Smelting tswj technology
Ib txwmenameled hlausiv aluminium-tua steel thiab ultra-low carbon steel muaj pes tsawg leeg systems. Cov hlau yog cov ntshiab huv thiab muaj ob peb theem thib ob, ua rau tsis zoo hydrogen cia muaj peev xwm thiab ntsuas tsis kam. Raws li cov ntaub ntawv tshawb fawb, qhov sib ntxiv ntawm qee cov ntsiab lus alloying rau enameled steel tuaj yeem tsim nyog txhim kho cov phaj hlau tiv thaiv kev ua haujlwm, tab sis nws tseem tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm txoj kev sib sau; Ntxiv mus, vim muaj cov ntsiab lus carbon siab hauv cov hlau, cov khoom tom qab tua hluav taws thiab enameling tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua. Cov khoom niaj hnub enamel muaj cov kev xav tau zoo rau kev tiv thaiv corrosion, kub tsis kam thiab zoo nkauj tsos. Ti-SBN (titanium-sulfur-boron-nitrogen) kev sib xyaw microalloying muaj pes tsawg leeg kawm nyob rau hauv tsab xov xwm no, ua ke nrog kev tswj cov khoom siv thiab cov khoom, yog qhov tsim nyog rau kev tsim ntau ntawm cov nplua ob-theem hais (qhov ceev ncav cuag. 1020 ~ 1021 particles/square meter) thiab loj dua Cov kev ntxhib los mos muaj zog tsis tsuas yog txhim kho cov hydrogen cia muaj peev xwm thiab nplai tawg tsis kam, tab sis kuj muaj txiaj ntsig zoo rau kev sib sau.
Ti-SBN composite microalloying muaj pes tsawg leeg
Tom qab hydrogen atoms nyob rau hauv cov hlau yog "raug" los ntawm lub thib ob theem nyob rau hauv lub microstructure, nws yog feem ntau nyuaj rau khiav. Hom thib ob no feem ntau hu ua ib qho irreversible hydrogen trap. Ti keeb thiab nws cov theem precipitated muaj qhov muaj zog tshaj affinity nrog hydrogen atoms, yog li Ti feem ntau yog siv los ua hydrogen ntxiab tsim cov khoom hauv enamel steel. Los ntawm qhov kev xav ntawm formability ntawm enamel steel phaj, theem ob hauv cov qauv muaj kev cuam tshuam zoo rau lub formability. Tsis tas li ntawd, kev ruaj ntseg ntawm theem thib ob kuj yog qhov tseem ceeb cuam tshuam rau cov khoom siv kho tshuab thiab ntsuas qhov tsis kam ntawm enameled steel thaum lub sij hawm enameling txheej txheem. Yog li ntawd, los ntawm cov txheej txheem tsim qauv tsim thiab kev ua kom zoo, qhov ntau, morphology thiab kev ruaj ntseg ntawm theem thib ob hauv microstructure tuaj yeem tswj tau. Txoj kev tshawb no nthuav tawm cov pa roj carbon tsawg-tsawg Ti-SBN txias-dov strip steel chemical muaj pes tsawg leeg rau enamel. Raws li kev tsim cov pa roj carbon tsawg tsawg, Ti microalloying yog ua los tswj cov ntsiab lus N, B thiab Mn / S (manganese / sulfur). ) Sib piv. Cov yam ntxwv sib cais ntawm B ntawm thaj tsam ntawm cov qoob loo yog siv los cuam tshuam cov kev daws teeb meem thiab kev nthuav tawm ntawm cov pa roj carbon atoms thiab txhawb cov nag lossis daus ntawm ntau cov nplua cementite hauv cov nplej. B thiab N sib xyaw ua ke hauv cov cementite zoo los ua ob-theem hais thiab cov theem ua ntej ua ntej, ua rau cov phaj hlau muaj cov nyhuv hydrogen zoo.
