Lub manifestation thiab cuam tshuam ntawm ntug shrinkage
Cov ntug shrinkage feem ntau manifests raws li tsis tiav los yog pom tseeb shrinkage ntawm ntug ib feem ntawm cov khoom, ua rau cov npoo ploj los yog cov duab tsis zoo ntawm cov khoom tiav. Nws qhov kev cuam tshuam tuaj yeem muab faib ua cov hauv qab no:
1. Txo qhov zoo ntawm qhov zoo
Cov khoom siv roj hmab nrog cov npoo tsis tiav zoo li ntxhib thiab tsis sib xws, uas cuam tshuam ncaj qha rau qhov pom ntawm cov khoom. Hauv kev lag luam uas xav tau cov qauv zoo nkauj (xws li cov khoom siv tsheb, cov khoom siv hauv tsev, thiab lwm yam), xws li qhov tsis xws yuav ua rau cov khoom tsis zoo.
2. Teeb meem nrog qhov tseeb qhov tseeb
Ntug shrinkage feem ntau ua rau cov khoom tiav loj tsis tau raws li cov qauv tsim, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas xav tau qhov ntev. Xws li qhov tsis xws luag yuav ua rau cov khoom tsis tuaj yeem sib sau los yog foob.
3. Kev ua haujlwm tsis zoo
Rau cov khoom siv roj hmab zoo xws li cov ntsaws ruaj ruaj thiab kev poob siab absorbers, ntug shrinkage yuav ncaj qha rhuav tshem lawv cov dej num. Piv txwv li, qhov tsis xws luag ntawm ntug ntawm lub foob yuav ua rau huab cua los yog kua xau, thaum qhov loj tsis txaus ntawm lub shock absorber yuav tsis muaj peev xwm ua tau zoo cushion.
4. Kev poob nyiaj ntau ntxiv
Cov khoom shrinkage txhais tau hais tias qhov loj ntawm cov khoom seem, nce cov khoom siv raw thiab cov nqi tsim khoom.
Cov laj thawj tseem ceeb ntawm ntug shrinkage
1. Kub vulcanization kub heev
Qhov kub ntawm vulcanization ntau dhau yuav ua rau kom muaj kev sib txuas ntawm cov tshuaj tiv thaiv ntawm cov roj hmab, ua rau nws nyuaj ua ntej cov kab noj hniav puv tag, ua rau qhov tsis ua hauj lwm ntawm cov khoom ntug yuav tsum nyob rau hauv qhov chaw. Tshwj xeeb tshaj yog thaum cov kab noj hniav yog complex los yog ntug yog nyias, qhov kub thiab txias yuav ua rau cov teeb meem shrinkage aggravate.
2. Roj hmab ntau dhau
Cov roj hmab ntau dhau yuav tsis tsuas yog nce cov dej ntws tawm xwb, tab sis kuj ua rau tsis sib xws ntawm cov khoom siv hauv cov kab noj hniav, thiab shrinkage ntawm ntug vim cov khoom siv tsis txaus. Tsis tas li ntawd, cov roj hmab ntau dhau yuav ua rau kom lub siab nyob ntawm ntug ntawm cov kab noj hniav, ua rau qee cov khoom yuav tsum tau nyem tawm ntawm kab noj hniav.
3. Ceev heev vulcanization ceev
Lub vulcanization ceev ncaj qha cuam tshuam rau lub sijhawm sau ntawm cov khoom. Yog hais tias lub vulcanization ceev ceev heev, cov roj hmab yuav pib solidify ua ntej cov kab noj hniav yuav puv, uas ua rau shrinkage nyob rau hauv unfilled ntug cheeb tsam.
4. Pwm tsim tsis xws luag
Pwm tsim yam tsis muaj grooves dhau lawm yuav cuam tshuam cov khoom tawm ntawm cov khoom siv ntau dhau, ua rau tsis sib xws ntawm cov roj hmab hauv cov pwm kab noj hniav. Tsis tas li ntawd, qhov ntxhib thiab tsis sib npaug ntawm cov pwm kab noj hniav, lossis tsis txaus pwm sealing, kuj yuav ua rau muaj teeb meem ntawm ntug shrinkage.
5. Pwm tso tawm teeb meem
Thaum lub sij hawm molding txheej txheem, yog hais tias huab cua nyob rau hauv lub pwm kab noj hniav tsis tuaj yeem tawm hauv lub sij hawm, qhov ntws ntawm cov roj hmab ntawm ntug yuav raug cuam tshuam, uas ua rau ntug shrinkage. Qhov teeb meem no tshwj xeeb tshaj yog thaum cov roj hmab fluidity tsis zoo.
6. Kev tswj tsis raug ntawm cov txheej txheem tsis raug
Tsis txaus siab, lub sij hawm luv luv vulcanization, los yog pwm pwm tswj qhov kub tsis zoo yuav ua rau tsis txaus fluidity thiab sau lub peev xwm ntawm cov roj hmab hauv cov pwm kab noj hniav, ua rau muaj qhov tsis xws luag ntawm ntug qhov.
