Q345R yog Suav tus txheej txheem siab lub nkoj steel phaj, uas yog tsawg- alloy siab{1}} lub zog steel. Nws yog dav siv nyob rau hauv kev tsim cov hlab ntsha xws li boilers thiab cia tank, nrog zoo toughness thiab weldability hloov mus rau hnyav ua hauj lwm tej yam kev mob.
Q345R Steel Phaj Chemical Composition:
| Qib Steel | C % | Si% | Mn% | Cu% | Ni% | Cr% | Mo% | V % | Ti % | Alt% | P % | S % | Nb |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Q345R | 0.20 | 0.55 | 1.2-1.7 | 0.30 | 0.30 | 0.30 | 0.08 | 0.050 | 0.030 | 0.020 | 0.025 | 0.010 | 0.050 |
Q345R Steel Phaj Mechanical Property:
| Qib Steel | Thickness (hli) | Min Yield | Tensile | Elongation | Min Impact Zog | |
|---|---|---|---|---|---|---|
| Qib | Min J | |||||
| Q345R | 3-16 | 345 Mpa | 510-640 Mpa | 21% | 0 | 41J |
| 16-36 | 325 Mpa | 500-630 Mpa | 21% | 0 | 41J | |
| 36-60 | 315mpa ua | 490-620 Mpa | 21% | 0 | 41J | |
| 60-100 | 305mpa ua | 490-620 Mpa | 20% | 0 | 41J | |
| 100-150 | 285mpa ua | 480-610 Mpa | 20% | 0 | 41J | |
| 150-250 | 265mpa ua | 470-600 Mpa | 20% | 0 | 41J | |
Q345R Steel Phaj Vuam Feature:
Thaum yield ratio tsawg dua los yog sib npaug rau 0.75, ntau tshaj 0.8 yuav muaj kev pheej hmoo siab ntawm kev tawg. Preheating ntawm steel phaj vuam tsis tas yuav tsum tau. Thaum steel phaj thickness tsawg dua los yog sib npaug rau 34, preheat rau 100 ~ 150℃thaum steel phaj thickness yog> 34, ntxiv rau tshem tawm kev ntxhov siab yog xav tau tom qab vuam kev kho cua sov, cua kub ntau li 600 ~ 640 degree, feem ntau cua txias tom qab lub tshav kub preservation rauv txias kom qis dua 400 degree.
Thaum cov pa roj carbon ntsiab lus ntawm ib feem tsawg kawg nkaus Q345R steel vuam yooj yim tsis muaj kev txwv nruj ntawm kab, rau nws yog overheating rhiab heev tsis siab, txias cracking nyiam yog tsawg, tab sis rau qhov zoo ntawm plasticity thiab toughness overheated cheeb tsam, me me linear zog yog zoo dua.
Thaum vuam Q345R steel ntawm cov ntsiab lus carbon nyob rau sab siab, rau lub hardening tendency nce, cov ntsiab lus ntawm martensite nce, nws yuav ua rau cov hlua cable zog txias cracking nyiam, embrittlement ntawm overheated cheeb tsam kuj yuav loj heev, qhov teeb meem no yog offline zog ib feem loj dua.
Q345R Steel Phaj Kub Txwv Vim Phaj Thickness:
Hlau phaj thickness ＜6mm: tsis muaj qhov cuam tshuam, siv qhov ntsuas kub qis dua yog - 20℃.
Hlau phaj thickness 6 ~ 20 hli: cuam tshuam kev ntsuas ntawm 0 degree, kub qis qis yog - 20℃.
Hlau phaj thickness 20 ~ 25 hli, cuam tshuam kev ntsuas ntawm 0 degree, kub qis qis yog - 10℃.
Hlau phaj thickness 25 ~ 200 hli, cuam tshuam kev ntsuas ntawm 0 degree, kub qis qis yog 0 degree.
Hlau phaj thickness> 20 ~ 30 hli kub dov steel phaj thickness tswj dov lub xeev; muab daim ntawv cog lus lav - 20℃cuam tshuam kev ntsuas, ntsuas kub rau - 20℃.
Hlau phaj thickness> 20 ~ 200 hli, normalizing lub xeev; muab daim ntawv cog lus lav - 20 degree, qhov ntsuas kub qis qis yog - 20℃.
Cov ntawv thov siv
1.Petrochemical & Chemical Industries
Q345R yog dav siv rau kev tsim khoom siv uas khaws lossis ua cov kua dej thiab cov pa hauv siab.
Cov nkoj siab: Reactors, separators, thiab kub exchangers.
Cia Tank: Roj, roj, thiab roj av liquefied roj av (LPG) tso tsheb hlau luam thiab lub tank kheej kheej.
Piping Systems: Industrial pipelines thiab cov khoom sib txuas.
2.Lub zog tiam
Cov hlau muaj peev xwm ua tau zoo nyob rau hauv qhov kub siab ua rau nws tsim nyog rau cov nroj tsuag fais fab.
Boilers: High-siab boilers thiab boiler nruas.
Cov cuab yeej pabcuam: Cheebtsam rau chav turbines thiab cov khoom siv hluav taws xob nuclear (tsis yog-siab- kub, tsis yog- siab- cov nkoj siab).
