Yuav ua li cas zas / kawm yog rov ua kom ruaj ntseg kev nyab xeeb hauvNkoj nkojthiab offshore engineering
Hauv cov haujlwm tseem ceeb li ntug hiav txwv ua lag luam, ua haujlwm loj thiab loj. Niaj hnub no, peb yuav siv sijhawm sib sib zog nqus rau hauv ib qho tshwj xeeb steel encenered kom tiv taus heev kev ntxhov siab:Q355NBZ15Cov. Nws tsis tsuas yog muaj lub zog siab tus yam ntxwv ntawm Q355 series tab sis tseem muaj cov ntsiab lus zoo nkauj ua rau lamellar, signified los ntawm nws "Z15" kev tsim qauv. Qhov no ua rau nws mus -}} Xaiv rau cov engineers ntsib cov kev ua haujlwm tshaj plaws.
Hauv kev lag luam hnyav niaj hnub, welded pob qij txha nyob rau hauv tuab hlau daim hlau yog thaj chaw ntawm qhov kev ntxhov siab tshaj plaws thiab yog li, muaj peev xwm cov ntsiab lus tsis ua tiav. Thaum vuam -}}}}}}}}}}}}} Kev ntxhov siab ntxhov siab ua yuam kev mus rau phaj nto (nyob rau hauvZ - kev taw qhia), nws tuaj yeem ua rau muaj kev puas tsuaj loj uas hu ua "lamellar kua muag." Yuav kom kov yeej qhov kev sib tw tseem ceeb no,Q355NBZ15 Qis -} ally high - lub zogcov qauv hlau tau tsim.
I. Cov Qauv Tseem Ceeb: Tus Qauv Kev Tshawb Fawb 'ntawm Q355NBZ15
Q355nbz15 tsis muaj qhov zoo tib yamTxheej txheem steel.Nws cov kev ua tau zoo ntawm kev ua yeeb yam los ntawm cov qauv tsim qauv me me uas nruj me ntsis rau GB / T 1591-2018 lub teb chaws tus qauv.
Refined tshuaj lom neeg muaj pes tsawg leeg:
- Tsawg - carbon, siab -}} manganese tsim:Cov ntsiab lus carbon cov ntsiab lus yog nruj me ntsis tswj tau tsawg dua lossis sib npaug nrog 0.90% -1.65% manganese, tsim lub hauv paus ntawm lub zog zoo thiab muaj zog.
- Micro -} alloying technology:Cov tswv yim tshiab ntxiv ntawm micro - alloy ecoying ntsiab, thiab titanium (ti), ua raws li lub zog "grain confiner." Cov ntsiab lus no ua daim ntawv me me, inhibiting nplej kev loj hlob thiab ua kom muaj zog ua kom muaj zog, kev nruj me ntsis, thiab qaug zog tsis kam.
- Tshwj xeeb Purity:Cov ntsiab lus ntawm impurities li phosphorus (p) thiab Sulfur (cov) yog khaws cia ntawm qib qis (tsawg dua lossis sib luag rau 0.035%). Qhov no txo cov kev tsis zoo sab hauv thiab ua kom pom kev huv microstructure yuav tsum muaj rau cov khoom zoo tshaj plaws ...} kev qhia khoom.
- Advanced tsim cov txheej txheem:Cov hlau muab xa tawm hauv qhov qub (n) lossis cev tsis muaj zog. Cov txheej txheem kev kho cua sov no reliage sab hauv kev ntxhov siab sau cia thaum muaj microstre thiab zoo} Cov microstructizing, yog li ua kom zoo dua nws cov khoom siv tshuab tag nrho.
Ii. Kev Ua Haujlwm Benchmark: tsuas yog "Z15" li cas?
Daim ntawv qhia "Z15" yog qhov taw qhia tseem ceeb rau cov khoom siv hlau tsis kam los ntawm nws los ntawm {}}} {2} kev coj). Nws tshwj xeeb txhais tau tias tustxo thaj chaw hauv ib z - Kev qhia tensile xeem yuav tsum yog ntau dua los yog sib npaug rau 15%.
Qhov no txhais tau li cas? Thaum muaj kev sib koom ua ke welded yog raug rau tensile rog, Q355 tsis kam lees kua txob thiab tiv thaiv cov qauv ntawm "delaminating" los ntawm sab hauv. Cov cuab yeej no tseem ceeb ntawm cov txheej txheem tseem ceeb ntawm cov txheej txheem hluav taws xob zoo li cov ntu ntawm nkoj, cov kab mob siab rau hauv cov tshuab hluav taws xob, thiab txhawb nqa hydraulic.
