1.How yog txheej ua kom zoo rau substrate ua ntej-} cov txheej txheem kho?
Cov txheej yuav tsum ua pom zoo rau lub galvanized substrate nto. Cov tub ntxhais ntawm substrate pretreatment yog kom tshem tawm cov xwm txheej uas cuam tshuam nrog cov nplaum. Cov ntsiab lus ntawm cov txheej txheem no cuam tshuam txheej txheej Adhesion (qhov ntsuas tau qhov tseem ceeb ntawm cov txheej txheem zoo):
Degreasing: If oil or dust remains on the substrate surface (from the galvanizing process or storage), the coating will not be able to directly contact the substrate, resulting in "false adhesion" (easily bubbling and peeling later). Yog li ntawd, thaum lub sij hawm cov theem degreaser, feem ntau yog 1-5%), ntsuas kub (30-60 feeb), thiab txau siab) yuav tsum yog qhov zoo. Lub sijhawm tsis txaus los yog luv luv lub sijhawm kho yuav tsis tshem tawm cov roj, thaum ntau dhau high kub siab yuav ua rau cov txheej txheem zinc me ntsis, ua kom muaj kev puas tsuaj adcesion.
Phosphaating / Passivation: phosphating (sib sau micron - scromate postrate zaj duab xis) thiab tiv thaiv txheej txheem sib ze ntawm zinc txheej thiab txheej. Yog hais tias cov duab phosphating cov duab ua tuab yog qhov tsis sib xws (feem ntau 3-5μm), yog kev tswj hwm tus nqi ntawm lub zos ntawm lub zos thiab txawm tias "delamination ntawm txheej thiab substrate".
2.Yuav ua cov txheej txheem zoo cuam tshuam rau cov txheej txheem npaj xim?
Qhov kev sib txuam ntawm cov txheej sib xyaw ua ke thiab qhov tsis muaj kev cuam tshuam ntawm cov txheej txheem ua ntej, cuam tshuam nrog nws cov tsos thiab ntom:
Xim stirring thiab pom: xim (xws li polyester thiab fluorocarbon resins) yuav tsum tau sib xyaw ua ke ntawm cov pigments, cov kuab tshuaj, thiab ntxiv. Tsis txaus ntseeg (dhau tsawg dhau ntawm lub sijhawm ua kom nruj lossis tsis txaus ntseeg lub sijhawm) tuaj yeem ua rau tsis sib xws thiab "blooming" (ib nrab sib txawv ntxoov ntxoo ntawm cov xim). Kev ua tiav tsis tiav (siv lub lim lim dej tsis tau muaj zog tsawg dua 120 mesh " Pleev xim viscosity tswj: Cov xim viscosity yuav tsum tau hloov kho ua ntej txheej (feem ntau yog nrog cov kuab tshuaj). Yog tias qhov viscosity dhau lawm, txheej txheej yuav tsim "txiv kab ntxwv tev" kev ntxhib los mos vim "lub sijhawm tsis zoo" thaum lub sijhawm txheej; Yog tias cov viscosity yog qhov tsawg dhau, nws yuav yooj yim "sag" (cov txheej yuav yog tuab thiab droop hauv qee thaj chaw). Ob qho ntawm cov xwm txheej no yuav ua rau cov txheej tsis sib xws tuab (feem ntau 5,5μm), uas muaj kev cuam tshuam rau kev tiv thaiv kev tiv thaiv (tej thaj av nyias nyias muaj zog hnav thiab cov chaw tuab.
3.Yuav ua cov txheej txheem zoo cuam tshuam rau txheej txheem txheej txheej txheej?
