Kev txhaj tshuaj molding yog ib txoj hauv kev siv cov yas yas, los ntawm kev txhaj cov yas molten rau hauv pwm, cia nws txias thiab khov rau hauv pwm. Hauv kev txhaj tshuaj molding txheej txheem, kev xaiv ntawm ntau hom yas tuaj yeem cuam tshuam rau kev ua haujlwm, tus nqi, thiab kev ua haujlwm ntawm cov khoom. Tsab ntawv xov xwm no yuav tsom mus rau cov lus nug ntawm dab tsi plastics tuaj yeem txhaj tshuaj molded, thiab qhia txog kev siv cov yas txhaj tshuaj molded thiab lawv cov yam ntxwv.
1. Feem ntau siv cov yas txhaj tshuaj molding
Polypropylene (PP)
Polypropylene yog cov khoom siv yas uas tsis tshua muaj zog, muaj zog zoo nrog cov cua kub zoo, kua qaub thiab alkali tsis kam, hydrolysis tsis kam, thiab UV tsis kam, thiab yog siv dav hauv kev tsim khoom ntawm ntau yam khoom siv niaj hnub, khoom siv hluav taws xob, nws pib qhov chaw, thiab lwm yam. txhaj tshuaj molding, polypropylene muaj cov yam ntxwv zoo fluidity, ceev molding ceev, thiab tus nqi qis.
Polycarbonate (PC)
Polycarbonate yog cov khoom yas pob tshab, muaj zog, kub-resistant feem ntau siv hauv cov khoom siv high-end xws li tsom iav, lub koob yees duab lo ntsiab muag, thiab cov xov tooj ntawm tes. Hauv kev txhaj tshuaj molding, polycarbonate tau zoo heev toughness thiab cuam tshuam tsis kam, tab sis kuj kim heev.
Polyethylene (PE)
Polyethylene yog cov khoom siv yas uas feem ntau siv nrog kev ua haujlwm txias, tiv thaiv tshav kub, acid thiab alkali tsis kam, thiab qhov ntom ntom. Nws yog dav siv hauv kev tsim cov hnab yas, lub raj mis yas, cov thoob yas, thiab lwm yam khoom. Hauv kev txhaj tshuaj molding, polyethylene muaj qhov zoo fluidity thiab molding zog.
Polystyrene (PS)
Polystyrene yog ib lub teeb yuag, tawv, thiab du-ntim yas khoom siv dav siv hauv kev tsim TV, hluav taws xob vaj tsev, khoom ua si, thiab lwm yam. Hauv kev txhaj tshuaj molding, polystyrene muaj cov khoom zoo molding thiab nto zoo.
Polyester (PET)
Polyester yog pob tshab, tawv, kub-resistant yas khoom siv dav siv hauv kev tsim cov dej haus fwj, fwj tshuaj pleev ib ce, yas hangers, thiab lwm yam khoom. Hauv kev txhaj tshuaj molding, polyester muaj cov khoom zoo molding thiab cov tshuaj tiv thaiv zoo heev, tab sis vim nws loj shrinkage, tej yam kev tswj yuav tsum tau thaum lub sij hawm molding.
ABS
ABS yog ib qho yas engineering nrog cov khoom siv zoo, hluav taws xob rwb thaiv tsev, thiab thermal stability. Nws feem ntau yog siv rau hauv kev tsim cov khoom siv hluav taws xob, qhov chaw pib, cov khoom siv hauv tsev, thiab lwm yam. Cov molding kub feem ntau yog nyob nruab nrab ntawm 200-230 degree, pwm kub yog nyob nruab nrab ntawm 50-80 degree, thiab txhaj tshuaj yog nruab nrab ntawm 80-120MPa. Thaum xaivABScov ntaub ntawv, nws yog ib qho tsim nyog yuav tsum tau them sai sai rau lawv cov shrinkage tus nqi thiab thermal stability thaum txhaj tshuaj molding, nrog rau cov khoom xws li cov khoom yuav tsum tau ua thiab tus nqi.
Ntxiv rau cov khoom siv yas saum toj no, muaj ntau lwm yam khoom siv yas uas tuaj yeem txhaj tshuaj molded, xws li polyvinyl chloride (PVC), polyoxymethylene (POM), nylon (PA), thiab lwm yam. Txhua yam khoom yas muaj nws qhov tshwj xeeb. Lub cev thiab tshuaj lom neeg cov khoom, yog li cov yam ntxwv xws li cov khoom yuav tsum tau ua, tus nqi, thiab kev tsim khoom yuav tsum tau txiav txim siab zoo thaum xaiv cov khoom siv tshuaj molding.
