsa ntawm 8 hli, thiab los ntawm kev sib npaug ntawm qhov tshwm sim rau tus lej raws li Txoj Cai A ntawm JIS Z 8401.
Txoj kev xeem yuav tsum tau ua raws li JIS Z 2245. Lub hardness ntawm daim ntawv xeem yuav tsum tau ntsuas ntawm nws tus ntoo khaub lig-section los yog sab hauv nto ntawm peb txoj hauj lwm rau ib daim ntawv xeem.
| Lub cim ntawm qib | Rockwell hardness (tus nqi nruab nrab ntawm peb txoj haujlwm) HRBW |
| SWB 340 | 77 max ua. |
| SWB 410 | 79 max ua. |
| SWB 510 | 92 max ua. |
Qhov kev sim no yuav tsum tsis txhob ua rau cov hlab ntawm phab ntsa tuab 2 hli lossis qis dua.Rau cov hluav taws xob tiv thaiv welded steel hlab, qhov kev ntsuam xyuas yuav tsum tau ua nyob rau hauv qhov chaw uas tsis yog cov vuam los yog cov tshav kub-cuam tshuam cheeb tsam.
Nws tsis siv rau seamless steel raj.
Test Method Muab cov qauv tso rau hauv lub tshuab thiab flatten nws kom txog rau thaum qhov kev ncua deb ntawm ob lub platform mus txog tus nqi teev H. Tom qab ntawd xyuas cov qauv rau cov kab nrib pleb.
Thaum kuaj qhov tseem ceeb ntawm cov yeeb nkab welded, txoj kab nruab nrab ntawm qhov vuam thiab qhov nruab nrab ntawm cov yeeb nkab yog perpendicular mus rau compression kev taw qhia.
H=(1+e)t/(e+t/D)
H: nrug ntawm platens (mm)
t: phab ntsa thickness ntawm lub raj (mm)
D: sab nraud txoj kab uas hla ntawm lub raj (mm)
yog:tas li txhais rau txhua qib ntawm lub raj.STB340: 0.09;STB410: 0.08;TSI 510: 0.07.
Nws tsis siv rau seamless steel raj.
Ib qho kawg ntawm cov qauv yog flared nyob rau hauv chav tsev kub (5 ° C mus rau 35 ° C) nrog ib tug conical cuab tam ntawm ib tug kaum sab xis ntawm 60 ° kom txog rau thaum lub sab nraud txoj kab uas hla yog loj los ntawm ib tug ntau ntawm 1.2 thiab soj ntsuam cov kab nrib pleb.
Qhov kev xav tau no tseem siv tau rau cov raj uas muaj sab nraud ntawm ntau dua 101.6 hli.
Kev ntsuas rov qab flattening tuaj yeem raug tshem tawm thaum ua qhov kev sim flaring.
Txiav ib qhov ntev ntawm 100 hli ntawm qhov ntsuas ntawm ib kawg ntawm cov yeeb nkab thiab txiav cov khoom xeem nyob rau hauv ib nrab ntawm 90 ° los ntawm cov kab weld ntawm ob sab ntawm lub voj voog, noj ib nrab uas muaj cov vuam raws li cov ntawv xeem.
Nyob rau hauv chav tsev kub (5 ° C mus rau 35 ° C) flatten cov qauv mus rau hauv ib lub phaj nrog lub weld nyob rau sab saum toj thiab tshuaj xyuas cov qauv rau cov kab nrib pleb.
Txhua cov yeeb nkab steel yuav tsum tau kuaj hydrostatically lossis tsis ua kom puas tsuajlos xyuas kom meej qhov zoo thiab kev nyab xeeb ntawm cov yeeb nkab thiab ua kom tau raws li cov qauv siv.
Kev Xeem Hydraulic
Tuav cov yeeb nkab sab hauv ntawm qhov tsawg kawg nkaus lossis siab dua siab P (P max 10 MPa) tsawg kawg yog 5 vib nas this, tom qab ntawd xyuas tias cov yeeb nkab tuaj yeem tiv taus lub siab yam tsis muaj qhov xau.
P = 2st/D
PKev ntsuas siab (MPa)
tTug: Phab ntsa thickness (mm)
D: Sab nraud txoj kab uas hla ntawm lub raj (mm)
s: 60% ntawm tus nqi tsawg kawg nkaus ntawm qhov taw tes tawm los yog pov thawj kev ntxhov siab.
