1. Txhais cov khoom muag thiab qhov ntev
Qhov no yog thawj qhov yuav tsum tau ua ua ntej. Cov kav dej PVC feem ntau yog muab faib ua cov kav dej, cov kav dej, cov kav dej hluav taws xob, thiab cov khoom tsis muaj dej tsis zoo- cov kav dej.
Loj diameters (400 mm thiab saum toj no): Cov chaw no tsis tshua muaj siab xav tau ntawm cov cuab yeej rigidity, pwm qauv, thiab muaj peev xwm traction. Qhov kev txiav txim siab tseem ceeb yog seb cov kab ntau lawm puas tuaj yeem ua kom lub voj voog thiab qhov sib npaug ntawm cov kav loj - txoj kab uas hla.
Cov kab me me (20 mm-200 mm): Qhov no yog ntu kev sib tw tshaj plaws, qhov kev tsom mus rau qhov nrawm thiab ruaj khov. Kev saib xyuas yuav tsum tau them rau seb qhov sib npaug ntawm qhov ntom ntom tuaj yeem tswj tau thaum lub sijhawm siab - nrawm extrusion, nrog rau kev ua kom txias ntawm qhov sizing tuag.
2. Cov khoom tseem ceeb: Extruder thiab ntsia hlau
PVC tsis tuaj yeem ua tiav siv tus qauv PP / PE universal screws; PVC- cov ntsia hlau tshwj xeeb yuav tsum raug xaiv.
Khoom siv thiab cov qauv: PVC muaj chlorine, uas decomposes yooj yim ntawm qhov kub thiab txias los tsim cov roj corrosive. Cov ntsia hlau thiab lub thoob yuav tsum muaj kev tiv thaiv corrosion siab (xws li, los ntawm kev tsim bimetallic). Qhov ntev -rau- txoj kab uas hla ntawm cov ntsia hlau feem ntau luv dua li ntawm PP cov cuab yeej (feem ntau ntawm 25: 1 thiab 30: 1) txhawm rau tiv thaiv cov khoom seem hauv lub thoob rau ntev, uas tuaj yeem ua rau decomposition.
Kev Ua Haujlwm Cua: Ib qho ob -theem extruder lossis ib qho uas muaj qhov ua pa yuam kev yuav tsum raug xaiv. Txij li cov khoom siv PVC muaj cov dej noo thiab qis -molecular- cov khoom hnyav, qhov cua tsis txaus tuaj yeem ua rau muaj npuas lossis "pitting" ntawm phab ntsa hauv cov yeeb nkab, ua rau muaj kev cuam tshuam loj heev.
3. Kev ua tau zoo ntawm Moulds thiab Sizing Systems
Pwm Structure: Lub uniformity ntawm cov yeeb nkab phab ntsa thickness yog ncaj qha txiav txim los ntawm lub rationality ntawm ntws channel tsim nyob rau hauv PVC pwm. Thaum xaiv cov pwm, xav seb nws puas siv lub bracket-hom lossis pob tawb- hom qauv, thiab xyuas kom meej tias nws qhov sib piv compression haum rau kev tsim. Lub siab- pwm zoo tso cai rau kev tu yooj yim thiab pov tseg tsawg kawg thaum hloov xim lossis cov qauv.
Sizing thiab Txias: Qhov luaj li cas ntawm cov kav dej PVC yog ib qho kev tsim khoom. Nws yog ib qho tseem ceeb rau kev ntsuam xyuas qhov ntev ntawm lub tshuab nqus tsev sizing tank thiab kev ruaj ntseg ntawm nws lub tshuab nqus tsev, nrog rau cov dej ntws efficiency ntawm cov tshuaj tsuag txias tank. Rau siab - cov kab ntau lawm, qhov ntev ntawm lub tank dej txias thiab qhov sib xws ntawm cov tshuaj tsuag txiav txim siab seb qhov loj npaum li cas tuaj yeem ua tiav ntawm kev kub ceev, tiv thaiv cov yeeb nkab deformation los ntawm qhov txias tsis txaus.
