Khib los ntawm me me blemishes ntawm kojCoated steel? Unmasking "cratering"
Txoj kev ua txhaumNtawm koj cov xim pleev xim ua ntej steel chev tshwm sim thaum cov xim tsis kis tau zoo thiab tusyees. Nws zoo li daim ntawv me me me me lossis cov ntawv pov tseg nyob rau saum npoo vim tias cov xim rub tawm ntawm qee qhov me me. Yog tias cov qhov no tsis zoo txaus, koj yuav pom cov hlau liab qab hauv qab. Qhov no messes li cas cov kauj zoo li cas thiab, tseem ceeb tshaj, nws txhais tau tias cov xim tsis tiv thaiv cov hlau zoo li nws yuav tsum.
Ntxiv rau qhov teeb meem ntawd, koj kuj yuav tsum xav paub txog lwm yam teeb meem twg tshwm sim nrog cov xim coated hlau coils.
Xim-txheej phaj shrinkage yog cov ntau ntxiv, koom nrog cov khoom nyoos, khoom siv, thev naus laus zis, thiab lwm yam. Cov hauv qab no yog kev soj ntsuam ntawm cov kev ua rau muaj kev sib raug zoo ntawm kev tawm tsam
Ua rau ntawm cov xim-txheej hlau ua yuam
Qhov tsim ntawm kev ua pob yog feem ntau los ntawm ntau yam cuam tshuam rau hauv cov hom loj hauv qab no:
Kev tsis huv ntawm cov txheej txheem (cov khoom siv hauv paus) nto
- Roj, silicone, waxes, lossis lwm yam qis qis tiaj txoj kev nro tshuaj:Qhov no yog feem ntau cov thiab thawj ua rau kev ua pob. Txawm tias cov roj ntau cov roj, ntiv tes, los ntawm cov kua roj ntshav, tso cov tshuaj tiv thaiv, lossis txawm tias muaj cov nyom nyob rau hauv huab cua) muaj cov txheej txheem nruj tshaj li cov txheej txheej. Qhov no txwv tsis pub txheej los ntawm ntub cov chaw no thaum sib chwv, ua rau nws "tsis lees yuav" thiab daim ntawv cog lus sab hauv, tsim kev ua neej.
- Hmoov av thiab cov lus:Hmoov av, hlau shaavings, fibers, thiab lwm yam ntawm cov txheej txheem txheej av lossis hauv cov txheej txheem ntau lawm "nyob rau hauv cov txheej txheem" nyob rau hauv cov txheej txheej "nyob rau hauv cov txheej txheej uas tabkuaj kev ua neej.
- Tsis txaus ua hauj lwm tsis txaus:Yog tias tsis tu thiab kev ntxuav tu, cov roj uas muaj meej los yog cov tshuaj paug ntawm cov chaw tsis muaj zog tuaj yeem dhau los ua tus thawj ua txhaum.
Cov teeb meem ntsig txog teeb meem
- Imbalanced nto nro ntawm txheej: Yog hais tias txheej txheem txheej uas tsis tsim nyog yog tsis tsim nyog, kev sib txawv ntawm cov txheej txheem evapents ntawm ntau yam (tshwj xeeb yog cov tshuaj tsw qab), lossis ntau dhau ntawm cov kev sib txawv hauv zos muaj kev sib tw hauv zos muaj kev sib txawv hauv zos ua kom sib txawv
- Uneven dispersion ntawm pigments thiab fillers:Cov neeg tsis zoo ntawm cov pigments thiab fillers nyob rau hauv cov txheej tuaj yeem tsim agglomerates uas ua raws li "cov khoom txawv teb chaws" hauv cov yeeb yaj kiab txawv teb chaws, ua rau kom cov txheej txheem mus ncig ib puag ncig lawv.
