Cov Teeb Meem Thiab Tiv Thaiv Cov Txiv Kab Ntxwv Cov Khaub Ncaws Pis Tsis xws xws li ntawm cov npoo ntawm coated xuab zeb {}} cov ntoo cam khwb cia hlau
1. Cov kab ntxwv ntawm cov txiv kab ntxwv tev tsis xws luag ntawm coated xuab zeb {}}}} cam khwb cia hlau qhov chaw:
Cov tsos pom: Qhov saum npoo ntawm lub Casting nthuav tawm cov tsos tsis txawv, nrog ntau cov kev tawm tsam me me thiab kev ntxhov siab, uas pom rau lub qhov muag liab qab. Thaum muaj mob hnyav, nws yuav cuam tshuam rau tag nrho cov tsos zoo thiab qhov tseeb ntawm qhov tseeb ntawm lub casting.
Roughness: Qhov nplaim roughness ntawm lub camting nrog txiv kab ntxwv tev tsis xws luag, thiab nws tuaj yeem tau txais kev nce ntxiv, uas yog qhov sib txawv ntawm cov qauv sib txawv ntawm cov npoo qub.
Cov xim hloov: Cov xim ntawm qhov tsis xws luag tej zaum yuav txawv me ntsis ntawm lub ntsej muag, feem ntau yuav tshwm sim vim qhov hloov pauv ntawm qhov chaw teeb pom kev txawv.
Cov qauv faib: Txiv kab ntxwv tev tsis xws luag feem ntau muab cov txheej txheem sib hloov, tab sis tej zaum yuav hloov cov khoom sib txawv, tab sis yuav muaj cov hlau tuab ntau, lossis cov roj ntsha li roj av thaum puv.
2. Cov txiv kab ntxwv cov txiv kab ntxwv tev tsis xws luag rau saum npoo av hlau casting tsim los ntawm coated xuab zeb
Lam ua
Nto Roughness: Lub Pwm Ntuj Roughness tus nqi yog dhau heev thiab tsis yog du, yog li ntawd cov txiv kab ntxwv tev - zoo li tsis sib xws.
Kev sib zog nqus dej: tsis muaj txiaj ntsig txoj kab nqes hav tau kev sib txhuam ntawm lubast thiab cov txiv kab ntxwv ua rau cov npoo npoo thiab daim qauv txiv kab ntxwv tev tsis xws luag.
Coated Xuab Nruag
Particle loj faib: tsis sib xws me me ntawm coated xuab zeb thiab ntau cov xuab zeb zoo yuav ua rau cov cua tsis zoo ntawm kev molding xuab zeb. Thaum pouring molten hlau, roj av tsis tau tso tawm du zoo, ua rau cov txiv kab ntxwv tev {}} zoo li pores ntawm qhov chaw ntawm lub pov.
Resin cov ntsiab lus: Cov ntsiab lus siab dhau lawm yuav nce cov tawv ntawm cov pwm thiab ua kom lub zog siab dhau. Thaum lub casting solidifies thiab shrinks, cov moulding Sand tsis tuaj yeem muab txoj kev nyob rau lub sijhawm, yog li tsim kev ntxhov siab ntawm casting nto, uas ua rau txiv kab ntxwv tev tsis xws luag.
Nyob rau hauv cov nqe lus ntawm pouring txheej txheem
Ncuav ntsuas kub: Yog tias lub ncuav txias heev dhau thiab cov kua ntawm cov hlau moling yuav nce ntxiv, ua rau cov txiv kab ntxwv ua kom tsis taus.
Ncuav ceev: yog tias lub pouring ceev nrawm heev, cov hlau loj heev, thiab tseem yuav ua rau muaj cov roj av me me, thiab tseem yooj yim ua rau cov txiv kab ntxwv tev tsis xws luag rau saum npoo ntawm lub pov.
Nyob rau hauv cov nqe lus ntawm ib puag ncig cov khoom siv
Vaum noo: Yog tias cov av noo ntau dhau, cov xuab zeb coated yuav yooj yim nqus cov pa taws, uas yuav ua rau cov txiv kab ntxwv tev tsis xws luag rau saum npoo ntawm lub pov.
Rau cov laj thawj saum toj no, cov kev daws teeb meem tuaj yeem coj, yog li daws cov txiv kab ntxwv ua kom zoo nkauj, thiab txhim kho cov txiv kab ntxwv tev tawm ntawm cov npoo hlau ntawm cov npoo hlau nplaum.
3. Yuav ua li cas kom tsis txhob txiv kab ntxwv tev tsis xws luag nyob rau hauv coated sand grey hlau castings?
Pwm Tsim thiab Kev Raug
Txhim kho nto zoo: Finely cov txheej txheem thiab polish cov pwm saum npoo los ua nws qhov chaw mos kom ncav tau qib qis. Feem ntau, tus nqi RA yuav tsum tau nyob nruab nrab ntawm 0.8μm- 1.6 μm los xyuas kom meej tias cov nrum saum npoo av tuaj yeem kho cov pwm nto.
Tsim nyog tsim cov kab nqes: raws li cov qauv thiab tsim nyog} {} {1} nyob rau hauv lub cam khwb cia, feem ntau ntawm 1℃thaum lub teeb thiab tsis txhob khawb qhov chaw sib dhos.
Coated Xuab Zeb Xaiv Thiab Ua
Tswj particle loj faib: Xaiv coated xuab zeb nrog uniform particle loj, thiab cov khoom siv xuab zeb zoo tsis tshaj li 10% kom ntseeg tau cov huab cua permeability thiab fluidity ntawm cov pwm xuab zeb.
Kho cov txheej txheem cob qhia: Raws li cov kev xav tau ntawm cov nrib thiab cov txheej txheem ntau lawm, kom ntseeg tau tias 2.0% {1} {%, kom ntseeg tau lub zog txaus thiab cov txiaj ntsig zoo thaum cov khoom siv khov kho thiab shrinks.
Nchuav cov txheej txheem tswj
Nruj me ntsis tswj qhov ncuav txias txias: txiav txim siab qhov tsim nyog nchuav rau qhov kub raws li cov khoom siv thiab cov qauv ntawm cov casting. Rau grey hlau castingings, pouring kub feem ntau tswj tau ntawm 1350℃thiab 1450℃kom tsis txhob muaj ntau dhau ntawm cov hlab ntaws ntawm Moulding xuab zeb.
Kev tswj hwm qhov nrawm: Siv ib qho tsim nyog pouring ceev, feem ntau ntawm 0.5m / s, kom cov roj ntsha tuaj yeem muaj kev kub ntxhov thiab txo cov nplawm ntawm cov tshuab raj moulding.
Tswj Kev Tswj Ib Cheeb Tsam Ntau Lawm
Kho cov av noo ntawm ib puag ncig: tswj cov av noo ntawm cov chaw noo ntawm 40% thiab 60% kom tsis txhob noo xuab zeb thiab ua kom cov ruaj khov ntawm cov pwm ua tau zoo. Cov av noo tuaj yeem tswj los ntawm kev txhim kho cov khoom siv dehumidification lossis tso cov desiccant hauv lub rhiav.
Tshaj tawm - kev ua ntawm castings
Sijhawm tu thiab polishing: Tom qab ua cov cam moulding yog qhov ua tau zoo ntawm cov cam khwb cia thiab txo qhov kev cuam tshuam ntawm cov txiv kab ntxwv tev tsis xws luag rau cov tsos ntawm lub pov.