Tsis tas li ntawd, nyob rau hauv cov txheej txheem kev txhaj tshuaj molding, qee cov ntsiab lus yuav tsum tau ua tib zoo saib xyuas kom zoo molding zoo. Piv txwv li, xyuam xim rau kev tswj qhov kub thiab txias, pwm kub, thiab kev txhaj tshuaj siab kom ntseeg tau tias qhov dej thiab molding zoo ntawm cov yas yaj; xaiv qhov tsim pwm tsim thiab cua txias kom tsis txhob shrinkage thiab deformation ntawm cov khoom tshwm sim los ntawm pwm tsis sib xws; Nws yog ib qho tsim nyog yuav tsum tau ua qhov kev soj ntsuam nruj nruj ntawm cov txheej txheem txhaj tshuaj molding, tshawb pom thiab cuam tshuam cov khoom tsis xws luag hauv lub sijhawm, thiab xyuas kom meej tias cov khoom ua tau raws li cov neeg siv khoom xav tau.
2. Yuav ua li cas xaiv cov khoom txhaj tshuaj molding?
Thaum xaiv cov ntaub ntawv txhaj tshuaj molding, cov hauv qab no yuav tsum tau txiav txim siab:
Cov khoom xav tau kev ua haujlwm
Raws li kev siv ib puag ncig thiab kev ua haujlwm ntawm cov khoom, xaiv cov khoom siv tshuaj molding nrog cov khoom sib xws. Piv txwv li, cov khoom siv hluav taws kub-resistant thiab corrosion-resistant yuav tsum tau siv rau kev tsim cov khoom siv kub, thiab cov ntaub ntawv uas muaj cov khoom siv zoo heev yuav tsum tau siv rau kev tsim cov khoom pib.
nqi
Tus nqi ntawm cov ntaub ntawv yuav cuam tshuam ncaj qha rau cov nqi khoom. Nws yog ib qho tsim nyog yuav tsum ua tib zoo xav txog tus nqi ntawm cov khoom siv, cov nqi ua haujlwm, cov nqi seem, thiab lwm yam, thiab xaiv cov khoom siv nrog cov nqi siab dua.
Kev ua tau zoo
Cov ntaub ntawv sib txawv ntawm kev txhaj tshuaj molding muaj cov txheej txheem sib txawv thiab cov kev xav tau. Nws yog ib qho tsim nyog los xaiv cov khoom siv nrog kev ua haujlwm zoo thiab kev ua haujlwm yooj yim los txhim kho kev tsim khoom thiab txo cov nqi tsim khoom.
khoom muaj
Cov khoom muaj thiab cov khoom muag yuav tsum raug txiav txim siab kom tsis txhob ncua sij hawm lossis cov khw muag khoom hauv kev tsim khoom vim cov khoom tsis txaus.
Environmental friendliness
Thaum xaiv cov khoom siv, nws qhov cuam tshuam rau ib puag ncig yuav tsum tau xav txog. Nws yog ib qho tsim nyog yuav tau xaiv cov ntaub ntawv zoo ib puag ncig thiab degradable kom ntau li ntau tau los txo cov pa phem ib puag ncig.
Thaum xaiv cov ntaub ntawv txhaj tshuaj molding, cov ntsiab lus saum toj no yuav tsum tau ua kom tiav, thiab kev lag luam tawm yuav tsum tau ua raws li qhov xwm txheej tiag tiag los xaiv cov khoom siv txhaj tshuaj zoo tshaj plaws. Nyob rau tib lub sijhawm, thaum siv cov ntaub ntawv txhaj tshuaj molding, nws yog ib qho tsim nyog yuav tsum tau ua tib zoo saib xyuas lawv cov yam ntxwv molding, thermal stability, thiab lwm yam ntxwv los xyuas kom meej molding zoo thiab ntau lawm efficiency.
3. Yuav txiav txim seb cov khoom siv yas puas tuaj yeem siv rau kev txhaj tshuaj molding
Txhawm rau txiav txim siab seb cov yas puas haum rau kev txhaj tshuaj molding, cov hauv qab no yuav tsum tau xav txog:
Melting kub:
Kev txhaj tshuaj molding yuav tsum tau ua kom sov cov yas mus rau qhov kub thiab txias rau molding, yog li nws yuav tsum tau txiav txim siab seb qhov kub ntawm cov yas puas tsim nyog rau kev txhaj tshuaj molding.
fluidity:
Hauv kev txhaj tshuaj molding, cov yas yuav tsum tau ntim thiab ntws hauv pwm, yog li nws yuav tsum tau kuaj xyuas seb cov khoom ntws ntawm cov yas puas haum rau kev txhaj tshuaj molding. Qee cov yas tsis ntws zoo txaus hauv lub xeev molten kom puv cov pwm, ua rau cov pwm tsis zoo.