- Kev siv tsis raug ntawm defoamers:Defoamers yog feem ntau tsawg-nto-tension tshuaj. Yog tias hom kev tiv thaiv tsis tsim nyog, cov tshuaj tsis tsim nyog, lossis defoamer tsis muaj qhov sib luag, nws yuav hloov ua kom tawg rau ntawm cov yeeb yaj kiab txheej.
- Incompatibility ntawm cov txheej txheem sib txawv:Yog tias txoj kab ntau lawm ntawm cov xim sib txawv lossis cov txheej txheej qub uas tsis huv yuav ua rau muaj peev xwm ua tau zoo nrog cov khaub ncaws tshiab, muaj peev xwm ua rau muaj peev xwm ua rau muaj peev xwm ua rau muaj peev xwm ua rau muaj peev xwm ua rau muaj peev xwm ua rau muaj peev xwm ua kom tiav nrog cov khaub ncaws tshiab.
- Dhau qub ntov viscosity:Txheej ci nrog tsawg heev viscosity muaj ntau dua nquag nrawm shrinkage thaum ntsib kev sib tw tsis muaj zog, tsim cov khoom noj kom pom tseeb.
Txheej Txheej Txheem Tswj Cov Teeb Meem
- TXHEEJ IB NRAB YIM ZAJ DUA:Roj Met, silicone aerosols, plua plav, thiab lwm yam paug hauv cov txheej txheem sib xyaw ua ke lossis ntub dej, ua rau muaj paug.
- Txheej Cov Menyuam Cov Menyuam Tsis Muaj ..Roj cov khoom seem, cov chaw seem Silicone, lossis lwm yam paug ntawm cov txheej txheem txheej sib paug tau ncaj qha cov txheej thiab hlau phaj.
Ci txheej txheem teeb meem
- Tsis yog greatable kub lossis cua sov tus nqi:Yog tias qhov kub nce nrawm heev, cov kuab tshuaj yaj ceev nrawm, tiv thaiv kev ua kom muaj kev ua ntej lossis cov npuas ua paug; Yog tias qhov ntsuas kub tsis txaus, cov txheej tsis muaj qib kom zoo, thiab cov kev cuam tshuam ntawm cov paug tsis muaj zog zuj zus.
- Cov kab mob tsis huv hauv qhov cub ci:Sab hauv phab ntsa ntawm ci cub yuav coated nrog cov tshuaj pleev xim lossis lwm cov tshuaj uas muaj cua sov rau qhov chaw kub ntawm qhov chaw kub,.
Khoom siv thiab ib puag ncig yam
- Cov teeb meem huab cua sib ncig:Cov pa hluav taws xob lim dej ntawm cov kab ntau lawm yog tsis muaj zog thiab tsis tuaj yeem ua kom tshem tawm cov kuab paug los ntawm huab cua.
- Cov Khoom Siv Roj Tshuab Roj:Lubricants siv nyob rau hauv cov khoom siv kho txhua yam rau cov kab ntau lawm, xws li bearings thiab lub zog, tej zaum yuav xau thiab cov hlau nplaum me me.
- Cov neeg teb xov tooj tsis zoo:Thaum cov neeg ua haujlwm lis cov txheej txheej lossis cov phiaj hlau, roj ntawm lawv cov tes lossis cov hmoov silicone lossis silicone hmoov ntawm cov hnab looj tes yuav ua cov khoom siv paug.
Yuav ua li cas txiav txim siab qhov ua rau kev ua pob?
1. Saib xyuas cov yam ntxwv ntawm kev ua dab neeg ("kuaj cov tsos mob")
Cov duab, qhov loj me, faib tawm, thiab muaj cov khoom txawv teb chaws ntawm qhov chaw ntawm chaw ua si tuaj yeem muab cov lus qhia tseem ceeb.
