Yam khoom thiab kev ntsuam xyuas ntawm cov txheej txheem gravure faults nyob hauv ntawv
Peb yog ib lub lag luam loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv nyuaj, phau ntawv luam ntawv, phau ntawv nyuaj, phau ntawv luam tawm, phau ntawv luam tawm, phau ntawv luam tawm, lub thawv ntim, daim qhia ntawv, txhua yam ntawm PVC, cov ntawv luam tawm, ntawv sau cia, hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
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Nyob rau hauv cov txheej txheem gravure printing, cov kab txiav tawm yog ib qho kev txhaum. Nws tshwm nyob rau hauv qhov dawb ntawm cov ntawv luam tawm vim hais tias lub cwj mem tsis zawm tus cwj mem rau hauv qhov chaw seem ntawm cov ntawv xov xwm, thiab nws yog qhov yooj yim mus xyuas thiab nrhiav. Qee qhov riam tshwm hauv cov duab nraaj ntawm cov ntawv sau. Qhov teeb meem no tsis tshua muaj vim hais tias cov cwj mem zeeg tawm ntawm tus cwj mem xaj ntawm cov duab hauv cov duab, kom tus lej ntawm qhov chaw muaj tsawg dua lwm cov haujlwm, yog li ntawd tus cwj mem yog faint. Xim number case yog ib nyuag me tshaj li cov duab ntawm sab nrauv (ntxiv mus hais txog kab tsaus). Thaum cov xim loj thaiv cov ntawv loj, cov kab hlais pom ntau dhau lawm, thiab muaj cuab kev ntau dua. Cov kab riam feem ntau yuav muab faib ua ob hom: ib qho yog ib qho uas muaj tas mus li; ib qho yog ib qho kev sib quas sib to taub, cov kab uas tsis sib haum.
Daim ntawv ceeb toom
Hauv cov txheej txheem papermaking, txhawm rau txhim kho lub ntsej muag ntawm daim npog ntawm daim ntawv, nws yog feem ntau tsim nyog ntxiv rau ib tus neeg saib xyuas kev pab xws li ib tus neeg muab khoom xa tuaj. Yog tias cov nyhuv filling ntawm cov neeg ua ntaub ntawv yog cov neeg pluag tsis zoo, tus ciaj ciam nyob hauv av yuav poob thaum daim ntawv tsiv los yog nyuab siab. Qhov thib ob, feem ntau ntawm cov phom ntim siv cov khoom siv fiber ntau dua tshiab, cov fibers yog luv luv thiab nkig, thiab cov txheej txheem papermaking sizing tsis txaus. Thaum luam ntawv, luam ntawv qis thiab viscosity ntawm tus cwj pwm yuav ua rau daim ntawv kom fluff thiab poob tawm. Cov ntaub so ntswg, daim ntaub ntawv, thiab cov hmoov ntawv sib sau mus rau ntawm lub phaj ntawv, thiab tuaj yeem zwm rau hauv tus cwj mem los yog muab xyaw rau hauv tus lej raws li cov ntawv phaj rov qab. Thaum cov tshuaj no sib koom ua ke rau hauv lub hau ntaiv, lub tsheb ciav hlau raug cuam tshuam. Cov nyhuv ntawm tus cwj mem xaj yog ua rau tus cwj mem xaj yuav tsum tau tawm los ua ib txoj kab txiav.
Xws li cov kab txiav feem ntau yog tuab thiab muaj ib txoj hauj lwm uas tsis muaj cai thiab txav mus rau sab nrauv los ntawm qhov kev taw qhia ntawm qhov teeb meem raws li tus kws kho mob txav.
Hauv qhov no, cov khoom muag thiab cov ntaub ntawv, xws li xyoob ntoo, yuav siv tau los ua tib zoo ntsuas cov txheej txheem txawv teb chaws nrog rau riam ntug, thiab riam kab yuav raug tshem tawm yam tsis muaj kev puas tsuaj ntawv. Yog tias riam kab tsis raug tshem tawm, nws tuaj yeem tsum nres. Tom qab so lub riam tais ntxuav, nws yuav pib luam ntawv. Yog hais tias riam kab tseem tshwm feem ntau, koj yuav tsum tau lim tus number case los sis hloov daim ntawv zoo dua.