Shrinkage:
Cov khoom yas tom qab txhaj tshuaj molding yuav poob mus rau qee qhov vim qhov txias thiab khov, thiab nws yuav tsum tau xyuas seb tus nqi ntawm cov yas puas tsim nyog rau kev txhaj tshuaj molding.
Mechanical cwj pwm:
Cov khoom yas tom qab txhaj tshuaj molding yuav tsum muaj qee yam khoom siv, thiab yuav tsum tau xyuas seb cov khoom siv ntawm cov yas puas haum rau kev txhaj tshuaj molding. Piv txwv li, qee cov yas yuav raug kev txom nyem los ntawm cov teeb meem xws li tawg los yog deformation vim muaj kev ntxhov siab tom qab molding.
tus nqi:
Kev txhaj tshuaj molding yuav tsum muaj ntau cov khoom siv yas, yog li nws yuav tsum tau xyuas seb tus nqi ntawm cov yas puas haum rau kev txhaj tshuaj molding. Nyob rau tib lub sijhawm, cov nqi rov ua dua thiab pov tseg ntawm cov yas no kuj yuav tsum tau xav txog.
Ua ntej txhaj tshuaj molding, nws yog ib qho tsim nyog yuav tsum tau ua qhov kev soj ntsuam xyuas ntawm cov yas xaiv los txiav txim seb nws puas haum rau kev txhaj tshuaj molding. Qhov no tuaj yeem raug txiav txim los ntawm kev simulating cov txheej txheem txhaj tshuaj molding thiab xyuas qhov zoo thiab cov khoom siv ntawm cov khoom molded.
4. Ntau hom yas muaj lawv tus kheej cov yam ntxwv thiab daim ntawv thov.
Nov yog qee yam ntawm cov plastics thiab lawv thaj chaw siv:
ABS yas:
ABS yas muaj cov yam ntxwv ntawm lub zog siab, hnav tsis kam, thiab cuam tshuam tsis kam, thiab feem ntau yog siv hauv kev tsim khoomtsheb, khoom siv hluav taws xob, khoom ua si, thiab lwm yam lag luam.
PC yas:
PC yas muaj cov yam ntxwv ntawm lub zog siab, siab kub tsis kam, thiab siab transparency, thiab feem ntau yog siv rau hauv kev tsim cov tsheb teeb, cov khoom siv hauv tsev, iav kev nyab xeeb, thiab lwm yam lag luam.
PP yas:
PP yas muaj cov yam ntxwv ntawm kev ua haujlwm zoo corrosion, kub tsis kam, thiab lub zog siab, thiab feem ntau siv rau hauv kev tsim khoom ntim khoom noj, khoom siv kho mob, qhov chaw pib, thiab lwm yam lag luam.
PE yas:
PE yas muaj cov yam ntxwv ntawm qhov zoo toughness, hnav tsis kam, thiab corrosion kuj, thiab feem ntau yog siv rau hauv kev tsim cov khoom siv hauv tsev, ntim tshuaj, ntim khoom noj, thiab lwm yam lag luam.
PVC yas:
PVC yas muaj cov yam ntxwv ntawm huab cua tsis zoo, tiv thaiv corrosion, thiab kev ua haujlwm, thiab feem ntau yog siv hauv kev tsim cov kav dej, xov hlau thiab cables, cov khoom siv hauv tsev, thiab lwm yam lag luam.
PA yas:
PA yas muaj cov yam ntxwv ntawm lub zog siab, siab hnav tsis kam, thiab cov tshuaj tiv thaiv zoo, thiab feem ntau yog siv rau hauv kev tsim cov khoom siv tsheb, khoom siv hluav taws xob, khoom siv tshuab, thiab lwm yam lag luam.
POM yas:
POM yas muaj cov yam ntxwv ntawm lub zog siab, siab rigidity, thiab hnav tsis kam, thiab feem ntau yog siv rau hauv kev tsim cov bearings, gears, pib qhov chaw, thiab lwm yam lag luam.
PET yas:
PET yas muaj cov yam ntxwv ntawm lub siab pob tshab, tiv thaiv tshav kub, thiab cov khoom siv kho tshuab zoo heev, thiab feem ntau yog siv hauv kev tsim cov raj mis dej haus, ntim khoom noj, fiber ntau, thiab lwm yam lag luam.
PS yas:
PS yas muaj cov yam ntxwv ntawm cov pob tshab zoo, kev cuam tshuam tsis zoo, thiab kev ua haujlwm zoo molding, thiab feem ntau yog siv hauv kev tsim khoom ntim khoom noj, hluav taws xob casings, thiab lwm yam lag luam.
Nws yog ib qho tsim nyog los xaiv hom yas uas tsim nyog tshaj plaws raws li cov khoom lag luam xav tau, kev siv tshuab, nqi, thiab lwm yam.