Yuav Ua Li Cas Tiv Thaiv Corrosion Ntawm Hoisting Machinery?

Yuav tiv thaiv Corrosion ntawm Hoisting Machinery li cas?

Nyob rau hauv xyoo tas los no, nrog rau txoj kev loj hlob ntawm kuv lub teb chaws txoj kev tsim engineering, hoisting machinery tau dhau los ua ntau thiab siv ntau dua hauv kev tsim khoom niaj hnub xws li nkoj, aerospace, hluav taws xob, cov khoom siv hauv paus, metallurgy, txuas hniav thiab railways.
 

Qhov nce ntawm cov cranes tau coj lub sijhawm rau cov tuam txhab tsim khoom, tab sis kuj muaj ntau yam kev sib tw. Raws li cov ntaub ntawv pov thawj, thaum tus naj npawb ntawm cranes tau nce xyoo los ntawm lub xyoo, tus naj npawb ntawm cov cranes uas tau muab tshem tawm thiab muab pov tseg txhua xyoo kuj nce ntxiv, thiab ntau dua 80 feem pua ​​​​ntawm cov cranes tau muab pov tseg vim yog qhov tsis ua haujlwm ntawm lawv cov hlau. .
 

Vim muaj kev siv ntau zaus ntawm kev siv lub tshuab nqa thiab qhov chaw ua haujlwm hnyav, lawv feem ntau muab tso rau hauv qhov chaw qhib lossis hauv qhov chaw ntub thiab corrosive. Kev tiv thaiv cov xim pleev xim rau ntawm qhov chaw ntawm lub crane feem ntau poob nws txoj haujlwm tiv thaiv vim kev puas tsuaj, ua rau cov qauv hlau raug corroded.
 

Muaj ob qhov xwm txheej ntawm gantry cranes vim yog qhov hnyav hnyav ntawm cov khoom tseem ceeb ntawm kev ntxhov siab, thiab lub tsev siv tau ua txhaum txoj cai thiab yuam kom overloaded, uas ua rau muaj kev puas tsuaj rau cov qauv hlau thiab kev sib tsoo nrog lub tshuab sib tsoo thiab cov neeg tuag. Noj Tebchaws Meskas, ib lub tebchaws tsim, ua piv txwv, raws li kev txheeb cais, ntau tshaj 50 tus neeg raug tua nyob rau hauv crane xwm txheej txhua xyoo. Lub corrosion ntawm hlau qauv cov ntaub ntawv ntawm lifting machinery tsis tsuas yog yooj yim ua rau kev nyab xeeb xwm txheej, tab sis kuj ua rau loj loj pov tseg ntawm cov ntaub ntawv hlau.
 

Tshooj 3.9 ntawm GB6067.

Thaum lub corrosion ntawm seem ntawm lub ntsiab quab yuam-kev coj tus kheej nce mus txog 10 feem pua ​​​​ntawm cov qauv tsim, yog tias nws tsis tuaj yeem kho, nws yuav tsum tau muab pov tseg.

Nws tuaj yeem pom tias nyob rau hauv ib puag ncig hnyav, yuav ua li cas txhawm rau txhim kho corrosion ntawm cov qauv hlau ntawm lub crane thiab txo lub zog siv ntawm crane yog ib qho teeb meem ceev uas yuav tsum tau daws.

Corrosion cwj pwm thiab ua rau kev soj ntsuam ntawm cov qauv hlau ntawm hoisting machinery

Lub ntsiab nqaj thiab lwm yam tseem ceeb ntawm lub crane feem ntau yog ua los ntawm cov pa roj carbon zoo tib yam Q235, thiab cov khoom tseem ceeb ntawm cov khoom siv crane hlau yog tsim los siv Q235B, Q235C, thiab Q235D. Rau cov qauv hlau dav dav ntawm lub crane, thaum qhov ntsuas kub tsis yog Thaum nws qis dua -25 degree, nws raug tso cai siv boiling steel Q235F.

Rau cov ntaub ntawv zoo tib yam carbon steel corrosion tuaj yeem muab faib ua cov txheej txheem corrosion, qhov corrosion thiab intergranular corrosion. Uniform corrosion tsis tshua muaj teeb meem. Txij li cov hlau Cheebtsam muaj qee qhov sib txawv me me, me ntsis corrosion kuj feem ntau tsis txo qis cov khoom siv ntawm cov hlau. Tab sis rau lub thawv-zoo li tus qauv hlau (lub thawv-zoo li kab teeb, lub thawv-zoo li tus outrigger, lub thawv-zoo li tus caj npab, thiab lwm yam) ACIDENT.
 

Pore ​​corrosion thiab intergranular corrosion yog corrosions uas tshwm sim ntawm ib cheeb tsam hauv lub cev hlau. Ob hom kev xeb no yuav txo qhov cuam tshuam ntawm thaj chaw zoo ntawm cov khoom tivthaiv thiab ua rau cov khoom tawg sai sai. Ob hom kev coj tus cwj pwm corrosion no muaj kev phom sij ntau dua.
 

