Dab tsi yog 6 cov kauj ruam koom nrog hauv txheej txheem casting?

Cov txheej txheem casting yog txheej txheem tsim khoom siv los tsim cov khoom los ntawm cov khoom siv molten, xws li hlau, yas, lossis ceramic, rau hauv pwm. Cov ntaub ntawv solidifies nyob rau hauv lub pwm, noj nyob rau hauv nws cov duab, thiab ces muab tshem tawm los ua tus kawg khoom. Cov txheej txheem casting feem ntau suav nrog rau cov kauj ruam tseem ceeb, txhua tus ua lub luag haujlwm tseem ceeb hauv kev tsim cov khoom zoo. Hauv phau ntawv qhia dav dav no, peb yuav tshawb txog rau cov kauj ruam no kom ntxaws.

1. Patternmaking:

Thawj kauj ruam hauv txheej txheem casting yog patternmaking. Nws suav nrog kev tsim ib qho kev hloov pauv lossis cov qauv ntawm cov khoom xav tau lossis ib feem, uas ua haujlwm ua tus qauv rau pwm. Cov ntsiab lus tseem ceeb ntawm kev tsim qauv muaj xws li:

Qauv Tsim:Cov qauv yog tsim los ntawm cov specifications ntawm cov khoom kawg, coj mus rau hauv tus account nws loj, zoo, thiab nta. Tus qauv tsim yuav raug tsim siv computer-aided design (CAD) software lossis tes.

Qauv Khoom:Cov qauv tuaj yeem tsim los ntawm ntau yam ntaub ntawv, suav nrog ntoo, yas, hlau, lossis ua npuas dej, nyob ntawm seb yam khoom zoo li tus nqi, qhov nyuaj, thiab txoj kev siv casting.

Qauv nta:Cov qauv yuav suav nrog cov yam ntxwv ntxiv xws li cov cores (los tsim cov kab noj hniav sab hauv), lub kaum sab xis (los pab txhawb pwm tso tawm), thiab cov txheej txheem gating (kom tswj cov dej ntws ntawm cov khoom molten).

Qauv Tolerances:Cov qauv feem ntau yog tsim los me ntsis loj dua qhov kawg cov khoom lag luam kom suav rau shrinkage thaum lub sij hawm txias thiab solidification ntawm cov khoom.

2. Kev npaj pwm:

Thaum tus qauv npaj txhij, cov kauj ruam tom ntej yog kev npaj pwm. Cov pwm yog cov kab noj hniav hollow uas txhais cov duab ntawm qhov kawg casting. Kev npaj pwm muaj ntau yam txheej txheem tseem ceeb:

Pwm Khoom:Qhov kev xaiv ntawm cov khoom pwm nyob ntawm yam xws li cov txheej txheem casting, cov khoom siv, thiab qhov xav tau nto tiav. Cov khoom siv pwm muaj xws li xuab zeb, hlau, ceramics, thiab kev nqis peev (kev sib xyaw ntawm plaster thiab xuab zeb).

Pwm Cavity:Lub pwm kab noj hniav yog tsim los ntawm kev ntim khoom los yog shaping cov khoom pwm nyob ib ncig ntawm tus qauv. Cov txheej txheem no ua kom cov pwm ua tau raws li tus qauv ntawm cov qauv.

Cores:Rau qhov chaw nrog cov kab noj hniav, cov cores ua los ntawm cov xuab zeb lossis lwm yam khoom siv refractory yog siv los tsim cov voids hauv pwm.

Gating System:Lub rooj vag system, suav nrog sprues, khiav, thiab rooj vag, yog tsim los tswj cov dej ntws ntawm cov khoom molten rau hauv pwm kab noj hniav.

3. Melting thiab Pouring:

Nrog pwm npaj, cov kauj ruam tom ntej yog yaj cov khoom uas yuav cam khwb cia. Kev xaiv cov khoom tuaj yeem sib txawv thiab tuaj yeem suav nrog cov hlau xws li txhuas, tooj dag, hlau, lossis hlau, nrog rau cov yas lossis ceramics. Cov txheej txheem melting thiab pouring muaj cov hauv qab no:

Melting:Cov khoom siv raw yog melted nyob rau hauv lub cub tawg los yog crucible ntawm qhov kub thiab txias rau cov khoom siv. Cov txheej txheem no hloov cov khoom siv rau hauv lub xeev molten.

Ncuav:Cov khoom molten yog ua tib zoo nchuav los yog txhaj rau hauv pwm kab noj hniav los ntawm qhov rooj kaw lus. Cov txheej txheem pouring kom zoo thiab tswj cov khoom kub yog qhov tseem ceeb los xyuas kom meej qhov kev ua tiav.

Solidification:Tom qab pouring, cov khoom molten txias thiab solidifies hauv pwm. Lub sij hawm yuav tsum tau rau solidification yuav txawv nyob ntawm seb cov khoom thiab qhov thickness.

4. Txias thiab Solidification:

Thaum cov khoom molten tau poured rau hauv pwm, nws pib txias thiab solidify. Thaum lub sij hawm no, cov khoom siv nyob rau hauv cov duab thiab cov yam ntxwv ntawm cov pwm kab noj hniav. Cov kev xav tseem ceeb thaum lub sij hawm txias thiab solidification muaj xws li:

Txias tus nqi:Tus nqi ntawm cov khoom cua txias cuam tshuam nws cov microstructure thiab cov khoom. Kev tswj kom txias yog qhov tseem ceeb los xyuas kom meej cov yam ntxwv ntawm cov khoom xav tau.

