1. Kev pleev xim
-Definition: Painting yog ib lo lus dav dav rau kev ua hauj lwm los ua ib zaj duab xis txheej siv cov xim rau lub hom phiaj ntawm npog qhov chaw ntawm ib yam khoom rau kev tiv thaiv thiab zoo nkauj, thiab lwm yam.
-Lub hom phiaj: Lub hom phiaj ntawm kev pleev xim tsis yog rau kev zoo nkauj xwb, tab sis kuj yog kev tiv thaiv thiab, yog li, kev txhim kho cov khoom zoo.
1) Kev Tiv Thaiv: Feem ntau ntawm cov ntaub ntawv tseem ceeb uas tsim lub tsheb yog cov hlau phaj, thiab thaum lub tsheb tau ua nrog steel phaj ua lub npog, nws ua rau cov dej noo los yog oxygen hauv huab cua los ua xeb.Lub hom phiaj loj tshaj plaws ntawm kev pleev xim yog los tiv thaiv cov khoom los ntawm kev tiv thaiv xws li xeb (xeb).
2) Zoo nkauj: Cov duab ntawm lub tsheb muaj ob peb hom ntawm qhov chaw thiab kab xws li qhov chaw peb sab, qhov chaw tiaj tus, qhov chaw nkhaus, cov kab ncaj nraim, thiab nkhaus.Los ntawm kev pleev xim rau cov khoom zoo li no, nws pom tau tias muaj kev nkag siab ntawm cov xim uas phim cov duab ntawm lub tsheb thiab txhim kho qhov zoo nkauj ntawm lub tsheb tib lub sijhawm.
3) Kev txhim kho ntawm kev ua lag luam: Tam sim no, muaj ntau hom tsheb nyob rau hauv kev ua lag luam, tab sis ntawm lawv, thaum sib piv cov tsheb nrog ib qho kev sib koom ua ke thiab kev ua haujlwm zoo ib yam, piv txwv li, ib qho nrog ob-tone xim zoo dua.tus nqi nce raws li qhov no, nws kuj yog ib qho ntawm cov hom phiaj los sim txhim kho tus nqi ntawm cov khoom los ntawm kev pleev xim.Tsis tas li ntawd, lub durability ntawm sab nrauv ntawm lub tsheb yog yuav tsum tau vim tsis ntev los no ceev ceev ib puag ncig hloov.Piv txwv li, qhov kev thov rau cov xim pleev xim uas tiv thaiv kev puas tsuaj rau cov txheej txheej zaj duab xis tshwm sim los ntawm cov kua qaub los nag thiab kev ua kom tsis zoo ntawm qhov pib glossiness tshwm sim los ntawm kev siv lub tsheb tsis siv neeg ntxuav txhuam yog nce, yog li txhim kho kev lag luam.Tsis siv neeg pleev xim thiab phau ntawv pleev xim yog ob qho tib si siv nyob ntawm cov txheej txheem zoo.
2. Cov xim pleev xim: Cov xim ntawm cov xim Cov xim yog cov kua nplaum uas muaj peb yam ntawm cov xim, resin, thiab hnyav sib xyaw ua ke (dispersed).
- Pigment: Cov hmoov xim uas tsis yaj hauv cov kuab tshuaj lossis dej.Qhov sib txawv ntawm dyes yog tias lawv tau tawg ua cov khoom tsis muaj soluble hauv dej lossis cov kuab tshuaj.Qhov loj me me ntawm ntau qhov micrometers mus rau ntau kaum micrometers.Tsis tas li ntawd, muaj ntau yam duab, xws li lub voj voog, ib daim ntawv lo, ib rab koob, thiab cov duab flaky.Nws yog cov hmoov (hmoov) uas muab cov xim (xim xim) thiab zais lub zog (lub peev xwm los npog thiab zais qhov saum npoo ntawm ib qho khoom los ntawm kev ua opaque) rau cov zaj duab xis txheej, thiab muaj ob hom: inorganic thiab organic.Pigment), polishing, thiab extender pigments yog siv los txhim kho txoj kev xav ntawm av.Cov xim tsis muaj xim thiab pob tshab hu ua ntshiab ntawm cov xim, thaum cov xim tsis suav nrog cov khoom tsim los ntawm cov xim,
Nws yog siv los muab cov zaj duab xis txheej ntau luster.
