Cov pwm hlau siv rau kev txhaj tshuaj molding, raws li lub npe qhia, yog ua los ntawm cov hlau. Tshooj lus no yuav qhia txog hom hlau uas tuaj yeem siv los ua pwm thiab yuav ua li cas xaiv cov hlau uas phim cov khoom siv cob.
Thaum lub sij hawm txhaj tshuaj molding txheej txheem, resin nkag mus rau hauv pwm nyob rau hauv siab. Yog li ntawd, cov pwm yuav tsum muaj lub zog txaus los tiv thaiv lub siab thiab ceev ntawm resin ntws. Tsis tas li ntawd, txhawm rau tsim cov khoom lag luam resin, cov pwm yuav dhau los ntawm cov txheej txheem rov qhib thiab kaw cov pwm, thiab mating nto ntawm pwm yuav rov ua kom muaj zog. E-zoo li tus pins thiab sliders kuj yuav swb nrog nws. Yog li ntawd, muaj qee yam yuav tsum tau ua rau lub sijhawm ntev ntawm cov pwm. Tsis tas li ntawd, cov khoom siv pwm yuav tsum muaj cov yam ntxwv uas ua rau qhov kub thiab txias thiab yooj yim rau txiav. Xav txog cov xwm txheej saum toj no, cov hlau ua ntej hardened (SKD11, SKD61), hlau alloy (SC, SCM), thiab stainless hlau (SUS420) feem ntau yog xaiv los ua cov khoom pwm. Nyob rau hauv xyoo tas los no, kuj tseem muaj cov neeg siv 3D tshuab luam ntawv thiab lwm txoj hauv kev los tsim cov pwm pwm ua pwm ib ntus rau kev sim ntau lawm. Txawm li cas los xij, vim li cas vim li cas "pwm" tau siv dav hauv kev txhaj tshuaj molding yog tias siv hlau ua kom tau raws li tag nrho cov kev cai saum toj no tseem yooj yim heev.
Muaj ntau hom resins siv hauv kev txhaj tshuaj molding. Ntau hom resins muaj qhov sib txawv flowability thiab curing zog. Yog li ntawd, cov khoom siv pwm tuaj yeem hloov pauv raws li hom resin.
Resin cov ntaub ntawv xws li ABS thiab PP (polypropylene) muaj qhov hloov tau zoo thiab feem ntau siv rau sab nrauv ntawm cov khoom siv hauv tsev thiab cov khoom siv hluav taws xob. Yog li ntawd, rau kev txhaj tshuaj molding cov ntaub ntawv xws li ABS thiab PP, nws raug nquahu kom siv cov hlau dov nrog qis hardness thiab yooj yim txiav raws li cov khoom pwm.
POM yog cov khoom siv uas feem ntau siv rau cov iav yas thiab zawv zawg qhov chaw, uas muaj qhov yoog raws thiab kev ua haujlwm zoo zawv zawg, tab sis nws yooj yim rau pwm hnav. Yog li, nws raug nquahu kom siv cov hlau ua ntej uas yog hnav-tiv taus dua li cov hlau dov li cov khoom siv rau POM txhaj pwm.
PC (polycarbonate) siv rau cov lo ntsiab muag resin thiab DVD discs yog cov khoom siv pob tshab heev. Tab sis txhawm rau tsim cov khoom zoo li no, qhov saum npoo ntawm cov pwm yuav tsum tau polished rau daim iav nyhuv. Yog li ntawd, PC txhaj molding feem ntau yog siv cov khoom siv SUS ua cov khoom siv pwm, uas yooj yim rau polish thiab muaj qhov du. Nws tsis yog tsim nyog los xaiv qhov pom zoo ua ke ntawm cov khoom siv cob thiab pwm. Qhov no yog vim lub durability thiab lwm yam kev ua tau zoo ntawm cov pwm sib txawv heev nyob ntawm seb cov khoom ntawm resin khoom raug tsim. Raws li kev tsim qauv thiab kev ua haujlwm raug, qee cov ntaub ntawv pwm tsim nyog thaum lwm tus tsis yog. Cov kev sib txuas uas tau teev tseg hauv kab lus no tsuas yog siv los ua piv txwv sawv cev rau kev siv.