1. Qhov kev ua tau zoo ntawm cov pwm yuav tsum tau ua. Vim lub sij hawm luv luv thiab kev txhaj tshuaj sai ntawm cov phab ntsa nyias nyias piv rau kev txhaj tshuaj molding zoo tib yam, txhawm rau tiv thaiv kev sib tsoo ntawm cov pa roj, nyias-walled txhaj molding qhov chaw siab dua ntawm kev ua haujlwm ntawm cov pwm.
2. Xyuas kom muaj qhov sib npaug ntawm cov txheej txheem pouring. Vim tias qhov yuav tsum tau muaj siab rau cov rooj vag hauv kev tsim cov khoom yas nyias nyias, cov rooj vag loj yuav tsum tau siv, thiab lub thickness ntawm cov rooj vag yuav tsum ntau dua li cov phab ntsa thickness. Vim li no, nyias-walled txhaj pwm feem ntau siv lub tshuab khiav dej dawb.
3. Qhov yuav tsum tau ua kom nruj, lub zog, thiab hnav tsis kam ntawm cov pwm. Nyias phab ntsa txhaj molding yuav tsum muaj kev txhaj tshuaj siab, yog li ntawd, qhov nruj thiab lub zog ntawm cov phab ntsa nyias nyias yuav tsum siab, thiab lub siab muaj peev xwm yuav tsum zoo. Nyias phab ntsa txhaj pwm feem ntau siv cov qauv tuab dua thiab ntau cov kab txhawb nqa.
4. Cov cua txias ntawm cov pwm yuav tsum sib xws. Piv nrog rau cov khoom yas zoo tib yam, nyias-walled txhaj molded yas qhov chaw muaj kev ua siab ntev rau qhov seem seem thiab feem ntau raug kev txom nyem los ntawm warping thiab deformation. Yog li ntawd, nws yog ib qho tsim nyog los ntxiv dag zog rau qhov txias ntawm cov pwm kom ntseeg tau tias qhov ruaj khov ntawm cov khoom yas.
5. Qhov yuav tsum tau ua kom muaj nuj nqis rau lub tshuab ejection. Vim tias cov phab ntsa nyias nyias thiab cov ribs ntawm nyias-walled yas seem piv rau cov khoom yas zoo tib yam, uas muaj kev puas tsuaj ntau dua, muaj cov kev xav tau ntau dua rau cov txheej txheem ejection thaum lub sij hawm ejection, thiab lub zog ejection yuav tsum tau ua kom zoo dua.