Cov txheej txheem los daws qhov tshwm sim ntawm ntug shrinkage
Rau ntau qhov laj thawj ntawm ntug shrinkage, cov kev daws teeb meem hauv qab no tuaj yeem ua:
1. Optimize lub vulcanization kub
Tsim nyog txo qhov kub ntawm vulcanization kom tso cai rau cov roj hmab kom muaj sij hawm txaus nyob rau hauv pwm kab noj hniav kom paub meej tias cov ntug ib feem tuaj yeem ua tiav. Piv txwv li, kho qhov kub ntawm vulcanization mus rau qhov tsim nyog ntau yam (xws li 160 degree -180 degree ) los ntawm kev sim tuaj yeem txhim kho cov nyhuv filling ntawm cov khoom.
2. Tswj tus nqi ntawm cov roj hmab
Tswj tus nqi ntawm cov roj hmab los ntawm qhov hnyav hnyav kom ntseeg tau tias nws tuaj yeem sau cov pwm kab noj hniav yam tsis muaj qhov ntau dhau. Hauv kev tsim khoom tiag tiag, tsis siv neeg qhov hnyav tuaj yeem siv los txhim kho qhov tseeb ntawm cov roj hmab.
3. Kho cov vulcanization ceev
Hloov kho qhov piv ntawm vulcanizer hauv cov roj hmab cov mis nyuj thiab txo cov vulcanization ceev kom ntev lub sij hawm ntws ntawm cov roj hmab. Qhov no tuaj yeem ua tiav los ntawm kev txo tus nqi ntawm cov accelerator lossis xaiv lub tshuab vulcanizer qeeb.
4. Ntxiv grooves overflow thiab venting grooves
Ntxiv cov grooves txaus thiab venting grooves nyob rau hauv cov pwm tsim kom tso cai rau cov roj hmab ntau tshaj kom tawm tau zoo thaum kom ntseeg tau tias huab cua hauv pwm kab noj hniav tuaj yeem tawm hauv lub sijhawm. Tshwj xeeb tshaj yog rau cov khoom uas muaj cov npoo nyuaj, tsim nyog tsim ntawm venting grooves tuaj yeem txo qis ntug shrinkage.
5. Txhim kho pwm txij nkawm thiab ua kom zoo dua qub
Tsis tu ncua xyuas lub sealing thiab ntug flatness ntawm pwm, thiab kho los yog hloov pwm nyob rau hauv lub sij hawm yog tias pom muaj teeb meem. Tsis tas li ntawd, nyob rau hauv lub pwm tsim theem, kev siv cov zauv simulation tshuab los optimize pwm kab noj hniav tsim kuj yuav zam tau qhov shrinkage teeb meem ua ntej.
6. Kho cov txheej txheem tsis
Raws li cov kev xav tau tiag tiag, txhim kho cov txheej txheem tsis zoo, xws li tsim nyog nce lub siab molding, ncua lub sijhawm vulcanization, lossis txo cov pwm kub. Cov kev hloov kho no tuaj yeem txhim kho qhov fluidity ntawm cov khoom nyob rau hauv pwm kab noj hniav thiab xyuas kom meej tias cov ntug ib feem puv.
7. Txhim kho cov qauv roj hmab
Los ntawm kev kho cov mis, qhov fluidity ntawm cov roj hmab yog txhim kho. Piv txwv li, nce lub plasticizer los yog txo cov ntsiab lus muab tub lim tuaj yeem txhim kho qhov muaj peev xwm txaus ntawm cov khoom hauv pwm kab noj hniav. Tsis tas li ntawd, ncua sij hawm scorch kuj tuaj yeem tiv thaiv cov roj hmab los ntawm kev ua kom tiav ntxov ua ntej ua tiav.
8. Txhim kho kev tswj hwm kev tsim khoom thiab kev cob qhia cov neeg ua haujlwm
Tsim cov txheej txheem nruj thiab kev ua haujlwm tshwj xeeb, ntxiv dag zog rau kev tswj hwm kev tsim khoom, thiab xyuas kom meej tias cov txheej txheem ntawm txhua qhov txuas ua tau raws li qhov yuav tsum tau ua. Nyob rau tib lub sijhawm, cob qhia cov neeg ua haujlwm tsim khoom kom lawv paub txog cov cuab yeej commissioning thiab cov txheej txheem daws teeb meem.
Cov lus xaus
Ntug shrinkage yog ib qho teeb meem tshwm sim hauv kev tsim khoomcov khoom siv roj hmab molded. Nws ua rau muaj kev nyuaj thiab koom nrog ntau yam xws li vulcanization kub, roj hmab ntau npaum, pwm tsim, thiab cov txheej txheem tsis. Txhawm rau daws qhov teeb meem ntawm ntug shrinkage, nws yog ib qho tsim nyog yuav tau pib los ntawm ntau qhov sib txuas, suav nrog kev ua kom zoo ntawm cov txheej txheem vulcanization, txhim kho cov qauv roj hmab, tsim qauv pwm, thiab kho cov txheej txheem tsis. Los ntawm kev tsom xam thiab kev txhim kho tas mus li, cov ntug shrinkage tshwm sim tuaj yeem txo qis thiab cov khoom lag luam zoo thiab kev tsim khoom tuaj yeem txhim kho.