Lub koom haum khoom siv thiab kev tswj xyuas kev ua haujlwm
Raws li ultra-low carbon Ti-SBN composite microalloying muaj pes tsawg leeg system, cov khoom siv sib xws thiab kev tswj xyuas kev ua haujlwm tau tsim los daws qhov tsis sib haum xeeb ntawm kev tsim thiab nplai tsis kam ntawm enameled steel, nrog rau cov teeb meem tseem ceeb ntawm lub zog txo tom qab enameling. . Cov txheej txheem txheej txheem muaj kev cuam tshuam zoo rau tus cwj pwm nkag mus rau hydrogen thiab hydrogen cia cov yam ntxwv ntawm cov hlau. Kev ntsuas xws li nce qhov kub thiab txias, txo qhov coiling kub, thiab qis-kub mus ntev annealing tuaj yeem ua rau kom lub sij hawm nkag mus ntawm hydrogen hauv steel phaj; noj cov kev ntsuas xws li ua kom txias dov siab ntsuas xws li txo tus nqi, nce lub sij hawm nkag ntawm hydrogen nyob rau hauv steel phaj, thiab txo cov hydrogen diffusion coefficient yuav tau ib tug muaj zog kev ntxhib los mos, uas yog zoo rau stamping txoj kev. Los ntawm kev txheeb xyuas qhov cuam tshuam ntawm cov txheej txheem kub dov, txheej txheem txias dov, nruam annealing thiab tswb annealing txheej txheem ntawm qhov ntsuas tsis kam thiab cov khoom siv ntawm cov hlau enamel, cov txheej txheem kub dov thiab txias dov annealing txheej txheem tau txiav txim siab [7]. Cov kev tshawb fawb tau pom tias tsim nyog nce cov ntsiab lus ntawm S, Mn thiab N, thiab ntxiv cov kab ntawm B, tuaj yeem txhim kho kev ua haujlwm ntawm enamel. Piv nrog rau B-dawb steel, tsis tu ncua annealed phaj ntawm B-muaj enamel steel tau txais lub zog qis zog. Txawm hais tias lub zog hardening Performance index (n) tau txo qis, cov yas strain ratio (r) thiab elongation tom qab tawg yog siab, thiab tag nrho cov kev ua tau zoo yog zoo heev. Kev tshawb fawb ntawm cov txheej txheem kub dov qhia tau hais tias thaum lub billet yog rhuab mus rau 1200-1250 degree thiab tuav rau ntau tshaj 120 feeb, cov ntxhib precipitates nyob rau hauv lub billet yaj mus rau theem ob hais. Tom qab ntau dhau ntawm dov, lub thickness hloov ntawm 23mm mus rau 4mm, thiab txheej txheej txias Lub coiling kub yog 680 ~ 750 degree. Thaum lub sij hawm kub-kub coiling thiab txias txheej txheem, dislocation ceev nyob rau hauv cov hlau txo, uas yog conducive rau re-precipitation ntawm carbon thiab nitride, thiab yog conducive rau lub aggregation thiab loj hlob ntawm lub thib ob-theem hais nyob rau hauv cov hlau. Thaum qhov txias dov txo tus nqi yog 80%, qhov loj dua ob-theem hais los nag hauv cov khoom siv kub dov yog ntxiv crushed thiab ua me me. Kev tshawb fawb ntawm cov txheej txheem nruam annealing qhia tau hais tias lub sij hawm luv luv nruam annealing ntawm qhov kub thiab txias yog qhov tsim nyog kom tau txais ib qho kev ntxhib los mos, uas muaj txiaj ntsig zoo rau stamping txoj kev; thaum lub "zoo-grained qauv + saw-zoo li degraded pearlite" thiab zoo dispersed pearlite tau los ntawm lub sij hawm ntev rwb thaiv tsev ntawm qhov kub thiab txias Cementite hais yog ntau pab tau nyob rau hauv txo diffusion tus nqi ntawm hydrogen nyob rau hauv steel thiab kev txhim kho cov anti-scaling kev ua tau zoo ntawm enameled hlau. Thaum lub sij hawm lub tswb annealing txheej txheem, raws li lub annealing kub nce thiab tuav lub sij hawm nce, cov loj ob-theem hais nyob rau hauv lub txias dov phaj txuas ntxiv decompose thiab refine, thiab ib feem tsim tshiab Ti carbonitrides ntawm kub kub. Tom qab ua tiav, precipitate hais nrog ib tug loj ntawm 25 mus rau 50 nm yog dispersed nyob rau hauv lub txias yob, uas yog Ti carbonitrides, carbon sulfides, manganese sulfide, thiab lwm yam. Ob chav electrolytic cell txoj kev yog siv los ua ib tug scale explosion resistance test ntawm 0.80mm. sib sib zog nqus-draw txias-dov enamel steelDC 03 EK,thiab kev tiv thaiv kev tawg rhiab heev TH tus nqi tau txais los ntawm 18.74 min / mm2. Raws li kev sim dav dav, thaum TH Ntau dua lossis sib npaug ntawm 6.7 min / mm2, enameled steel muaj qhov ntsuas qhov tawg tsis kam. Tsis tas li ntawd, vim hais tias cov tshuaj muaj pes tsawg leeg tau txais kev sib xyaw micro-alloying, thermal stability ntawm cov txheej txheem nag lossis daus yog muaj zog heev, thiab lub zog txo tus nqi ntawm cov hlau phaj tom qab sintering yog nyob rau hauv 30 MPa.
