Kev ruaj ntseg ntawm tundish yog ib qho tseem ceeb ntawm kev ruaj khov thiab tsim nyog steel ntau lawm, ua rau kev nrhiav kev pab cuam lub neej txhim kho.Ntawm cov laj thawj uas ua rau lub neej luv luv ntawm tundish, steel clogging ntawm exchangeable nozzles ua ib qho kev txwv.
Lub hauv paus yog vim li cas ntawm steel clogging ntawm nozzles yog ntxiv loj kab nrib pleb ntawm daim hlau (feem ntau tawg qhov ntev yuav tsum nyob rau hauv 0.3 hli), los yog loj pit corrosion puas (raws li hauv qab no daim duab). Peb xaus qhov tseem ceeb tshaj plaws uas ua rau cov hlau txhaws.
1. Corrosion ntawm cov khoom:Qhov no tshwm sim rau tag nrho cov refractories. Feem ntau tundish metering nozzles lossis exchangeable nozzles yog tsim los ntawm Al2O3-C cov khoom, nrog zirconia inserts, pab txhim kho corrosion kuj. Thaum siv, impurities (MnO2, SiO2, MgO thiab lwm yam) sab hauv cov hlau molten yuav hnov mob nrog ZrO2, ua rau cov ntaub ntawv qis melting thiab raug ntxuav los ntawm cov hlau molten. Yog li ntawd, txoj kab uas hla ntawm inserts yog nthuav. Tundish nozzles yog Long Keter cov khoom zoo tshaj plaws nrog kev tsim cov thev naus laus zis. Peb kuj tsim thiab tsim los tiv thaiv swirling nozzles, nrog zoo corrosion thiab yaig tsis kam, thiaj li yuav txo tau steel clogging teeb meem.
2. Kev ua haujlwm:Thaum lub sij hawm ua hauj lwm hauv teb, lub nozzles yuav tsum raug rho tawm mus tshaj 1200 degree ua ntej thov, thiaj li yuav txo tau thermal tawg vim thermal shock nyob rau hauv lub nozzles.
3. Monolithic mechanism:Cov kab nrib pleb ntawm sab sauv thiab sab qis yuav tsum tsis pub dhau 0.3 hli. Lub sab sauv thiab sab nozzles nruj nreem los ntawm active slide spring system. Kev saib xyuas rau cov springs yuav tsum nruj heev, kom paub tseeb tias qhov siab dawb ntawm nozzles zoo ib yam, thiab sib npaug siab ntxiv rau ntau sab ntawm nozzles.
4.Ntawm no, tshwj xeeb hom hlau, siab siab oxygen tshuab los yog deoxydation kev kho mob, thiab phau ntawv yam tseem ceeb thaum hloov nozzles tag nrho cov kev pab cuam lub neej.
Tundish nozzles yog peb cov khoom zoo tshaj thiab cov khoom tseem ceeb. Raws li peb cov kev paub dhau los ntawm kev tsim khoom thiab kev tshawb fawb, cov lus qhia muaj:
1. Ua kom ruaj khov zawv zawg mechanism; xyuas kom huv si thiab huv si zawv zawg stroke; khaws cov kab nrib pleb ntawm nozzles hauv 0.3 hli
2. Tsim nyog tsim ntawm nozzle diameters thiab cov ntaub ntawv; Kev tshuaj xyuas ntawm qhov chaw yuav tsum tau kuaj xyuas ua ntej thov, tsis txhob tawg / puas / qhov tsis sib xws.
3. ruaj khov thiab nruam casting, ruaj khov steel hom, tsis muaj ntxiv siab lossis qis molten steel yog cam khwb cia.
4. Cov neeg ua haujlwm paub txog kev ua haujlwm raug thov, zam kev sib tsoo vim kev ua haujlwm.
5. Ua kom muaj cua sov ua ntej ua ntej siv cov nozzles.
Ntev Keter mob siab rau muab cov khoom zoo, txhim khu kev qha tundish nozzles, lub hom phiaj los pab tswj cov hlau molten kom raug. Txais mus rau systems raws li hauv qab no:
Concast - CNM
Danieli - FNC
Interstop - MNC
Krosaki - OTNC
Vesuvius - CNC / SYS120
