Kev txhaj tshuaj molding, tseem hu ua kev txhaj tshuaj molding, yog ib txoj kev txhaj tshuaj thiab molding. Hauv qab qhov kub thiab txias, cov khoom siv yas uas tau yaj tag yog sib zog los ntawm lub hau ntswj, txhaj rau hauv cov pwm kab noj hniav nrog lub siab, txias thiab solidified, thiab tom qab ntawd cov khoom lag luam molded tau txais. Kev txhaj tshuaj molding cov txheej txheem ntawm cov yas feem ntau suav nrog plaub theem: txhaws, tswj kev tswj, txias thiab demoulding, thiab kev tsim cov kev txhaj tshuaj molding yog ib puag ncig. Cov txheej txheem saum toj no tuaj yeem rov ua dua los tsim cov khoom lag luam hauv cov nkoj thiab tsis tseg. Qhov zoo ntawm txoj kev txhaj tshuaj moulding yog kev tsim tawm ceev, kev ua haujlwm siab, kev ua haujlwm tsis siv neeg, ntau yam qauv tsim thiab xim, ntau yam hloov ntawm cov duab thiab qhov loj me, cov khoom lag luam muaj tseeb, yooj yim hloov kho thiab hloov, thiab muaj peev xwm los tsim cov ntu, uas tsim nyog rau huab hwm coj ntau lawm thiab ua cov khoom tsim khoom thiab lwm cov chaw ua khoom lag luam molding.
2 rho tawm
Extrusion molding tseem hu ua extrusion molding hauv kev ua khoom yas. Cov ntaub ntawv raw nkag mus rau hauv lub thoob ntawm lub plhaw. Nyob hauv qhov kev txiav txim ntawm ntsia hlau tig, lawv thauj mus rau qhov chaw pub mis los ntawm kev sib txhuam thiab kev txiav txim siab ntawm sab hauv phab ntsa ntawm lub thoob thiab saum npoo ntawm cov ntsia hlau, qhov twg cov khib nyiab xoob tau thauj mus rau pem hauv ntej thiab ua kom tiav rau tib lub sijhawm. Hauv seem seem, qhov tob ntawm cov ntsia hlau zawj dhau los ua qhov ntiav, ntxiv kev sib txuam, ua kom sov sab nraum lub thoob thiab txoj kev sib txhuam thiab shear nruab nrab ntawm lub hau ntswj thiab sab hauv phab ntsa ntawm cov thawv tom qab txiav, cov khoom kub pib pib yaj thiab feem seem compression; ntu homogenization ua rau cov khoom tsis sib xws, extrudes yaj ntawm qhov kub, qhov ntau thiab lub siab, thiab tsim cov khoom ntawm lub taub hau, thiab tom qab ntawd ua tiav cov khoom. Qhov zoo ntawm extrusion molding yog cov khoom siv yooj yim, kev nqis peev tsawg, kev ua haujlwm yooj yim, kev ua haujlwm txuas ntxiv, kev tsim khoom lag luam ntau lawm, kev siv ntau yam, siv ib lub tshuab rau ntau lub hom phiaj, thiab ua tiav cov txheej txheem sib txawv. Kev tsim cov khoom yas siv tiav lossis muaj cov txheej txheem extrusion hauv cov txheej txheem tso tawm kwv yees li ib nrab ntawm tag nrho cov nyiaj ntawm cov khoom siv thermoplastic. Extrusion khoom yog siv hauv kev ua liaj ua teb, kev tsim kho, petrochemical kev lag luam, kev tsim tshuab, khoom siv kho mob, tsheb, khoom siv hluav taws xob, aerospace thiab lwm yam kev lag luam.