Ink teeb meem
1. Ntxim tus number case viscosity
Lub khob ntawm tus cwj mem xaj yuav tsum thev luam qhov ua kom tiav. Thaum luam ntawv thaum muaj kev kub ceev, lub khob ntawm tus cwj mem xau yog tswj ntawm 12 thiab 15 feeb (3 # Cahn khob). Rau kev ceev ceev luam ntawv, lub xauv npo ntawm tus cwj pwm xaj yuav tsum tau tswj ntawm 16 mus rau 18 vib nas this (3 #) Nyob ntawm Chaen Cup). Tus cwj mem ntawm tus cwj mem xau yog siab heev, thiab qhov adhesion rau lub plhaub kheej kheej muaj zog, uas yog tsis zoo rau scraping tshaj tus cwj mem ntawm lub phaj los ntawm tus cwj pwm, thiab qhov tshwm sim ntawm stencil sau luam tawm siab. Thaum lub sij hawm luam ntawv, tus lej ntawm tus cwj mem xaj yuav tsum ntsuas thiab tswj tsis tu ncua, feem ntau ntsuas txhua 20-30 feeb.
2. Nyhav ntawm tus cwj pwm qhuav
Tus number case dries dhau heev thiab yog nquag crusting. Yog hais tias lub crust tsis yaj thaum lub npuav kab, nws yuav ua raws li tus ntug ntawm rab riam los yog hauv qab ntawm rab riam thaum nws tuaj nrog tus cwj pwm kom tau tsim ib kab ntawv. Yog tias txoj hlua khi uas siv lub tshuab qhib qhib, khawm crusts thiab agglomeration feem ntau yuav tshwm sim. Yuav kom txo qhov kev cuam tshuam xws li kev txiav tawm kab khiav haujlwm, tus number case nyob rau hauv lub luj tus number case yuav tsum tau ntau zaus; tus nqi qis qis qis yuav tsum muab ntxiv yog tsim nyog; yog tias tsim nyog, ib daim thaiv npog tuaj yeem muab ntxiv rau kom tswj tau thiab txo qhov tsis ua hauj lwm ntawm txoj kab luam.
3. Quav nyiaj txiag
Gravure inks yog tsuas yog tsim ntawm pigments, binders, additives thiab lwm yam. Yog pigment tsis txaus rau hauv pem teb, cov khoom no muaj sib npaug, thiab nws yog ib qho uas tsis tsim nyob rau hauv phau ntawv pov thawj thiab hnyav, thiab nyob ntawm tus kws kho mob lub hnab thaum luam ntawv yuav ua rau raug txiav tsis zoo, tsis raug txiav tawm ntawm cov ntawv luam tawm. Qhov ua kom cov pob pigment muaj qhov ua rau muaj kev cuam tshuam rau feem ntau ntawm cov kab txiav. Piv txwv li, cov xim uas siv xiav xiav siv los ua xiav nyuaj, thiab nws nyuaj rau qhov zoo me me ntxiv txawm tom qab txaus sib tsoo, thiab nws yog ib qho yooj yim los ua kom khaus khaus thaum lub sij hawm luam ntawv. Cov riam lossis cov nyhuv ntawm qhov xauv khawm feem ntau ua rau riam kab tsis ua hauj lwm thaum luam tawm xiav kua.
4. Cov nyhuv ntawm cov lej ua si
Hauv cov txheej txheem ntau lawm, ib qho nyiaj ntawm tus neeg saib xyuas feem ntau yog ntxiv. Cov phom lub tog raj kheej muaj qee yam dej num tom qab chrome plating. Yog tias qhov kev ua si ntawm tus cwj mem thiab cov phom lub plhaub loj dhau lawm, cov khoom siv yuav ua raws nraim rau cov tub-ntxhais thaum lub sij hawm luam ntawv, thiab cov cwj pwm nyuab nyuab nyuab rau nws ua ib rab riam. kab. Lub sijhawm no, lub phom lub plhaub yog xub ntxuav kom tshem tawm cov khoom siv rau saum npoo, thiab ib qho kev ua rau kev ua kom qis ntxiv ntxiv rau tus cwj mem los tua cov kab txiav.
5. Nyhuv ntawm tus cwj mem zoo
Lub sij hawm ntawm lub sij hawm muab ntim cia ntev, qhov hnyav hloov ntawm qhov hloov, ua rau tus number case los yaj, los yog tus number case mismatched thiab siv tsis zoo, ua rau fab tshuaj, uas yuav ua rau tus number case rau precipitate. Thaum lub sij hawm luam ntawv, lub sij hawm ntev hauv cov cwj mem zis muaj nyob rau ntawm tus kws kho hniav ua tus xaj kab, thiab tus cwj mem yuav tsum tau hloov.
