Lub ladle ntxeem tau ntsaws yog ib qho tseem ceeb ua haujlwm refractory tivthaiv siv nyob rau hauv LF ladle refining furnaces. Nws yog tsuas yog siv rau hauv qab argon tshuab kom homogenize qhov kub thiab muaj pes tsawg leeg ntawm cov hlau molten, tshem tawm inclusions, thiab txhim kho refining tshuaj.
Muaj nuj nqi
Homogenization: Tshem tawm qhov sib txawv ntawm qhov kub thiab txias thiab sib cais sib cais hauv cov hlau molten, ua rau kom tawg sai thiab sib tov sib xyaw ntawm cov hlau.
Kev ua kom huv ntawm cov hlau molten: Argon npuas ntes tsis yog -cov khoom siv hlau xws li Al₂O₃ thiab nqa mus rau saum npoo kom tshem tawm.
Kev nrawm ntawm cov tshuaj tiv thaiv: Txhim kho huab cua hloov pauv ntawm cov hlau-slag interface, txhim kho desulfurization thiab deoxidation efficiency.
Hom qauv
Slit Type, Straight Bore Type thiab Micro-Porous Type
Slit Hom
Ntau qhov ncaj ncaj (0.1-0.3 hli) yog preformed nyob rau hauv lub cib.
Qhov zoo: Cov pa roj loj loj, muaj zog nplawm, lub neej ua haujlwm ntev, tiv thaiv kev txhaws, thiab roj permeability siab (tshuab- dhau ntawm tus nqi).
Daim ntawv thov: LF/VD/RH refining txheej txheem, loj - thiab nruab nrab - ladles (30-300 t thiab siab dua).
Ncaj bore hom
Cov yam ntxwv los ntawm cov kab ncaj nraim (Φ0.8-1.5 hli).
Cov txiaj ntsig zoo: Kev ua haujlwm tsis zoo rau molten hlau nkag, txo qhov xav tau oxygen tu, thiab lub neej ua haujlwm ntev dua.
Daim ntawv thov: Ultra-hlau steel, siab- carbon steel, thiab tej yam kev mob ua rau molten hlau nkag.
Micro-Porous Type
Gas ntws yog tiav los ntawm kev nruam hauv pores nyob rau hauv cov khoom.
Disadvantages: Tsis tshua muaj zog, susceptibility rau yaig thiab kev puas tsuaj, ib tug nyiam mus clogging, thiab lub neej kev pab luv luv.
Daim ntawv thov: me me-qhov loj me lossis nruab nrab- zaus furnaces, thiab qis- qib steel.
Khoom siv
Corundum-Spinel System (Al₂O₃–MgO·Al₂O₃)
Cov ntaub ntawv tseem ceeb: tabular corundum, dawb fused alumina, spinel
Bonding system: siab -purity calcium aluminate cement + -Al₂O₃ micropowder
Khoom: Zoo heev thermal poob siab tsis kam, slag corrosion kuj, yaig kuj, thiab kub lub zog
Daim ntawv thov: LF / VD / RH refining, 1600-1750 degree, dav hlau qib
Chrome-Corundum System (Al₂O₃–Cr₂O₃)
Qhov zoo: muaj zog slag tsis kam thiab siab - kub stability
Qhov tsis zoo: Ib puag ncig kev pheej hmoo vim yog Cr⁶⁺, tus nqi siab, thiab nruab nrab thermal poob siab tsis kam
Daim ntawv thov: Cov mob hnyav slag nres, ultra- steel huv, thiab cov txheej txheem tshwj xeeb refining
|
Qeb Khoom |
Porous Plug | Rooj Cib | Joint Mortar | ||
| Chrome Corundum Porous Plug | Corundum{0}}Spinel Porous Plug | Chrome Corundum{0}}Mullite DCZ-1 | Corundum -Spinel DAZ-1 | DSM-1 | |
| Al2O3+MgO (%) | Ntau dua lossis sib npaug rau 88.0 | Ntau dua lossis sib npaug rau 92.0 | Ntau dua lossis sib npaug rau 70.0 | Ntau dua lossis sib npaug rau 90.0 | Ntau dua lossis sib npaug rau 70.0 |
| CaO(%) | Tsawg dua los yog sib npaug li 1.5 | Tsawg dua lossis sib npaug li 2.0 | Tsawg dua los yog sib npaug li 1.5 | Tsawg dua lossis sib npaug li 2.0 | - |
| Cr2O3(%) | Ntau dua lossis sib npaug 4 | - | - | - | - |
| Qhov ceev (g / cm³) | Ntau dua lossis sib npaug rau 3.1 | Ntau dua lossis sib npaug rau 3.0 | Ntau dua lossis sib npaug rau 2.90 | Ntau dua lossis sib npaug rau 2.95 | Ntau dua lossis sib npaug li 2.5 |
| CCS (MPa) | Ntau tshaj los yog sib npaug rau 60 | Ntau dua lossis sib npaug li 90 | Ntau tshaj los yog sib npaug rau 60 | Ntau dua lossis sib npaug li 85 |
- |
| HMO (MPa, 1400℃× 0.5h) | Ntau dua lossis sib npaug rau 6.0 | Ntau dua lossis sib npaug rau 9.0 | Ntau dua lossis sib npaug rau 5.0 | Ntau dua lossis sib npaug rau 7.0 | - |
| Huab cua permeability (Nm³) | 12-30 | 12-30 | - | - | - |
| Daim ntawv thov | Dav siv rau hauv qab argon tshuab txheej txheem nyob rau hauv ntau yam ladles, nrog rau refining ladles thiab nruam casting ntau ladles. | ||||
Cov ntsiab lus tseem ceeb ua haujlwm
Thermal shock resistance: Nrog rau qhov kub thiab txias sib txawv ntawm 1600℃molten steel thiab txias argon.
Kev tiv thaiv kom siab -kub corrosion thiab yaig: Ua kom ntev - lub sij hawm scouring los ntawm molten steel, slag, thiab roj ntws.
Cov huab cua ruaj khov permeability: Gas tshuab tus nqi siab dua lossis sib npaug li 98%, tswj tau tus nqi ntws, tsis muaj hlau nkag, thiab tsis muaj clogging.
Oxygen lancing resistance: Tsis muaj qhov tawg lossis tawg thaum lub sij hawm oxygen lancing rau kev kho kub (siab tshaj 2000 degree).
Lub neej ua haujlwm ntev: 15-60 heats ib lub voj voog kev pabcuam.
Txoj Cai Xaiv
Ladle muaj peev xwm:30-100t, 100-300t, thiab siab dua 300t
Refining txheej txheem:LF, LF + VD / RH, nruam nruam nrog cov roj hauv qab tshuab
Qib steel:Tsawg-carbon / ultra- qis- carbon steel, siab- carbon steel, stainless hlau, hluav taws xob hlau, pipeline steel
Lub hom phiaj ntawm kev pab cuam lub neej:20 cua sov, 40 cua sov, 60+ cua sov
Gas muab parameters:Ua haujlwm siab, ntws tus nqi, thiab argon tshuab hom
Qhov ntau thiab tsawg (On Diameter × Qhov siab)
Qhov loj me: φ180 × 200, φ200 × 220
Qhov loj me: φ230 × 250, φ250 × 280 (feem ntau siv)
Loj: φ300 × 300, φ350 × 320
Cim npe nrov: Tuam Tshoj ladle ntxeem tau plug manufacturers, lwm tus neeg, Hoobkas