1. Dab tsi yog "20g" txhais tau?
Qhov "20g" kev tsim qauv yog cov qauv Suav rau cov qauv hlau rau cov roj hlau steel siv rau siab- siab lub hom phiaj.
20: Sawv cev rau cov ntsiab lus ntawm cov pa roj nruab nrab, uas yog kwv yees li0.20%Cov. Qhov no yog ib nrab -} cov hlau steel, muab cov nyiaj sib npaug zoo ntawm lub zog thiab ductility.
G: Sawv rau"Laib"(钢), phau ntawv Suav rau hlau, thiab hauv cov ntsiab lus no, nws tshwj xeeb txhais tau aSeamless steel yeeb nkab rau high - hillion Boiler Kev Siv.
Thawj tswj hwm tus qauv: GB 5310- Qhov no yog Suav Lub Tebchaws cov qauv rau "Seamless Cov Hlau Hlaub Rau Kev Kub Siab Boiler." Ib qho 20g yeeb nkab tsim kom tau raws li cov tshuaj, tshuab, thiab kev ua tau zoo teev rau hauv tus qauv no.
2. Cov yam ntxwv tseem ceeb ntawm 20G Seamless Steel Yeeb Nkab
Seamless kev tsim kho:Ua los ntawm cov khoom siv cylindrical hlau billet uas yog chob thiab dov rau hauv ib qho yeeb yam tsis muaj welded seam. Qhov no ua rau nws uniformly nyob ib ncig ntawm nws tag nrho lub ncig, zoo tagnrho rau kev kub siab.
Siab - kub lub zog:Nws yog tsim los tswj nws cov qauv kev ncaj ncees thiab lub zog ntawm kev nce kub, feem ntau yuav txog 480℃(896℃(896℃f).
Zoo creep resistance:Creep yog qhov qeeb, deformation kev sib raug zoo ntawm cov khoom muaj kev ntxhov siab nyob rau qhov kev ntxhov siab uas tiv thaiv cov nyhuv no, uas yog qhov tseem ceeb rau cov leeg boiles.
Zoo tshaj plaws siab - bearing muaj peev xwm:Qhov xwm yeem seamless thiab tshwj xeeb tag nrho cov zauv ua nws muaj peev xwm nrog nrog kev ntsuas siab heev.
Zoo Weldability thiab Machinability:Thaum tsis yooj yim rau weld uas tsawg - hlau, nws tau tsim nyog weldability nrog cov txheej txheem tsim nyog. Nws tseem machinese yog qhov tsim nyog.
3.. Tshuaj lom neeg muaj pes tsawg leeg thiab cov tshuab ua haujlwm (ib txwm muaj GB 5310)
| Ib feem | Cov ntsiab lus (%) |
|---|---|
| Carbon (c) | 0.17 ~ 0.23 |
| Silicon (si) | 0.17 ~ 0.37 |
| Manganese (mn) | 0.35 ~ 0.65 |
| Chromium (cr) | Tsawg dua los yog sib npaug rau 0.25 |
| Npib tsib caug (ni) | Tsawg dua los yog sib npaug rau 0.25 |
| Tooj Liab (Cu) | Tsawg dua los yog sib npaug rau 0.20 |
| Sulphur (s) | Tsawg dua los yog sib npaug rau 0.015 |
| Phosphorus (p) | Tsawg dua los yog sib npaug rau 0.025 |
| Ntiag tug | Tus nqi |
|---|---|
| Yield zog (σS) | Ntau dua los yog sib npaug rau 245 MPa |
| Tensile lub zog (ulb) | 410 ~ 550 MPa |
| Elongation (Δ) | Ntau dua los yog sib npaug rau 24% |
| Kev Cuam Tshuam | Raws li cov qauv yuav tsum tau ua |
4. Cov Ntawv Thov Tib Neeg
Vim nws siab - qhov siab thiab siab-} kub muaj peev xwm, 20g feem ntau siv hauv cov ntawv thov tseem ceeb:
Power tiam Boilers:Thawj qhov kev siv. Nws yog siv rau:
Soj Ntsuam Superheater
Ua Kev Txiav Txim Siab
Cov Kav Hauv Paus tseem ceeb
Dej Ntsa Tubes
Boiler headers
High -} siab xa xov:Hauv petrochemical thiab cov nroj tsuag chiv rau kev thauj mus los high -} cov roj siab.