Plate yam
1. Qhov cuam tshuam ntawm qhov kev npaj tiav
Gravure luam ntawv plates feem ntau yog tsim los ntawm cov tshuab luam ntawv thiab tshuab phaj. Thaum lub sij hawm fais fab txheej txheem, cov ntug ntawm lub hlwb yuav tsim burrs. Yog hais tias lub burr tsis yog ntxuav thaum lub sij hawm txhuam hniav, thaum lub sij hawm luam ntawv, tus cwj mem ntawm lub npoo ntawm cov kab npoo tsis tau yooj yim scraped, thiab thaum mob hnyav, tus cwj pwm tau raug puas tsuaj, uas yog tsim txoj kab txiav. Rau cov ntawv luam tawm stencils tshwm sim los ntawm qhov ntxhib ntim ntawm cov ntawv luam tawm, cov ntawv xov xwm luam tawm yuav maj mam muab ci ntsa iab nrog 1200 mesh fine sandpaper, tab sis feem ntau zoo tshaj tsis tau txhuam cov ntawv phaj kom tsis txhob raug puas rau hauv cov ntawv phaj.
2. Nyhuv ntawm chromium txheej hardness
Thaum cov phaj ua, yog tias lub chrome plating sijhawm ntev heev, qhov nyuaj ntawm chrome txheej ntawm lub phaj ntawm cov ntawv luam tawm yog siab dhau, thiab nws yooj yim rau kev puas tsuaj rau lub cwj mem, thiab lub stencil yuav raug hloov ntawm cov ntawv luam tawm. Yog hais tias lub chrome plating lub sij hawm luv heev, chrome txheej rau ntawm lub phaj luam ntawv yog mos muag heev, thiab tus cwj pwm uas yuav ua rau lub phaj ntawv puas tsuaj, thiab cov kab txiav sab nraud tshwm tuaj rau ntawm qhov teeb meem luam tawm.
3. Qhov cuam tshuam ntawm qhov tsim teebmeem
Cov chips tau tsim los ntawm txoj kev sib tsoo phaj yuav tsis raug tshem tawm thiab ua raws li cov ntawv xov xwm, uas yuav ua rau cov phaj luam ntawv thiab tus kws kho mob ua rau lub sij hawm luam ntawv, ua kom muaj kev txiav tawm. Ua ntej luam tawm ntawm tus qauv tshiab, nws yog qhov zoo tshaj plaws los ntxuav nws kom haum nrog hnyav tawm cov roj thiab impurities txo qhov tshwm sim ntawm kab kab kev txhaum.
4. Cuam tshuam ntawm kev ua haujlwm
Tsis zoo li lub cav ntim ntawm lub phom khawm kuj tseem ua rau cov kab ntawv txiav tawm kom ua yuam kev, thiab nws tsis yooj yim los xyuas lossis nyuaj xyuas, yog li nws yog ib qho yooj yim uas yuav tsum tsis pom zoo. Hauv cov sijhawm ua haujlwm, nws tuaj yeem tshawb xyuas lub tshuab. Tsis tas li ntawd, qhov tseeb ntawm cov ntawv xov xwm yuav tsum tau tswj xyuas kom tsis txhob muaj kev cuam tshuam ntau heev rau hauv lub cwj mem thaum lub sij hawm siv ceev ceev vim tias qhov kev ua yuam kev tshaj li tus qauv, uas yuav ua rau tsis ua hauj lwm ntawm daim ntawv luam tawm.
lwm yam
1. Cov nyhuv ntawm tus cwj pwm
Lub hardness ntawm squeegee yog qis tshaj qhov hardness ntawm chrome txheej nyob rau saum npoo ntawm lub phaj. Yog tias qhov kev zawm ntawm lub cwjmem loj dhau lawm, nws yuav ua rau kev siv cov phom luam tawm thiab ua rau khawb: yog tias cov cwj pwm tsis zoo, nws yuav hnav ib lub sijhawm luv luv, ua rau kom muaj cov lej ntawm daim ntawv luam tsis yog ntxuav thiab kab stencil tshwm. Nyob rau lub sij hawm no, nws yog ib qhov tsim nyog yuav tau kho tus riam thiab hloov riam.
