Raws li tundish nozzle yog cov channel tseem ceeb rau kev coj mus rau tundish, nws cov qib kev sib xyaw ua ke nrog kev ruaj ntseg tsim khoom thiab tswj hwm.
Cov hauv qab no yog cov ntsiab lus txuam nrog cov ntsiab cai thiab kev daws teeb meem:
I. Sib piv cov ntsiab lus tseem ceeb
Cov Txheej Txheem Tsis Muaj Kev Xaiv Nozzle Xaiv cov kev yuav tsum muaj kev pheej hmoo
Cov yam ntxwv steel hom steel- High-Oxygen Hlau: ZO₂-C Cov Khoom Siv Tau Kev Tiv Thaiv Kev Tiv Thaiv Al₂o₃ Tiv Thaiv Al₂o₃ Thaiv, Nozzle Strawbion thiab Perforation
- High-alumina steel: CAO OATING los tiv thaiv thaiv
Ntu Hom- slab: dav-sib luag submerged nzzle (optimized flash field) slagent entrapment, tawg
- Billet: Ncaj-los ntawm Nozzle (Yooj Yim Flow)
Teeb duab nrawm- High drawing speed (>1.8M / min): loj-aperture ib tug kua nto nto sib pauv, entrainment ntawm kev tiv thaiv kev tiv thaiv
- Qes duab nrawm nrawm: me me aperture + cua sov kom tiv thaiv kev solerification
Nruam Casting Rauv Tus Xov Tooj- Ntau tus cua cub ua txuas ntxiv ua haujlwm: nrawm-hloov nozzle system
Slag hom- High-alkali slag: MgO-C cov khoom siv yog erosion-resistant
2. Kev txheeb txoj kev daws teeb meem rau cov txheej txheem raug
Cov xwm txheej 1: Nruam casting ntawm cov hlau stainless hlau
Cav: Cov ntsiab lus CR thiab Ni cov ntsiab lus ntawm Molten Hlau ua rau muaj zog yaig
Nozzle Tshuaj:
Cov Khoom Siv: Zro₂-C (Zrot₂ ntau dua lossis sib npaug rau 85% ntawm Kab Kab Txom Nyem)
Tus qauv: ntxig submerged nozzle (sab qhov inclined ntawm 15 degree)
Kev Txhawb Nqa: Argon Roj Annular Gap Kev Tiv Thaiv (Flow Rate 6-8 l / min)
Cov txiaj ntsig:Kev pabcuam lub neej nce ntxiv rau 12 qhov cua sov, 60% txo hauv cov npuas subcutaneous hauv cov pob zeb cam
Scene 2: Nruam casting ntawm High-Alumina Hlau Cais
Sib tw:Txoj kev thaiv loj heev al₂o₃
Nozzle Tshuaj:
Khoom siv: Al₂o₃-C + Cazror₃ Meem
Tus qauv: Grit-hom anti-thaiv kev tsim qauv (hlais dav {2}}. 3 hli)
Txheej txheem: tshuaj ntsuab calcium ([CA] / [AL] =0. {{1)
Cov nyhuv:Nruam pouring lub sijhawm txuas ntxiv los ntawm 40min mus rau 120min
3.. TSEEM CEEB TSHEEJ
Flow Field simulation optimization
Simulation ntawm Steel Flow Qauv Siv Ansys npliag rau cov qauv nozzle
Kev ua kom zoo heev: Qhov Ntsuas Lub kaum sab xis (pom zoo 25-35} mm hauv qab tundish kua saum npoo)
Thermodynamic txuam tsim
Nozzle preheating system:
AL-C: Ci nkhaus 800 Qib → 1100 Qib (Ntaus Cua Kub 10 Qib / min)
Zirconia Carbon: Ci Nkaus 900 Qib → 1200 Qib (Ntaus Cua Sov 8 Qib / min)
Kev Ntsuam Xyuas Kub: Infrared Thermal IAVERER ENTATE qhov sib txawv<50°C
Dynamed Haum Kev Tsim Kho
Ntse sliding tshuab:
HYDRAULIC SERVO tswj (lub sijhawm teb<0.5s)
Yuav kho tau qhov qhib raws li kev kos duab nrawm (tswj qhov raug 0. 05mm)