Cov kev tshawb fawb pom tau hais tias intergranular corrosion feem ntau yog tshwm sim los ntawm cov residual kev nyuaj siab nyob rau hauv cov khoom los yog cov kev nyuaj siab los ntawm sab nraud, uas ua rau kom muaj kev sib koom ua ke ntawm kev ntxhov siab, lim thiab corrosion ntawm cov khoom thiab ua rau kom muaj kev sib koom ua ke ntawm kev nyuaj siab, kev nyuaj siab thiab corrosion ntawm cov khoom.kev puas tsuaj. Hom kev xeb no ua rau muaj qhov tshwm sim loj heev ntawm kev puas tsuaj thiab tsis ua haujlwm ntawm cov qauv hlau.
 

Cov txheej txheem corrosion ntawm hlau qauv ntawm hoisting machinery feem ntau yog tshuaj corrosion thiab electrochemical corrosion.
 

Tshuaj corrosion yog hais txog kev puas tsuaj ntawm cov ntaub ntawv uas tshwm sim los ntawm ncaj qha ntshiab tshuaj corrosion ntawm cov ntaub ntawv thiab tsis-conductive media, thaum electrochemical corrosion yog feem ntau thiab tseem ceeb hom corrosion ntawm hlau cov ntaub ntawv los ntawm electrochemical tshuaj. Raws li ib txwm muaj, cov qauv steel ntawm hoisting machinery feem ntau ua rau xeb ntawm qhov chaw. Tab sis nyob rau hauv cov ntaub ntawv ntawm qhov kub thiab txias, steel qauv yog ib qho yooj yim los tsim oxide nplai. Tsis tas li ntawd, cov hlau yog feem ntau ua rau cov pa roj ntawm qhov kub thiab txias, thiab cov roj tsim tawm khiav tawm ntawm cov hlau, thiab cov txheej txheem decarburization yog tsim nyob rau saum npoo ntawm cov qauv steel, uas cuam tshuam rau kev ua haujlwm ntawm lub tshuab nqa.
 

Nyob rau hauv ib puag ncig hnyav, nws yog ib qho yooj yim kom ua tau raws li peb yam tsim nyog rau electrochemical corrosion: qhov muaj peev xwm sib txawv, cov tshuaj electrolyte, thiab kev sib cuag. Ntev npaum li cov xwm txheej saum toj no tau ntsib tib lub sijhawm, electrochemical corrosion tuaj yeem tsim, yog li rhuav tshem cov qauv hlau ntawm lub tshuab nqa.

Kev tshuaj xyuas ntawm kev tiv thaiv rau cov qauv hlau ntawm hoisting machinery

Tam sim no, txoj kev tiv thaiv corrosion ntawm crane hlau cov qauv feem ntau suav nrog cov qauv hlau txheej txheej txheej txheem thiab kev tiv thaiv kev txi anode.
 

Txoj kev sacrificial anode tiv thaiv feem ntau yog ntxiv cov fillers (xws li zinc) uas muaj zog dua hlau rau cov xim. Los ntawm lub hauv paus ntsiab lus ntawm electrochemical, lub sacrificial anode tuaj yeem tiv thaiv cov qauv hlau los ntawm corrosion. Txawm hais tias txoj kev no tsis tas yuav muaj hluav taws xob sab nraud, nws muaj kev phom sij rau corrosion. Qhov zoo ntawm cov txheej yog siab heev, thiab cov hlau tsis muaj hlau yuav raug siv tib lub sijhawm, thiab cov anode yuav tsum tau hloov tsis tu ncua, uas yog kim thiab nyuaj.
 

Txoj kev txheej txheej saum npoo feem ntau muab faib ua ob hom: corrosion-resistant hlau npog txoj kev thiab tsis yog hlau npog txoj kev. Corrosion-resistant hlau npog txoj kev feem ntau muaj xws li electroplating txoj kev, cladding txoj kev, kub-dip txoj kev, permeation plating txoj kev, txau txoj kev, thiab lwm yam. Cov txheej txheem yuav tsum tau ntawm cov txheej txheem no siab, siab nqi, haum rau me me workpieces, tab sis rau loj-scale lifting. machinery uas tau muab tso rau hauv kev siv tswv yim, nws yog dhau mus txog ntawm cov txheej txheem saum toj no, yog li nws tsis tau siv dav.
 

Txoj kev uas tsis yog-hlau npog yog siv cov txheej txheem los tiv thaiv xeb ntawm cov hlau nto. Txoj kev no tsis tshua muaj nqi thiab yooj yim rau kev khiav lag luam, thiab yog siv dav hauv crane los tiv thaiv corrosion. Txawm li cas los xij, ib zaj duab xis xim tsis tuaj yeem tiv thaiv kom tsis txhob ya raws thiab oxygen nkag mus rau hauv cov hlau nto, uas yuav ua rau kev laus thiab kev puas tsuaj. Tsis tas li ntawd, qhov sib txawv ntawm cov txheej txheem ntawm kev pleev xim kuj yuav ua rau cov xim tsis ua kom muaj kev tiv thaiv zoo rau lub sijhawm ntev.