Txheej yog ib kauj ruam tseem ceeb hauv kev hloov pauv cov txheej rau lub substrate nto. Cov txheej txheem thiab cov tsis ncaj qha cuam tshuam cov txheej xim du thiab tuab sib xws:
Txheej Txheej Xaiv: Cov Menyuam Cov Menyuam (feem ntau siv) thiab cov txheej txau (rau cov duab hniav sib ntxiv) yog cov qauv loj. Thaum cov menyuam txheej menyuam yog xaiv, lub hardness ntawm cov menyuam (feem ntau ntug dej ib tug 60-80), lub siab ntawm cov yob, thiab kev sib piv ntawm cov menyuam ceev nrog cov ceev ceev yog qhov tseem ceeb. Tsis txaus lub zog tawv muaj peev xwm ua rau tsis sib xws rau sab untomal txheej tuab vim tias "muab cov deforming deformation." Mismatched cov menyuam ceev (piv txwv li, nrawm dhau) tuaj yeem ua rau muaj txheej txheem hauv txheej, cuam tshuam rau cov tsos.
Kev tswj cov naj npawb ntawm txheej pib: txheej yog feem ntau muab faib ua "Primer + Topcoat" (lossis tom qab). Yog tias tus thawj coj tau thov yuag (tsis tau npog cov txheej zinc Yog hais tias ib lub tsho tiv no tau siv tag nrho cov tuab (tshaj 30μm), npuas thiab kho tau yooj yim thaum lub sijhawm kho tau yooj yim ntawm sab hauv thiab sab nraud ntawm txheej, uas tuaj yeem sib haum xeeb txheej txheej ncaj ncees.
4.How ua cov txheej txheem zoo cuam tshuam cuam tshuam rau kev kho cov txheej txheem?
Kev kho qhov kub thiab sijhawm thiab lub sijhawm: Cov xim sib txawv muaj cov xim ntsuas kub (piv txwv li, cov xim fluorocarbon) Yog tias qhov ntsuas kub nyob hauv qab qhov kev txwv qis dua, cov txheej yuav tsis muaj tag nrho cov tawv nqaij (mem hluav nyob hauv qab no h) Yog tias qhov kub nce siab tshaj qhov txwv siab tshaj plaws ntawm cov kev txwv sab sauv, cov txheej yuav dhau crosslink lossis tseem decompemoration - ua rau muaj kev phom sij (tawg paj tawg thaum huab cua tsis kam (xws li UV laus).
Qhov cub kub kub: Yog tias qhov cub ntsuas kub yog qhov tsis sib xws (thaj chaw sib txawv ntawm cov ntaub ntawv sib txawv ntawm daim ntawv yuav sib txawv. Qee qhov chaw tuaj yeem ua tau raws li qhov kev ua tsis tau zoo, thaum lwm tus yuav raug tso tseg (mos) lossis overcured (nkig tsis zoo tshaj plaws ntawm cov yob.
5.Yuav ua cov txheej txheem zoo cuam tshuam rau posi- kev ua thiab cov txheej txheem winding?
Cov txheej txheem cua txias: Tom qab kho, cov txheej yuav tsum tau txias (feem ntau nrog huab cua thiab dej). Yog tias tus nqi txias yog qhov nrawm dua (xws li txias txias (xws li txias txias), muaj peev xwm tsim cov txheej txheem sab hauv, muaj peev xwm ua rau sab hauv txheej txheem tab sis cuam tshuam rau nws qhov ntom ntom). Tsis txaus txias (rewinding ua ntej kub poob qis dua 50 degree) tuaj yeem ua rau cov txheej txheem cua sov ntxiv vim yog cov khoom siv cua sov uas muaj los ntawm qhov chaw tsis tiav.
Rewinding nro tswj: ntau dhau nro thaum winding tuaj yeem ua rau muaj peev xwm ua rau muaj kev sib cav thiab khawb hauv cov txheej txheej vim tias muaj teeb meem txawv teb chaws (piv txwv li yog muaj teeb meem txawv teb chaws). Kev suav ntau heev tuaj yeem ua rau cov yob xoob, uas tuaj yeem hloov tau yooj yim thaum lub zog kev sib txhuam thiab hnav ntawm qhov pom kev zoo nkauj thiab kev tiv thaiv zoo.