Ua kom tiav daim ntawv teev cov ntsia hlau tshwj xeeb rau kev txhaj tshuaj molding khoom

Feem ntau, cov ntsia hlau tuaj yeem muab faib ua hom zoo tib yam, hom gradient, hom kev hloov pauv, hom sib xyaw, hom sib cais, hom sib cais, nrog rau ntau yam thaiv hom, tus pin hom, DIS cais hom, thiab hom pa; Tus naj npawb ntawm cov ntsia hlau taub hau tuaj yeem yog ib leeg lossis sib txawv.
Rau cov yas uas tsis muaj nplaim taws, cov ntsia hlau zoo tib yam tuaj yeem siv rau kev ua, thiab cov kab sib txawv yuav tsum tau xaiv raws li qhov sib txawv ntawm cov viscosities. Rau cov yas nrog kev ua haujlwm tshwj xeeb (PC, PMMA, PA, LCP, PES, PET, PVC, CA, CP, thermosetting plastics, thiab lwm yam), cov khoom tshwj xeeb (pob tshab optical lo ntsiab muag, LCD lub teeb-emitting daim hlau - daim ntawv qhia lub teeb, lub raj mis blanks , gears, connectors, etc.), los yog granule zoo li tus (hmoov, ntawv) plastics, halogen-free khoom, tshwj xeeb hlau dej hiav txwv screws yuav tsum tau siv. Universal screws tsis superior nyob rau hauv cov nqe lus ntawm plasticization thiab hwj chim noj piv rau tshwj xeeb screws rau ib yam ntawm cov yas. Hauv qab no yog cov lus qhia txog ntau yam khoom tshwj xeeb thiab cov ntsia hlau tshwj xeeb uas tsim los rau cov kev xav tau tshwj xeeb.
PC tshwj xeeb ntsia hlau
PC tshwj xeeb ntsia hlau. jpg ib
PC yog lub siab viscosity uas tsis yog crystalline yas nrog cov dej ntws tsis zoo, yooj yim degradation thaum rhuab mus ntev, siab noj torque, nyuaj hauv melting, thiab yooj yim blockage. Nws yuav tsum muaj cov khoom siv kub thiab kev txhaj tshuaj siab, nrog rau qhov nqaim ntawm cov khoom siv kub hloov thiab kev ua haujlwm tsis zoo piv rau PMMA.
Cov ntsia hlau txais yuav cov hmoov txhuas hlau tag nrho hardening (tag nrho cov alloy) los yog imported high alloy steel tag nrho hardening kev kho mob, zoo withstanding kub, siab torque, siab cuam tshuam, hnav tsis kam, corrosion kuj, du thiab tsis muaj pores los txo deg adhesion thiab degradation. Cov qauv ncauj lus kom ntxaws yog ua tib zoo kho, thiab cov nplaum cia yog tiv thaiv tau zoo. Qhov qis shear tsim muaj kev tsim hluav taws xob tsawg. Feem ntau, me me thiab nruab nrab txoj kab uas hla yog siv, thiab molding PC ABS ntxiv rau PC, PP-R, nplaim retardant ABS, thiab lwm yam muaj cov teebmeem zoo. Nws tseem tuaj yeem siv los tsim cov khoom siv dav dav thiab PMMA cov khoom lag luam zoo tib yam.
Jinyang Lub Tuam Txhab koom tes nrog kev lag luam hauv ultra-nyias precision molding, thiab lub lens pob tshab yuav tsum tsim kom zoo dua ntawm cov ntsia hlau tsis. Nyob rau tib lub sijhawm, nws muab cov ntsia hlau txoj kab uas hla hloov los ntawm qhov loj mus rau me me, qhov ntev hloov ntawm luv luv, thiab ua rau lub zog txhaj tshuaj ntau dua 3000Kgf / cm3. Lub rooj zaum txhaj tshuaj yog txav mus rau pem hauv ntej rau kev hloov kho (tom qab hloov kho, nws tuaj yeem rov qab los rau nws lub xeev qub qub) Jinyang ntsia hlau pas nrig.