Shrinkage:Raws li cov khoom txias thiab solidifies, nws undergoes shrinkage. Tus qauv yog tsim los rau account rau qhov shrinkage no, kom ntseeg tau tias qhov kawg casting ua tau raws li qhov ntev ntawm qhov teev.

Kev Tiv Thaiv Tsis Zoo:Kev ua kom txias thiab khov kho kom zoo pab tiv thaiv qhov tsis xws luag xws li shrinkage voids, porosity, thiab tawg hauv casting.

5. Demolding:

Tom qab cov khoom tau ua tiav tiav, cov kauj ruam tom ntej yog tshem tawm cov casting los ntawm pwm. Cov txheej txheem no, hu ua demolding, suav nrog kev sib cais ntawm cov pwm los ntawm cov casting yam tsis muaj kev puas tsuaj rau lub casting lossis pwm. Qhov tseem ceeb ntawm demolding muaj xws li:

Pwm Tshem Tawm:Cov khoom pwm yog ua tib zoo tshem tawm, txawm tias los ntawm kev sib cais (xws li hauv cov xuab zeb casting) lossis los ntawm kev sib cais (xws li hauv peev casting). Tom qab ntawd lub casting yog muab rho tawm los ntawm pwm kab noj hniav.

Trimming:Cov khoom siv ntau dhau, xws li lub rooj vag thiab cov risers, yog txiav los ntawm kev siv cov cuab yeej txiav thiab sib tsoo. Cov kauj ruam no xyuas kom meej tias cov casting ua tau raws li qhov ntev thiab qhov chaw tiav.

6. Kev ua tiav:

Cov kauj ruam kawg hauv cov txheej txheem casting yog ua tiav, uas suav nrog kev ua haujlwm tom qab casting los npaj cov casting rau nws qhov kev npaj siv. Cov txheej txheem kev ua tiav tshwj xeeb yog nyob ntawm hom casting, qhov xav tau nto tiav, thiab lwm yam ntxiv uas yuav tsum tau ua. Cov haujlwm tseem ceeb ntawm kev ua tiav yuav suav nrog:

Machining:Qee qhov castings yuav xav tau kev ua haujlwm ntxiv, xws li milling, drilling, lossis tig, kom ua tiav qhov ntev thiab qhov ntev.

Kev kho deg:Kev kho deg xws li txhaj tshuaj blasting, sandblasting, pleev xim, lossis plating tuaj yeem siv los txhim kho qhov zoo li casting thiab tiv thaiv nws los ntawm corrosion.

Kev kho cua sov:Cov txheej txheem kho cua sov zoo li annealing lossis tempering yuav raug siv los hloov kho cov khoom siv hluav taws xob, xws li hardness lossis lub zog.

Kev soj ntsuam zoo:Qhov kev ua tiav tiav ua tiav kev tshuaj xyuas kom ntseeg tau tias nws ua tau raws li cov qauv kev cai, suav nrog qhov tseeb qhov tseeb thiab cov qauv kev ncaj ncees.

Kev sib dhos:Qee zaum, castings yuav xav tau kev sib dhos ntxiv lossis kev koom ua ke nrog lwm cov khoom los tsim cov khoom tiav.

Hauv kev xaus, thecasting txheej txheem yog ib qho nyuaj tab sis ntau yam kev tsim khoom siv los tsim ntau yam khoom thiab cov khoom. Rau qhov kev koom tes hauv cov txheej txheem casting - qauv, pwm npaj, melting thiab pouring, txias thiab solidification, demolding, thiab tiav - yuav tsum tau ceev faj npaj, precision, thiab saib xyuas kom meej kom ua tau zoo castings.

Txhua kauj ruam ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab qhov zoo thiab cov yam ntxwv ntawm cov khoom kawg. Cov qauv tsim kom zoo ua kom ntseeg tau tias qhov kev ua tiav zoo qhia txog qhov xav tau cov duab thiab qhov ntev, thaum npaj pwm thiab qhov rooj kaw qhov system tsim tswj qhov ntws ntawm cov khoom molten thaum lub sij hawm nchuav. Tswj cua txias thiab solidification tiv thaiv tsis xws luag, thiab ceev faj demolding tiv thaiv kev puas tsuaj rau lub casting. Cov kauj ruam ua tiav, suav nrog machining, kev kho saum npoo, thiab kev tshuaj xyuas zoo, xyuas kom meej tias cov casting ua tau raws li txhua qhov kev xav tau.

Cov txheej txheem casting yog dav siv nyob rau hauv ntau yam industries, xws li automotive, aerospace, kev tsim kho, thiab kos duab foundries, los tsim ib tug ntau yam array ntawm cov khoom, los ntawm cav Cheebtsam mus rau sculptures. Los ntawm kev nkag siab thiab ua tiav txhua yam ntawm rau cov kauj ruam no, cov tuam txhab tsim khoom tuaj yeem tsim cov khoom zoo tshaj plaws uas ua tau raws li qhov xav tau ntawm lawv cov ntawv thov.