Phosphating thiab nws cov tub ntxhais substrate
Phosphatating yog cov cuab yeej siv dav dav siv uas txhawb cov kev ua tau zoo thiab cov kav hlau ntawm cov hlau hla kev lag luam. Kev xaiv ntawm substrate yog pivotal, raws li hlau cuam tshuam sib txawv nrog phosphating daws teeb meem. Thaum nug uashlaufeem ntau siv raws li substrate rau phosphating,hlautawm raws li kev xaiv primalent. Qhov kev nyiam no los ntawm cov hlau qhov sib xyaw ntawm cov khoom siv mechanical, tus nqi- ua tau zoo, thiab kev sib raug zoo nrog cov txheej txheem phosphating.
Hlau, hlau - Raws li alloy, reacts yooj yim nrog phosphating kev daws teeb meem los ua ib qho ruaj khov, tus nqi phosphote txheej. Qhov txheej no tau txhim kho corrosion tsis kam, txhim kho cov xim nplaum, thiab txo cov kev sib txhuam ntawm cov chaw txav mus los. Nws cov thoob plaws siv hauv Automotive, Aerospace, kev tsim kho, thiab kev tsim khoom lag luam txuas ntxiv kos nws lub luag haujlwm ua cov thawj substrate rau phosphatating.
Txhawm rau kom nkag siab tias yog vim li cas steel dominates, peb yuav tsum tshawb xyuas phosphall cov txheej txheem thiab cov hlau sib cuam tshuam nrog nws. Cov ntu tom ntej npog cov tswv yim phosphalls, cov txiaj ntsig zoo ntawm cov txheej txheem, tiag}} ntiaj teb siv, thiab yav tom ntej tiam.
Qhov tseem ceeb ntawm kev xaiv substrate hauv phosphating
Cov txheej txheem phosphating ua tiav kev xaiv siab rau kev xaiv substrate. Ib substrate haum yuav tsum muaj kev cuam tshuam nrog phosphating daws los tsim cov ris tsho hnav, ntom, thiab zoo {{adhered phosphote txheej. Incomption subment tawm cov nyiaj nyias, porous, lossis tev pleev xim uas tsis muaj kev tiv thaiv lossis ua haujlwm.
Muaj cov ntawv thov kev thov substrates uas tshuav nyiaj sib npaug, raug nqi, thiab muaj {}} hlau ua tau raws tag nrho peb. Nws tiv thaiv kev tsim khoom thiab qhov kawg -} Siv cov kev ntxhov siab ntau dua txhuas lossis cov ntaub ntawv, cov pas nrig) rau kev tsim qauv sib txawv.
Nyob rau hauv kev lag luam hauv tsheb, piv txwv li cov khoom siv ntau yuav tsum phosphating ua ntej tha xim, hlau muaj txiaj ntsig thiab tus nqi {{} ua tau zoo ua rau nws zoo tagnrho. Yog tsis muaj hlau, phosphating yuav tsis muaj txiaj ntsig thiab cov nqi zog, txwv cov kev siv roj ntau.
Txheej txheem cej luam ntawm phosphating txheej txheem
Phosphating feem ntau cuam tshuam nrog cov hlau substrate nyob rau hauv ib tug dilute aqueous daws ntawm phosphoric acid thiab ntxiv (accelerators, stabiliers, hloov kho); Txau lossis txhuam txoj kev kuj tseem siv rau ntau yam seem / duab.
Thaum lub sij hawm phosphating, tshuaj lom neeg cov kev tshua nyob rau ntawm substrate - kev daws cuam tshuam tsis muaj me me ntawm phosphate suav nag lossis nag los. Cov hom txheej txheej ntawm cov hom kev daws teeb meem, txheej txheem ntsuas kub / sijhawm, thiab substrate xwm.