Thaum cov quav ntaiv cov hlawv puas tsuaj lawm thiab muaj qhov sib txawv, ib txoj kab khiav riam-thiab-sab sab nraud tshwm tuaj, thiab cov riam kab kuj yoojyim pom. Yog tias qhov sib txawv ntawm cov cwj pwm khov me me, nws tuaj yeem ua polished rau hauv thiab du nrog cov roj zeb los sis nplua nuj. Yog tias qhov sib txawv loj loj, yuav tsum tau hloov tshiab dua tshiab. Thaum hloov ib rab riam tshiab, tus cwj mem zauv nyob rau hauv lub siab thiab lub raj yuav tsum muab tshem tawm tag nrho, yog li tsis txhob cuam tshuam qhov kev sib tsoo ntawm lub ciav hlau, thiab qhov ntev ntawm cov cwj pwm cuam tshuam rau qhov siab ntawm qhov siab yuav tsum zoo ib yam, 5 hli. Hauv cov txheej txheem luam ntawv, qee cov neeg xav tau lapped nrog cov phaj ntev ntev kom ua tiav cov nyom zoo. Nyob rau lub sij hawm no, tus ntug ntawm tus cwj pwm yuav tsum tau sib haum nrog cov metallographic sandpaper los ua tus cwj pwm kom ncav mus zoo dua cov cwj mem zom zoo dua thiab ua kom muaj kev ua kom zoo dua.
Secondly, tus flatness ntawm qhov kev ntiag tug installation yuav tseem ua rau kab ntawv. Yog li ntawd, thaum twg txhim kho lub khob ntws, nco ntsoov tias qhov chaw nyob yog zoo thiab tus cwj pwm khov kho yog qhov nyuab siab. Ntxiv rau, lub siab thiab lub kaum ntse ntsej ntawm tus kws kho mob hniav tseem muaj cov nyhuv loj rau ntawm kab ntawv. Thaum lub sij hawm luam tawm, lub kaum sab xis thiab lub siab ntawm tus cwj pwm yuav tsum raug tsim nyog raws li cov xwm txheej ntawm kev teeb tsa thiab qhov teeb meem ntawm cov ntawv luam tawm, thiaj li ua tau zoo zuj zus, uas txo qhov tshwm sim ntawm cov ntawv luam tawm stencil tsis ua haujlwm.
Nws yog ib qho tsim nyog los siv tus kheej khawm squeegee nrog cov khoom siv ceev nruj thiab ntsis nyuaj. Hauv kev khiav lag luam, them nyiaj rau lub kaum ntse ntse thiab qhov siab ntawm lub cwj mem, kom tus cwj mem noom muab ziab kom zoo, thiab siv lub khob ntim rau ntawm daim txiag muag thiab cov cwj pwm ntawm nws tus kheej tau muab coj los ua kom zoo dua, thiab khawm tsheb. Lub neej ncua txog lub sijhawm ntawm cov kab txiav.
2. Qhov ua haujlwm nyhav
Cov khoom siv feem ntau yog siv los kho cov tawv nqaij thiab cov xim ntawm lub cim thaum lub sij hawm luam ntawv. Hauv kev xyaum, lub solubility yuav tsum muaj zog kom ntau li ntau tau. Tus hnyav uas ua kom qhuav sai sai, xws li ethyl acetate, isopropanol, thiab cov zoo li no. Cov phev ntau hom yuav tsum siv ntau hom tshuaj muaj kuab. Yog hais tias qhov hnyav siv tsis zoo, tus number case yog tsis txaus thiab tuav ua ke. Thaum tsim kom tus kws kho mob tuaj, ua tus kab txiav.
Txoj kab txiav no feem ntau yog txoj kab tsaus, qee zaus tsis. Nws yog ntau dua los siv tus cwj mem kub kub los luam tawv xim. Txij thaum kub number case yog npaj los ntawm kev siv kub hmoov, kub roj thiab hnyav, cov hlau hais yog ib qho hnyav thiab yooj yim heev precipitate. Yog hais tias cov hnyav siv yog pluag hauv solubility, ntxiv rau stirring. Txaus, cov hlau yuav tshwm sim vim cov khoom tsis sib npaug. Yog hais tias nws yog khaus ntawm tus kws kho mob hniav ntawm lub ntsej muag, ib txoj kab uas tsaus nti yog tsim. Tus cwj pwm ntawm cov kab no tsaus yog tias nws yuav ploj tom qab lub sijhawm, thiab tom qab ntawd cov ntaub ntawv dua, uas cuam tshuam qhov zoo ntawm cov ntawv luam tawm. Xws li cov kab txiav tawm tsis yooj yim rau kev lag luam, thiab nws yuav tsum pib ntawm lub hauv paus ua kom npaj rau kev ua haujlwm ua ntej luam ntawv. Thaum twg tus number case yog npaj, tus haum hnyav siv, thiab cov dej sib tov yog tag nrho cov qoos rau tag nrho, thiab tus number case yog cia zoo nyob rau hauv kev.