Kev tsim
Cov roj hmab roller molding feem ntau yog siv los nplaum cov roj hmab rau ntawm cov hlau, suav nrog txoj kev qhwv, txoj kev extrusion, txoj kev molding, txoj kev txhaj tshuaj siab thiab txoj kev txhaj tshuaj. Tam sim no, cov khoom tseem ceeb hauv tsev yog kev siv tshuab lossis kev siv tes ua, thiab feem ntau cov teb chaws txawv teb chaws tau ua tiav kev siv tshuab tsis siv neeg. Cov roj hmab rollers loj thiab nruab nrab feem ntau yog tsim los ntawm kev ua kom pom tseeb, kev sib txuas ntxiv molding los ntawm zaj duab xis extruded lossis kev sib txuas ntxiv winding molding los ntawm daim kab xev extruding. Tib lub sijhawm, hauv cov txheej txheem molding, cov lus qhia, qhov loj me thiab cov duab zoo li cas raug tswj hwm los ntawm lub khoos phis tawj me me, thiab qee qhov kuj tuaj yeem ua pwm los ntawm txoj kev extruder sab xis thiab txoj kev extrusion tshwj xeeb.
Txoj kev molding saum toj no tsis yog tsuas yog txo qhov siv zog ua haujlwm xwb, tab sis kuj tshem tawm cov npuas uas ua tau. Yuav kom tiv thaiv tau lub log roj hmab kom tsis txhob deform thaum lub sijhawm vulcanization thiab tiv thaiv kom tsis txhob muaj cov npuas thiab cov phuam qhwv caj dab, tshwj xeeb tshaj yog rau lub log roj hmab molded los ntawm txoj kev qhwv, yuav tsum siv txoj kev pressurization yooj ywm sab nraud. Feem ntau, qhov chaw sab nraud ntawm lub log roj hmab yog qhwv thiab qhwv nrog ntau txheej ntawm daim ntaub paj rwb lossis daim ntaub nylon, thiab tom qab ntawd kho thiab pressurized nrog hlau hlau lossis fiber hlua. Txawm hais tias cov txheej txheem no twb tau siv tshuab lawm, cov khaub ncaws yuav tsum tau tshem tawm tom qab vulcanization los tsim cov txheej txheem "cecal", uas ua rau cov txheej txheem tsim khoom nyuaj. Ntxiv mus, kev siv daim ntaub hnav khaub ncaws thiab cov hlua khi yog qhov txwv heev thiab kev siv ntau heev. pov tseg.
Rau cov menyuam roj hmab me me thiab me me, ntau yam txheej txheem tsim khoom siv tau, xws li kev kho tes, kev rho tawm zes, kev txhaj tshuaj siab, kev txhaj tshuaj thiab kev nchuav. Txhawm rau txhim kho kev ua haujlwm ntau lawm, feem ntau ntawm cov txheej txheem molding tam sim no siv, thiab qhov tseeb yog siab dua li ntawm txoj kev tsis molding. Kev txhaj tshuaj siab, kev txhaj tshuaj roj hmab khov kho thiab kev nchuav roj hmab kua tau dhau los ua cov txheej txheem tsim khoom tseem ceeb tshaj plaws.
Kev Siv Vulcanization
Tam sim no, txoj kev vulcanization ntawm cov roj hmab loj thiab nruab nrab tseem yog lub tank vulcanization vulcanization. Txawm hais tias hom kev hloov pauv tau hloov pauv, nws tseem tsis tawg ntawm lub nra hnyav ntawm kev thauj mus los, kev nqa thiab kev tshem tawm. Lub qhov cua sov vulcanization muaj peb txoj kev cua sov: chav, cua kub thiab dej kub, thiab lub ntsiab lus tseem yog chav. Cov roj hmab rollers nrog cov kev xav tau tshwj xeeb vim yog kev sib cuag ntawm cov hlau tseem ceeb nrog cov dej pa txais yuav chav vulcanization tsis ncaj qha, thiab lub sijhawm yuav ntev li 1 txog 2 zaug. Nws feem ntau yog siv rau cov roj hmab rollers nrog cov hlau hollow cores. Rau cov roj hmab rollers tshwj xeeb uas tsis tuaj yeem vulcanized nrog lub tank vulcanizing, dej kub qee zaum siv rau vulcanization, tab sis kev kho mob ntawm cov dej qias neeg yuav tsum tau daws.