3.Structural & General Engineering
Vim nws cov khoom siv kho tshuab zoo, suav nrog lub zog siab thiab weldability, Q345R kuj tseem siv rau hauv ntau yam kev siv, txawm hais tias nws qhov kev siv tseem ceeb tseem nyob hauv siab -txog teb.
Kev tsim kho: Kab teeb, kab, thiab thav duab rau siab -cov tsev nce siab thiab cov chaw tsim khoom lag luam.
Cov choj: Main girders thiab kev txhawb nqa.
Hnyav Machinery: Load-cov khoom siv rau cov cranes thiab mining machinery.
Yog tias koj muaj qhov yuav tsum tau ua rau Q345R, peb txais tos koj nug. GNEE tuav cov khoom lag luam loj uas feem ntau siv cov qib siab zog steel rau koj xaiv.Rau cov ncauj lus kom ntxaws txhua yam khoom, tshuaj lom neeg muaj pes tsawg leeg, thiab cov ntaub ntawv kev, nrog rau cov qauv dawb, thov hu rau peb lub Hoobkas tam sim ntawd. Peb muab cov nqi sib tw, ruaj khov zoo, thiab kev pabcuam tshaj lij. Email: beam@gneesteelgroup.com.
Kev kho cua sov dab tsi yog Q345R feem ntau raug rau?
Q345R feem ntau raug rau normalizing kev kho cua sov. Cov txheej txheem no refines lub grain qauv, txhim kho cov hlau lub toughness thiab lub zog, thiab xyuas kom meej stability ntawm nws txhua yam khoom.
Qhov txawv ntawm Q345R thiab Q345B yog dab tsi?
Q345R yog rau cov hlab ntsha siab, hais txog kev cuam tshuam toughness thiab weldability rau siab -cov kabmob. Q345B yog cov qauv hlau dav dav, nrog cov kev xav tau qis dua ntawm kev cuam tshuam toughness thiab tsis muaj lub nkoj siab - ntawv pov thawj tshwj xeeb.
Yuav tshuaj xyuas qhov zoo ntawm Q345R steel daim hlau li cas?
Kev tshuaj xyuas zoo ntawm Q345R suav nrog tshuaj lom neeg kev tshuaj ntsuam xyuas, kev ntsuas cov cuab yeej cuab yeej (tensile, yield, cuam tshuam), kuaj ultrasonic flaw, tshuaj xyuas qhov zoo, thiab lwm yam, kom ntseeg tau tias nws ua tau raws li tus qauv yuav tsum tau ua.
Qhov ceev ntawm Q345R yog dab tsi?
Qhov ceev ntawm Q345R yog li 7.85 g / cm³, tib yam li cov pa roj carbon zoo tib yam. Tus nqi ntom ntom no yog siv dav hauv kev xam qhov hnyav thiab kev tsim qauv ntawm cov hlab ntsha siab thiab cov khoom muaj feem xyuam.
Q345R puas tuaj yeem siv los ua boiler nruas?
Yog lawm, Q345R yog ib qho khoom siv rau boiler nruas. Nws zoo siab -kub tsis kam, siab- bearing peev thiab toughness tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm boiler nruas nyob rau hauv qhov kub thiab txias.
Dab tsi yog qhov yuav tsum tau elongation ntawm Q345R?
Qhov tsawg kawg nkaus elongation ntawm Q345R yog 21% (tom qab tawg). Elongation qhia txog cov yas deformation muaj peev xwm ntawm cov hlau ua ntej tawg, uas yog ib qho tseem ceeb rau kev zam tsis txhob poob siab ntawm cov hlab ntsha.
Puas yog Q345R yog qis- hlau alloy?
Yog lawm, Q345R yog qis- alloy siab- lub zog steel. Nws cov ntsiab lus alloy (feem ntau yog manganese) tsawg dua 5%, uas txhim kho lub zog ntawm cov pa roj carbon steel thaum tswj kev ua haujlwm tau zoo thiab tus nqi- ua tau zoo.
Dab tsi yog qhov zoo ntawm qhov yuav tsum tau ua ntawm Q345R?
Q345R yuav tsum tsis muaj kab nrib pleb, folds, delaminations, nti thiab lwm yam tsis xws luag. Qhov chaw me me tuaj yeem kho tau los ntawm kev sib tsoo, tab sis lub thickness tom qab kho yuav tsum ua tau raws li tus qauv.
Q345R puas tuaj yeem siv rau hauv kev lag luam tshuaj?
Yog lawm, Q345R tau siv dav hauv kev lag luam tshuaj. Nws yog qhov tsim nyog rau kev tsim cov tshuaj reactors, tso tsheb hlau luam rau cov xov xwm corrosive (nrog rau kev tiv thaiv - kev kho corrosion) thiab lwm yam khoom siv.
Lub hardness ntawm Q345R yog dab tsi?
Brinell hardness (HB) ntawm Q345R feem ntau yog nyob nruab nrab ntawm 137 thiab 179. Hardness yog ib qho tseem ceeb qhia txog kev hnav tsis kam thiab lub zog, thiab nws cov nqi muaj feem xyuam rau cov txheej txheem kho cua sov.