1) Muaj nuj nqi ntawm pigment
* Xim pigments: imparting xim, zais lub zog
mus.Inorganic pigments: Cov no yog cov xim ntuj xim xws li dawb, daj, thiab xim av liab.Lawv yog cov hlau sib txuas xws li zinc, titanium, hlau lead, tooj liab, thiab lwm yam. Feem ntau, lawv muaj cov huab cua zoo heev thiab kub tsis kam tiv thaiv, tab sis hais txog xim vividness, lawv tsis zoo li cov organic pigments.Raws li cov xim pleev xim rau lub tsheb, cov xim tsis muaj xim ib leeg tsis siv.Tsis tas li ntawd, los ntawm kev pom ntawm kev tiv thaiv ib puag ncig muaj kuab paug, cov xim uas muaj cov hlau hnyav xws li cadmium thiab chromium tsis siv tam sim no.
koj.Organic pigment: Nws yog tsim los ntawm cov organic synthesis los ntawm cov tshuaj tiv thaiv ib ntus, thiab nws yog ib yam khoom ua los ntawm cov hlau sib txuas lossis raws li nws nyob hauv qhov xwm txheej.Feem ntau, cov cuab yeej zais tsis zoo heev, tab sis txij li cov xim ntshiab tau txais, nws yog dav siv rau kev pleev xim rau cov xim zoo nkauj, xim hlau xim, thiab mica xim raws li xim pleev xim rau sab nrauv ntawm lub tsheb.
* Anti-xeb xim: tiv thaiv xeb
* Extender Pigment: Ib qho tawv txheej zaj duab xis tuaj yeem tau txais, tiv thaiv decomposition ntawm txheej zaj duab xis thiab txhim kho durability.
- Resin: Cov kua pob tshab uas txuas cov xim thiab cov xim thiab muab gloss, hardness, thiab adhesion rau txheej zaj duab xis.Lwm lub npe hu ua binder.Qhuav khoom thiab durability ntawm txheej zaj duab xis zoo heev nyob ntawm seb cov khoom ntawm cov resin.
1) Ntuj cob: Nws yog tsuas yog muab rho tawm los yog secreted los ntawm cov nroj tsuag thiab yog siv rau cov xim xws li roj-raws li kua roj vanish, kua roj vanish, thiab lacquer.
2) Synthetic resin: Nws yog ib lo lus generic rau cov synthesized los ntawm cov tshuaj tiv thaiv los ntawm ntau yam tshuaj raw khoom.Nws yog ib qho organic compound nrog qhov hnyav molecular loj heev piv rau ntuj resins.Tsis tas li ntawd, cov khoom siv hluavtaws tau muab faib ua cov thermoplastic resins (softens thiab melts thaum rhuab) thiab thermosetting resins (hardens los ntawm cov tshuaj tiv thaiv los ntawm kev siv cua sov, thiab tsis soften thiab yaj txawm tias thaum sov dua tom qab txias).
- Cov kuab tshuaj: Nws yog cov kua pob tshab uas yaj cov resin kom cov xim thiab cov resin sib xyaw yooj yim.Tom qab tha xim, nws evaporates zoo li ib tug nyias thiab tsis nyob twj ywm nyob rau hauv lub txheej zaj duab xis.
Cua painting
1. Txheej txheem cej luam thiab txhais cov xim: Los ntawm qhov kev xav ntawm imparting 'kev tiv thaiv xeb (tiv thaiv xeb)' thiab 'cov khoom zoo nkauj', automotive paints tau ua lub luag haujlwm hauv kev txhim kho kev lag luam ntawm tsheb los ntawm kev siv cov thev naus laus zis tshiab ntawm lub sijhawm.Hauv cov khoom zoo hauv qab no, cov xim pleev xim thiab txheej txheej yog tsim los ua kom tiav cov txheej txheem zoo tshaj plaws ntawm kev lag luam.