PMMA tshwj xeeb ntsia hlau
PMMA tshwj xeeb. jpg ib
PMMA yog lub siab viscosity uas tsis yog crystalline yas uas muaj zog toughness thiab siab noj torque. Nws yog ib qho nyuaj rau yaj, yooj yim los thaiv, rhiab rau shear thiab yooj yim rau degrade, thiab muaj me ntsis flowability. Nws yuav tsum tau txhaj tshuaj ntawm cov khoom siv kub thiab siab, nrog rau ntau yam khoom siv kub hloov kho thiab kev ua haujlwm zoo.
Cov ntsia hlau muaj qhov sib piv loj compression thiab yog tag nrho hardened nrog imported siab alloy steel, zoo tiv taus siab torque thiab siab cuam tshuam. Qhov saum npoo yog electroplated nrog nyuaj chromium los txo qhov adhesion thiab degradation, nrog zoo plasticization uniformity, zoo xim sib tov, tsis tshua muaj shear tsim, tsawg tshav kub, thiab tsawg degradation tus nqi. Feem ntau, qhov nruab nrab txoj kab uas hla yog siv los ua PMMA, PP-R, PC, thiab ABS nrog cov txiaj ntsig zoo.
PA6/66/46/6T tshwj xeeb ntsia hlau
PA6 tshwj xeeb. jpg ib
PA yog cov yas uas tsis muaj viscosity crystalline uas muaj qhov kub thiab txias, ceev melting ceev, zoo nws tus kheej lubrication, thiab zoo flowability. Nws belongs rau dej-raws li thiab yooj yim rau salivate, kub rhiab heev thiab yooj yim rau txias, thiab muaj siab noo noo nqus, uas yog ib qho yooj yim mus daig nyob rau hauv lub ntsia liaj qhov rooj zawj ntawm seem noj, ua coloring nyuaj.
Tom qab optimizing qhov parameter tsim ntawm PA tshwj xeeb ntsia hlau, nws muaj compression piv piv, meej backstop, zoo xim sib tov nyhuv, ruaj khov tus nqi, siab plasticization efficiency, thiab zoo tso pa tawm. Feem ntau, noj cov kab nruab nrab thiab molding PA, PP, LCP thiab lwm yam crystalline low viscosity plastics muaj cov txiaj ntsig zoo Nws kuj tuaj yeem raug molded rau hauv cov yas dav dav.
Nws tsis haum rau siab viscosity thiab tsis zoo thermal stability plastics xws li PC thiab PMMA nplaim-retardant ABS (nrog siab nruab nrab kub thiab decomposition), thiab nws yog tsim nyog los electroplate hard chromium rau tsim POM. Lub nozzle yog qhov zoo tshaj plaws rhuab ntawm qhov kub thiab txias, thiab nws yog ib qho tsim nyog yuav tau ntxiv cov khoom siv los tiv thaiv salivation.
PPO tshwj xeeb ntsia hlau
PPO yog cov khoom siv amorphous uas nyuaj rau yaj, yooj yim los thaiv, rhiab rau shear, thiab yooj yim rau degrade.
Nws raug pom zoo kom siv dual alloys los txhim kho kev hnav thiab corrosion kuj. Qib C yog txaus, nrog cov ntsia hlau du thiab ruaj khov tsim.
PBT plus GF nplooj siab ntsia hlau
PBT yog saturated resin, semi crystalline khoom nrog siab melting degree, sai solidification ntawm crystallization, yooj yim decomposition, siab rhiab heev, thiab yuav tsum tau ntxiv iav fiber.
JY dual alloy lossis tag nrho alloy yuav tsum tau siv los txhim kho kev hnav tsis kam. Muaj peb qib engineering muaj nyob ntawm tus nqi ntawm fiber ntau ntxiv, thiab lub siab tsim los ntawm cov ntsia hlau ruaj khov. Kev tsim PBT ntxiv rau GF, PA ntxiv rau GF thiab lwm yam crystalline low viscosity zoo tib yam engineering plastics muaj cov txiaj ntsig zoo.
PVC tshwj xeeb ntsia hlau
PVC yas tuaj yeem muab faib ua cov ntawv granular thiab hmoov, uas yog rhiab heev rau qhov kub thiab txias thiab yooj yim rau decompose. Nws muaj viscosity siab thiab muaj zog corrosiveness. Tus tsim ntawm cov ntsia hlau muaj ob yam ntxwv: qhov saum npoo yuav tsum yog corrosion-resistant; Tsis muaj kev sib cais sib cais lossis sib cais mesons.