Precise tswj tshuab rau nqaim muaj pes tsawg leeg smelting
Cov ntsiab lus siab ntawm Ti nyob rau hauv ultra-low carbon Ti-SBN composite microalloying tivthaiv system ua rau lub txias-dov enamel hlau tau yooj yim sau thaum lub sij hawm casting txheej txheem, cuam tshuam rau kev ua tau zoo thiab ruaj khov ntau lawm. Qhov no yog ib qho teeb meem tshwm sim hauv kev lag luam metallurgical. Ib tug tshwj xeeb ladle sab saum toj slag modifier yog siv, thiab ib tug nitrogen-nce thiab oxygen-tswj txheej txheem yog siv los tsim ib tug tshwj xeeb kev sib raug zoo ntawm tus nqi ntawm lub ladle sab saum toj slag modifier thiab cov pa tshuab RH (nqus ncig degassing refining rauv). High-Ti enamel yog cam khwb cia nrog hlau kom txaus txaus. Qhov teeb meem tau txhim kho zoo heev. Kev ua tau zoo ntawm kev nruam casting ntawm txias-dov enamel steel tau zoo heev, thiab nruam casting ntawm 5 furnaces tuaj yeem ua tiav. Txhawm rau kom ua tiav qhov tseeb thiab ruaj khov tswj cov khoom siv smelting nrog cov ntsiab lus tsis tshua muaj carbon tsawg, qhov project no ua cov kev tshawb fawb txog RH carburization thiab cov cai carburization ntawm cov txheej txheem nruam casting. Yuav kom tau txais cov hlau molten ntshiab thaum lub sij hawm steelmaking, nws yog ib qho tsim nyog yuav tsum nruj me ntsis tswj cov pa roj carbon thiab oxygen cov ntsiab lus tawm ntawm lub converter, txo qhov siab ntawm RH txheej txheem, thiab txhim kho qhov zoo ntawm cov hlau molten. Tsis tas li ntawd, txhawm rau tswj hwm cov ntsiab lus carbon zoo, hauv cov txheej txheem nruam nruam, cov khoom siv magnesia txheej yog siv los ua cov khoom siv refractory ntawm tundish ua hauj lwm txheej, thiab ultra-low carbon tiv thaiv slag thiab alkaline npog tus neeg saib xyuas yog siv los tswj nruj heev. carbonization ntawm cov hlau molten thaum lub sij hawm nruam casting txheej txheem. kom muaj nuj nqis. Los ntawm cov kev ntsuas saum toj no, tus nqi ntawm cov pa roj ntxiv thaum lub sij hawm nruam casting txheej txheem yog tswj hauv qab 6 × 10-6.
Anti-scaling performance testing technology thiab pab kiag li lawm
Qhov project tsim ib qho kev sib xyaw ua ke thiab cov cuab yeej siv rau kev ntsuas electrochemical ntawm hydrogen permeability ntawm steel siv rau enamel, nrog rau kev simulation simulation txoj kev thiab sampling txoj kev rau lub anti-scale tawg kev ua tau zoo ntawm roj shielded ion vuam txheej thiab hlawv enamel ntawm loj. - loj steel phaj. Ob lub tshuab tshawb nrhiav tau siv rau cov khoom siv tiag tiag. Nws yog siv los ua ke nrog qhov ntsuas qhov ntsuas tawg ua haujlwm los tsim kom muaj kev sib raug zoo ntawm cov ntaub ntawv hydrogen nkag mus thiab cov phaj hlau cov nplai tawg tsis kam, thiab txhim kho qhov kev kwv yees qhov tseeb ntawm cov hlau phaj qhov ntsuas tawg ua haujlwm.