Rau cov hlau, cov phosphote zoo sib xws yog hlau, zinc, thiab manganese phosphate, txhua tus muaj cov khoom tshwj xeeb rau kev siv tshwj xeeb. Hlau cov ntawv sib xyaw ua ke enables cov kev sib haum tau zoo, yielding siab siab- zoo, kev lag luam- txheemtxheej.
Vim li cas cov hlau yog lub thawj substrate rau phosphating
Cov xwm txheej hlau ua thawj phosphating substrate stems los ntawm nws cov chaw muaj peev txheej thiab sib xyaw nrog cov txheej txheem. Hauv qab no yog qhov tseem ceeb vim li cas nws outperforms lwm cov hlau.
Tshuaj lom neeg xws li cov hlau hauv phosphating
Hlau lub siab hlau cov ntsiab lus tsav muaj zog refeated nrog phospating daws teeb meem. Hlau dissibves los ntawm saum npoo, reacting nrog cov kua los ntawm phosphate ions los ua insoluble, zoo nkauj phosphleat.
Tsis zoo li tsis yog- ferrous hlau (Aluminium, tooj liab), hlau tsis ua ib txheej oxide uas thaiv phosphating. Hlau hlau ntxig (oxide txheej) tau yooj yim tshem tawm ntawm pre- kev kho mob hu rau qhov tshiab saum npoo rau cov txheej txheem qub.
Nyob rau hauv zinc phosphate phosphate, piv txwv li kev cuam tshuam steel ua kom nrawm nrawm, tseem ceeb} Kuv tseem ceeb rau qhov xav tau tuab thiab zoo.
NEEG KHO TSHUAB ZOG THIAB DAB TSIS NTAWM COV HLAU SUBTREST
Hlau zoo heev txhua yam muaj zog thiab kav ntev, txhim kho los ntawm phosphating, haum cov kev siv. Nws tiv thaiv kev tsim khoom / kev ntxhov siab hauv phosphate ntxiv ntxiv tiv thaiv hnav tiv thaiv hnav, thiab cuam tshuam.
Hauv kev tsim kho thiab cov tshuab hnyav, cov hlua khi hlau, cov txiv ntoo yas, thiab lub zog, thiab cov zog uas ua rau phosphating rau boost durability. Cov txheej ua raws li qhov teeb meem, txo kev sib txhuam / quab yuam - kev puas tsuaj. Piv txwv li, phosphated steel bolts hauv kev tsim kho tsis muaj peev xwm txeeb lossis tawg, kom muaj kev nyab xeeb kom nyab xeeb.
Nqi - ua hauj lwm zoo ntawm cov hlau rau phosphating kev siv
Tus nqi yog qhov tseem ceeb hauv kev lag luam, thiab hlau pheej yig ua nws nyiam. Kev pheej yig dua los tsim cov / yuav khoom dua li txhuas, titanium, lossis tooj liab, nws txiav cov nqi ntau lawm ntau lawm {}} qhov zoo tagnrho rau huab hwm coj ntau lawm.
Hlau cov txheej txheem phosphlating tseem yooj yim dua thiab pheej yig dua. Tsis muaj kev nyuaj ua ntej - kev kho lossis cov kev daws tshwj xeeb yog xav tau kev daws teeb meem, ntxiv txo cov nqi. Hauv kev lag luam automotive, tsheej lab ntawmphosphated steelCheebtsam Txhais lus rau cov nyiaj khaws cia, dhau mus rau cov neeg siv khoom rau cov neeg nqis nyiaj, cov khoom lag luam zoo.
Tau sib xyaw nrog ntau yam phosphating formulations
Steel ua haujlwm nrog ntau yam phosphating (hlau, zinc, manganese phosphate), cia cov tuam txhab xaiv xaiv raws li cov kev xav tau kev pab.