Daim duab thiab Center of Fatering:
- Kev ua txhaum nrog cov khoom txawv teb chaws (xws li cov khoom me me, cov nplais, lossis cov roj Silicone) ntawm qhov chaw:Muaj tseeb qhia tau kev sib kis rau ntawm cov plua plav sab nraud lossis ib puag ncig. Cov tshuaj paug tsis muaj cov ntsiab lus tsawg-ntom nti lossis cov nyom, ua rau kom tuab ib puag ncig lawv. Ua tib zoo tshuaj xyuas cov khoom txawv teb chaws nyob rau hauv lub khob tsom iav tuaj yeem pab txheeb xyuas qhov tsis huv (piv txwv li, plua plav).
- Irregaturally puab, ntiav-aws, thiab thaj chaw uas muaj thaj chaw loj: Tej zaum yuav cuam tshuam txog kev tsis khov kho cov viscosity, tsis zoo tus kheej-leveling cov yam ntawm txheej, lossis daim ntawv thov tsis sib xws.
- Tsis tu ncua zoo li, tob, thiab ntom:Feem ntau cuam tshuam nrog Silicone paug lossis cov roj paug. Silicone tau kis tau yooj yim rau hauv txheej thiab cov qauv ntau craters.
- Ntshiab qhov chaw ua haujlwm zoo li:Yuav yog vim kev siv tsis raug ntawm defoamers nyob rau hauv txheej txheej, huab cua npuas nyob rau hauv txheej, lossis kev paug loj ua rau tag nrho cov txheej txheem.
Kev faib tawm ntawmTxoj kev ua txhaums
- Sawb tawm faib raws cov txheej txheem txheej txheem:Tej zaum yuav yog vim qhov tsis xws luag nyob rau hauv cov txheej txheej (xws li hnav, khawb, lossis paug nrog cov khoom txawv teb chaws) lossis kev sib txawv ntawm cov khoom sib kis.
- Random faib thoob plaws lub vaj huam sib luag:Ntau dua vim hmoov av lossis roj rau huab cua tsis huv hauv huab cua, lossis teeb meem nrog cov txheej nws tus kheej (xws li cov tshuaj tiv thaiv lossis cov khoom siv tsis sib xws).
- Mloog zoo ntawm cov npoo ntawm substrate:Qhov no yuav cuam tshuam nrog cov kev cuam tshuam ntawm cov npoo ntawm cov npoo ntawm cov npoo, tsis muaj zog ntawm cov npoo ntawm cov txheej txheej ntawm cov txheej txheem txheej txheej ntawm txheej txheej ntawm txheej.
- Tshwm sim tsuas yog nyob rau ntawm cov haujlwm tshwj xeeb:Qhov no feem ntau qhia txog cov txheej txheej txheej ntawm txoj hauj lwm ntawd lossis kev txawv txav hauv txheej txheem txheej txheej txheej txheej ntawm txoj haujlwm ntawd.
Sij hawm ntawmTxoj kev ua txhaumkev tshwm sim
- Tshwm sim sai tom qab txheej thiab yog pom ua ntej ci:Feem ntau tshwm sim los ntawm substrate nto kev sib kis, txheej cov menyuam teeb meem, lossis cov xim tsis zoo pleev xim plug zog.
- Tshwm sim thaum lossis tom qab ci:Feem ntau yuav cuam tshuam txog cov teeb meem xim txheej txheem (cov kuab tshuaj evaporation, cov xim tsis sib xws
2. Lw cov txheej txheem ntau lawm ("tshawb xyuas keeb kwm")
Raws li kev pom zoo tshwm sim, ua ke nrog cov ntaub ntawv ntau lawm thiab cov txheej txheem tsis sib haum, qhov tau txais txuas ntxiv mus.
- Khij cov ntaub ntawv Pretrecticment cov ntaub ntawv
Puas yog cov concentration, kub, thiab txau siab ntawm cov kev daws teeb meem ib txwm muaj?
Puas yog qhov zoo ntawm cov dej yaug yaug?
Puas yog cov tuab tuab thiab ua paug ntawm cov hloov pauv coating ua tau raws li cov qauv?
