Raws li lub siab - qib, sib sib zog nqus {}}}} dcred steel phaj, thiab kev ua kom zoo dua qub, thiab cov khoom siv sib dhos zoo. Tag nrho cov txheej txheem, pib nrog steelmaking thiab txuas ntxiv los ntawm ntau yam dov, tsom mus rau kev ua kom haum, thiab cov txheej txheem kev ua kom zoo dua, thiab annetring micrealchure tswj. Cov hauv qab no yog cov ncauj lus kom ntxaws cov txheej txheem txaus:
1. Steelmaking: Tso lub hauv paus rau kev sib xyaw
DC06 yuav tsum tau ** ultra - cov pa roj hmab (C Yog li ntawd, cov txheej txheem steel
1. KUB Hlau Pretricement
Tshem tawm cov leej faj (s tsawg dua los yog sib npaug rau 0.010%) thiab phosphorus (p tsawg dua los yog sib npaug los yog sib npaug lossis sib npaug los tiv thaiv kev tsim ntawm rab cig.
2. Converter SMELTING
Molten hlau yog xyaw nrog seem steel thiab oxygen sab saum toj - tshuab kom txo cov pa roj carbon ntau rau 0.0.03% (pib decarburization). Lub manganese thiab lwm yam qauv txheej txheem raug tswj (mn tsawg dua lossis sib npaug rau 0.40%).
3. Rh lub tshuab nqus tsev ua kom huv si **
Ib tug txheej txheem tseem ceeb! Ntxiv Decarburization yog ua rau tsawg dua lossis sib npaug nrog 0.008% hauv ib puag ncig lub tshuab nqus tsev (lub tshuab nqus hluav taws xob tsawg dua lossis sib npaug ntawm 67 pa). Aluminium (ib qho ntau dua lossis sib npaug rau 0.015%) yog ib txhij ntxiv rau qhov kawg deoxidation, los tiv thaiv nitrogen {}}}} induced hnub nyoog tawv).
4. Nruam casting **
Lub tshuab ua kom huv yog pov rau hauv cov pob zeb (150-250mm tuab). Tsawg Superheat pouring thiab Electromagneting yog siv los tiv thaiv kev sib cais chaw thiab npuas, kom muaj kev sib xyaw sib txawv thoob plaws hauv lub ingot.
2. Kub Rolling: Npaj ntawm txias- rolled lub pob phaj
DC06 cold {{- Rolled puag lub hauv paus yuav tsum tau ua rau Microstration Microstructure thiab tsis muaj zog. Cov kauj ruam kub dov rau kev tswj cov dov thiab coiling kub:
1. Cov cua sov Slab
Nruam Nruam Slab yog rhuab nyob rau hauv lub cua sov rauv rau 1150-1250℃los xyuas kom meej homogenite nplej (kom zam dhau kev ua tau zoo thaum lub sijhawm dov).
2. Hneev Daus
Lub slab yog dov mus rau ib nrab bar nrog ib tuab ntawm 30 - 50mm. Ntau-dhau dov nrog tswj kev txo (15-25% txo ib daim pass) yog siv los tsoo cov nplej coarse.
3. Xov Xwm Dov
Lub nrab bar yog dov los ntawm xya nruam mills mus rau lub kub {{rolled sawb nrog ib tuab ntawm 2.0-4.0 hli. Kev tswj hwm qhov kawg dov ntsuas (850-900 degree) yog qhov tseem ceeb los xyuas kom meej tias cov hlau yog dov nyob rau hauv lub Austenite cheeb tsam {}}}}}}}}}}}}}}}}}}}}}}}}}}
Tom qab ua tiav yob, cov sawb yog sai sai txias rau 600 {{1,}} kev hloov pauv kub) siv Lasinar txias dej, thiab tom qab ntawd coiled rau hauv kub-rolled coil. Qhov ntsuas kub no txhawb nqa nag los nag los ntawm ferrite nplej, muab cov muag muag ua kom huv rau cov khoom txias txias.
III. Txias Rolling: Tswj Thickness Thiab Cov Khoom Zoo
Colding txias yog qhov txheej txheem tseem ceeb uas txiav txim siab cov tuab tuab thiab nto tas ntawm DC06 Hlau. Kev txo qis yob cov khoom ua tiav cov khoom siv ntxiv dag zog thiab cov tuab tuab:
1. ** Hold -}} rolled teil kev npaj **
Kub -} rolled chev nto yog ntxuav cov hlau oxide nplai (siv cov khoom siv roj ntsha
Tom qab pickling, lub srip nkag ntau {{0} sawv ntsug tandem txias (0.3 hli rau ntawm 2.0
- Key parameters: Rolling speed 800-1500m/min, rolling force 1000-3000kN, lubrication and cooling with rolling oil, and controlled strip surface roughness (Ra 0.4-1.6μm).