Iron phosphate phosphate yog tsawg {{{{0} Tus nqi}} Tus nqi nyias, thiab txhim kho cov nplaum nplaum thiab cov khoom siv hluav taws xob. Zinc phosphate phosphatating tsim cov tuab, corrosion - resistant txheej (automotive chaw tso tsheb hlau luam, roj tso tsheb hlau luam). Manganese phosphate phosphate yos cov ntoo ris {{5 5} {tiv taus, roj nplua nyeem -} Nrhiav cov txheej txheem (cov khoom plig, bearings).
Cov versatility no cia cov hlau pabcuam rau cov neeg siv khoom noj kom muaj cov cuab yeej muaj hnyav, ib qho tseem ceeb dua lwm cov substrates.
Cov txheej txheem phosphating rau cov txheej txheem hlau
Peb lub ntsiab lus phosphatating ua khaub ncaws hlau, txhua tus nrog cov cwj pwm sib txawv thiab siv.
Hlau Phosphate Phosphating Rau Hlau
Hlau phosphate phosphate yog qhov yooj yim thiab nquag, siv lub dilute phosphoric acid {}}} cov ntsev ntsev. Kev ua haujlwm ntawm chav tsev kub txog 60 degree, nws yuav siv 1-5 feeb.
Cov txheej txheem ua cov ntawv nyias nyias (0.1-1 μm), lub teeb - xim txheej. Txawm tias nyias, nws txhawb cov xim pleev xim / Lacquer adhesion, zoo tagnrho rau ua ntej-}}} nrhiav lub cev tsheb lub cev thiab cov khoom siv.
Cov txiaj ntsig tau suav nrog tus nqi qis (cov khoom siv yooj yim, chemical pheej yig) thiab yooj yim {{- kho pov tseg. Txawm li cas los xij, nws muaj tsawg standalone corrosion tsis kam, uas yuav tsum tau muaj Topcoat.
Zinc phosphate phosphate rau cov hlau
Zinc phosphate phosphate sivphosphoric acid, Zinc Salts, thiab accelerators (Nitrates, Chlorides). Kev ua haujlwm ntawm 40-80 degree, nws yuav siv sijhawm li 5-20 feeb, ua ib qho 1-10 μm grey / tsaus grey txheej.
Zoo heev adherent, nws muaj kev tiv thaiv corrosion txawm tias tsis muaj ib qho kev sib xyaw ua ke (kev tso tsheb nres tsheb ib puag ncig, cov tshuab roj av, cov tshuab ua liaj ua teb Nws kuj tseem txhim kho cov kev coj ua tsis kam, kev lom zem, bearings, thiab fasteners.
Qhov tsis zoo suav nrog tus nqi siab dua li hlau phosphate thiab zinc -}} muaj cov khib nyiab xav tau kev kho tshwj xeeb.
Manganese phosphate phosphate rau hlau
Manganese phosphate phosphate siv phosphoric acid, manganese salts, thiab accelerators. Kev khiav hauj lwm ntawm 80-100 degree, nws yuav siv sijhawm 10-30 feeb, ua ib 5-20 μm tsaus nti, txheej ntxeem tau.
Paub txog kev hnav tsis kam thiab lub ntsej muag, cov qauv ntxig khaws cov roj nplua nyeem (lub zog, camshaft, piston rings) hauv audotive, piston rings) hauv audotive, pistospace, thiab tshuab. Nws kuj tseem tiv thaiv corrosion hauv roj-} roj lubricated ib puag ncig.
It is the most expensive option, with high temperatures and long processing times limiting high-volume production.
Pre6 -}} kho cov kauj ruam rau hlau ua ntej phosphating
Ua ntej -}}}}}}}}}}}}} maj mam tshem tawm cov paug (roj, roj, xeb, nplai) kom ntseeg tau tias phosphating vam meej. Cov kauj ruam tseem ceeb ua raws.
Degreasing: tshem cov roj thiab roj los ntawm cov kab hlau
Roj thiab roj los ntawm kev tsim khoom (dov, machining) thaiv lub phosphating daws. Cov txheej txheem degrees suav suav nrog:
Hnyog degreasing: Siv cov kuab tshuaj organic (cov ntxhia pob zeb) rau cov roj hnyav tab sis muaj nuj nqis thiab pheej hmoo.