3 khoob lug molding
Hollow forming tseem hu ua tshuab moulding, uas yog tus txheej txheem ntawm kev tsim cov khoom lag luam hollow thiab cov tubular zaj duab xis. Nws yog siv qhov kub tsis sib haum ntawm lub sijhawm so ntawm polymer qeeb lub siab deformation, ua kom cov polymer ua tiav (yeeb nkab, hollow profile, thiab lwm yam) deform sai ze rau TF saum toj lub khob hloov kub ntawm polymer, thiab tom qab ntawd khaws cia cov deformation, txias rau hauv qab lub iav hloov qhov kub lossis qhov kub crystallization hauv lub sijhawm luv, thiaj li hais tias qhov deformation ntawm cov khoom tsim tau khov thiab dhau los ua cov khoom lag luam. Hollow tshuab moulding muab faib ua kev txhaj tshuaj tshuab moulding, extrusion tshuab moulding thiab ncab tshuab moulding. Muaj ntau hom thermoplastic siv nyob rau hauv tshuab raj tshuab, cov khoom siv feem ntau yog cov khoom siv polyethylene, polypropylene, PVC thiab thermoplastic polyester, thiab lwm yam, uas feem ntau siv los tsim cov kua ntim ntim ntau, xws li ntau cov fwj, cov thoob, cov kaus poom , thiab lwm yam. Cov txheej txheem kom paub qhov txawv extrusion tshuab moulding thiab txhaj tshuab moulding (suav nrog kev txhaj tshuaj tshuab) yog soj ntsuam hauv qab ntawm cov khoom. Qhov chaw txhaj tshuaj nrog lub ntaws zoo nkauj hauv qab yog qhov txhaj tshuaj tshuab moulding lossis kev txhaj tshuaj rho tawm cov khoom tshuab, thiab cov extrusion tshuab moulding khoom muaj pwm kaw kab rau hauv qab.
4 compression molding
Kev sib xyaw ua kom nruj, tseem hu ua compression molding, molding, compression forming, thiab lwm yam, yog qhov ncaj qha ntxiv ntawm cov xoob xoob (hmoov, pob zeb, clastic lossis fibrous) cov khoom tsim cov ntaub ntawv mus rau cov pwm kab noj hniav thaum qhov kub ntau, kom nws maj mam muag thiab melts, thiab nyob rau hauv cov nyhuv ntawm siab, cov ntaub ntawv sau cov pwm kab noj hniav. Lub sijhawm no, cov polymer nyob rau hauv cov yas tsim tshuaj sib txuas cov tshuaj tiv thaiv kab mob, uas yog thaum kawg hloov mus ua cov yas. Qhov zoo ntawm kev txhaj tshuaj molding yog me me poob ntawm cov khoom siv me me, shrinkage me me, rov ua dua zoo, tsis tshua muaj kev ntxhov siab hauv lub cev, kev siv tshuab tsis ruaj khov, hnav me ntawm cov pwm kab noj hniav, tsis tshua muaj nqi ntawm cov khoom siv moulding, cov qauv pwm yooj yim, tsim kom loj thiab ntau lawm efficiency. Nws yog qhov yooj yim los paub qhov tshwj xeeb thiab tsis siv neeg ntau lawm. Compression molding txoj kev siv tsuas yog siv hauv thermosetting cov khoom yas.
5 txhaj tshuaj molding
(duab duab network)
Kev txhaj tshuaj moulding yog muab cov ntawv yas lossis cov kab me me rau hauv cov kab noj hniav ntawm cov pwm. Raws li qhov kev txiav txim siab ntawm cov cua sov thiab siab, cov yas molten yog ntim nrog pwm kaw amine los ntawm kev kaw gating (khiav thiab rooj vag) ntawm qhov chaw tseem ceeb ntawm cov pwm noj, thiab mam li kwv yees. Hom qauv no haum rau cov khoom yas yas nrog cov qauv duab lossis cov ntxig rau ntau
6 khoom muaj txheej txheem
Cov txheej txheem tawv-ua txheej txheem ntawm cov yas yog txheej txheem yas tsim uas cov ntawv thermoplastic lossis cov ntawv teev dej yog tsim rau hauv cov khoom lag luam los ntawm cov pwm hauv qab ntawm qee qhov siab thiab hauv qab qhov kub yaj (ntxeem tau) kub ntawm plastics (tsawg kawg 10-20 ℃ hauv qab qhov chaw melting )). Cov txheej txheem tau tsim cov txheej txheem feem ntau yog siv rau txoj kev sib txuas theem nrab ntawm cov ntawv yas, xws li nqus plua plav sib sau, kev sib xyaw ua huab cua thiab siab txaus siab, thiab lwm yam