4. Synchronization ntawm Traction thiab txiav
Cov kav dej PVC yog cov nkig thiab tawv, yog li kev tshaj tawm - cov cuab yeej ua haujlwm yuav tsum tau them nyiaj tshwj xeeb rau qhov tseeb.
Tshuab traction: Nws raug nquahu kom xaiv ntau -claw lossis roj hmab- taug qab hom traction tshuab. Rau cov kav dej loj - txoj kab uas hla, txoj kab uas hla clamping quab yuam yuav tsum muaj zog txaus thiab tsis sib xws los tiv thaiv slippage; rau me me - txoj kab uas hla siab - cov kab ceev, tsom mus rau lub tshuab traction lub synchronization raug kom tsis txhob muaj qhov hloov pauv hauv cov yeeb nkab phab ntsa thickness los ntawm kev co.
Txiav Tshuab: Kev xaiv yuav tsum yog raws li cov yeeb nkab hardness. Planetary tej tshuab feem ntau yog siv rau me me - txoj kab uas hla kav, raws li lawv tsim du, burr - dawb txiav; loj- txoj kab uas hla los yog tuab- cov kav dej uas muaj cov kav dej yuav tsum tau nti- cov tshuab txiav dawb, uas yuav tsum tsis yog txiav kom zoo nkaus xwb tab sis kuj tseem ua kom lub ntsej muag kawg ntawm lub ntsej muag kom yooj yim rau kev thauj mus los thiab kev sib txuas.
5. Compound Compatibility thiab Environmental Considerations
High Filler Compatibility: Txhawm rau txo cov nqi, ntau lub tuam txhab ntxiv ntau cov calcium carbonate rau PVC formulations. Cov cuab yeej yuav tsum muaj peev xwm tiv taus cov siab no - hnav khaub ncaws. Thaum ua tau siab - cov kav dej muab tub lim, nws yog qhov tseem ceeb uas yuav tsum muaj cov neeg muab khoom siv coj los siv- tiv thaiv kev kho mob rau cov ntsia hlau thiab cov thoob.
Kev tiv thaiv ib puag ncig thiab kev nyab xeeb: Cov txheej txheem ua haujlwm PVC tso tawm cov pa roj hydrogen chloride thiab hmoov av. Cov kab ntau lawm yuav tsum tau nruab nrog cov khoom siv hauv nruab nrab pub mis (kom txo cov plua plav) thiab siab - cov khoom siv fume purification siab. Qhov no tsis yog tsuas yog ua tau raws li qhov yuav tsum tau ua raws li ib puag ncig, tab sis kuj tseem tiv thaiv kev ua haujlwm ib puag ncig thiab kev noj qab haus huv ntawm cov neeg ua haujlwm.
6. Tswj cov txheej txheem thiab kev siv hluav taws xob
Qib ntawm Automation: Cov qauv tam sim no yog mus rau ib qho - khawm pib thiab kaw - voj tswj ntawm qhov hnyav extrusion. Nws yog qhov zoo tshaj plaws los xaiv cov cuab yeej muaj peev xwm saib xyuas qhov hnyav ntawm extrusion nyob rau lub sijhawm tiag tiag thiab tuaj yeem kho tus nqi pub. Qhov no tuaj yeem txo cov nqi raw khoom los ntawm 1%–3%, uas sawv cev ncaj qha thiab tseem ceeb ntawm cov nyiaj tau los rau qis -tus nqi- ntxiv cov khoom xws li PVC.
Zog Efficiency: Tsom ntsoov rau lub extruder lub zog noj (piv txwv li, hluav taws xob noj ib kilogram ntawm cov zis). Rau cov motors, peb pom zoo kom cov hlau nplaum ruaj khov synchronous motors lossis siab -kev ua haujlwm servo motors; piv rau cov tsoos asynchronous motors, qhov sib txawv ntawm cov nqi hluav taws xob nyob rau lub sijhawm ntev yog qhov tseem ceeb.