Cov xim feem ntau ntws tau thiab muaj cov cuab yeej ntawm kev coated rau saum npoo ntawm cov khoom yuav tsum tau coated thiab tsim ib zaj duab xis tas mus li (txheej zaj duab xis) los ntawm kev ziab thiab kho cov txheej txheem.Raws li lub cev thiab tshuaj lom neeg cov khoom ntawm txheej zaj duab xis tsim nyob rau hauv no txoj kev, 'xeb tiv thaiv' thiab 'plasty' yog imparted rau cov khoom yuav tsum tau coated.
2. Automotive painting txheej txheem: Txhawm rau kom tau txais lub hom phiaj tsheb zoo hauv kev lag luam zoo tshaj plaws, thiab cov txheej txheem txheej txheem tseem ceeb yog muab rau txheej duab zaj duab xis tau txais hauv txhua tus txheej txheem.Tsis tas li ntawd, txij li cov yam ntxwv ntawm cov txheej txheem ntawm cov yeeb yaj kiab yog nyob ntawm qhov zoo thiab qhov tsis zoo ntawm cov txheej txheem ua haujlwm, cov xim siv rau hauv txhua txoj haujlwm yog tsim los kom lub luag haujlwm tseem ceeb tuaj yeem ua tiav hauv kev xav txog cov txheej txheem txheej txheem.Daim ntawv thov yog nruj me ntsis tswj nyob rau hauv lub khw xim.
Cov txheej txheem saum toj no yog 3-coat lossis 4-coat txheej txheej feem ntau ua haujlwm rau cov txheej txheem ntawm lub tsheb sab nrauv, thiab cov txheej txheem txheej txheem tsim los ntawm txhua tus txheej txheem nthuav tawm cov haujlwm uas yuav tsum tau piav qhia tom qab thiab tsim cov txheej txheem zoo ntawm cov tsheb ua tiav. txheej txheej.Nyob rau hauv cov tsheb thauj khoom thiab lub teeb tsheb, muaj cov xwm txheej uas muaj ob txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej yog ua haujlwm.Tsis tas li ntawd, nyob rau hauv high-end tsheb, nws muaj peev xwm ua tau zoo dua los ntawm kev siv lub tsho nruab nrab lossis sab saum toj ob zaug.
Tsis tas li ntawd, tsis ntev los no, ib txheej txheem los txo cov nqi txheej los ntawm kev sib xyaw cov txheej txheem nruab nrab thiab sab saum toj txheej tau kawm thiab siv.
- Cov txheej txheem kho deg: Nws txhim kho kev tiv thaiv xeb los ntawm kev tiv thaiv corrosion ntawm cov hlau thiab ntxiv dag zog rau qhov adhesion ntawm undercoat (electrodeposition zaj duab xis) thiab cov khoom siv (substrate).Tam sim no, zinc phosphate yog cov khoom tseem ceeb ntawm cov yeeb yaj kiab, thiab txoj kev kho dipping yog qhov tseem ceeb kom nws tuaj yeem kho qhov chaw nrog cov txheej txheem nyuaj.Tshwj xeeb, rau cationic electrodeposition, hlau xws li Fe, Ni, thiab Mn lwm yam uas tsis yog Zn yog muab sib xyaw rau hauv txheej los txhim kho corrosion kuj.
