(12) Yas molding thiab kev ua cov txheej txheem Txhaj Molding Txheej Txheem Tsis Zoo Los Ntawm Txhais Tes (65 hom)

Cov khoom yas feem ntau yog ua los ntawm cov khoom siv polymers lossis cov khoom sib xyaw ntawm cov polymers thiab lwm yam khoom siv, uas yog molded rau hauv ib qho kev zoo nyob rau hauv tej yam kev mob tom qab rhuab.
Tom qab txias, shaping, thiab trimming, cov txheej txheem no yog molding thiab ua cov yas. Yog tias qhov kev ua tau zoo ntawm cov yas thiab cov thermosetting yas tom qab cua sov txawv, lawv txoj kev molding thiab kev ua haujlwm kuj txawv. Muaj ntau ntau txoj kev yas molding, qhov tseem ceeb tshaj plaws yog extrusion, txhaj tshuaj, calendering, tshuab moulding, thiab molding. Qhov hnyav ntawm cov khoom uas lawv cov txheej txheem suav txog li 80 feem pua ​​​​ntawm tag nrho cov khoom yas.
Extrusion molding - Extrusion molding, tseem hu ua extrusion molding lossis extrusion molding, yog qhov tseem ceeb tshaj plaws molding txoj kev rau cov thermoplastics, thiab txog li ib nrab ntawm cov khoom yas yog extruded. Extrusion tuaj yeem tsim yuav luag tag nrho cov thermoplastics, thiab cov khoom lag luam feem ntau suav nrog kev tsim khoom tas mus li, cov kav dej sib txuas, cov phaj, cov yeeb yaj kiab, hlau thiab cable cladding, thiab ntau yam khoom tshwj xeeb. Extrusion molding kuj tseem siv tau rau plasticizing, granulating, coloring, thiab blending ntawm cov ntaub ntawv thermoplastic.
Tom qab sib tov thermoplastic polymers nrog ntau yam additives tusyees, lawv raug rau cov neeg kho tshuab shear quab yuam, kev sib txhuam thaum tshav kub kub, thiab sab nraud tshav kub nyob rau hauv lub yas lub tog raj kheej ntawm lub extruder, ua rau lawv plasticized thiab melted. Tom qab ntawd, nyob rau hauv lub laub ntawm cov ntsia hlau, lawv nkag mus rau hauv cov pwm molding los ntawm lub phaj lim thiab extruded rau hauv cov khoom.
Txhaj tshuaj molding - Txhaj tshuaj molding tseem hu ua txhaj tshuaj molding lossis txhaj tshuaj molding. Txoj kev molding no suav nrog cua sov thiab yaj cov yas (feem ntau yog cov khoom siv granular) nyob rau hauv lub thoob ntawm lub tshuab txhaj tshuaj molding. Thaum nyob rau hauv lub xeev ntws, cov yas molten yog compressed thiab tsiv mus rau pem hauv ntej nyob rau hauv lub siab ntawm lub plunger los yog ntsia hlau, thiab ces txhaj sai sai rau hauv lub kaw pwm ntawm ib tug qis kub los ntawm ib tug nozzle nyob rau hauv pem hauv ntej kawg ntawm lub chim. Tom qab ib lub sij hawm txias thiab shaping, pwm qhib kom tau txais cov khoom.
Kev txhaj tshuaj molding yog tsim los ntawm lub hauv paus ntsiab lus ntawm cov hlau tuag casting. Kev txhaj tshuaj molding yog dav siv vim nws tuaj yeem tsim cov khoom nrog cov duab nyuaj, qhov ntev, lossis cov hlau ntxig rau hauv ib qho kev txhaj tshuaj, suav txog ntau dua 20 feem pua ​​​​ntawm tag nrho cov txheej txheem molding.
Cov txheej txheem txhaj tshuaj molding feem ntau muaj tsib theem: plasticization, pwm filling (xws li, txhaj tshuaj), tswj siab, txias, thiab tso pwm.
Feem ntau, cov khoom txhaj tshuaj molding muaj cov khoom pov tseg xws li cov rooj vag thiab cov neeg khiav dej num uas yuav tsum tau txiav thiab tshem tawm. Qhov no tsis yog tsuas yog siv zog ua haujlwm xwb, tab sis kuj tseem siv cov khoom siv raw.
Txoj kev loj hlob ntawm non-gate txhaj molding nyob rau hauv xyoo tas los no tsis tsuas yog overcomes cov saum toj no drawbacks, tab sis kuj yuav pab tau kom ntau lawm efficiency.