Casting txheej txheem tsim yog qhov txuas tseem ceeb hauv casting ntau lawm. Txhawm rau ua kom tiav cov txheej txheem casting tsim cov haujlwm tsim nyog thiab ua tau zoo, cov txheej txheem casting yuav tsum tsis yog tsuas yog paub txog cov txheej txheem tsim khoom ntawm lub tuam txhab tab sis kuj siv lawv cov kev paub yooj yim ntawm cov txheej txheem casting los txheeb xyuas cov castability ntawm cov qauv. Tsuas yog thaum cov qauv ua tau raws li qhov yuav tsum tau ua ntawm cov txheej txheem casting thiab cov txheej txheem casting thiab cov cuab yeej tsim nyog tau txais yuav ua tau siab - zoo castings.
Rau cov xuab zeb casting, nws yog ib qho tseem ceeb uas yuav tsum xaiv cov molding tsim nyog thiab cov tub ntxhais- ua txoj kev, nrog rau txoj hauj lwm pouring thiab parting nto, raws li cov yam ntxwv ntawm cov txheej txheem thiab cov kev xav tau ntawm ib feem, xav txog qhov ntau lawm batch ntawm lub casting. Txoj kev npaj txheej txheem casting yuav tsum raug txiav txim siab, cov xuab zeb cores tsim, thiab cov txheej txheem tsim nyog xws li kev ua haujlwm pub dawb thiab casting shrinkage tus nqi xaiv. Qhov no ua kom muaj kev ntseeg siab thiab ruaj khov ntawm casting zoo, siv zog ua kom tiav cov hom phiaj ntawm kev ua tau zoo, kev ua haujlwm siab, tus nqi qis, thiab cov pa phem tsawg.
Castability ntawm Tshooj Structure
Lub castability ntawm ib feem qauv yog hais txog qhov uas ib feem ntawm cov qauv ua tau raws li qhov yuav tsum tau ntawm cov txheej txheem casting, pab kom ntseeg tau tias casting zoo, thiab simplifies ntau lawm ua hauj lwm. Kev tsom xam ntawm castability ntawm ib feem qauv feem ntau tsom rau ob yam: tsis txhob muaj qhov tsis xws luag thiab ua kom yooj yim rau cov txheej txheem. Nws suav nrog kev tshuaj xyuas cov qauv khoom thiab kev lag luam kev lag luam raws li ib feem ntawm kev kos duab kom ntseeg tau tias muaj kev ntseeg siab thiab ruaj khov ntawm casting zoo thaum txo cov nqi tsim khoom. Kev tshuaj xyuas qhov castability ntawm ib feem qauv ua haujlwm ob lub hom phiaj tseem ceeb. Ua ntej, nws xyuas seb cov qauv ntawm nws tus kheej puas ua tau raws li cov txheej txheem casting. Cov neeg tsim qauv feem ntau xav txog qhov ua haujlwm tab sis saib xyuas cov txheej txheem casting. Yog tias cov teeb meem tsim qauv raug txheeb xyuas thaum lub sijhawm tshuaj xyuas, kev sib txuas lus nrog cov neeg ua haujlwm cuam tshuam los ntawm cov qauv tsim thiab cov neeg siv khoom yog tsim nyog los txhim kho cov qauv thaum ua kom muaj kev siv tau. Qhov thib ob, nyob rau hauv cov txheej txheem muab ib feem, nws txiav txim siab muaj peev xwm casting qhov tsis xws luag uas yuav tshwm sim thaum lub sij hawm tsim khoom thiab ua raws li kev tiv thaiv kev ntsuas thaum lub sij hawm txheej txheem kev npaj thiab kev tsim kom ntxaws.
Cov kauj ruam rau kev tsim cov cam khwb cia feem ntau suav nrog:
- Muaj nuj nqi tsim;
- Kev hloov kho thiab ua kom yooj yim ntawm kev tsim raws li kev ua haujlwm casting;
- Metallurgical tsim (xaiv thiab tsim nyog ntawm cov khoom siv casting);
- Kev xav txog nyiaj txiag.
Qee qhov xwm txheej, cov txiaj ntsig kev lag luam thiab kev lag luam tau coj los ntawm kev txhim kho cov qauv kev tsim khoom tuaj yeem muab piv rau cov txiaj ntsig ntawm kev xav tau, kev siv tshuab, thiab automation ntawm cov txheej txheem ntau lawm. Txawm li cas los xij, thaum txheeb xyuas qhov castability ntawm ib feem ntawm cov qauv, qhov tseem ceeb yuav tsum tau muab los ua kom ntseeg tau tias kev ua haujlwm zoo thiab kev siv cov kev xav tau, zam ib qho - ib sab tsom rau kev yooj yim ntawm cov txheej txheem. Cov kev cai rau castability yog ze ze rau hom alloy thiab casting txoj kev. Cov txheej txheem tshwj xeeb casting, xws li peev casting thiab tuag casting, muaj ob qho tib si zoo sib xws thiab sib txawv nrog cov xuab zeb casting raws li cov txheej txheem castability. Qhov zoo sib xws muaj xws li cov kev cai rau cov qauv phab ntsa tsim nyog, qhov tsawg kawg nkaus phab ntsa thickness, thiab txo qis los yog tshem tawm cov thermal influences hauv kev sib txuas ntawm phab ntsa. Cov kev cai tshwj xeeb tshwm sim los ntawm cov yam ntxwv tshwj xeeb ntawm cov txheej txheem no. Tshooj no feem ntau txheeb xyuas qhov castability ntawm cov qauv hauv cov xuab zeb casting. Rau cov kev xav tau ntsig txog cov txheej txheem tshwj xeeb casting, thov xa mus rau cov ntaub ntawv tseem ceeb.