- Electrodeposition txheej (Cathion hom electrodeposition primer): Undercoating feem ntau qhia txog kev tiv thaiv xeb.Ntxiv rau qhov zoo tshaj plaws los tiv thaiv xeb, cationic electrodeposition xim raws li epoxy resin muaj qhov zoo hauv qab no hauv tsheb undercoating.① Tsis muaj elution ntawm zinc phosphate kho zaj duab xis thaum lub sij hawm electrodeposition txheej.② Inhibitory nyhuv ntawm cov tshuaj tiv thaiv corrosion vim yog qhov tseem ceeb hauv cov qauv cob ③ Cov cuab yeej tiv thaiv xeb zoo heev vim muaj kev tswj xyuas adhesion vim siab alkali tsis kam ntawm epoxy resin.
1) Qhov zoo ntawm cationic electrodeposition
* Txawm tias cov duab nyuaj tuaj yeem coated nrog cov yeeb yaj kiab tsis sib xws
* Zoo heev sab hauv nkag mus rau hauv complex qhov chaw thiab pob qij txha.
* Tsis siv neeg painting
* Kev saib xyuas yooj yim thiab tswj cov kab.
* Kev pleev xim zoo ua haujlwm.
* UF kaw-voj dej ntxhua khaub ncaws tuaj yeem siv tau (tsawg dua cov xim thiab cov dej paug tsawg dua)
* Tsawg cov ntsiab lus hnyav thiab cov pa phem tsawg.
* Nws yog xim pleev xim rau hauv dej, thiab tsis tshua muaj kev pheej hmoo ntawm hluav taws.
2) Cationic electrodeposition xim: Feem ntau, nws yog polyamino resin tau los ntawm kev ntxiv thawj rau quaternary amines rau epoxy resin.Nws yog neutralized nrog acid (acetic acid) ua rau nws dej-soluble.Tsis tas li ntawd, txoj kev kho ntawm cov zaj duab xis txheej yog urethane crosslinking cov tshuaj tiv thaiv hom siv Blocked Isocyanate ua tus neeg sawv cev kho.
3) Txhim kho kev ua haujlwm ntawm cov xim electrodeposition: Nws tau nthuav dav thoob plaws ntiaj teb raws li lub tsheb hauv qab, tab sis kev tshawb fawb thiab kev tsim kho txuas ntxiv txhim kho tsis yog tsuas yog kev tiv thaiv zoo ntawm tag nrho lub tsheb tab sis kuj yog qhov zoo ntawm plastering.
* Kev tiv thaiv xeb muaj nuj nqi/ tiv thaiv txheej
mus.Cov cuab yeej tshwj xeeb txheej, nkag mus rau cov pob qij txha, chipping kuj
koj.Anti-xeb steel ntawv aptitude (dej-resistant adhesion, spin-resistance)
ua.Tsawg-kub hardening (Kev txhim kho xeb tsis kam ntawm cov roj hmab txuas, thiab lwm yam)
* Tshuaj pleev ib ce muaj nuj nqi/ dai kom zoo nkauj
mus.Txheej cov khoom ntawm steel phaj roughness (pab txhawb kev txhim kho ntawm smoothness thiab glossiness, thiab lwm yam)
koj.Yellowing resistance (inhibition ntawm yellowing ntawm dawb topcoat)
- Cov tsho nruab nrab: Cov tsho nruab nrab ua lub luag haujlwm pabcuam kom ua kom lub zog tiv thaiv xeb ntawm lub tsho hauv qab (electrodeposition) thiab kev ua haujlwm ntawm plastering ntawm lub tsho sab saum toj, thiab muaj kev ua haujlwm ntawm kev txhim kho cov xim zoo nkauj ntawm tag nrho cov duab kos duab.Tsis tas li ntawd, cov txheej txheem txheej txheej nruab nrab yog ua rau txo qis txheej txheej vim tias nws npog qhov tsis xws luag ntawm lub tsho hauv qab (scratches, plua plav adhesion, thiab lwm yam) rau qee qhov ntawm cov kab kos duab tiag tiag.
Cov xim nruab nrab yog ib hom siv roj-dawb polyester resin ua cov cob qhia yooj yim thiab kub-kho nws los ntawm kev qhia melamine resin thiab tsis ntev los no urethane (Bl).Tsis ntev los no, txhawm rau txhim kho chipping tsis kam, chipping primer qee zaum coated nrog ntub dej ntub hauv nruab nrab ua ntej txheej txheem.