Tau muaj cov cuab yeej siv tam sim no txij nkawm (piv txwv li, kev coj hloov tsheb, uas yuav ua kom paub cov roj nplua nyeem tshiab)?
Puas yog lub substrate paug ua ntej cia?
- Kuaj cov txheej siv
Puas muaj ib qho tshiab batch ntawm txheej tau qhia?
Puas yog cov coating kom huv si tov ua ntej siv?
Puas yog txheej txheej viscosity, cov ntsiab lus khib nyiab, thiab lwm yam tsis sib xws li ib txwm muaj?
Puas muaj cov ntxiv additives tau ntxiv, lossis muaj tus neeg xa khoom ntxiv tau hloov pauv?
Muaj kab kab ntau lawm tsis ntev dhau los hloov pauv ntawm cov xim sib txawv lossis hom txheej? Puas yog kev ntxuav tu?
Puas muaj kev tas sij hawm lossis siv lub tsho hnav?
- Kos rau txheej txheej txheej txheem
Plaster Thickness:Puas muaj kev hloov pauv? Tshawb xyuas cov ntawv nyeem tuab hauv online kom pom tias cov txheej hauv cov chaw ua kom tuag yog qhov yooj yim.
Ci kub nkhaus:Puas yog qhov ntsuas kub hauv txhua cheeb tsam ntawm lub qhov cub ci stable? Puas yog cua sov npaum li cas? Kuaj seb puas muaj cov xim seem lossis cov khoom txawv teb chaws sab hauv qhov cub.
Kab Ceev: Puas muaj qhov txawv txav hloov pauv?
Cov txheej txheej muaj mob: Muaj cov txheej txheej txheej tau raug ntxuav, hloov, lossis av tsis ntev los no? Txheeb xyuas cov menyuam nyob saum npoo rau pom qhov tsis xws lossis paug.
- Kos rau ib puag ncig
Puas yog qhov kev ua haujlwm hloov cua tshuab ib txwm muaj?
Dab tsi yog huab cua pom kev ua tau zoo?
Puas yog qhov kev qhia ua haujlwm nyuam qhuav ua haujlwm xws li cov xim txau lossis cov khoom siv lubrication uas tuaj yeem tsim cov roj mist lossis silicone?
Puas muaj cov txheej roj nplua nyeem xau ntawm cov khoom siv?
3. Ua cov kev sim ua haujlwm ("kuaj ntsuas kev kuaj mob")
Thaum kev soj ntsuam ua ntej tsis tuaj yeem txiav txim qhov ua rau, kev kuaj sim cov kws sim tshuaj.
- Daim txheej thiab tshuaj ntsuam tsis yog:
Fourier Transform Infrared Spectroscopy (FTIR): Tshawb xyuas cov tshuaj txawv teb chaws los txiav txim siab muaj cov khoom ua kom muaj ntshav los yog roj av, lossis lwm yam tshuaj txawv teb chaws.
Kev ntsuas hluav taws xob me me ntawm hluav taws xob (SEM) ua ke nrog cov tshuaj tua hluav taws xob lossis tshuaj xyuas cov khoom sib xyaw ua ke ntawm cov tshuaj txawv teb chaws lossis tshuaj xyuas saum npoo txawv teb chaws lossis saib xyuas thaj chaw kom paub txog cov khoom paug.
- Txheej Txheej Tigh ntsuas:
Kuaj cov txheej nro ntawm txheej siv thiab sib piv nws nrog cov txiaj ntsig tus qauv los txiav txim siab yog tias txheej nws tus kheej muaj teeb meem.
- Ntsuam xyuas tsis taus
Kuaj cov wettability ntawm txheej ntawm substrate huv thiab ntawm kev simulated tsis sib xws los txiav txim cov txheej rhiab rau kev paug.
Los ntawm cov txheej txheem sab saud Qhov no yog ib qho txheej txheem daws teeb meem uas yuav tsum muaj kev paub, nthuav dav, thiab kev paub zoo.