Alkaline Degreit: Nquag, siv 50 -80℃alkaline cov kev daws teeb meem (sodium hydroxide) kom tawg cov roj hauv rinseable compounds- Tus nqi estch yog tias tsis tuaj yeem tswj hwm.
Emulsion degreeze: Siv roj - dej {{1} {1} emulsifier sib tov rau lub teeb / nruab nrab roj, tsawg hnyav dua li alkaline txoj kev.
Txoj kev xaiv yog nyob ntawm cov kab mob kis / tus nqi, hom hlau, thiab kev xav tau ntau lawm.
Pickling: Raug tshem tawm xeb thiab teev los ntawm cov hlau
Rust (hlau oxide) thiab teev (kub - rolling / kev kho cua sov) tabkaum phosphatating. Pickling siv acidic daws teeb meem:
Hydrochloric acid: Nyiam, reacts sai sai nrog xeb / nplai, ua rau soluble ntsev, tsis muaj qhov seem.
Sulfuric acid: Pheej yig dua tab sis qeeb qeeb, tuaj yeem tsim cov ntsev insoluble uas yuav tsum tau yaug.
Pickling khiav ntawm chav tsev kub txog 50℃rau 5-30 feeb (raws li oxide tuab). Tshaj tawm -} pickling rinsing tshem tawm cov kua qaub / ntsev kom tsis txhob muaj cov teeb meem phosphatating.
Yaug: ua kom huv huv ntawm cov hlau substrates
Muab tshem tawm cov khoom seem / cov tshuaj lom uas tsis huv uas paug cov kev daws teeb meem no. Huv si txias / dej sov yog siv, ntau zaus nrog ntau cov tshuaj yaug. Qhov kawg deionized dej yaug tshem tawm tshem tawm cov ntxhia cov ntsev uas ua rau pom kev tsis xws luag.
Sov dej sov thiab siab {{{0} hill tshuaj tivtes ua hauj lwm efficiency, tab sis ntau dhau kev phom sij kev phom sij.
Kev Ua Kom Taus: Npaj Cov Khoom Hlau Rau Phosphats
Yeem tab sis pom zoo, ua kom siv cov tshuaj acidic / colloidal (titanium / zinc ntsev acid) los tsim cov tawv nqaij, recharive nto. Nws tshem tawm cov khaubncaws sab nraud oxide nyias thiab tsim cov khoom ua kom zoo nkauj rau kev hnav khaub ncaws, cov txheej txheem ua ntej.
Pab tau rau du cov hlau lossis cov chaw tshwm sim rau cua ntev - sij. Nws siv sijhawm li ob zaug mus rau ib feeb, ua raws li los ntawm kev yaug kawg.
Cov Kev Siv ntawm Steel Substrates nrog phosphating txheej
Phosphaated steel ua hauj lwm cov kev lag luam muaj kev lag luam ntau, siv zog txhim kho cov khoom.
Kev Lag Luam Automotive: Txhim Kho Cov Hlau Cheebtsam Nrog Phosphating
Kev lag luam automotive yog cov neeg siv khoom sab saum toj. Iron phosphate phosphating pre-treats body panels for better paint adhesion, reducing chipping and fading. Zinc Phosphate Cov tsho loj Underbodies thiab roj tso tsheb hlau luam rau corrosion tsis kam. Manganese phosphate kho cov chaw cav (camshafts, zog) kom txo kev sib txhuam thiab hnav, txuas ntxiv lub neej lub cav.
Aerospace kev lag luam: tseem ceeb siv ntawm phosphated steel
Hauv Aerospace, qhov kev ntseeg tau yog qhov tseem ceeb heev, fasteners steel Cheebtsam (cov av iav tiv thaiv kom deb ntawm qhov siab thiab qhov ntsuas kub. Zinc Phosphate tiv thaiv cov xwm txheej hnyav, thaum manganese phosphate ua kom muaj kev phom sij, kom muaj kev nyab xeeb rau kev nyab xeeb.