1) Durability ntawm lub tsho nruab nrab
* Dej tsis kam: tsawg absorbency thiab suppresses tshwm sim ntawm hlwv
* Chiping tsis kam: nqus lub zog cuam tshuam thaum lub pob zeb pov tseg thiab txo qhov kev puas tsuaj rau cov zaj duab xis txheej ua rau lub suab thiab suppresses qhov tshwm sim ntawm scab corrosion.
* Huab cua tsis kam: Tsawg deterioration vim UV rays, thiab suppresses sab nraum zoov tev tawm ntawm lub tsho tiv no.
2) Plastering muaj nuj nqi ntawm lub tsho nruab nrab
* Cov cuab yeej undercoating: Pab txhawb kom smoothing ntawm cov tiav sab nrauv los ntawm kev npog qhov roughness ntawm electrodeposition txheej
* Solvent resistance: Los ntawm suppressing qhov o thiab tawg ntawm lub tsho loj nruab nrab nrog rau qhov hnyav ntawm lub tsho tiv no sab saum toj, qhov zoo sib xws zoo yog tau.
* Kev hloov xim: Lub tsho nruab nrab feem ntau yog grey, tab sis tsis ntev los no nws tuaj yeem siv lub tsho sab saum toj nrog cov khoom zais qis los ntawm kev pleev xim rau nws (xim sealer).
3) Cov xim nruab nrab
* Zoo yuav tsum tau rau nruab nrab lub tsho tiv no: chipping kuj, puag nkaum khoom, adhesion rau electrodeposition zaj duab xis, smoothness, tsis poob ntawm lub teeb, adhesion rau saum lub tsho, lub teeb deterioration kuj.
- Topcoat: Lub luag haujlwm loj tshaj plaws ntawm topcoat yog muab cov khoom kom zoo nkauj thiab tiv thaiv thiab tswj nws.Muaj cov khoom zoo xws li xim, nto smoothness, glossiness, thiab cov duab zoo (muaj peev xwm ua kom pom tseeb cov duab ntawm ib qho khoom hauv zaj duab xis txheej).Tsis tas li ntawd, lub peev xwm los tiv thaiv thiab tswj kev zoo nkauj ntawm cov tsheb zoo li no rau lub sijhawm ntev yog xav tau rau lub tsho loj.
- Topcoat: Lub luag haujlwm loj tshaj plaws ntawm topcoat yog muab cov khoom kom zoo nkauj thiab tiv thaiv thiab tswj nws.Muaj cov khoom zoo xws li xim, nto smoothness, glossiness, thiab cov duab zoo (muaj peev xwm ua kom pom tseeb cov duab ntawm ib qho khoom hauv zaj duab xis txheej).Tsis tas li ntawd, lub peev xwm los tiv thaiv thiab tswj kev zoo nkauj ntawm cov tsheb zoo li no rau lub sijhawm ntev yog xav tau rau lub tsho loj.
1) Cov tsho sab saum toj: Cov xim raug cais raws li cov xim pleev xim rau cov xim, thiab nws feem ntau muab faib ua mica xim, xim hlau thiab xim xim nyob ntawm seb cov xim flakes xws li flakes ntawm txhuas hmoov siv.
* Pom zoo: smoothness, gloss, vividness, av xav
* Durability: gloss txij nkawm thiab kev tiv thaiv, xim hloov, fading
* Adhesion: Recoat adhesion, 2 lub suab adhesion, adhesion nrog nruab nrab
* Solvent resistance
* Tshuaj tiv thaiv
* Kev ua haujlwm zoo: tsheb ntxuav tsis kam, kua qaub los nag tsis kam, chipping kuj
2) Environmentally phooj ywg xim
* Cov Khoom Siv Siab: Qhov no yog cov xim muaj kuab heev uas teb rau VOC (Volatile Organic Compounds) cov cai, thiab yog ib hom uas txo cov kuab tshuaj organic siv.Nws yog tus cwj pwm los ntawm kev xav zoo heev ntawm thaj av thiab siv cov khoom siv qis-molecular-qhov hnyav.
