Tus tsim ntawm lub steel casting dross lauj kaubcuam tshuam nws cov txiaj ntsig hauv kev sau thiab lim cov dross, thiab yog tias cov dross raug coj mus rau hauv lub ladle lossis casting pwm, nws yuav dhau los ua impurity, txo cov purity thiab zoo ntawm cov casting, ua rau scrapping. Lub dross tseem corrodes ladle, conveyor thiab furnace refractories, nce nqi. Yog li ntawd, kev tshuaj xyuas thiab kev saib xyuas tsis tu ncua pab tiv thaiv kom tsis txhob muaj kev sib txuam thiab txhaws ntawm qhov dej tawm, thiab kuj yog ib txoj kev tsim nyog heev.
Dross Pan Design Factors That Enhance Collection
Txoj haujlwm ntawmsteel casting dross lauj kaubyog kom zoo ntes thiab tuav lub dross kom nws tsis rov nkag mus rau hauv cov kwj hlau. Ntawm no yog qhov tseem ceeb dross pan tsim yam uas txhim kho dross sau thiab txhim kho hlau tawm los:
Loj:Loj dua dross pan nto cheeb tsam thiab muaj peev xwm txhim kho qhov tshwm sim thiab kom muaj nuj nqis ntawm dross capture. Cov lauj kaub yuav tsum loj me me raws li qhov xav tau ntawm cov ntim ntim.
Cov duab:Rectangular pans muab ib qho kev sib kis ntau dua piv rau cov qauv square. Uniform coverage xyuas kom tag nrho dross capture.
Txoj kab nqes:Angled pans ua rau dross ntws downhill rau hauv ib cheeb tsam sau kom yooj yim tshem tawm. 30-45 degree qhov siab yog qhov zoo tshaj plaws.
di ncauj:Ntxiv di ncauj ntev los yog flared daim duab maximize dross capture cheeb tsam. Daim di ncauj project ncaj qha hauv qab lossis ib ncig ntawm cov dej ntws.
Txheej:Anti-stick txheej zoo li titanium nitride tiv thaiv dross los ntawm adhering rau lub lauj kaub rau qhov yooj yim tshem tawm.
Dej ntws:Cov dej ntws tso cai rau cov hlau molten ntws rov qab mus rau qhov cub kom tsis txhob poob. Dross nyob tom qab.
y suav nrog qhov tsim nyog sizing, angling, thiab cov qauv tsim tseem ceeb,steel casting dross lauj kaubplays lub luag haujlwm tseem ceeb hauv kev txhim kho kev sib cais thiab sib sau ua ke ntawm ntab slag thiab oxides, thaum kawg ua kom cov hlau tawm los thiab cov txheej txheem ua tau zoo.
Yuav Ua Li Cas Txhim Kho Dross Tshem Tawm Txhim Kho Hlau Yield?
Thaum dross pans yog tsim los rau qhov siab tshaj plaws dross capture, nws ncaj qha txhais mus rau ntau dua casting yields thiab productivity:
Kev txo qis:Tsawg dross carryover txhais tau tias tsawg dua castings tsis lees paub rau impurities thiab tsis xws luag. Qhov no txo cov nqi rework thiab seem.
Rauv yield:Raws li dross raug tshem tawm ntau dua li reabsorbed, ntau cov hlau huv tuaj yeem nchuav tawm ntawm txhua qhov cub cua sov.
Ladle life:Tiv thaiv dross nkag mus rau hauv kev hloov ladles txo qhov yaig lengthening lawv lub neej siv tau.
Trough / ntxhua khaub ncaws:Captured dross ua rau tsawg abrasive hnav ntawm pouring troughs, ncua kev txij nkawm mus.
Refractory lub neej:Nres dross nqa rov qab mus rau hauv lub cub tawg tiv thaiv cov kab los ntawm kev tawg. Qhov no txuas ntxiv kev sib tw ntawm kev rov ua dua tshiab.
Kev txuag hluav taws xob:Raws li kev poob cua sov yog txo los ntawm kev ua kom dross cais los ntawm cov hlau kub, cov nqi hluav taws xob txo qis.
Melt poob:Cov qhov dej ntws los tiv thaiv qhov tuav ntawm cov hlau seem, rov qab los rau casting es tsis txhob poob.
