Q245R txhais li cas?
Q245Ryog tus qauv Suav tshwj xeeb carbon steel phaj siv rau kev tsim boilers thiab cov hlab ntsha siab, ua raws li tus qauv GB / T 713. Nws nta lub zog tawm ntawm 245 MPa (𝑄245), tsim los rau kev ua haujlwm ntev hauv siab- muaj cov khoom siv. Nws yog dav siv nyob rau hauv roj av, tshuaj, thiab fais fab kev lag luam, muab zoo vuam kev ua tau zoo thiab lub zog.
Q245Ryog ib lub siab- zoo carbon steel phaj tshwj xeeb rau "R" (Pressure Vessel) kev faib tawm raws liGB/T 713txheem. Nws yog cov khoom siv sib npaug ntawm cov khoom siv dag zog nrog kev tsim ntau yam, muab qhov tsawg kawg nkaus ntawm 245 MPa thiab lub zog tensile uas tuaj yeem ncav cuag 520 MPa. Vim tias nws yog cov pa roj carbon monoxide, nws tsis muaj cov khoom tseem ceeb ntawm cov khoom siv kim heev xws li chromium lossis molybdenum, ua rau nws xaiv ib puag ncig thiab kev lag luam ruaj khov rau ntau yam kev lag luam tso tsheb hlau luam, qis - siab boilers, thiab cov khoom siv thermal pauv.
Cov yam ntxwv tseem ceeb
Zoo heev Redistribution Stress:Cov khoom siv siab plasticity tso cai rau nws rov faib cov kev ntxhov siab hauv zos nyob ib puag ncig nozzles thiab pob qij txha.
Tau tshaj Submerged Arc Vuam (SAW):Zoo kawg nkaus haum rau siab -kev ua tau zoo, sib sib zog nqus- vuam siv nyob rau hauv lub nkoj plhaub tsim.
Thermal Aging Stability:Khaws nws cov khoom siv kho tshuab txawm tias tom qab tau tuav ntawm kev ua haujlwm kub rau lub sijhawm ntev.
High Impact Zog Absorption:Muaj peev xwm nqus tau lub zog tseem ceeb thaum lub sij hawm dhau - kev ntxhov siab los tiv thaiv kev puas tsuaj loj.
Txhim khu Thickness kam rau ua:Tsim kom nruj me ntsis cov qauv kom ntseeg tau tias lub nkoj ua tau raws li nws cov qauv phab ntsa thickness.
Qib Qib
Q:Stands rau Yield Strength.
245:Yam tsawg kawg yield zog ntawm 245 MPa.
R:Stands rau Lub Nkoj Siab.
Kev sib piv (vs. A285 Qib C)
Lub zog yam tsawg kawg nkaus:Q245R (245 MPa / ~ 35.5 ksi) yog me ntsis zog dua A285 Gr C (205 MPa / 30 ksi).
Thickness txwv:A285 Gr C yog txwv rau 2 nti (50mm); Q245R tuaj yeem ua tau ntau dua thicknesses rau cov hlab ntsha hnyav.
Tshuaj Purity:Q245R feem ntau muaj cov cai nruj dua rau Phosphorus thiab Sulfur piv rau cov laus A285 specification.
Cov ntsiab lus siv:A285 yog tus qauv qub "legacy" feem ntau siv rau cov tso tsheb hlau luam yooj yim; Q245R yog tus qauv niaj hnub siv rau ntau hom kev lag luam boilers.
Daim Ntawv Thov Kev Sib Tham
Spherical Gas Holders:Cheebtsam rau loj -scale "Horton Spheres" siv nyob rau hauv cov tshuaj cog cia.
Sterilization Retorts:Cov chav siab loj siv hauv kev lag luam canning los ua noj thiab ua kom tsis muaj zaub mov.
Expansion Tanks:Siv nyob rau hauv kaw- lub tshuab cua sov thiab cua txias kom haum raws li qhov hloov pauv.
Pulp Digesters:Cov tso tsheb hlau luam loj loj siv hauv cov ntawv zeb los kho cov ntoo pulp.
Vacuum Chambers:Loj -tej cov hlab ntsha uas tsim los tiv thaiv sab nraud rau kev ziab lossis kev sim cov txheej txheem.
Qhov txawv ntawm Q245R thiab Q345R yog dab tsi?
Q245R thiab Q345R yog ob qho tib si Suav siab lub nkoj steel daim hlau (R-Rongqi, lub ntsiab lus ntawm lub nkoj), tab sis lawv txawv feem ntau nyob rau hauv lub zog, tshuaj muaj pes tsawg leeg, thiab daim ntawv thov haum.Q345Rmuaj zog yield zog (Ntau dua los yog sib npaug rau 345 MPa) thiab Mn cov ntsiab lus piv rauQ245R(Ntau dua lossis sib npaug rau 245 MPa), muab lub zog zoo dua, thaum Q245R muaj kev tiv thaiv corrosion zoo dua hauv cov chaw tshwj xeeb xws li ntub dej 𝐻2𝑆.
Dab tsi yog cov khoom sib npaug ntawm Q245R?
Q245R yog Suav GB 713 tus qauv siab lub nkoj steel, nrog nws qhov sib npaug thoob ntiaj teb ze tshaj plaws.ASTM A516 Qib 60. Nws yog feem ntau siv carbon steel rau boilers, siab hlab ntsha, thiab cia tanks nyob rau hauv cov roj av thiab tshuaj industries. Lwm qhov sib npaug lossis cov qib zoo sib xws suav nrog ASTM A285 Qib C.
Puas yog Q245R carbon steel?