* Dej Bome Hom (dej-raws li xim): Qhov no yog xim xim uas txo qis cov organic hnyav siv thiab siv dej (dej ntshiab) ua cov xim pleev xim nyias nyias.Raws li tus yam ntxwv, qhov chaw ua kom sov (IR_Preheat) uas tuaj yeem ua kom cov dej ntws tawm hauv cov txheej txheem tha xim, yog li yuav tsum tau kho qhov chaw, thiab cov tshuaj tsuag kuj yuav tsum tau siv txoj kev electrode rau cov xim dej.
3) Cov xim ua haujlwm
* CCS (Complex Crosslinking System, complex crosslinking type paint): Nws yog ib hom urethane (isocyanate) los yog silane resin uas yog ib feem ntawm cov melamine resin, uas yog yooj yim rau acid los nag nyob rau hauv lub acrylic / melamine resin system, yog hloov. , thiab cov kua qaub tiv thaiv thiab khawb kuj zoo dua.
* NCS (New Crosslinking System, Tshiab Crosslinking Hom Xim): Tsis yog-melamine-raws li xim ua los ntawm acid-epoxy curing ntawm acrylic resin.Nws muaj cov kua qaub zoo heev, khawb tsis kam, thiab stain kuj.
- Txheej ua haujlwm ntawm lub tsho sab saum toj: Txhawm rau kev lag luam kom tau txais txiaj ntsig zoo ntawm lub hom phiaj sab saum toj, cov xim zoo ua haujlwm (atomization, flowability, pinhole, smoothness, thiab lwm yam) yog qhov tseem ceeb.Rau qhov no, nws yog ib qho tseem ceeb uas yuav tau kho tus cwj pwm viscosity nyob rau hauv ntau zaj duab xis txheej txheem los ntawm painting mus rau ci thiab hardening.Kev pleev xim ib puag ncig xws li kub, av noo, thiab cua nrawm ntawm lub rooj pleev xim kuj tseem ceeb heev.
1) viscosity ntawm resin: molecular hnyav, compatibility (solubility parameter: SP tus nqi)
2) Pigment: roj nqus, pigment concentration (PWC), dispersed particle loj
3) Additives: viscous agent, leveling agent, defoaming agent, xim sib cais inhibitor, thiab lwm yam.
4) Curing ceev: concentration ntawm functional pab pawg nyob rau hauv lub hauv paus cob, reactivity ntawm crosslinking tus neeg saib xyuas
Tsis tas li ntawd, lub thickness ntawm txheej zaj duab xis muaj kev cuam tshuam zoo rau kev ua tiav ntawm lub tsho loj.Tsis ntev los no, tus qauv viscous tus neeg sawv cev xws li microgel ua rau nws muaj peev xwm ua tiav ob qho tib si flowability thiab leveling zog, thiab cov tsos tiav lawm yog txhim kho los ntawm tuab zaj duab xis txheej.
cov
- Huab cua tsis kam ntawm cov txheej txheej saum toj kawg nkaus: Txawm hais tias lub tsheb raug nthuav tawm hauv ntau qhov chaw, cov txheej txheej saum toj kawg nkaus tau txais kev txiav txim ntawm lub teeb, dej, oxygen, cua sov, thiab lwm yam. Yog li ntawd, muaj ntau yam tshwm sim tsis zoo tshwm sim uas cuam tshuam rau kev zoo nkauj.
1) Optical phenomena
* Degradation ntawm gloss: Lub smoothness ntawm lub nto ntawm lub txheej zaj duab xis yog puas, thiab diffuse reflection ntawm lub teeb los ntawm qhov chaw nce.Cov muaj pes tsawg leeg ntawm cov resin yog ib qho tseem ceeb, tab sis kuj muaj cov nyhuv ntawm cov xim.