Txhim kho dross tshem tawm los ntawm cov lauj kaub ua rau kom cov hlau tawm los thiab cov khoom tsim tau los ntawm kev txo cov khoom seem, txhim kho cov khoom siv hluav taws xob, ua kom lub neej ntev ntev, khaws cia refractory, thiab txo cov nqi hluav taws xob. Qhov kev ua kom zoo no ua kom cov hlau huv yog nchuav, txo qis kev tsis lees paub thiab ua kom tag nrho cov txiaj ntsig ntawm cov txheej txheem casting.
Alternative Dross Pan Designs
Thaum tsau lub lauj kaub yog feem ntau, qee qhovsteel casting dross lauj kaubcov qauv tsim muaj xws li:
Articulating lauj kaub:Pans pivot rau qaij dross rau hauv ib lub thoob ntim khoom. Servo motors muab qhov tseeb qaij tswj.
Rotating pans:Cov lauj kaub uas tsav lub cev muaj zog tig raws cov dej ntws mus txuas ntxiv nthuav tawm qhov chaw khaws khoom huv si.
Travelling pans:Pans ntawm actuators transverse hla cov kwj deg kom tshem tawm dynamic dross.
Magnetic lauj kaub:Electromagnets hauv qab lub lauj kaub siv lub zog nce siab los tuav cov dross kom txog thaum muab pov tseg.
Belt pans:Nruam siv cov lauj kaub tig dross deb ntawm daim di ncauj thaum nthuav tawm cov khoom sau tshiab.
Thaum lwm txoj kev siv lub lauj kaub tsim xws li articulating, rotating, mus txawv tebchaws, sib nqus, thiab siv lub lauj kaub muaj cov txiaj ntsig tshwj xeeb, cov txheej txheem ruaj khov cov lauj kaub feem ntau nyiam vim lawv qhov yooj yim, kev ntseeg tau, thiab cov nqi siv tau. Cov qauv tsim no ua tau raws li qhov xav tau ntawm feem ntau cov chaw tsim khoom, ua rau lawv xaiv qhov tsim nyog rau kev tshem tawm dross.
Xaus
Hlau Casting lauj kaubKev tsim qauv yog qhov tseem ceeb rau kev tshem tawm cov impurities hauv steel casting ntau lawm. Los ntawm kev txiav txim siab txog yam tseem ceeb xws li lub lauj kaub loj, cov duab, txoj kab nqes, txheej, thiab cov dej ntws - cov lauj kaub tuaj yeem tsim kom muaj txiaj ntsig zoo thiab tuav cov slag. Kev ntes tau zoo ua kom muaj txiaj ntsig zoo los ntawm kev tiv thaiv oxides thiab cov khoom tsis yog xim hlau los ntawm kev paug cov kwj deg los yog eroding furnaces thiab ladles. Ob qho khoom tsim tau thiab cov txiaj ntsig tau nce ntxiv los ntawm kev xaiv lub lauj kaub kom zoo thiab tsim qauv. Yog hais tias koj xav tau ib tug haum slag tais, Huan-tai yuav yog ib tug zoo xaiv, thov hu rau ntawmtech@huan-tai.org.
Cov ntaub ntawv:
1. Xu, W., Liu, X., Liu, B., Tang, H. and Jiang, H. (2018). Txhim kho steel casting nto zoo los ntawm kev tshem tawm oxide txheej ua ntej pwm pouring. AFS Transactions, 26, pp. 545-552.
2. Sahai, Y. and Askheda, A. (2007). Unbonded dross - Tsim mechanisms thiab txoj kev tiv thaiv. AFS Transactions, 89, pp. 463-476.
3. Garat, M. and Arana, JL (2002). Ib qho kev pab cuam rau kev nkag siab ntawm ntau hom dross tsim nyob rau hauv cov txheej txheem aluminium melting. Phau ntawv Journal of Materials Science, 37(18), pp.3883-3887.
4. Piepel, GF, Visnapuu, A., Oja, A. and Kolats, M. (2009). Kev ntsuam xyuas ntawm ntau yam dross-collection systems. AFS Transactions, 26, pp. 487-494.
5. Sahai, Y. and Emi, T. (1996). Cov nyhuv ntawm pwm flux dross ntawm steel zoo thiab tsim tau. Hlau thiab Steelmaker, 23(1), pp.43-50.
6. Zhang, L., Thomas, BG and Sussman, RC (1994). Cov nyhuv ntawm pwm flux dross ntawm cov khoom ntawm steels. Hlau thiab Steelmaker, 21(12), pp.41-46.
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