Yuav daws cov teeb meem no li cas
Cov hauv qab no yog kev txhim kho kev txhim kho rau "kev sib tua" (kuj tseem siv tau rau lwm qhov tsis xws luag), muab faib ua ob peb qhov tseem ceeb:
I. Los ntawm kev tswj khoom thiab cov khoom siv kom ua tau zoo (thaiv "nkag")
Nov yog qeb tseem ceeb tshaj plaws, kom ntseeg tau tias cov ntaub ntawv siv yog "huv" thiab "tsim nyog."
- Ntxiv D .. Cov Khoom Siv Khoom Siv
Kev soj ntsuam nruj thiab xaiv:Muab cov tshuaj tiv thaiv ua ntej nrog lub koob npe zoo, muaj peev xwm ua tau zoo, thiab ib qho tsim kom zoo tswj kev tswj hwm.
Thov Cov Lus Qhia Cov Ntaub Ntawv:Tau txais cov ntsiab lus tseem ceeb xws li cov nro, viscosity, defoober cov ntsiab lus, thiab batch ruaj khov ntawm txheej.
Tsim Kev Tshuaj Ntsuam Xyuas Kev Lag Luam: Kev tshawb xyuas nruj ntawm txhua pawg ntawm cov txheej txheej, suav nrog viscosity, cov ntsiab lus khib nyiab, xim, thiab muaj cov sediment lossis impurities. Simulate txheej txheej txheej ntawm kev sim lossis theem nrab-teev kab kom paub meej tias cov khoom ntws thiab kev tawm tsam kom ua rau kev tuag.
Ua cov khoom xa khoom siv tsis tu ncua:Tsis tu ncua saib xyuas cov khoom lag luam cov khoom lag luam zoo thiab ua cov kev txawj ntse ib txwm los daws cov teeb meem muaj peev xwm.
Ua kom ntseeg tau tias qhov kev tiv thaiv kev cia rau txheej txheej: Cia cov txheej txheem tso nruj raws li cov lus pom zoo kom tsis txhob muaj kev tsis txaus ntseeg lossis kev sib xyaw ua kom sov siab, cov cua sov tsawg, av qeeg. Xyuas kom meej kev sib xyaw ua ntej siv.
- Ua kom zoo substrate zoo thiab pretricate
Txhim kho substrate huv:Qhov no yog qhov tseem ceeb ntawm kev tshem tawm ua ke. Txhim khu kev tu ua kom huv degrees kom ua kom tiav tag nrho cov organic thiab cov roj tiv thaiv cov roj av, ntiv tes, ntiv tes, thiab hmoov av. Txiav txim siab siv cov txiaj ntsig zoo dua lossis nce qib ntawm cov theem kev ntxuav tu.
Txhim Kho Conpersion Txheej Txheem Kom Zoo:Xyuas kom meej tias cov tshuaj hloov pauv kev hloov pauv (xws li phosphating txheej, chromating passivation txheej) qauv, thiab kev tswj hwm qhov tsim nyog coating tuab. Nquag cov ntsiab lus tseem ceeb xws li kev kub siab, kub, thiab ph ntawm pretreatment tank tov.
Zam kev ua paug theem nrab ntawm substrates:Tom qab kev nthuav qhia, substrates yuav tsum tau tiv thaiv los ntawm kev rov ua paug los ntawm kev ua pa tawm los ntawm kev tua hluav taws, hmoov av, lossis tib neeg tuav ua ntej nkag mus rau ntawm thaj chaw. Xav txog kev txhim kho cov pa huv cua lossis txhim kho txoj kev sib txuas.
Ii. Kev tswj cov khoom zoo ntawm cov txheej txheem tsis thiab cov cuab yeej txij nkawm (tswj cov "txheej txheem")
Qhov no yog nyob rau theem kab ntau lawm, kom ntseeg tau tias cov txheej txheem tau siv thiab kho kom raug thiab tsis zoo.