Hydrogen permeability kuaj tshuab thiab khoom siv
Raws li qhov tsis muaj cov cuab yeej tshwj xeeb rau kev ntsuas ob-electrolytic cell electrochemical metallic hydrogen permeability test, cov txheej txheem kev sim yuav tsum muaj kev tsim kho ib ntus ntawm cov khoom siv sim, thiab cov qauv saum npoo ntawm cov nyhuv thiab ciam teb cuam tshuam rau cov txiaj ntsig kev xeem. Qhov project ntawm nws tus kheej tsim ib qho kev sib xyaw ua ke ntawm metallic hydrogen permeability tester. Cov cuab yeej sim no tuaj yeem paub txog kev ua haujlwm xws li cov qauv ua ntej, electrochemical metallic hydrogen permeability ntsuas, cov ntaub ntawv tau txais thiab ua, thiab lwm yam, tsim cov cuab yeej rau ntsuas cov hlau hydrogen permeability, uas tuaj yeem ruaj khov, raug, nrawm thiab yooj yim ntsuas hydrogen diffusion ceev, sijhawm diffusion. , Lub diffusion coefficient tuaj yeem ua tau raws li ob lub teb chaws tus qauv "Hydrogen Penetration Method for Scale Explosion Sensitivity Test of Cold-rolled Steel Plate for Enameling" (GB/T29515-2013) and the international standard "Measurement of Hydrogen Penetration and Determination of Hydrogen Absorption and Migration in Metals Using Electrochemical Technology" Method" (ISO 17081-2014).
Kev sim txoj kev simulating nplai tawg tsis kam ntawm cov hlau loj loj los ntawm enameling thiab hlawv
Txhawm rau nce thaj tsam ntawm thaj tsam ntawm enameled steel xeem, tib lub sijhawm tshuaj xyuas qhov kev ua haujlwm tiv thaiv kev ua haujlwm ntawm cov hlau phaj welded cheeb tsam, thiab txhim kho qhov tseeb ntawm kev kwv yees qhov kev ua tau zoo ntawm cov hlau phaj, txoj kev tshawb no tsim. ib tug txias-dov enamel steel rau lub rhaub dej kub liner. txoj kev kuaj xyuas. Siv ob qhov kev tshuaj ntsuam xyuas los ntawm tib batch ntawm steel daim hlau thiab siv roj shielded ion welding los tsim ib tug loj soj ntsuam qauv nrog ib tug loj ntawm (90 ~ 120) mm × (180 ~ 240) mm. Txheej txheej sab nrauv ntawm cov qauv tshuaj ntsuam xyuas loj steel phaj nrog Rau enamel, tom qab sintering thiab timed alternating tests nyob rau hauv siab thiab qis kub chamber, saib seb scaling tshwm sim nyob rau sab sauv thiab sab saum toj ntawm tag nrho cov qauv; lub hauv paus ntsiab lus yog tias cov hydrogen uas ua los ntawm electrolyzing dej nyob rau hauv cov huab cua los ntawm plasma arc vuam dissolves mus rau hauv lub tshav kub-cuam tshuam cheeb tsam ntawm qhov kub thiab txias mus rau qhov no xam cov hydrogen cia peev xwm ntawm cov hlau phaj nws tus kheej. Txoj kev no yog siv ua ke nrog cov txheej txheem electrochemical kom raug kwv yees cov khoom tawg. Tom qab ntau qhov kev ntsuam xyuas, nws tau txiav txim siab tias tus qauv 1 hli tuab qauv ntawm enameled hlau ua tau raws li qhov yuav tsum tau ua rau ntsuas qhov tawg tsis kam thaum lub sijhawm hydrogen nkag mus rau ntau dua 9.5 feeb. Nyob rau tib lub sijhawm, txoj kev tshawb fawb no tau tsim cov qauv qauv rau cov kub nruam rolling strip steel, uas txo qhov kev siv ntawm cov qauv ua haujlwm, txhim kho cov khoom tawm los, thiab ua kom lub zog ntau lawm.
High-precision shape tswj tshuab
Qhov tshiab high-precision zoo tswj tshuab ntawm enamel steel kub dov thiab txias dov txheej txheem tsim los ntawm peb tes num siv online real-time saib xyuas ntawm qhov sib txawv haum, roughing thiab tiav dov centering thiab txuam tswj, tsis siv neeg yob stringing tswj ntawm nruab nrab yob ntawm lub dov zeb, thiab txias dov recoiling unit los ntawm kub nruam dov. Lub voj voog vuam tshuab nyias strip overlay welding, txias dov coiler mandrel superimposed nrog lub tes tsho roj hmab, thiab kev teeb tsa ntawm cov cuab yeej siv los txo cov kev co ua hauj lwm ntawm lub txias dov zeb coiler pab tau ua tiav kev tswj xyuas ruaj khov ntawm cov phaj zoo ntawm cov enameled tiav. steel nyob rau hauv 1nm.
