Vim lawv zoo heev -kub tsis kam, yoog raws, thiab replicaability, silicone roj hmab pwm yog dav siv nyob rau hauv cov khoom replication thiab me me -batch ntau lawm nyob rau hauv industries xws li handicrafts, kho mob, thiab electronics.
Cov txheej txheem molding feem ntau suav nrog plaub kauj ruam tseem ceeb: sib tov, degassing, vulcanization, thiab tom qab- ua.
Ua ntej, kev sib xyaw yog qhov tseem ceeb. Silicone roj hmab feem ntau yog ua los ntawm kev sib xyaw cov roj hmab hauv paus nrog cov tshuaj tua kab mob hauv ib qho piv txwv, feem ntau 10: 1 lossis 1: 1 los ntawm qhov hnyav. Kev sib tov yuav tsum sib xws kom tsis txhob muaj qhov sib npaug. Qee cov txheej txheem siv ob-chav tsev khoom- kub vulcanizing (RTV) silicone roj hmab, uas kho tsis tau cua sov tom qab sib tov thiab tsim nyog rau molding ceev.
Qhov thib ob, degassing ncaj qha cuam tshuam pwm zoo. Tom qab sib tov, cov roj hmab silicone yuav tsum tau tso cai sawv ntsug lossis nqus kom tshem tawm cov npuas. Txwv tsis pub, lub qhov cua yuav tsim nyob rau hauv pwm tom qab molding, txo replicaability. Lub tshuab nqus tsev degassing feem ntau ua ntawm -0.09 MPa rau 5-10 feeb kom txog thaum tag nrho cov cua npuas raug tshem tawm.
Vulcanization yog cov kauj ruam tseem ceeb. Chav- kub vulcanized silicone roj hmab kho ib txwm muaj tom qab sib tov, feem ntau nyob rau hauv ob peb teev mus rau 24 teev, nyob ntawm qhov kub thiab txias thiab catalyst npaum li cas. Rau kev ua tau zoo, rhuab vulcanization (xws li, ci ntawm 80-150℃rau ob peb feeb) tuaj yeem txo lub sijhawm kho. Thaum lub sij hawm molding, tus thawj pwm (xws li, siv quav ciab los yog resin pwm) yog ruaj rau ib lub phaj tiaj tus, silicone roj hmab yog poured, thiab ib zaj duab xis yog them los tiv thaiv sticking.
Thaum kawg, tshaj tawm - kev ua tiav suav nrog kev txiav thiab ntxiv dag zog. Tom qab demolding, pwm npoo yuav tsum tau trimmed thiab smoothed. Cov txheej txheem nyuaj tuaj yeem rov ua dua -coated nrog silicone roj hmab rau ntxiv zog. Qee qhov xwm txheej, tus neeg sawv cev tso tawm yog txau rau ntawm pwm nto kom txhim kho kev tso tawm.
Silicone roj hmab pwm muab cov txheej txheem molding hloov tau, ntsuas tus nqi thiab qhov tseeb, ua rau lawv tshwj xeeb tshaj yog tsim rau replicating complex curved nto los yog finely textured khoom. Nrog rau kev nce qib hauv cov ntaub ntawv kev tshawb fawb, siab -kev ua tau zoo silicone roj hmab nrog kub tsis kam thiab tsim kua muag kuj yuav nthuav dav nws cov ntawv thov.
