TIAB SA 3455yog ib tug Japanese Industrial Standard (JIS) rau high-pressure kev pab cuam ntawm kub ntawm 350 ° C los yog qis dua, feem ntau yog rau cov neeg kho tshuab qhov chaw.
STS370 steel yeeb nkabyog cov yeeb nkab steel nrog lub zog tensile yam tsawg kawg nkaus ntawm 370 MPa thiab qhov tsawg kawg nkaus lub zog ntawm 215 MPa, nrog cov ntsiab lus carbon tsis ntau tshaj 0.25% thiab cov ntsiab lus silicon ntawm 0.10% thiab 0.35%, thiab feem ntau yog siv rau hauv daim ntawv thov siab. lub zog thiab zoo weldability, xws li cov qauv tsim, txuas hniav, cov hlab ntsha siab, thiab cov khoom hauv nkoj.
JIS G 3455 muaj peb qib.STS 370, STS 410, STA480.
Sab nraud txoj kab uas hla ntawm 10.5-660.4mm (6-650A) (1/8-26B).
Tubes yuav tsum tau tsim los ntawm lubtua hlau.
Cov hlau tua yog cov hlau uas tau deoxidized tag nrho ua ntej muab pov rau hauv ingots lossis lwm yam ntaub ntawv.Cov txheej txheem muaj kev ntxiv cov deoxidizing tus neeg sawv cev xws li silicon, aluminium, los yog manganese rau cov hlau ua ntej nws solidifies.Lub sij hawm "tua" qhia tias tsis muaj cov tshuaj tiv thaiv oxygen tshwm sim hauv cov hlau thaum lub sij hawm solidification txheej txheem.
Los ntawm kev tshem tawm cov pa oxygen, tua cov hlau tiv thaiv kev tsim cov pa npuas hauv cov hlau molten, yog li tsis txhob muaj porosity thiab cua npuas hauv cov khoom kawg.Qhov no ua rau ntau homogeneous thiab ntom steel nrog superior mechanical zog thiab kev ua haujlwm ruaj khov.
Kev tua cov hlau tshwj xeeb yog tsim rau cov ntawv thov uas xav tau kev ua haujlwm siab thiab ua haujlwm ntev, xws li cov hlab ntsha siab, cov qauv loj, thiab cov kav dej nrog cov kev xav tau zoo.
Los ntawm kev siv cov hlau tua los tsim cov raj, koj tuaj yeem paub tseeb tias qhov kev ua tau zoo dua thiab kev pab lub neej ntev dua, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas muaj cov khoom hnyav thiab kev kub ntxhov.
Tsim los siv cov txheej txheem tsim khoom seamless ua ke nrog txoj kev ua tiav.
Kub-tiav seamless steel yeeb nkab: SH;
Cold-tiav seamless steel yeeb nkab: SC.
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.
Ntawm no yog cov khoom ntws ntawm Kub-tiav seamless.
Tsawg-kub annealing feem ntau yog siv los txhim kho kev ua haujlwm ntawm cov ntaub ntawv, txo hardness, thiab txhim kho toughness, thiab yog haum rau txias-ua hauj lwm steel.
Normalizing yog siv los txhim kho lub zog thiab toughness ntawm cov khoom, kom cov hlau yog tsim nyog los tiv thaiv txhua yam kev nyuaj siab thiab qaug zog, feem ntau yog siv los txhim kho cov kev ua tau zoo ntawm txias-ua hauj lwm steel.
Los ntawm cov txheej txheem kev kho cua sov no, cov qauv sab hauv ntawm cov hlau tau ua kom zoo dua qub thiab nws cov khoom zoo dua qub, ua rau nws tsim nyog rau kev siv hauv kev thov kev lag luam.
Kev ntsuas kub yuav tsum ua raws li JIS G 0320. Cov khoom lag luam tsom xam yuav tsum ua raws li JIS G 0321.
| qib | C (Carbon) | Si (Silicon) | Manganese (Mn) | P (phosphorus) | S (Sulfur) |
| STS 370 | 0.25% max | 0.10-0.35% | 0.30-1.10% | 0.35% max | 0.35% max |
Kev ntsuas kubyog lub hom phiaj tseem ceeb ntawm kev soj ntsuam cov tshuaj muaj pes tsawg leeg ntawm raw cov ntaub ntawv.
