Qhov tseem ceeb ntawm kev siv cov xuab zeb casting raws li kev txheeb cais hauv kev tsim txhua qhov castings, 60 ~ 70% castings yog tsim nrog hom xuab zeb, thiab txog 70% ntawm lawv yog tsim nrog av nplaum hom. Qhov laj thawj tseem ceeb yog tias xuab zeb casting tsis tshua kim dua li lwm txoj kev casting, cov txheej txheem ntau lawm yog qhov yooj yim thiab lub voj voog ntau lawm yog luv. Yog li ntawd, zoo li lub tsheb cav lub tog raj kheej lub cev, lub tog raj kheej taub hau, crankshaft thiab lwm yam castings yog tsim nrog av nplaum ntub xuab zeb txheej txheem. Thaum cov hom ntub dej tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua, ces xav txog kev siv cov av nplaum xuab zeb qhuav hom, hom xuab zeb qhuav lossis lwm yam xuab zeb. Qhov hnyav ntawm cov av nplaum ntub xuab zeb casting tuaj yeem yog los ntawm ob peb kilograms mus rau kaum ob kg, thaum lub castings ua los ntawm cov av nplaum qhuav tuaj yeem hnyav txog li kaum ob tons. Feem ntau hais lus, rau qhov nruab nrab thiab loj castings, cam khwb cia hlau qhov chaw tuaj yeem ua los ntawm cov xuab zeb uas nws tus kheej-hardening xuab zeb, steel castings tuaj yeem tsim nrog dej iav xuab zeb hom, tuaj yeem tau txais qhov loj me, du nto castings, tab sis tus nqi siab dua.
Yog lawm, xuab zeb casting ntau lawm ntawm casting raug, nto tiav, cov khoom ntom ntom thiab cov qauv metallographic, cov khoom siv kho tshuab thiab lwm yam feem ntau tsis zoo, yog li thaum cov castings ntawm cov kev ua tau zoo, yuav tsum tau siv lwm txoj kev casting, xws li melting pwm (poob. ntawm wax) casting, tuag-casting, low-pressure casting thiab lwm yam. 2 Casting txoj kev yuav tsum tau yoog rau cov khoom siv xws li xuab zeb casting, ntau lawm ntawm lub Hoobkas yuav tsum tsim tej yam kev mob uas siv technologically advanced qauv, core-txoj kev. Cov qub-fashioned poob siab los yog poob siab molding tshuab ntau lawm kab kev tsim khoom tsis yog siab txaus, cov neeg ua haujlwm kev siv zog loj, lub suab nrov loj, tsis hloov mus rau qhov kev thov ntau lawm, yuav tsum maj mam hloov kho. Rau me me castings, yuav siv tau kab rov tav los ntsug hom tsis-lub thawv high-pressure molding tshuab ntau lawm kab, tiag tiag modeling efficiency yog siab, lub cheeb tsam kuj tsawg; rau qhov nruab nrab tuaj yeem xaiv ntau lub thawv ntawm high-pressure molding tshuab ntau lawm kab, cua xuas nrig ntaus qauv kab, txhawm rau hloov mus rau qhov yuav tsum tau ua kom nrawm, high-precision molding ntau lawm kab, core-ua txoj kev High efficiency core ua txoj kev xws li raws li Shell core. Loj castings nyob rau hauv nruab nrab batch yuav suav hais tias siv resin self-hardening xuab zeb styling thiab core ua. Ib-thooj me me batch ntau lawm ntawm hnyav-lub luag hauj lwm castings, phau ntawv qauv tseem yog ib qho tseem ceeb txoj kev, phau ntawv qauv yuav hloov mus rau ntau yam complex yuav tsum tau hloov tau yooj yim, tsis tas yuav tsum tau ntau ntawm cov txheej txheem khoom. Dej iav xuab zeb hom, VRH dej iav xuab zeb hom, organic ester dej iav nws tus kheej-hardening xuab zeb hom, av nplaum qhuav hom, resin nws tus kheej-hardening xuab zeb hom thiab cement xuab zeb hom yuav siv tau, rau ib-thooj ntau lawm ntawm heavy-duty castings, kev siv hauv av pit modeling txoj kev uas tsis muaj nqi, ceev ntau lawm. Kev tsim khoom lossis kev tsim khoom mus sij hawm ntev ntawm cov khoom siv stereotyped siv ntau lub thawv qauv, Split box modeling method yog qhov tsim nyog, txawm tias pwm, xuab zeb thawv, xws li qhov pib ntawm kev nqis peev siab, tab sis tuaj yeem txuag cov qauv kev ua haujlwm, txhim kho cov khoom zoo kom tau txais txiaj ntsig.
Tsawg-pressure casting, tuag-casting, centrifugal casting thiab lwm yam casting txoj kev, vim hais tias ntawm cov nqi siab ntawm cov cuab yeej thiab pwm, yog li tsuas yog tsim rau loj ntau lawm. 3 Cov qauv tsim qauv yuav tsum tsim nyog rau lub Hoobkas, piv txwv li, tib yam khoom siv lub tshuab loj loj lub txaj thiab lwm yam castings, feem ntau yog siv cov qauv tsim qauv, tsis txhob ua rau lub ntsej muag thiab lub thawv xuab zeb, hauv av pit core, thiab lwm yam. Hoobkas siv xuab zeb lub thawv qauv qauv, kev tsim cov tsos.
Ntau yam kev tsim khoom (nrog rau cov khoom siv, qhov chaw, cov neeg ua haujlwm zoo, thiab lwm yam), cov cwj pwm tsim khoom, cov kev paub dhau los tsis zoo ib yam, raws li cov xwm txheej no yuav tsum tau txiav txim siab seb cov khoom tsim nyog ua dab tsi thiab qhov tsis haum (lossis tsis tuaj yeem) rau ua yam khoom. 4 coj mus rau hauv tus account lub precision yuav tsum tau ntawm castings thiab tus nqi ntawm ntau yam casting txoj kev kom tau qhov sib txawv casting qhov tseeb, thawj zaug peev thiab productivity tsis zoo ib yam, qhov kawg economic kev pab cuam kuj sib txawv. Yog li ntawd, txhawm rau ua tiav ntau dua, nrawm, zoo thiab lub xeev, peb yuav tsum coj mus rau hauv tus account txhua yam. Tus nqi pib kwv yees ntawm txoj kev xaiv casting yuav tsum tau ua nyob rau hauv thiaj li yuav txiav txim siab txoj kev casting nrog high economic efficiency thiab tuaj yeem lav qhov yuav tsum tau casting.