I. Raw Material Formulation thiab Rheological Properties
CPVC Resin Nws tus kheej: Vim nws cov ntsiab lus chlorine siab ntawm kwv yees li 67%, CPVC muaj qhov kub thiab txias siab dua li ntawm PVC thiab nthuav tawm cov viscosity siab heev. Nyob rau tib qhov kub thiab txias npaum li cas, qhov txaus siab xav tau rau CPVC feem ntau yog 1.5 mus rau 2 npaug ntawm tus qauv PVC. Yog hais tias cov resin muaj ib tug dav molecular hnyav tis los yog tsis ruaj tsis khov polymerization degree, qhov no tuaj yeem ua rau muaj kev hloov pauv siab.
Lubricant System: Qhov no yog tus yuam sij rau kev tswj lub siab.
External Lubricant: Thaum txo kev sib txhuam ntawm cov khoom thiab cov pwm phab ntsa tuaj yeem txo cov pwm siab, qhov ntau dhau tuaj yeem ua rau cov ntsia hlau slippage thiab cov yas tsis zoo.
Tsis txaus Lubricant Sab Nraud: Cov khoom siv lo rau cov pwm, ua rau cov dej tsis kam ua kom muaj zog, pwm siab mus rau qhov siab, thiab muaj peev xwm ua rau "pwm hlawv."
Kev tsis sib haum xeeb ntawm cov lubrication sab hauv thiab sab nraud: CPVC formulations feem ntau xav tau lub tshuab lubrication zoo dua los txo cov kev sib txhuam sab hauv, yog li tswj tag nrho lub siab.
Fillers thiab lwm yam khoom siv ntxiv: Cov khoom siv ntau dhau xws li calcium carbonate ua rau kom yaj viscosity, ua rau muaj kev tiv thaiv ntau dua li cov khoom dhau los ntawm cov pwm thiab ua rau lub siab nce. Nyob rau tib lub sijhawm, qhov tsis sib xws ntawm cov khoom ntim tuaj yeem ua rau muaj kev hloov pauv hauv zos.
II. Pwm Tsim thiab Cov Qauv Txheej Txheem
Compression Ratio: Qhov no yog qhov tseem ceeb tshaj plaws siab - cuam tshuam qhov ntsuas hauv pwm tsim. Yog tias qhov sib piv compression siab dhau lawm (ua rau muaj kev txo qis hauv qhov kev sib tw khiav - ntu ntu), cov khoom raug compressed sai, ua rau muaj kev nce siab hauv siab. Thaum qhov no txhawb kev compaction, nws yuav ua rau overheating thiab decomposition ntawm CPVC; conversely, yog hais tias tus compression piv yog tsawg heev, tsis txaus siab yuav ua rau cov yeeb nkab tsis txaus.
Ntev ntawm Txoj Cai Ncaj Ncees (Shaping Section): Qhov ntev ntawm qhov ncaj, qhov ntau dua qhov kev tiv thaiv kom yaj ntws hauv qhov tuag, thiab siab dua qhov tuag siab. Qhov no pab ua kom rov qab siab thiab txhim kho plasticization; Txawm li cas los xij, rau CPVC, ntu ntev ntev ntev txhais tau hais tias cov khoom tseem nyob hauv qhov kub thiab txias rau lub sijhawm ntev, ua rau muaj kev pheej hmoo ntawm decomposition.
Flow Channel Smoothness thiab Streamlined Design: Tuag cov ces kaum, cov kauj ruam, los yog tsis txaus nto tiav nyob rau hauv lub ndlwg channel ncaj qha cuam tshuam cov ndlwg ntawm siab -cov ntaub ntawv viscosity zoo li CPVC, ua rau lub zos siab spikes thiab stagnation- ntxias decomposition.
Manifold Support Structure: Yog tias qhov kev txhawb nqa manifold (cov qauv kev txhawb nqa sab hauv hauv lub taub hau tuag) tsis yog tsim los nrog cov ntaub ntawv streamlined, cov khoom yuav tawm ntawm "weld kab" tom qab dhau los ntawm kev txhawb nqa. Cov no yuav tsum tau smoothed tawm los ntawm cov buffer grooves tom ntej thiab compression seem, ib tug txheej txheem uas ua rau ntxiv siab poob.