Los ntawm kev txheeb xyuas cov tshuaj muaj pes tsawg leeg ntawm cov khoom siv raw, nws muaj peev xwm kwv yees thiab kho cov txheej txheem ua haujlwm thiab cov xwm txheej uas yuav tsum tau ua hauv cov txheej txheem tsim khoom, xws li kev kho cua sov thiab kev sib ntxiv ntawm cov ntsiab lus alloying.
Kev tshuaj xyuas cov khoomsoj ntsuam cov tshuaj muaj pes tsawg leeg ntawm cov khoom tiav los xyuas kom meej qhov ua tau zoo thiab qhov zoo ntawm cov khoom kawg.
Cov khoom lag luam tsom xyuas kom ntseeg tau tias txhua qhov kev hloov pauv, ntxiv lossis lwm yam tsis huv hauv cov khoom thaum lub sijhawm tsim khoom raug tswj xyuas thiab cov khoom kawg ua tau raws li cov kev qhia tshwj xeeb thiab cov ntawv thov.
JIS G 3455 cov txiaj ntsig ntawm kev tshuaj xyuas cov khoom lag luam yuav tsum tsis yog ua raws li cov cai ntawm cov ntsiab lus hauv cov lus saum toj no, tab sis kuj tseem muaj kev zam ntau yam yuav tsum ua raws li JIS G 3021 Table 3.
Elongation qhov tseem ceeb rau Test piece No. 12 (parallel to pipe axis) thiab Test piece No. 5 (perpendicular to pipe axis) coj los ntawm cov kav dej hauv qab 8 hli hauv phab ntsa tuab.
| 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 | ||
| STS 370 | No. 12 | 21 | 22 | 24 | 26 | 27 | 28 | 30 |
| No. 5 | 16 | 18 | 19 | 20 | 22 | 24 | 25 | |
| Cov txiaj ntsig elongation hauv cov lus no tau txais los ntawm kev rho tawm 1.5% los ntawm tus nqi elongation muab rau hauv Table 4 rau txhua 1 hli txo ntawm phab ntsa thickness 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. | ||||||||
Kev ntsuam xyuas flattening yuav raug tshem tawm tshwj tsis yog tias tus neeg yuav khoom tau teev tseg.
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.0.08 rau STS370: 0.07 rau STS410 thiab STS480.
Haum rau cov kav dej nrog lub cheeb sab nraud ntawm ≤ 50 mm.
Cov qauv yuav tsum tsis muaj kab nrib pleb thaum khoov ntawm 90 ° nrog rau sab hauv txoj kab uas hla 6 npaug ntawm txoj kab uas hla sab nraud ntawm cov yeeb nkab.
Lub kaum sab xis yuav tsum ntsuas thaum pib ntawm qhov khoov.
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
Yog tias tsis muaj qhov ntsuas siab tau teev tseg, qhov tsawg kawg nkaus hydro test siab yuav tsum tau txiav txim siab raws li Cov Txheej Txheem Yeeb Nkab.
| Nominal phab ntsa thickness | 40 | 60 | 80 | 100 | 120 | 140 | 160 |
| Tsawg kawg hydraulic ntsuas siab, Mpa | 6.0 | 9.0 ib | 12 | 15 | 18 | 20 | 20 |
Thaum cov phab ntsa tuab ntawm cov kab sab nraud ntawm cov yeeb nkab steel tsis yog tus qauv tus nqi hauv lub rooj ntawm qhov hnyav ntawm cov yeeb nkab steel, nws yog ib qho tsim nyog yuav tau siv cov qauv los xam cov nqi siab.
P = 2st/D
PKev ntsuas siab (MPa)
t: phab ntsa thickness ntawm cov yeeb nkab (mm)
D: Sab nraud txoj kab uas hla ntawm cov yeeb nkab (mm)
s: 60% ntawm qhov tsawg kawg nkaus tus nqi ntawm qhov taw tes tawm los yog pov thawj kev ntxhov siab muab.
Thaum qhov tsawg kawg nkaus hydrostatic test siab ntawm tus lej npaj siab tshaj qhov ntsuas siab P tau txais los ntawm cov mis, lub siab P yuav tsum tau siv raws li qhov tsawg kawg nkaus hydrostatic xeem siab es tsis txhob xaiv qhov tsawg kawg nkaus hydrostatic test siab nyob rau hauv cov lus saum toj no.