* Discoloration: Cov xim xim ntawm cov txheej txheem pib hloov raws li kev laus ntawm cov xim lossis cov resin hauv cov zaj duab xis txheej.Rau kev siv tsheb, yuav tsum xaiv cov xim uas tiv taus huab cua tshaj plaws.
2) mechanical phenomena
* Cov kab nrib pleb: Cov kab nrib pleb tshwm sim hauv cov txheej txheej zaj duab xis saum npoo los yog tag nrho cov txheej txheej txheej vim yog kev hloov pauv ntawm lub cev ntawm cov txheej txheem vim yog photooxidation lossis hydrolysis (tsawg elongation, adhesion, thiab lwm yam) thiab kev ntxhov siab sab hauv.Tshwj xeeb, nws zoo li tshwm sim hauv cov xim hlau ntshiab txheej zaj duab xis, thiab ntxiv rau kev hloov kho cov txheej txheem ntawm lub cev ntawm cov khoom ntawm acrylic resin thiab kev hloov kho cov txheej txheem ntawm lub cev, daim ntawv thov ntawm ultraviolet absorber thiab antioxidant. yog siv tau.
* Peeling: Cov zaj duab xis txheej yog ib feem ntawm tev tawm vim qhov txo qis ntawm cov adhesion ntawm cov txheej txheem los yog txo qis hauv cov khoom siv rheological, thiab kev ua ntawm sab nraud quab yuam xws li txaws lossis vibration ntawm pob zeb.
3) tshuaj phenomenon
* Cov kab mob stain: Yog tias muaj kab mob, kab mob, lossis cov kua qaub los nag ua rau ntawm qhov chaw ntawm cov zaj duab xis txheej, qhov yuav stains thiab discolors rau hauv pob.Nws yog ib qho tsim nyog yuav tsum tau siv cov khawb-resistant, alkali-resistant pigment thiab resin.Ib qho ntawm cov laj thawj vim li cas lub tsho ntshiab yog siv rau cov xim hlau yog los tiv thaiv cov hmoov txhuas.
- Cov kev sib tw yav tom ntej ntawm cov tsho sab saum toj: Kev zoo nkauj thiab kev tsim qauv tau dhau los ua qhov tseem ceeb hauv kev txhim kho cov khoom lag luam ntawm tsheb.Thaum teb rau ntau yam kev xav tau thiab kev hloov pauv ntawm cov ntaub ntawv xws li plastics, nws yog ib qho tsim nyog los teb rau cov kev xav tau ntawm kev sib raug zoo xws li kev ua kom tsis zoo ntawm lub tsheb raug mob thiab txo cov pa phem.Nyob rau hauv cov xwm txheej no, ntau yam topcoats rau lub tsheb tom ntej yog raug txiav txim siab.
Cia peb ua tib zoo saib ntawm cov txheej txheem kev kos duab hauv tsheb thiab pom qhov twg cov cua sov thiab huab cua hloov pauv yog cov ntawv thov tseem ceeb.Cov txheej txheem painting dav dav rau tsheb yog raws li nram no.
① Pretreatment
② Electrodeposition (undercoat)
③ Sealant painting
④ Hauv qab txheej
⑤ wax painting
⑥ Anti-Chip Primer
⑦ Primer
⑧ Sab saum toj Coat
⑨ Kev tshem tawm tsis zoo thiab polishing
Cov txheej txheem tsim tsheb yuav siv li 20 teev, ntawm 10 teev, uas yog ib nrab, cov txheej txheem teev saum toj no yuav siv li 10 teev.Ntawm lawv, cov txheej txheem tseem ceeb thiab tseem ceeb tshaj plaws yog pretreatment, electrodeposition txheej (undercoat txheej), primer txheej, thiab txheej saum toj kawg nkaus.Cia peb tsom ntsoov rau cov txheej txheem no.
Post lub sij hawm: Nov-08-2022
