1. Qhov Kub Kub: Qhov kub kub yog qhov tseem ceeb tshaj plaws; lub chim kub qhov chaw siv tsuas yog raws li cov lus qhia. Qhov ntsuas kub tiag tiag tuaj yeem ntsuas ntawm lub nozzle lossis txiav txim siab siv huab cua- txoj kev txhaj tshuaj. Lub chim kub qhov chaw nyob ntawm qhov xav tau melting kub, ntsia hlau ceev, rov qab siab, txhaj tshuaj ntim, thiab molding lub sij hawm. Yog tias koj tsis muaj kev paub dhau los ua cov qib tshwj xeeb ntawm cov yas, thov pib nrog qhov kev pom zoo qis tshaj plaws.
Txhawm rau tswj tau yooj yim, lub thoob tau muab faib ua ib cheeb tsam; Txawm li cas los xij, cov cheeb tsam no tsis tas yuav tsum tau teem rau tib qhov kub thiab txias. Rau kev khiav haujlwm ntev lossis siab -kub ua haujlwm, teeb tsa qhov kub ntawm thawj cheeb tsam (thaj tsam nram qab) kom qis dua; qhov no tiv thaiv cov yas los ntawm melting prematurely thiab bridging nyob rau hauv lub feed caj pas. Ua ntej pib txheej txheem molding, xyuas kom meej tias cov roj hydraulic, lub tshuab ziab khaub ncaws, pwm, thiab lub thoob yog tag nrho ntawm lawv qhov kub thiab txias.
2. Melt Temperature: Qhov kub yaj ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab cov khoom ntws ntawm cov khoom molten. Txij li cov yas tsis muaj ib qho, meej melting point-tab sis yog qhov melting * range*- qhov cuam tshuam ntawm qhov kub thiab txias ntawm flowability txawv nyob ntawm tus qauv thiab muaj pes tsawg leeg ntawm cov polymer cov saw hlau molecular. Rigid molecular chains (xws li cov pom hauv PC thiab PPS) yog qhov muaj txiaj ntsig zoo rau qhov kub thiab txias. Hloov pauv, qhov ntws ntawm cov saw hlau hloov tau yooj yim (xws li cov hauv PA, PP, thiab PE) tsis hloov pauv li qhov kub thiab txias. Yog li ntawd, qhov tsim nyog txhaj tshuaj kub yuav tsum raug xaiv thiab calibrated raws li cov khoom tshwj xeeb raug ua tiav.
3. Pwm Kub: Qee cov yas yuav tsum muaj pwm kub ntau dua vim lawv qhov kub thiab txias crystallization los yog qeeb crystallization. Lwm cov ntaub ntawv yuav xav tau cov pwm kub tshwj xeeb- siab lossis qis- kom ntseeg tau tias qhov ruaj khov, txo qis deformation, lossis pab kom yooj yim ejection ntawm pwm. Piv txwv li, PC feem ntau xav tau pwm kub tsawg kawg yog 60 degree, qhov PPS yuav xav tau qhov kub siab tshaj 160℃kom ua tiav qhov zoo tshaj plaws thiab txhim kho cov yam ntxwv ntws. Yog li ntawd, pwm kub plays lub luag haujlwm tseem ceeb hauv kev ua kom zoo ntawm cov khoom zoo, txo qis deformation, kom ntseeg tau qhov tseeb qhov tseeb, thiab pab txhawb cov txheej txheem molding.
4. Kev Txhaj Tshuaj Siab: Kev txhaj tshuaj siab yog lub zog xav tau rau cov khoom siv molten kom kov yeej kev khiav hauj lwm thaum nws nce mus los ntawm cov pwm; Nws cuam tshuam ncaj qha rau cov khoom tseem ceeb xws li qhov ntev, qhov hnyav, thiab deformation. Qhov yuav tsum tau txhaj tshuaj siab txawv nyob ntawm seb cov khoom yas tshwj xeeb raug tsim. Rau cov ntaub ntawv xws li PA thiab PP, ua kom lub siab tuaj yeem txhim kho cov dej ntws zoo. Tsis tas li ntawd, qhov loj ntawm qhov kev txhaj tshuaj siab txiav txim siab qhov khoom ntom ntom - thiab, los ntawm kev txuas ntxiv, nws lub ntsej muag gloss. Tsis muaj ib tus nqi ruaj khov rau kev txhaj tshuaj siab; es, raws li qhov nyuaj ntawm kev sau cov pwm nce, qhov yuav tsum tau txhaj tshuaj yuav tsum tau nce ntxiv.