Cov ntsia hlau muaj cov yas zoo, tsis tshua muaj cua sov, thiab tiv taus acid corrosion. Vim tias tsis muaj lub nplhaib roj hmab, nws tsis tuaj yeem siv rau cov yas uas tsis muaj viscosity thiab cov khoom uas muaj qhov raug txhaj tshuaj ntau dua thiab kev ntsuas siab.
Muaj ob hom ntsia hlau tsim: cov ntsia hlau thiab cov kua nplaum sib cais lub taub hau yog kev sib xyaw ua ke; Screw thiab dispensing taub hau yog sib cais. Yog tias cov khoom lag luam muaj cov kev xav tau zoo thiab tsuas yog tsim ib qho yas (PVC), kev siv hom kev sib txuas yog qhov tsim nyog tshaj plaws. Yog tias tsis yog, ib hom kev sib cais tuaj yeem siv tau. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias kev sib cais ntawm cov ntsia hlau thiab lub taub hau sib faib tuaj yeem ua rau cov khoom sib txuam tau yooj yim. Tab sis peb lub tuam txhab qhia ntxiv qhov ntsuas kub siab rau kev tswj xyuas qhov kub thiab txias thaum xaiv cov ntsia hlau. Vim tias qhov xav tau ntawm cov cua kub dissipation thiab cua txias, thaum ua cov khoom siv PVC, cov raj yaj yuav tsum tau siv nrog kev ntsuas cua txias ua ke nrog cov ntsia hlau. Tsis suav nrog PVC mos rau ua cov khoom ua si.
PET tshwj xeeb ntsia hlau
PET yas yog cov khoom siv raw rau cov yas ntim cov dej haus tam sim no. Nws muaj viscosity tsawg, zoo fluidity, loj tshwj xeeb tshav kub muaj peev xwm, thiab yog ib qho yooj yim rau lo. Nws muaj qhov kub molding siab, tab sis nqaim cov khoom kub hloov kho ntau yam thiab kev ua haujlwm tsis zoo. Yog tias cov khoom kub siab dhau lawm, cov ntsia hlau shear loj dhau, lossis qhov kev sib hloov ceev ceev dhau, PET yas yooj yim los tsim acetaldehyde thaum txhaj molding, uas yuav ua rau acidification.
Rau PET thiab PET lub raj mis preforms, cov yam ntxwv ntawm kev ceev thiab zoo li yas yas yuav tsum tau. Cov ntsia hlau muaj cov yas zoo, kev ruaj ntseg siab, cov khoom siv tsis zoo, ceev melting ceev, thiab siab yield thaum lub raj mis tshuab. Nws tseem tuaj yeem raug molded rau hauv cov yas dav dav.
CP, CA acidic ntsia hlau Cheebtsam:
Vim muaj zog corrosiveness ntawm acidic plastics xws li CP thiab CA, tshwj xeeb tsim tau tsim rau cov qauv thiab kho nto ntawm screws, chim, thiab lwm yam plasticized qhov chaw. Cov ntsia hlau Cheebtsam muaj corrosion kuj zoo. Nws raug nquahu kom siv lub tog raj kheej dual alloy rau kev tiv thaiv corrosion. Jinyang ntsia hlau
PU, TPU tshwj xeeb screws
Tsim los rau cov yam ntxwv ntawm PU shear rhiab heev, yooj yim overheating, muaj zog adhesion, thiab nto alloy, du noj, siab plasticization efficiency, thiab kub tsis tshua muaj siab.
Cov roj hmab mos, EVA foaming tshwj xeeb ntsia hlau
Tsawg shear, siab conveying efficiency tsim, nto corrosion kuj.
Marble qauv tshwj xeeb ntsia hlau
Ob txoj kev xaiv: A: tsuas yog hloov cov nyhuv marble ntsia hlau; B: Hloov cov khoom tiav ntawm marble qauv ntsia hlau cov kav dej, tswj lub computer los hloov cov kev pab cuam lossis ntxiv cov khoom siv hluav taws xob.
Tshwj xeeb ntsia hlau chim pab pawg rau bakelite thiab urea
Lub thoob yog rhuab los ntawm kub roj voj cua sov, thiab cov ntsia hlau yog pom zoo kom ua los ntawm nruab nrab qib ob alloy; Cov tshuab yas qub kuj tuaj yeem hloov mus rau hauv bakelite rau kev tua.