Kev hloov cua sov kub thiab cov hnab looj:Rau cov plhaub thiab cov raj uas ua haujlwm ua haujlwm muaj kev kub ntxhov thiab kub.
General siab - siab kev pab:Ib qho cuab yeej siv lossis cov qauv yuav tsum muaj kev ntseeg siab, seamless yeeb rau high {{}} kub kua conveye.
5. Kev sib piv nrog lwm cov kav dej
Nws muaj txiaj ntsig zoo los sib piv 20g nrog lwm cov kav hlau siv ntau yam siv.
20G thiab ASTM A106 GR. B
Nov yog qhov sib npaug thoob ntiaj teb.
| Yam zoo | 20G (GB 5310) | A106 Gr. B (Astm A106) |
|---|---|---|
| Lub hom phiaj | Suav (GB) | Miskas (Astm) |
| Thawj siv | High - Siab kub boilers | High - kub kev pab cuam dav dav |
| Cov ntsiab lus carbon | ~0.20% | ~ 0.30% max |
| Lub zog tensile | 410-550 MPa | Ntau dua los yog sib npaug rau 415 MPa |
| Qhov tseem ceeb sib txawv | Cov txheej txheem sab nraud ntawm cov teeb meem (s, p) thiab zoo dua siab - kub ua tau rau boiler-}}}}}}}}}}}} kev siv. | Ib qho kev dav dav ntxiv - lub hom phiaj siab - dej ntws txias. Feem ntau suav hais tias muaj kev sib pauv tau rau ntau cov ntawv thov, tab sis rau kev ua haujlwm boiler tseem ceeb heev, tus qauv tshwj xeeb yuav tsum tau ua. |
20G thiab ASTM A53 Gr. B
A53 yog ib qho ntxiv, dav- hom phiaj yeeb nkab.
| Yam zoo | 20g seamless | A53 Gr. B (Seamless) |
|---|---|---|
| Lub hom phiaj | GB 5310 | ASTM A53 |
| Thawj siv | Qhov tseem ceeb siab kub - siab / temp(boilers) | General Qauv & Neeg Kho Tshuab |
| Zoo heev | Qib siab dua, kev tshuaj xyuas ntau dua. | Qib qib rau tsis -} qhov kev siv tseem ceeb. |
| Tus nqi | Siab dua | Qi dua |
| Qhov tseem ceeb sib txawv | 20G yog qhov ua tau zoo - Cov yeeb nkab qib rau kev pabcuam heev. A53 yog ib qho kev dav dav - koog qib yeeb nkab rau cov yam ntxwv xav tsis tau tsawg. Lawv yogtsisHloov pauv ncaj qha. |
20G vs. Stpg 38 (JIS G3454)
Tus Qauv Xov Xwm Japanese Stpg 38 yog lwm cov khoom siv hlau uas nquag muaj hlau. Nws lub zog tensile (ntau dua los yog sib npaug rau 380 MPa) yog qis dua qis dua 20g's, ua rau 20G feem ntau muaj zog dua.
Lub ntsiab
A 20g Seamless Hlau Yeeb Nkabyog aHigh - Zoo, Nruab Nrab-} Cov Yeeb Nkab Hlautsim raws li SuavGB 5310Txheem. Nws cov ntsiab lus tseem ceeb yog nwskev tsim kho, muaj zog, thiab ua tau zoo nyob rau hauv kev kub siab thiab kub, ua rau nws xaiv qhov tseem ceeb tshaj plaws zoo li cov fais fab nroj tsuag boilers thiab siab {{}} siab} pa taws kev lag luam hauv kev lag luam petrochemical.
Thaum sours, ib txwm ua kom muaj ntawv pov thawj cov ntaub ntawv sib piv cov qauv uas yuav tsum tau ua (GB 5310) thiab qib (20G).