Kev Siv thiab Cov Tshuab Nkhaus
Siv kev siv cov kuab siv cov kab teeb meem, kab teeb, thiab cov qauv txheej txheem. Cov txheej tiv thaiv xeb xeb xeb ntawm huab cua thiab noo noo, tswj cov txheej txheem kev ntseeg. Cov Machinery (Excavators, tsoo tsheb sib tsoo ntawm phosphated zog thiab cov khoom siv tsis kam, txo kev txij nkawm thiab downtime.
Cov neeg siv khoom lag luam thiab cov khoom siv
Cov khoom siv hauv tsev neeg (tub yees, tshuab ntxhua khaub ncaws) siv phosphated stab vivriors. Hlau phosphate ua ntej -}} kev kho} Ua kom ua kom pom cov xim ua kom zoo nkauj, ua kom cov khoom siv nrhiav tshiab. Cov khoom siv me me (cov cuab yeej, kho vajtse) tseem siv phosphating rau corrosion tsis kam, nthuav dav khoom lub neej.
Cov kev sib tw thiab yav tom ntej cov ncauj lus hauv cov hlau phosphatating
Cov kev sib tw tam sim no hauv cov hlau phosphating
Kev txhawj xeeb ib puag ncig yog qhov kev sib tw loj. Tsoos phosphating siv tshuaj (zinc, manganese) uas tsim cov khib nyiab lom, kom muaj kev kho kom kim. Cov kev txwv tswj cov khib nyiab pov tseg ntxiv rau cov nqi kev lag luam.
Lwm qhov kev sib tw yog cov txheej txheem ua haujlwm tau zoo. High -}} Cov txheej txheem kub (manganese phosphate) haus lub zog (pickling, rinsing) nce kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom muaj kev txhawj xeeb txog kev ua kom ntev.
Yav Tom Ntej: Kev Tawm Tsam Hauv Cov Hlau Phosphating
Txhawm rau daws cov kev sib tw, kev lag luam tab tom tsim eco - Tus phooj ywg zoo phosphating daws teeb meem. Tsawg - kub lossis chav -} txheej txheem kub txo cov txheej txheem siv zog. Chromium - dawb thiab hnyav - hlau} mi} dawb} Cov hlau dawb tsawg tsis txaus.
Digitalization tseem tab tom nthuav tawm - Smart Sensors Kev saib xyuas phospecters tshuaj xyuas (ph, ntsuas cov txheej txheem tswj hwm thiab txo cov kev tsis haum xeeb. Nanotechnology - Ua Ntej Txheej Txheem tau kawm los txhim kho cov txheej txheej ua tiav nrog cov txheej txheej nyias, txiav cov khoom siv.
Lub neej yav tom ntej ntawm phosphating tov
Steel yog undeniably feem ntau siv substrate rau phosphating, tsav los ntawm nwsTej Tshuaj Lom Zem, kev siv tshuab txhua yam, tus nqi {- ua tau zoo, thiab kev sib raug zoo nrog cov txheej txheem phosphatating sib txawv. Los ntawm Automotive lub cev Panels rau Aerospace rasteners, phosphated steel hloov khoom thiab kev lag luam nyob rau thoob plaws kev lag luam.
Thaum cov nyom zoo li kev cuam tshuam ib puag ncig thiab cov txheej txheem kev ua haujlwm hauv eco - Tus phooj ywg tsim qauv thiab cov lus cog tseg rau yav tom ntej rau cov lus sib xyaw ua ke. Raws li kev lag luam txuas ntxiv ua qhov tseem ceeb ua haujlwm thiab kev ruaj khov, cov tub ntxhais lub luag haujlwm hauv ntiaj teb kev tsim khoom lag luam xav tau ntau xyoo tom ntej.