Lub taub hau sib xyaw ua kom muaj xim sib xyaw ua haujlwm
Lub taub hau sib xyaw yog lwm qhov tsim ntawm lub taub hau ntsia hlau, uas feem ntau txhim kho cov xim sib xyaw. Txawm li cas los xij, muaj cov kev txwv hauv qab no thaum siv nws: nws tuaj yeem ua rau muaj zog rov qab thaum lub nplaum nplaum nplaum; Lub sij hawm melting nce; Tsis haum rau siab viscosity yas xws li PMMA, PC, thiab lwm yam. Yog hais tias tus neeg siv khoom tsis txaus siab rau cov xim sib xyaw, lawv tuaj yeem ua rau lub siab rov qab los thiab txo cov ntsia hlau ceev, uas yuav muaj qee yam cuam tshuam. Yog tias cov neeg siv tsis kam siv lub taub hau sib xyaw kom ntxiv cov xim sib xyaw, lawv tuaj yeem siv chrysanthemum zoo li cov kua nplaum mesons. Txuas cov khoom siv yeeb nkab taub hau, txuas ntxiv nozzle, catapult nozzle, thiab lwm yam kub screws
Taw qhia rau Txhaj Molding Ntsia Hlau
Cov ntsia hlau yas tau muab faib ua peb ntu raws li nws cov duab geometric
1. Pub cheeb tsam
Ntu no yog qhov tob ntawm cov ntsia hlau ntsia hlau, qhov twg cov khoom yas yog nruj nreem compressed los ua ib lub txaj khoom. Vim tias cov nyhuv shear ntawm lub raj yaj, ntxiv rau maj mam nce cov yas kub, cov yas kuj tseem thauj mus rau pem hauv ntej. Nws yog ib qho tsim nyog los xyuas kom meej tias cov yas pib yaj thaum kawg ntawm ntu pub mis (uas yog, nws yuav tsum tau preheated rau lub melting point). Qhov ntev ntawm ntu no tau muab faib ua crystallinity (PA, POM, PE, PP, CA, thiab lwm yam), tsis muaj crystallinity (AS, PS, PU, ​​ABS, thiab lwm yam), thermal rhiab heev (PVC, thiab lwm yam), iav ntxiv , thiab lwm yam. Feem ntau, cov khoom tshwj xeeb kub ↑, melting point ↑, thiab latent tshav kub ↑ yuav tsum tau ntau cua sov kom sov mus txog rau lub melting point, thiab seem noj yuav tsum ntev; Cov khoom hauv lub xeev thermal conductivity ↓, hloov cov cua sov qeeb, qeeb kub nce hauv qhov chaw yas, thiab ntu pub mis ntev; Preheat ↑, ntu pub mis yuav luv. Cov ntaub ntawv crystalline yog qhov ntev tshaj plaws, ua raws li cov ntaub ntawv amorphous, thiab thermal rhiab heev yog qhov luv tshaj. Jinyang ntsia hlau
2. Compression cheeb tsam
Ntu no yog ib qho maj mam txo cov ntsia hlau zawj nrog cov hniav sib sib zog nqus, thiab nws cov haujlwm muaj xws li cov khoom siv yas yaj, sib xyaw, shear compression, thiab cov pa tawm. Yas yuav yaj tag nrho nyob rau theem no thiab nws cov ntim yuav txo qis, yog li kev tsim ntawm compression degree (compression ratio) yog qhov tseem ceeb. Rau amorphous plastics, ntu compression yuav tsum ntev dua, txwv tsis pub yog tias qhov ntim ntawm cov ntsia hlau zawj txo qis sai thiab cov khoom ntim tsis txo qis, qhov thaiv yuav tshwm sim. Crystalline plastics tiag tiag tsis yog tag nrho crystalline (xws li PE: 40-90 feem pua ​​crystallinity, LDPE: 65 feem pua ​​crystallinity), yog li tam sim no muaj qhov sib txawv ntawm qhov ntev ntawm qhov compression seem. Thermal rhiab heev, siab viscosity, hluav taws kub tsis kam, tsis tshua muaj conductivity, thiab siab additives tag nrho yuav tsum tau tshwj xeeb xav txog.
