Tsom xam ntawm cov laj thawj kev cuam tshuam kev txhaj tshuaj molding ntawm pwm
Cov pwm tsim tawm, yuav tsum muaj kev tsim thiab kev txhaj molding, cov yam yuav tsum tau xav txog thiab kev sib raug zoo ntawm kev txhaj tshuaj molding thiab nws yam tseem ceeb, xws li: kev txhaj tshuaj tiv thaiv thiab kab noj khov thiab kev txhim kho, kub thiab ntsuas kub, kev txhaj tshuaj pwm thiab cov qauv ntaub ntawv thiab kev faib khoom raws li lub qhov rooj loj, phab ntsa thickness, cov khoom yas, cov khoom siv yas ntawm cov khoom siv rau cov khoom siv xws li crystallinity thiab orientation.Qhov teebmeem ntawm cov khoom tau hais los saum toj no kuj txawv dua rau lwm cov ntaub ntawv yas, los yog lwm yam kev mould xws li kub, av noo, txuas ntxiv crystallization, molding txhaj tshuaj molding tshuab hloov.
Ntawm cov txheeb ze uas cuam tshuam txog kev txiav txim siab ntawm molding, pwm yog tus yuam sij rau kev txiav txim siab cov khoom yas uas ua tau raws li cov kev xav tau zoo.Yog pwm tsim tsim nyog yuav cuam tshuam cov khoom zoo ntawm cov khoom yas.
Vim yog cov kabmob pwm tuaj raws li cov yas khoom siv uas yuav tsum muaj me me thiab cov ntsws ntawm cov khoom siv, thiab lub rhaub zaws feem ntau yog los ntawm phau ntawv cov khoom siv ntawm cov khoom siv raws li kev pom zoo los ntawm cov yas ua khoom ntawm qhov ntau ntawm qhov tseem ceeb, nws tsis yog nrog lub qhov rooj nkag cov khoom siv, cov khoom lag luam, qhov khoom loj, thiab cov khoom ntim rau lub rooj laj kab mob.Qhov tseem ceeb tshaj plaws uas cuam tshuam cov txav ntawm cov plastics xws li thermal shrinkage, theem hloov shrinkage, orientation shrinkage , nrawm shrinkage thiab ywj siab rov qab, thiab cov teeb meem no muaj feem xyuam rau cov kev mob mould los yog kev khiav hauj lwm rau cov kev mob ntawm cov tshuaj txhaj tshuaj.
Raws li kev txhaj cov tshuaj molding yog los ntawm cov khoom (hmoov los yog pellets) rau cov kua (cov khoom noj) rau cov khoom (cov khoom) cov txheej txheem kev sib hloov.Los ntawm cov khoom siv yaj, thiab los ntawm cov tawv nqaij, teb thiab ua haujlwm nrawm thiab ua rau.Hauv cov kev ua haujlwm ntawm cov hauj lwm, cov khoom sib txawv (thermosetting los yog thermoplastic, crystalline lossis non-crystalline, enhanced lossis tsis-kho, thiab lwm yam) muaj cov qauv sib txawv ntawm cov kabmob thiab cov khoom rheological. cov khoom, qhov loj me, cov duab, qhov muaj tseeb thiab qhov zoo ntawm cov khoom yas yuav raug cuam tshuam los ntawm cov xwm txheej cuam tshuam rau saum toj no "field".
Nyob rau hauv no txoj kev, tus intrinsic kev sib raug zoo ntawm cov txheej txheem thiab cov polymer kev ua tau zoo, cov qauv thiab cov khoom yas yuav tsum tau expressed los ntawm cov khoom yas.Qhov tsom ntawm cov sab hauv kev sib raug zoo yog qhov tseem ceeb heev rau tubntxhais kos txog kev txhaj tshuaj molding, tsim tsim thiab siv pwm raws li kos duab, thiab txawm tias yuav tsum tau xaiv cov tshuaj molding khoom.
Precision txhaj tshuaj molding yog txawv ntawm kev txhaj tshuaj molding hauv kev txhaj tshuaj thiab kev txhaj tshuaj tiv thaiv.Xaiv txoj kev txhaj tshuaj molding feem ntau SIV TSHIAB - siab los yog ultra - siab - siab txhaj, siab - ceev txhaj tshuaj kom tau ib qho me me molding shrinkage