- Nruj me ntsis tswj cov txheej txheem txheej txheej
Zoo tswj ntawm txheej txheej tuab:Qhov no yog ib qho ntawm cov feem ntau ncaj qha cuam tshuam rau kev ua ntoo. Siv cov tshuab txheej kub-precision coating tshuab nruab nrog kev tshuaj xyuas online ua kom zoo thiab tsis siv neeg txheej txheej ruaj khov thiab uniform txheej tuab uas tau raws cov qauv.
Txhim Kho Txheej Txheej Dov:
Kev tshawb xyuas tsis tu ncua thiab kev txij nkawm: nquag tshuaj xyuas cov txheej txheej hnav, khawb, thiab huv si lossis zom lawv raws li xav tau.
Xyuas kom muaj kev nyuaj siab:Xyuas kom meej tias lub siab nruab nrab ntawm cov txheej txheej chais thiab cov phiaj hlau yog cov khaub ncaws hlau yog cov khoom siv tsis sib xws thiab ruaj khov kom tsis txhob muaj kev sib txawv lossis tsis muaj zog hauv zos.
Saib cov kab ntau lawm:Nquag ntxuav lub tshuab txheej, cov kav dej, cov khoom lag luam kom tiv thaiv cov roj stains, hmoov av, thiab lwm yam paug los ntawm polleding txheej lossis substrate.
- Txhim kho cov txheej txheem ci ci
Kho kom meej tswj ntawm ci kub thiab sijhawm: Kom ntseeg tau tias qhov kub nyob hauv txhua thaj chaw ntawm cov ci cub yog ruaj khov thiab hnav ris tsho, thiab nruj me ntsis ua raws li cov khoom siv khoom siv kom pom kev zoo. Zam kev kub dhau heev (uas yuav ua rau txheej decomposition lossis britleness) lossis tsis txaus siab kub (uas yuav ua rau muaj kev kho tsis tiav lossis cov khoom ntws tsis tiav).
Tsim Nyog Teem Qhov Ntsig Cua Sov:Ua kom lub sijhawm txaus rau cov kuab tshuaj kom yaj ua ntej cov khaubncaws kua tawv nqaij ua ntej cov tawv nqaij, tiv thaiv cov kuab tshuaj lossis cov tshuaj paug los ntawm cov yeeb yaj kiab txheej.
Tshawb xyuas qhov huv ntawm lub cub cub ci:Nquag ntxuav cov xim pleev xim rau lossis cov tshuaj tsw qab adhering rau sab hauv phab ntsa kom tiv thaiv lawv los ntawm kev rov ua cov duab ntub dej ntawm cov duab ntub dej siab.
- Txhim Kho Ib puag ncig
Nruab ib lub tshuab ua kom huv si:Nruab qhov kev lim dej siab ua haujlwm ntawm thaj chaw lim dej thiab qhov cub tso rau hauv cov plua plav, cov lus, thiab cov pa tawm hauv cov pa kom tsawg.
Tswj hwm siab: Cov txheej txheej xim tuaj yeem tswj tau lub siab me ntsis kom tiv thaiv tsis tau cov huab cua tsis muaj kev tiv thaiv sab nraud.
Tswj kub thiab vaum: Tswj qhov kub khov kho thiab av noo hauv qhov chaw ua haujlwm kom tsis txhob muaj kev hloov pauv tseem ceeb uas yuav cuam tshuam cov txheej txheem kev ua tau zoo thiab cov txiaj ntsig sib dhos.
Los ntawm cov kev tsim kho no ntau, cov kev txhim kho kev txhim kho hauv npoo npoo, yog txo cov khoom lag luam steel-me me, yog li ua kom cov neeg siv khoom txaus siab. Qhov no yuav tsum muaj kev sib koom tes ntawm thev naus laus zis, kev tswj hwm, thiab txhua tus neeg ua haujlwm.