Hauv online saib xyuas lub sijhawm tiag tiag rau kev sib piv cov khoob hauv cov kub tandem dov mills
Lub luag haujlwm ntawm kev soj ntsuam online ntawm lub sijhawm tiag tiag rau kev kub tandem dov zeb haum qhov khoob yog raws li hauv qab no: ① Preset qhov kev tswj qhov tseeb ntawm cov dov zeb archway loj thiab cov kabmob lub rooj loj, cov nqi ib txwm muaj thiab kev ntsuas lub voj voog ib txwm muaj. dov zeb archway thiab bearing rooj haum clearance ntau yam nyob rau hauv lub online xyuas system; ② Cov tswv yim thiab khaws cov ntaub ntawv qub nrog rau cov ntaub ntawv ntawm lub rooj zaum thiab cov ntaub ntawv dov zeb arch rau hauv online xyuas; ③ Raws li cov ntaub ntawv qub, cov kev saib xyuas hauv online tau txiav txim siab thiab khaws cov kev sib txuam ntawm cov dov zeb koov thiab lub rooj sib tham hauv online, thiab tso tawm cov dov zeb hauv lub sijhawm tiag tiag Qhov kev sib tw ntawm lub archway thiab lub rooj zaum hauv online tau zoo heev. lub sijhawm thiab qhov tseeb ntawm kev saib xyuas.
Kub nruam dov ntxhib dov thiab tiav dov centering thiab txuam technology thiab pab kiag li lawm
Qhov chaw nruab nrab thiab kev sib txuam thev naus laus zis thiab cov khoom siv ntawm cov dov ntxhib thiab ua tiav dov hauv kub nruam dov feem ntau suav nrog cov rooj nruab nrab ntawm cov menyuam thiab cov ntawv qhia sab. Muaj ntau yam kis tau tus mob nyob rau hauv nruab nrab cov menyuam lub rooj, thiab ob sab qhia phaj yog spaced sib nrug, uas yog thawj sab qhia phaj thiab ob sab qhia phaj. Thawj sab qhia phaj yog nyob rau hauv nruab nrab ntawm lub nruab nrab cov menyuam lub rooj, thiab lub thib ob sab qhia phaj yog nyob rau hauv lub finishing dov zeb. Nyob rau hauv pem hauv ntej ntawm chav tsev nkag thiab nruab nrab ntawm thawj sab qhia phaj thiab lub tiav dov unit. Lub sab qhia phaj muaj xws li ib tug trumpet-zoo li tus inlet, ib tug clamping ib feem thiab ib tug coj log nyob rau ntawm qhov sib tshuam ntawm ob. Lub log coj lub log muaj ib txoj hlua tig. Cov cuab yeej no tsis tas yuav hloov cov kab nruab nrab ntawm lub tshuab dov ntxhib, ua tiav dov chav tsev thiab cov rooj nruab nrab ntawm cov menyuam. Nws kho qhov sib txawv ntawm qhov yooj yim-rau-txav ntawm sab qhia phaj. Nws yog qhov yooj yim thiab yooj yim rau kev siv, thiab thaum kawg ua tiav lub hom phiaj ntawm kev sib piv ntawm qhov nruab nrab ntawm qhov nruab nrab billet nrog rau qhov chaw nruab nrab ntawm cov lus dov tiav.
Optimization ntawm dov system ntawm tandem txias dov zeb
Kev ua kom zoo ntawm lub tshuab txias dov tshuab dov muaj xws li cov hauv qab no: ① txhim kho cov txheej txheem nyias nyias ntawm txoj hlua vuam tshuab ntawm lub tshuab txias dov rov qab; ② txhim kho qhov txias dov emulsion roj skimming ntaus ntawv, txias dov hard coil core vuam ntaus ntawv thiab txo qhov txias dov Cov cuab yeej uas vibrates lub coiler ntawm dov zeb; ③ Ua kom zoo rau kev tshem tawm cov dej ntws tswj qhov system, cov txheej txheem khiav kom tshem tawm cov crystallization hauv cov kab noj ntawm cov kua qaub, thiab lub siab tsis siv neeg steel coil labeling integrated system; ④ Tsim cov kua nplaum superimposed rau ntawm lub hauv paus tseem ceeb ntawm qhov txias dov coiler patented pab pawg xws li teeb tsa thiab dials los tiv thaiv cov chais los ntawm kev sib cais ntawm lub taub hau grinder. Los ntawm cov kev ntsuas saum toj no optimization, cov khoom tiav phaj zoo yog thaum kawg stably tswj nyob rau hauv 1nm.