Yog lawm, Q245R yog hom Suav Tebchaws Suav (GB 713)carbon hlautshwj xeeb tsim rau boilers thiab siab hlab ntsha. Nws yog qis-carbon, siab- toughness, thiab weldable steel (feem ntau hu ua "mild steel" los yog "boiler steel" phaj) siv rau fabricating intermediate- cov thawv ntim thiab cov cua kub exchangers.
Tshuaj muaj pes tsawg leeg ntawm Q245R phaj
| C | Si | Mn | P | S | Al |
| 0.20 max. | 0.35 max. | 0.50-1.00 | 0.025 max. | 0.015 max. | 0.020 min. |
Mechanical Properties ntawm Q245R Phaj
| Thickness (hli) | |||||
| Q245R | >3 Tsawg dua los yog sib npaug rau 16 | >16 Tsawg dua lossis sib npaug li 36 | >36 Tsawg dua lossis sib npaug li 60 | >60 Tsawg dua los yog sib npaug rau 100 | >100 |
| Yield zog (Ntau dua lossis sib npaug rau Mpa) | 245 | 235 | 225 | 205 | 185 |
| Tensile zog (Mpa) | 400-520 | 390-510 | 380-500 | ||
1. Q245R ua haujlwm li cas ntawm qhov kub siab?
Q245R ua tau zoo ntawm nruab nrab mus rau qhov kub thiab txias, nrog kev ua haujlwm zoo rau thermal degradation. Nws feem ntau yog siv rau hauv cov ntawv thov uas qhov kev ua haujlwm kub nce mus txog 450℃(840℃F). Txawm hais tias nws tsis yog tsim los rau siab - daim ntawv thov kub siab tshaj 500 degree, nws cov khoom, xws li lub zog thiab elongation, nyob ruaj khov nyob rau hauv cov kev khiav hauj lwm kub ntau yam ntawm feem ntau cov txheej txheem.
2. Cov kev lag luam twg siv Q245R steel?
Q245R feem ntau yog siv rau hauv kev lag luam uas xav tau cov hlab ntsha siab, boilers, thiab lwm yam khoom siv raug kub siab thiab nruab nrab kub. Cov kev lag luam no suav nrog kev tsim hluav taws xob, kev ua tshuaj lom neeg, roj thiab roj, thiab petrochemicals. Nws cov weldability thiab lub zog ntawm qhov kub siab ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev tsim cov hlab ntsha thiab cov tso tsheb hlau luam hauv cov kev lag luam no.
3. Cov tshuaj muaj pes tsawg leeg ntawm Q245R yog dab tsi?
Cov tshuaj muaj pes tsawg leeg ntawm Q245R steel feem ntau suav nrog cov pa roj carbon (0.18-0.22%), manganese (0.60-1.20%), silicon (0.15-0.30%), phosphorus (tsawg dua lossis sib npaug li 0.035%), sulfur (tsawg dua lossis sib npaug li 0.035%) tshaj li 0. Qhov sib npaug yog hlau (Fe). Qhov kev sib xyaw no ua kom muaj kev sib xyaw ua ke zoo ntawm lub zog, weldability, thiab formability, ua Q245R haum rau cov hlab ntsha siab thiab boilers.
4. Q245R piv rau Q345R li cas?
Q245R thiab Q345R yog ob qho tib si qis- alloy steels siv hauv kev siv lub nkoj siab, tab sis Q345R muaj lub zog ntau dua ntawm 345 MPa. Qhov no ua rau Q345R haum rau siab dua lossis xav tau ntau dua. Q245R, thaum tseem yog cov khoom siv ruaj khov, feem ntau yog siv rau cov ntawv thov tsawg dua piv rau Q345R. Q345R muaj lub zog zoo tag nrho tab sis tej zaum yuav kim dua.
5. Lub zog tawm ntawm Q245R yog dab tsi?
Lub zog tawm ntawm Q245R feem ntau yog nyob ib ncig ntawm 245 MPa (35 ksi). Qhov nruab nrab tawm los lub zog no tso cai rau nws tiv taus lub siab tseem ceeb hauv qhov qis- qhov kub thiab txias yam tsis ua haujlwm. Qhov no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov hlab ntsha siab thiab lwm yam kev siv cov txheej txheem uas yuav tsum tau muaj zog thiab tawv nqaij nyob rau hauv cov xwm txheej cryogenic.
6. Dab tsi yog lub luag haujlwm ntawm manganese hauv Q245R?
Manganese nyob rau hauv Q245R plays lub luag haujlwm tseem ceeb hauv kev txhim kho cov hlau qhov toughness thiab hardness. Nws kuj tseem txhim kho cov hlau muaj peev xwm tiv thaiv oxidation thaum kho cua sov. Manganese yog ib qho tseem ceeb ntawm cov khoom siv alloying uas pab ua kom cov khoom muaj zog, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias, thiab txhawb cov weldability ntawm Q245R, ua rau nws zoo tagnrho rau kev tsim cov hlab ntsha.
7. Qhov siab tshaj plaws thickness ntawm Q245R yog dab tsi?
Q245R steel feem ntau tuaj yeem siv rau hauv cov tuab xws li 6 hli txog 50 hli rau cov hlab ntsha siab. Rau cov ntu tuab, kev kho cua sov ntxiv, xws li normalizing lossis annealing, tej zaum yuav tsim nyog los xyuas kom meej cov khoom zoo ib yam. Cov khoom siv tuaj yeem siv ntau yam thicknesses nyob ntawm seb qhov kev xav tau tshwj xeeb ntawm lub nkoj siab lossis kev siv boiler.
Yog xav paub ntxiv txog GNEE cov khoom siv hlau, tiv tauj peb ntawm info@gneesteels.com. Peb tos ntsoov yuav ua haujlwm nrog koj.