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.
Teem sijhawm 40 yeeb nkab yog qhov tsim nyog rau kev siv qis rau nruab nrab-siab vim tias nws muaj cov phab ntsa tuab tuab uas tsis txhob hnyav hnyav thiab tus nqi thaum ua kom muaj zog txaus.
Teem caij 80 piping yog dav siv nyob rau hauv kev lag luam ib puag ncig uas yuav tsum tau muaj siab tuav, xws li tshuaj ua tshuab thiab roj thiab roj kis piping, vim nws muaj peev xwm tiv taus siab dua thiab muaj zog mechanical cuam tshuam vim nws cov phab ntsa tuab, muab kev nyab xeeb ntxiv. , kev ruaj ntseg, thiab kav ntev.
Txhua lub raj yuav tsum tau sau nrog cov ntaub ntawv hauv qab no.
a)Lub cim ntawm qib;
b)Lub cim ntawm txoj kev tsim khoom;
c)Qhov ntevPiv txwv li 50AxSch80 los yog 60.5x5.5;
d)Tus neeg tsim khoom lub npe lossis txheeb xyuas lub npe.
Thaum lub cheeb sab nraud ntawm txhua lub raj me me thiab nws nyuaj rau kos txhua lub raj, lossis thaum tus neeg yuav khoom xav kom txhua lub pob ntawm cov raj raug cim, txhua pob yuav raug cim los ntawm txoj kev tsim nyog.
STS370 yog qhov tsim nyog rau cov tshuab hluav taws xob tsis tshua muaj siab tab sis kuj muaj qhov kub thiab txias ntawm cov kua hloov pauv.
Cua sov tshuab: Nyob rau hauv lub nroog cua sov los yog lub tsev loj lub tsev cua sov, STS370 yuav siv tau los thauj cov dej kub los yog chav dej vim nws muaj peev xwm tiv taus lub siab thiab kub hloov nyob rau hauv lub system.
Cov nroj tsuag muaj zog: Hauv kev tsim hluav taws xob, yuav tsum muaj cov kav dej siab siab ntau, thiab STS370 yog cov khoom siv zoo tshaj plaws rau kev tsim cov kav dej vim tias nws tuaj yeem tiv taus lub sijhawm ntev ntawm qhov kub thiab txias ua haujlwm.
Compressed cua tshuab: Hauv kev tsim thiab siv cov kab ntau lawm, cov cua compressed yog ib qho tseem ceeb ntawm lub zog, thiab STS370 steel yeeb nkab yog siv los tsim cov kav dej rau cov tshuab no kom muaj kev nyab xeeb thiab ua haujlwm zoo.
Kev siv cov qauv thiab cov tshuab dav dav: Vim nws cov khoom siv kho tshuab zoo, STS370 kuj tuaj yeem siv rau hauv kev tsim khoom ntawm ntau yam qauv thiab cov khoom siv kho tshuab, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas yuav tsum muaj qee lub zog compressive.
JIS G 3455 STS370 yog cov khoom siv carbon steel siv hauv kev pabcuam siab.Cov ntaub ntawv hauv qab no tuaj yeem suav tias yog sib npaug lossis ze li sib npaug:
1. ASTM A53 Qib B: Haum rau kev siv cov txheej txheem dav dav thiab kev siv tshuab thiab kev thauj mus los ntawm cov dej.
2. API 5L Qib B: Rau high-pressure roj thiab roj thauj pipelines.
3. DIN 1629 St37.0: Rau kev siv tshuab engineering thiab kev tsim kho nkoj.
4. TS EN 10216-1 P235TR1: Seamless steel yeeb nkab rau qhov kub thiab txias ib puag ncig.
5. ASTM A106 Qib B: Seamless carbon steel yeeb nkab rau kev pabcuam kub.
6.ASTM A179 Cov khoom lag luam: Seamless txias-draw me me steel hlab thiab cov kav dej rau kev pabcuam kub.
7. DIN 17175 St35.8: Seamless raj cov ntaub ntawv rau boilers thiab siab hlab ntsha.
8. TS EN 10216-2 P235GH: Seamless raj thiab cov kav dej tsis-alloy thiab alloy steel rau qhov kub thiab txias ib puag ncig.
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.
