Hauv lub neej niaj hnub no, cov khoom siv yas tau siv dav hauv kev lag luam, kev ua liaj ua teb, kev tiv thaiv hauv tebchaws thiab tib neeg lub neej txhua hnub. Thaum tsim cov khoom yas no, cov yas tuav pwm yuav tsum tau tsim los siv ua ke. Tom qab kev txiav txim siab ntawm cov ntaub ntawv yas, cov khoom tsim thiab kev siv thev naus laus zis, kev tsim cov yas kov pwm yuav muaj kev txiav txim siab ntawm cov khoom zoo thiab cov khoom tsim tawm. Tam sim no, yas kov yog ib qho tseem ceeb ntawm tib neeg lub neej txhua hnub. Tsis tas li ntawd, kev siv cov yas kov hauv kev txhaj tshuaj pwm yuav cuam tshuam ncaj qha rau cov yas kov thiab tib neeg lub neej zoo.
Cov pwm peb feem ntau hais yog hais txog cov pwm ntawm cov khoom uas muaj cov duab thiab qhov loj me. Raws li cov khoom sib txawv thiab txoj kev tsim, feem ntau yog muab faib ua cov yas tuav pwm, roj hmab pwm, hlau tuag-casting pwm, iav pwm, thiab lwm yam. Feem ntau ntawm cov khoom siv hauv ntau yam lag luam yuav tsum tau kho cov pwm raws li qhov tshwj xeeb. puab. Yog li ntawd, raws li kev lag luam yas tuav pwm kev lag luam, qhov kev cia siab kuj tseem dav heev, thiab muaj peev xwm txhim kho ntau dua.
Cov yas kov pwm tau muab faib ua cov hauv qab no:
Ua ntej, cov qauv tseem ceeb tshaj plaws yog lub ntsiab channel, tseem hu ua cov khoom siv txawv teb chaws. Nws yog tus choj txuas lub chim nozzle ntawm kev txhaj tshuaj molding tshuab thiab txhaj tshuaj pwm, thiab nws kuj yog thawj qhov chaw uas cov yas hla tom qab melting rau hauv kab noj hniav. Yog li ntawd, thaum ua cov yas kov, ua ntej ua tib zoo saib xyuas cov haujlwm kom raug thiab kawm los ntawm nws. Qee lwm cov qauv tseem ceeb yog kev hloov pauv channel, uas yog, ceg channel thaum cov yas tuav pwm yog tsim. Txoj kev hloov pauv yog hais txog cov dej ntws nrog cov yas yaj ntawm qhov kawg ntawm lub ntsiab channel thiab lub rooj vag. Nws lub luag haujlwm tseem ceeb yog xa cov yas molten los ntawm lub ntsiab channel mus rau lub qhov rooj rau pwm filling ntawm qhov ceev ceev raws li qhov kev poob siab tsawg kawg nkaus.