3. Kev ntsuas cheeb tsam
Cov seem no yog qhov ruaj khov qhov tob ntawm cov ntsia hlau ntsia hlau zawj. Nws lub luag haujlwm tseem ceeb suav nrog kev sib xyaw, kua nplaum tawm thiab pub mis, thiab ntsuas ntsuas. Tsis tas li ntawd, nws yuav tsum tau muab lub siab txaus los tswj qhov kub thiab txias ntawm cov kua nplaum thiab ruaj khov tus nqi ntawm cov yas molten. Ib ntu metering ntev ua rau muaj kev sib xyaw zoo dua; Yog tias qhov ntsuas qhov ntev dhau lawm, nws yooj yim rau cov yaj kom nyob ntev ntev thiab ua rau thermal decomposition; Yog tias nws luv dhau, nws tuaj yeem ua rau kub tsis sib xws.
Cov yam tseem ceeb cuam tshuam rau plasticization zoo
Length to diameter ratio =ua hauj lwm ntev ntawm cov ntsia hlau (mm) ÷ ntsia hlau txoj kab uas hla (mm)
Yog hais tias tus nam piv yog loj, cov zaub mov yog yooj yim noj tusyees, tab sis nws yog ib qho yooj yim mus overboard. Cov yas uas muaj thermal stability zoo dua tuaj yeem siv cov ntsia hlau ntev dua los txhim kho kev sib xyaw ua ke yam tsis muaj kev txhawj xeeb txog kev hlawv; Yas uas tsis zoo thermal stability yuav siv tau nrog luv luv screws los yog tsis muaj threads ntawm qhov kawg ntawm cov ntsia hlau. Compression ratio=feed tooth depth (mm) ÷ metering tooth depth (mm) Xav txog qhov compressibility ntawm cov khoom, filling degree, reflux, compactness ntawm cov khoom, hloov tshav kub thiab tso pa tawm. Ib qho kev tsim nyog hauv compression muaj peev xwm nce cov yas, ua kom txo cov cua, thiab cuam tshuam rau qhov sib txawv ntawm cov zis. Tsis tsim nyog compression piv yuav ua rau lub cev muaj zog ntawm cov yas. Qhov siab dua qhov compression piv, qhov siab dua qhov kub nce generated thaum lub sij hawm plasticization txheej txheem ntawm cov yas nyob rau hauv cov khoom siv yeeb nkab, thiab qhov zoo dua qhov sib xyaw ntawm cov yas hauv cov txheej txheem ntawm cementation, tus txheeb ze tawm ntim tau txo qis heev. Thaum cov hniav qhov tob ntawm qhov chaw pub mis yog qhov tob dua, lub peev xwm conveying yog ntau dua, tab sis lub zog xav tau rau cov ntsia hlau yog ntau dua; Cov hniav qhov tob ntawm ntu pub mis yog qhov ntiav dhau, lub peev xwm thauj khoom tsis txaus, thiab qhov sib piv compression tsis txaus. Thaum cov hniav qhov tob ntawm qhov ntsuas qhov tob yog qhov sib sib zog nqus thiab qhov sib piv tsis txaus, yuav tsum muaj kev pub mis loj dua; Thaum nws ntiav heev, nws yooj yim rau overheat thiab hlawv. High compression ratio yog haum rau cov yas tsis fusible, tshwj xeeb tshaj yog rau cov yas uas tsis tshua muaj melting viscosity thiab thermal stability. Tsawg compression piv yog haum rau fusible plastics, tshwj xeeb tshaj yog rau cov melting viscosity siab thiab kub rhiab plastics.
Txoj cai ntawm kev xaiv cov ntsia hlau
Rau qhov sib xyaw ua ke zoo tshaj plaws, tus qauv tsim nrog qhov sib piv loj, ntau cov hniav, qhov loj compression piv, thiab qhov ntsuas qhov tob tob yuav tsum tau txais yuav.
Txhawm rau tiv thaiv kom tsis txhob muaj cua sov, tus qauv tsim nrog qhov sib piv me me, cov hniav tsawg dua, ntu compression ntev dua, qhov sib piv me me, thiab ntsuas qhov tob ntawm cov hniav yuav tsum tau saws.
Rau cov neeg uas xav kom ua tiav tus nqi siab plasticization, txais yuav tus qauv tsim ntawm Jinyang ntsia hlau nrog qhov sib piv me me thiab ntsuas qhov tob ntawm cov hniav.