txhaj tshuaj molding cuam tshuam rov qab siab ?

Cov nyhuv ntawm rov qab siab rau txhaj tshuaj molding tseem ceeb heev, thiab nws ncaj qha cuam tshuam rau qhov txhaws ntawm cov yaj thiab qhov zoo ntawm cov khoom yas.

(1) Tsim nyog rov qab siab tuaj yeem txhim kho cov khoom zoo

① Nws tuaj yeem ua kom cov yaj hauv lub thoob, nce qhov ceev, thiab txhim kho qhov txhaj tshuaj ntim, khoom hnyav thiab qhov ntev stability;

② Cov roj hauv cov yaj tuaj yeem ua tau “nyem tawm” txhawm rau txo cov huab cua tawg thiab cov npuas sab hauv ntawm qhov chaw ntawm cov khoom, thiab txhim kho cov uniformity ntawm gloss;

③ Ua kom qeeb qeeb ntawm kev khiav ceev ntawm cov ntsia hlau kom cov yaj hauv lub thoob yas tag nrho, nce lub uniformity ntawm kev sib tov ntawm toner, masterbatch thiab yaj, thiab tsis txhob muaj xim sib xyaw hauv cov khoom;

④ Kev ua kom lub nraub qaum kom zoo tuaj yeem txhim kho qhov shrinkage ntawm cov khoom nto thiab cov kua nplaum khiav ncig cov khoom;

⑤ Nws tuaj yeem ua kom cov av noo ntawm yaj, txhim kho cov plasticization zoo ntawm cov yaj, thiab txhim kho lub fluidity ntawm yaj thaum sau pwm, thiab qhov saum npoo ntawm cov khoom tsis muaj cov kua nplaum txias.

(2) Qhov cuam tshuam ntawm kev rov qab siab dhau ntawm cov khoom

① Lub siab yaj nyob rau pem hauv ntej kawg ntawm lub thoob yog siab dhau lawm, cov khoom kub yog siab, thiab viscosity txo. Qhov rov qab ntws ntawm cov yaj hauv cov ntsia hlau zawj thiab qhov nce hauv cov dej ntws ntawm lub thoob thiab cov ntsia hlau yuav txo cov kev ua haujlwm ntawm plasticization.;

②Rau cov yas uas tsis zoo thermal stability (xws li PVC, POM, lwm yam.) los yog colorants, qhov kub ntawm cov khoom molten nce thiab lub sij hawm cua sov nyob rau hauv lub chim nce, ua rau thermal decomposition, los yog qib ntawm cov xim hloov zuj zus, thiab cov xim saum npoo thiab luster ntawm cov khoom tau zuj zus;

③ Lub nraub qaum siab dhau lawm, tus ntsia hlau retreats maj mam, thiab lub sij hawm rov qab ua ntej yas yog ntev, uas yuav ua rau kom lub voj voog lub sij hawm thiab txo cov kev tsim khoom;

④ Lub nraub qaum siab yog siab thiab lub siab yaj yog siab. Tom qab cov kua nplaum yog txhaj, lub nozzle yog nquag yaj drooling. Thaum cov kua nplaum yog txhaj rau lwm zaus, cov khoom txias nyob rau hauv lub nozzle khiav yuav thaiv lub nozzle los yog cov khoom txias me ntsis yuav tshwm sim nyob rau hauv cov khoom;

⑤ Thaum lub sij hawm txhaj tshuaj molding tshuab txheej txheem ua haujlwm, lub nozzle leaks vim lub siab rov qab ntau dhau, uas nkim raw cov ntaub ntawv thiab ua rau lub nplhaib cua sov nyob ze ntawm lub nozzle kom hlawv tawm;

⑥ Cov neeg kho tshuab hnav ntawm lub tshuab ua ntej yas thiab cov ntsia hlau chim yog nce.

(3) Qhov cuam tshuam ntawm qis rov qab siab ntawm cov khoom

① Thaum lub nraub qaum qis dhau, tus ntsia hlau retreat sai heev, qhov ntom ntawm cov yaj ntws mus rau hauv pem hauv ntej kawg ntawm lub kiv cua thoob yog me me (kuj xoob), thiab muaj cua ntau dua;

② Nws yuav ua rau cov yas tsis zoo, tsis ruaj khov ntim ntim, thiab kev hloov loj ntawm cov khoom hnyav thiab cov khoom loj;

③Qhov saum npoo ntawm cov khoom yuav tshwm sim shrinkage, cua tawg, cov kab mob khaub thuas, tsis sib xws gloss thiab lwm yam tsis zoo phenomena;

④ Cov npuas yooj yim tshwm hauv cov khoom, thiab lub periphery thiab cov pob txha ntawm cov khoom yog yooj yim txav thiab tsis txaus siab rau cov kua nplaum.

(4) Txoj kev taw qhia rau kev teeb tsa rov qab

Cov rov qab siab ntawm kev txhaj tshuaj molding yuav tsum tau kho raws li cov khoom ntawm cov khoom siv raw, qhuav tej yam kev mob, cov qauv khoom thiab cov xwm txheej zoo. Lub siab rov qab feem ntau yog kho ntawm 3-15kg / cm3. Thaum cov khoom nto muaj me ntsis cua tawg, xim sib tov, shrinkage thiab kev hloov loj ntawm cov khoom loj thiab qhov hnyav, rov qab siab tuaj yeem tsim nyog nce. Thaum lub nozzle ntws, salivates, melts overheated thiab decomposes, cov khoom discolors, thiab cov khoom xa rov qab qeeb dhau, koj tuaj yeem txiav txim siab kom tsim nyog txo lub nraub qaum.