Kev kuaj tsis muaj kev puas tsuaj
Kev ntsuam xyuas tsis muaj kev puas tsuaj ntawm cov raj steel yuav tsum tau ua los ntawmultrasonic los yog eddy kev kuaj tam sim no.
RauultrasonicCov yam ntxwv tshuaj xyuas, lub teeb liab los ntawm cov qauv siv uas muaj cov qauv siv ntawm chav kawm UD raws li tau teev tseg hauvTIAB SA 0582yuav tsum suav hais tias yog ib theem tswb thiab yuav tsum muaj ib tug yooj yim teeb liab sib npaug los yog siab tshaj lub tswb theem.
Tus txheej txheem nrhiav tau rhiab heev rau lubeddy tam sim noKev xeem yuav tsum yog qeb EU, EV, EW, lossis EX teev hauvTIAB SA 0583, thiab yuav tsum tsis muaj cov cim qhia sib npaug los yog ntau dua li cov cim qhia los ntawm cov qauv siv uas muaj cov qauv siv ntawm pawg hais.
Yog xav paub ntxivPipe Weight Charts thiab Pipe Schedulesnyob rau hauv tus qauv, koj tuaj yeem nyem los ntawm.
Ua ib txoj hauv kev tsim nyog los sau cov ntaub ntawv hauv qab no.
a) Cov cim ntawm qib;
b) Cov cim rau kev tsim khoom;
c) Dimensions: sab nraud txoj kab uas hla thiab phab ntsa thickness;
d) Tus neeg tsim khoom lub npe lossis txheeb xyuas lub npe.
Thaum lub cim ntawm txhua lub raj yog qhov nyuaj vim nws qhov me me sab nraud txoj kab uas hla los yog thaum thov los ntawm tus neeg yuav khoom, lub cim yuav raug muab rau ntawm txhua pob ntawm cov raj los ntawm txoj kev tsim nyog.
STB340 feem ntau yog siv rau hauv kev tsim cov kav dej thiab cov kav dej flue rau ntau lub tshuab boilers, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas yuav tsum tau ua kom tsis txhob kub thiab siab.
Vim nws cov khoom siv hluav taws xob zoo, nws kuj tsim nyog rau kev tsim cov kav dej rau cov khoom siv hluav taws xob, pab hloov cov cua sov kom zoo ntawm cov xov xwm sib txawv.
Nws kuj tseem tuaj yeem siv los thauj cov dej kub lossis cov kua dej siab, xws li chav dej lossis dej kub, thiab siv dav hauv tshuaj lom neeg, hluav taws xob, thiab kev tsim khoom lag luam.
ASTM A106 Qib A
DIN 17175 St35.8
DIN 1629 St37.0
BS 3059-1 Qib 320
TS EN 10216-1 P235GH
GB 3087 20#
GB 5310 20G
Txawm hais tias cov ntaub ntawv no yuav zoo ib yam ntawm cov tshuaj muaj pes tsawg leeg thiab cov khoom siv yooj yim, cov txheej txheem kev kho cua sov tshwj xeeb thiab kev ua haujlwm yuav cuam tshuam rau cov khoom ntawm cov khoom kawg.
Yog li ntawd, cov ncauj lus kom ntxaws sib piv thiab kev ntsuam xyuas tsim nyog yuav tsum tau ua thaum xaiv cov ntaub ntawv sib npaug rau kev siv tswv yim.
Txij li thaum nws tsim nyob rau hauv 2014, Botop Steel tau dhau los ua tus xa khoom ntawm carbon steel yeeb nkab nyob rau sab qaum teb Tuam Tshoj, paub txog kev pabcuam zoo, cov khoom zoo, thiab cov kev daws teeb meem.Lub tuam txhab muaj ntau yam carbon steel kav thiab lwm yam khoom, xws li seamless, ERW, LSAW, thiab SSAW steel yeeb nkab, raws li zoo raws li ib tug tag nrho lineup ntawm cov yeeb nkab fittings thiab flanges.
Nws cov khoom tshwj xeeb kuj suav nrog cov qib high-qib alloys thiab austenitic stainless hlau, tsim kom tau raws li qhov xav tau ntawm ntau yam kev siv kav dej.