Cov ntaub ntawv ua tau zoo:
- Paib lub zog:Loj dua los yog sib npaug rau 355 MPa (rau thickness tsawg dua los yog sib npaug rau 16mm), tswj lub zog loj dua los yog sib luag rau ntawm 275 mpa txawm nyob ntawm huab cua thickness ntawm 200 hli.
- Lub zog tensile:470-630 MPa, muaj ntau yam uas haum ntau yam qauv tsim cov kev xav tau.
- Tsawg - kub ceev:Raws li cov kev cuam tshuam nrog cuam tshuam lub zog nqus dej yuav tsum tau ua ntawm -}} 20℃(thiab qis dua), kom ntseeg tau txoj kev ntseeg tau.
III. Phau Ntawv Qhia Thov: Mastering Qhov Siab- Kev Ua Haujlwm Khoom
Cov ntaub ntawv zoo heev uas yuav tsum tau ua cov neeg ua haujlwm ua kom lawv lub peev xwm.
Siab - precision txiav:
- Ntshav / nplaim taws txiav:Preheating rau kwv yees li 100℃tau pom zoo kom tiv thaiv cov tawv tawv ntawm kev txiav ntug, uas tuaj yeem cuam tshuam rau kev fab xwm txheej ntxiv.
- Laser Txiav:Qhov zoo tagnrho rau daim hlau mus txog 40mm tuab, Laser txiav ua qhov ua kom tiav uas feem ntau yuav tsum tsis muaj cov txheej txheem theem nrab.
Xyaum txoj kev cai vuam:
- Tsawg nrees tawg:Nrog tus nqi roj carbon tsawg tsawg (cev) tsawg dua lossis sib npaug rau 0.43, cov hlau muaj kev pheej hmoo zoo tshaj plaws ntawm kev tawg.
- Vuam Consumables:Kev siv cov txuam nrog siab - Lub zog E50 series hluav taws xob yog pom zoo, nrog kev tswj kom nruj ntawm qhov kub siab rau qis dua 250 degree.
- Nondestructive Testing (NDT):Rau cov ntawv tseem ceeb ntawm cov phiaj tuab, ultrasonic kuaj (et) yog yuav tsum ua kom ntseeg tau sab hauv ntawm Weld Seam.
IV. Cov lus qhia hauv qab no: Ua lag luam hauv kev nyab xeeb thiab kev ntseeg tau
Ntsuas tus nqi thiab kev ua tau zoo yog qhov tseem ceeb thaum xaiv cov khoom siv.
Tus nqi -} dencen hlob tshiab:Nyob rau hauv kev nyab xeeb - tseem ceeb zones qhov twg z {leth} Hais lus ib txwm muaj, hloov chaw ua haujlwm tsis muaj l355nbz15 sawv cev rau kev nqis peev. Thaum tus nqi yuav nyob ib ncig ntawm 8% siab dua, qhov kev tshem tawm nce ntxiv hauv kev nyab xeeb yog qhov tsis muaj peev xwm.
Daim ntawv pov thawj thiab kev paub tseeb:Ib txwm xav tau daim ntawv pov thawj zeb xeem MILL (MTC) los ntawm tus neeg xa khoom, ua kom nws tau qhia meej rau FAST cov lus ceeb toom rau Z15 kev ua haujlwm. Rau loj - ntim txiav txim, commissioning ib feem peb {}}}}} Kev tshuaj ntsuam yog qhov kev coj ua zoo tshaj plaws.
Tom Qab: Q355 Tsev Neeg Hlau
Q355 yog ib tse neeg dav dav ntawm siab- lub zog steels uas xav tau raws ntau qib, thiab z- kev ua tau zoo.
Los ntawm Qib Zoo:Q355B, Q355C, Q355D, Q355E (nrog zuj zus zoo cov kev cuam tshuam nyuaj).
Los ntawm kev xa khoom:Q355N (normalized), Q355M (Thermo -}}} kev tswj hwm ua tiav).
Los ntawm z - kev ua haujlwm:Q355, Q35, Q35, Q35, Q35 (nrog zuj zus Lamella kev txhoj dej tsis kam).
Q355NBZ15 yog lub hnub qub ua yeeb yam hauv tsev neeg no, sib txuas ua ke zoo heev qis- kub shadness (n rau -20℃kev ua txhaum.
Q355nbz15 yog ntau tshaj li yog qib steel; Nws yog cov tim khawv rau niaj hnub engineering tsis muaj kev nyab xeeb ntawm kev nyab xeeb thiab kev ntseeg tau. Los ntawm nws cov kev tshawb fawb txog nws cov qauv kev tsim kho, nws muab kev daws teeb meem zoo rau kev sib tw ntawm Lamelluilation, muab cov khoom lag luam pov tseg thoob ntiaj teb, thiab cov khoom siv hnyav.
