Ⅰ- AcidPickling
1.-Kev txhais ntawmAcid-Pickling: Cov kua qaub yog siv los tshem tawm cov hlau oxide nplai tshuaj ntawm ib qho concentration, kub, thiab ceev, uas yog hu ua pickling.
2.- Acid-Pickling kev faib tawm: Raws li hom kua qaub, nws muab faib ua sulfuric acid pickling, hydrochloric acid pickling, nitric acid pickling, thiab hydrofluoric acid pickling.Cov xov xwm sib txawv yuav tsum tau xaiv rau pickling raws li cov khoom ntawm cov hlau, xws li pickling carbon steel nrog sulfuric acid thiab hydrochloric acid, los yog pickling stainless hlau nrog ib tug sib tov ntawm nitric acid thiab hydrofluoric acid.
Raws li cov duab ntawm cov hlau, nws tau muab faib ua hlau pickling, forging pickling, steel phaj pickling, strip pickling, thiab lwm yam.
Raws li hom khoom siv pickling, nws muab faib ua tank pickling, semi nruam pickling, tag nrho nruam pickling, thiab ntauwd pickling.
3.- Lub hauv paus ntsiab lus ntawm acid pickling: Acid pickling yog cov txheej txheem ntawm tshem cov hlau oxide nplai los ntawm cov hlau nto siv cov tshuaj, yog li nws tseem hu ua chemical acid pickling.Hlau oxide nplai (Fe203, Fe304, Fe0) tsim rau saum npoo ntawm cov kav dej steel yog cov oxide yooj yim uas tsis muaj dej nyob hauv dej.Thaum lawv muab tso rau hauv cov kua qaub los yog txau nrog cov kua qaub rau ntawm qhov chaw, cov oxide yooj yim no tuaj yeem dhau los ua cov tshuaj hloov pauv nrog cov kua qaub.
Vim yog qhov xoob, ntxeem tau, thiab tawg qhov xwm txheej ntawm oxide nplai ntawm qhov chaw ntawm cov qauv hlau lossis cov hlau tsis tshua muaj hlau, ua ke nrog kev rov kho dua ntawm cov nplai oxide nrog rau cov sawb hlau thaum lub sij hawm straightening, nro straightening, thiab kev thauj mus los ntawm lub pickling kab, cov pore tawg ntxiv nce thiab nthuav.Yog li ntawd, cov kua qaub reacts nrog oxide nplai tshuaj thiab kuj reacts nrog cov hlau substrate hlau los ntawm cov kab nrib pleb thiab qhov hws.Qhov ntawd yog hais tias, thaum pib ntawm kev ntxuav cov kua qaub, peb cov tshuaj tiv thaiv ntawm cov hlau oxide nplai thiab cov hlau hlau thiab cov kua qaub yog ua tiav ib txhij Cov hlau oxide nplai tau txais cov tshuaj tiv thaiv nrog cov kua qaub thiab yaj (solution) Hlau hlau reacts nrog cov kua qaub rau. tsim cov roj hydrogen, uas mechanically peels tawm ntawm oxide nplai (mechanical peeling effect) Lub generated atomic hydrogen txo cov hlau oxides rau ferrous oxides uas muaj feem xyuam rau cov tshuaj tiv thaiv acid, thiab ces reacts nrog acids yuav raug tshem tawm (txo).
Ⅱ-Passivation/Inactivation/Deactivation
1.- Passivation txoj cai: Lub passivation mechanism yuav piav qhia los ntawm nyias zaj duab xis txoj kev xav, uas qhia tias passivation yog vim muaj kev cuam tshuam ntawm cov hlau thiab oxidizing tshuaj, tsim ib tug heev nyias, ntom, zoo npog, thiab nrees adsorbed passivation zaj duab xis ntawm cov hlau nto.Cov txheej ntawm zaj duab xis no tshwm sim raws li theem ywj pheej, feem ntau yog ib qho kev sib xyaw ntawm oxidized hlau.Nws ua lub luag haujlwm hauv kev sib cais tag nrho ntawm cov hlau los ntawm qhov nruab nrab corrosive, tiv thaiv cov hlau los ntawm kev sib cuag nrog cov nruab nrab corrosive, yog li ntawd nws yog ib qho tseem ceeb kom tsis txhob muaj kev sib cais ntawm cov hlau thiab tsim lub xeev passive kom ua tiav cov nyhuv tiv thaiv corrosion.
2.- Qhov zoo ntawm passivation:
1) Muab piv nrog cov txheej txheem kev sib khi ntawm lub cev, kev kho mob passivation muaj cov yam ntxwv ntawm qhov tsis tuaj yeem nce qhov tuab ntawm cov khoom ua haujlwm thiab hloov xim, txhim kho qhov tseeb thiab ntxiv tus nqi ntawm cov khoom, ua haujlwm yooj yim dua;
2) Vim tias qhov tsis zoo ntawm cov txheej txheem passivation, tus neeg sawv cev passivation tuaj yeem rov ntxiv thiab siv tau, ua rau lub neej ntev dua thiab cov nqi pheej yig dua.