Yuav kom tiv thaiv cov roj hmab thiab cov hlau tseem ceeb kom tsis txhob raug rhuav tshem vim qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov cua sov ntawm cov roj hmab thiab cov roj hmab tseem ceeb, qhov vulcanization feem ntau siv txoj kev ua kom sov qeeb thiab nce siab, thiab lub sijhawm vulcanization ntev dua li lub sijhawm vulcanization uas cov roj hmab nws tus kheej xav tau. . Yuav kom ua tiav qhov sib npaug ntawm vulcanization sab hauv thiab sab nraud, thiab ua kom cov cua sov ntawm cov hlau tseem ceeb thiab roj hmab zoo sib xws, cov roj hmab loj tseem nyob hauv lub tank rau 24 txog 48 teev, uas yog li 30 txog 50 npaug ntawm lub sijhawm vulcanization roj hmab ib txwm muaj.
Cov menyuam roj hmab me me thiab me me tam sim no feem ntau hloov mus rau phaj vulcanizing nias molding vulcanization, hloov pauv tag nrho cov txheej txheem vulcanization ib txwm muaj ntawm cov menyuam roj hmab. Nyob rau hauv xyoo tas los no, cov tshuab txhaj tshuaj molding tau siv los teeb tsa pwm thiab nqus tsev vulcanization, thiab cov pwm tuaj yeem qhib thiab kaw tau. Qib ntawm kev siv tshuab thiab kev ua haujlwm tsis siv neeg tau zoo dua, thiab lub sijhawm vulcanization luv luv, kev ua haujlwm zoo dua, thiab cov khoom zoo. Tshwj xeeb tshaj yog thaum siv lub tshuab txhaj tshuaj molding roj hmab vulcanizing, ob txoj kev molding thiab vulcanization tau muab tso ua ke rau hauv ib qho, thiab lub sijhawm tuaj yeem luv dua li 2 txog 4 feeb, uas tau dhau los ua ib qho kev taw qhia tseem ceeb rau kev txhim kho kev tsim cov menyuam roj hmab.
Tam sim no, cov roj hmab ua kua uas sawv cev los ntawm polyurethane elastomer (PUR) tau tsim kho sai hauv kev tsim cov roj hmab rollers, thiab tau qhib txoj hauv kev tshiab ntawm cov khoom siv thiab cov txheej txheem hloov pauv rau nws. Nws siv cov qauv nchuav kom tshem tawm cov haujlwm molding nyuaj thiab cov khoom siv vulcanization loj, ua rau cov txheej txheem tsim cov roj hmab rollers yooj yim heev. Txawm li cas los xij, qhov teeb meem loj tshaj plaws yog tias yuav tsum siv cov pwm. Rau cov roj hmab rollers loj, tshwj xeeb tshaj yog rau cov khoom lag luam ib leeg, tus nqi tsim khoom nce siab heev, uas ua rau muaj teeb meem loj rau kev txhawb nqa thiab siv.
Yuav kom daws tau qhov teeb meem no, cov txheej txheem tshiab ntawm PUR roj hmab roller tsis muaj pwm tsim tau tshwm sim hauv xyoo tas los no. Nws siv polyoxypropylene ether polyol (TDIOL), polytetrahydrofuran ether polyol (PIMG) thiab diphenylmethane diisocyanate (MDl) ua cov khoom siv raw. Nws teb sai tom qab sib tov thiab do, thiab raug nchuav rau ntawm lub plawv hlau roj hmab roller qeeb qeeb. , Nws tau ua tiav ib kauj ruam zuj zus thaum nchuav thiab kho, thiab thaum kawg cov roj hmab roller tau tsim. Cov txheej txheem no tsis yog tsuas yog luv luv hauv cov txheej txheem, muaj kev siv tshuab thiab kev ua haujlwm tsis siv neeg, tab sis kuj tshem tawm qhov xav tau cov pwm loj. Nws tuaj yeem tsim cov roj hmab rollers ntawm ntau yam kev qhia thiab qhov ntau thiab tsawg ntawm qhov xav tau, uas txo qis tus nqi. Nws tau dhau los ua qhov kev coj ua tseem ceeb ntawm PUR roj hmab rollers.
Tsis tas li ntawd xwb, cov roj hmab me me uas siv rau hauv kev tsim cov khoom siv hauv chaw ua haujlwm nrog cov roj hmab silicone kuj tseem tab tom tsim kho sai sai thoob plaws ntiaj teb. Lawv muab faib ua ob pawg: kev kho cua sov (LTV) thiab kev kho kub hauv chav (RTV). Cov khoom siv siv kuj txawv ntawm PUR saum toj no, tsim lwm hom ntawv casting. Ntawm no, qhov teeb meem tseem ceeb tshaj plaws yog yuav ua li cas tswj thiab txo qhov viscosity ntawm cov roj hmab kom nws tuaj yeem tswj tau qee qhov siab thiab qhov ceev extrusion.
Lub sijhawm tshaj tawm: Lub Xya Hli-07-2021