III. Cov Txheej Txheem Ntau Lawm
Kev Kub Kub: Cov nyhuv kub ntawm CPVC siab yog nonlinear.
Tsis tshua muaj kub: Cov khoom siv tsis yog plasticized; cov khoom tawv tawv los yog cov nplaum nplaum hnyav heev raug yuam los ntawm kev tuag, ua rau muaj kev kub ntxhov thiab kev hloov pauv loj heev, uas tuaj yeem ua rau cov khoom puas yooj yim.
Kub siab heev: Txawm hais tias pom tseeb viscosity txo qis thiab siab poob ib ntus, CPVC yog qhov ua rau degradation. Ib zaug degraded, nws tso tawm hydrogen chloride thiab tsim char, uas txhaws cov ndlwg channel thiab ua rau lub siab nce mus rau qhov txawv txav.
Screw ceev thiab pub tus nqi: Cov no yog cov ncaj qha txoj cai ntawm kev tswj siab. Ua kom cov ntsia hlau nrawm nce tus nqi extrusion, ua rau tuag siab kom nce raws li. Txawm li cas los xij, CPVC yog qhov tseem ceeb heev rau shear tshav kub. Yog tias cov cua kub sib txhuam uas tsim los ntawm kev sib hloov ntau dhau tsis tuaj yeem dissipate sai txaus, nws yuav ua rau qhov kub thiab txias tsis zoo nyob rau hauv qhov tuag.
Pull-tawm ceev: Kev sib raug zoo ntawm rub- tawm ceev thiab extrusion ceev (draw piv) cuam tshuam rau lub siab tiag tiag hauv qhov tuag. Yog tias qhov rub- tawm nrawm nrawm dhau (ua rau qhov sib piv ntau dhau), cov khoom siv ntawm qhov tuag tawm yog kos nyias dhau, ua rau poob siab tuag thiab cuam tshuam rau qhov ntom ntawm cov yeeb nkab.
IV. Cov xwm txheej ntawm Lim Screen thiab Perforated Plate
Filter Screen Clogging: Cov ntxaij lim dej yog siv los lim tawm impurities thiab tsim rov qab siab. Thaum cov impurities lossis gels hauv CPVC formulation sib sau ua ke ntawm cov ntxaij lim dej, lossis thaum xaiv cov ntxaij lim dej uas muaj cov ntxaij lim dej ntau dhau lawm, cov khoom ntws raug cuam tshuam, thiab qhov siab ntawm cov pwm tseem nce ntxiv.
Perforated Phaj Txhawb: Yog tias cov dej ntws hauv cov phaj perforated tau txhaws lossis yog tias lub phaj tsis haum nrog cov pwm, nws cuam tshuam qhov sib xws ntawm cov dej ntws, ua rau tsis sib xws ntawm kev faib tawm.
V. Cov khoom siv xwm txheej
Mould Temperature Control Accuracy: Yog tias cov khoom cua sov tau hnav los yog cov thermocouples malfunction, ua rau qhov kub thiab txias tsis zoo nyob rau hauv ib feem, qhov viscosity ntawm CPVC cov khoom nyob rau hauv qhov chaw yuav nce tam sim ntawd, tsim ib "pob" uas thaiv cov ndlwg channel thiab ua rau lub siab hloov pauv.
Cov pa roj carbon deposits ntawm Pwm Phab Ntsa: Tom qab ib lub sij hawm ntawm CPVC ntau lawm, carbon deposits yuav tsub kom nyob rau hauv lub puab phab ntsa ntawm cov pwm. Cov deposits hloov qhov ntev ntawm cov ntws raws, nce nto roughness, thiab maj mam nce ndlwg tsis kam, uas ua rau ib tug qeeb nce nyob rau hauv pwm lub sij hawm.