3) Passivation txhawb kev tsim cov pa oxygen molecular qauv passivation zaj duab xis ntawm cov hlau nto, uas yog compact thiab ruaj khov hauv kev ua tau zoo, thiab muaj kev kho tus kheej hauv huab cua tib lub sijhawm.Yog li ntawd, piv nrog rau cov txheej txheem ntawm txheej antirust roj, passivation zaj duab xis tsim los ntawm passivation yog ntau ruaj khov thiab corrosion resistant.Feem ntau ntawm cov teebmeem ntawm oxide txheej yog ncaj qha lossis tsis ncaj qha rau cov txheej txheem ntawm thermal oxidation.Nyob rau hauv qhov kub ntawm 800-1250℃, cov txheej txheem thermal oxidation siv cov pa qhuav, cov pa ntub dej, lossis dej vapor muaj peb theem txuas ntxiv.Ua ntej, cov pa oxygen hauv ib puag ncig huab cua nkag mus rau hauv cov txheej txheem oxide tsim, thiab tom qab ntawd cov pa oxygen diffuses sab hauv los ntawm silicon dioxide.Thaum nws mus txog Si02-Si interface, nws ua haujlwm nrog silicon los tsim cov silicon dioxide tshiab.Nyob rau hauv txoj kev no, cov txheej txheem txuas ntxiv ntawm oxygen nkag mus rau cov tshuaj tiv thaiv tshwm sim, ua rau cov silicon nyob ze ntawm lub interface txuas ntxiv mus rau hauv silica, thiab cov oxide txheej loj hlob mus rau sab hauv ntawm silicon wafer ntawm ib tus nqi.
Ⅲ- Phosphating
Phosphating kev kho mob yog cov tshuaj tiv thaiv uas tsim ib txheej ntawm zaj duab xis (phosphating zaj duab xis) rau saum npoo. Cov txheej txheem kho phosphating feem ntau yog siv rau ntawm cov hlau, nrog rau lub hom phiaj ntawm kev muab cov yeeb yaj kiab tiv thaiv kom cais cov hlau los ntawm huab cua thiab tiv thaiv corrosion;Nws kuj tseem siv tau los ua primer rau qee yam khoom ua ntej pleev xim.Nrog rau txheej txheej ntawm phosphating zaj duab xis, nws tuaj yeem txhim kho qhov adhesion thiab corrosion kuj ntawm cov xim txheej, txhim kho cov khoom zoo nkauj, thiab ua rau cov hlau nto zoo nkauj dua.Nws tuaj yeem ua lub luag haujlwm lubricating hauv qee cov txheej txheem hlau ua haujlwm txias.
Tom qab phosphating kev kho mob, lub workpiece yuav tsis oxidize los yog xeb rau lub sij hawm ntev, yog li daim ntawv thov ntawm phosphating kev kho mob yog heev nthuav thiab kuj yog ib tug nquag siv hlau nto kho txheej txheem.Nws yog siv ntau hauv kev lag luam xws li tsheb, nkoj, thiab kev tsim khoom siv tshuab.
1.- Kev faib tawm thiab kev siv phosphating
Feem ntau, kev kho mob saum npoo yuav nthuav tawm cov xim sib txawv, tab sis kev kho phosphating tuaj yeem ua raws li qhov xav tau tiag tiag los ntawm kev siv cov phosphating sib txawv los nthuav tawm cov xim sib txawv.Qhov no yog vim li cas peb feem ntau pom phosphating kev kho mob hauv grey, xim, lossis dub.
Hlau phosphating: tom qab phosphating, qhov saum npoo yuav pom cov xim zaj sawv thiab xiav, yog li nws tseem hu ua xim phosphorus.Cov tshuaj phosphating tsuas yog siv molybdate raws li cov khoom siv raw, uas yuav tsim cov xim zaj sawv xim phosphating zaj duab xis rau saum npoo ntawm cov ntaub ntawv hlau, thiab tseem yog siv los pleev xim rau hauv qab txheej, thiaj li ua tiav cov kev tiv thaiv corrosion ntawm lub workpiece thiab txhim kho cov adhesion. ntawm txheej txheej.
JINBAICHENG yog ib lub tuam txhab ua yeeb nkab steel hauv Suav teb, Peb tuaj yeem tsim thiab muab cov yeeb nkab seamless steel, welded yeeb nkab, ssaw yeeb nkab, gi yeeb nkab nrog rau saum npoo ntawm Acid-P.ua ickling, Passivation, thiab Phosphating.Peb muab kev pabcuam customized-tailor thiab yuav muab cov kev daws teeb meem zoo tshaj plaws rau koj cov haujlwm.Tiv tauj peb rau tus nqi zoo tshaj:https://www.sdjbcmetal.com/steel-pipe-series/ email:jinbaichengmetal@gmail.com los yog WhatsApp ntawmhttps://wa.me/18854809715
Post lub sij hawm: Lub Xya hli ntuj-12-2023