{- hom phiaj: Txhawm rau kom ua kom muaj cov qoob loo ntau los ntawm kev ua haujlwm tuab (± 0.01 hli) kom tau raws li qhov tseeb ntawm kev sib sib zog nqus daim duab.
IV. Annaling: Rov Kho Cov Yas thiab Txhim Kho Kev Ua Kom Zoo Sib Nqus
Tom qab dov tawm, cov sawb nce hauv hardness thiab txo qis hauv plixed vim yog txias ua hauj lwm tawv. Annealing yog qhov tsim nyog los ua kom muaj kev ntxhov siab thiab ua rau lub microstructure. Qhov no yog qhov tseem ceeb rau kev ua tiav siab elongation rau DC06:
1. Nruam Annaling (CApl lossis CGG Ntau Kab) **
DC06 feem ntau siv cov ntawv qhia txuas ntxiv (lwm txoj hauv kev rau kev ua phooj ywg Bell anchaling, uas yog qhov ua tau zoo dua thiab muab kev ua tau zoo ntxiv). Cov txheej txheem nkhaus tau muab faib ua plaub ntu:
{{0 {0} heching theem **: Cov sawb yog rhuab los ntawm chav kub txog 400-500 qib, maj mam nce qhov kub kom tsis txhob muaj kev ntxhov siab thermal.
- theem: Cua kub sai rau 750-800℃(siab dua cov recrystallize kub) kom puv cov nplej tawm los ntawm kev ua kom txias.
-}} Sawb yog muaj nyob rau ntawm 750-800℃los txhawb kev loj hlob ntawm cov nplej (nruab nrab grain loj dua 15-25μm).
{- txias teb: txias nrawm rau hauv qab no 200℃ua raws cov qauv ferrite thiab tiv thaiv carbide nag lossis tiv thaiv carbide los nag uas tuaj yeem txo cov viscation.
2. Tempering dov **
Tom qab annealing, lub sawb undergoes lub teeb dov (txo cov piv ntawm 0.5-3%) rau:
- Tshem tawm cov lus tshaj tawm -}}}}} }ders kab "thiab saum npoo av" thiab saum npoo degrom);
{{0} Txhim kho cov strip txoj kev ncaj (txhawm rau tswj cov kab kev hloov pauv) thiab qhov ua haujlwm yob cov txheej txheem, txhim kho cov txheej txheem txuas ntxiv).
V. Tiav: Ua kom muaj txiaj ntsig zoo kawg nkaus
1. ** SPLITTING / TRIMMING **
Splitting loj sawb rau mus rau hauv cov coils me (uas muaj 5-30 tons) raws li qhov xav tau los ntawm cov neeg siv khoom tawg thiab tsis xws luag los ntawm cov npoo strip kom ntseeg tau qhov tseeb dav.
2. Kev tshuaj xyuas thiab ntim **
Ntsis qhov tsis xws luag (khawb, pitting, thiab lwm yam) tau kuaj xyuas qhov ua kom qhov ntsuas online (xws li EDDY kev sim tam sim no). Cov txiaj ntsig tau tshwm sim yog muab coated nrog anti {2} RET} RET} READED ROJ THIAB NTAWV, thiab thaum kawg nyab xeeb nrog coil ntim cov kab xev kom tiv thaiv kev puas tsuaj thaum kev thauj mus los.
Ntsiab lus ntawm cov txheej txheem tseem ceeb
Cov tub ntxhais ntawm DC06 kev tsim khoom yog tag nrho - Cov txheej txheem tswj hwm ib puag ncig "tob}}} daim duab ua haujlwm":
{- muaj pes tsawg leeg sib xyaw xaus **: Ultra-} Cov pa roj carbon thiab txhuas qis rau lub hauv paus rau cov yas;
{{0- kub}- rolling kawg **: Tshuaj Coiling Kub tsim ib qho kev sib xyaw ua ke cov hluav taws xob ntau;
{{0-}- rolling kawg **: kev txo qis kom meej thiab muab lub zog tsav tsheb rau recrystallization;
{{0- annealing kawg **: Ua tiav Recrystallization thiab tshem tawm cov paib cov txiaj ntsig ua tiav cov txiaj ntsig qis thiab elongation siab.
Cov nyhuv synergistic ntawm cov txheej txheem no muab dc06 zoo heev sib sib zog nqus {1}