1.Dab tsi yog lub hauv paus ntsiab lus ntawm galvanic corrosion?
Thaum ob lub hlau sib txawv tau txuas nrog hluav taws xob hauv electrolyte (xws li huab cua ntub, dej, tshuaj tsuag ntsev, thiab lwm yam), lub galvanic cell yog tsim:
Anode (Sacrificial Electrode): Cov hlau uas muaj tshuaj lom neeg ntau dua, uas ua rau tawg sai dua.
Cathode (Protective Electrode): Cov hlau tsis tshua muaj tshuaj lom neeg, uas muaj kev tiv thaiv.
2.Dab tsi yog qhov zoo ntawm kev sib txuas stainless hlau coils thiab stainless hlau bolts?
Kev sib raug zoo ntawm Galvanic: Cov hlau muaj peev xwm ntawm ob qho tib si nyob ze, ua rau tsis muaj qhov tseem ceeb galvanic corrosion.
Corrosion Resistance: Zoo heev. Ob leeg cia siab rau ib zaj duab xis passivation (chromium oxide) ntawm lawv qhov chaw rau kev tiv thaiv corrosion, muab kev ua haujlwm zoo nyob hauv ntau qhov chaw.
Kev pheej hmoo: ruaj khov heev hauv cov tshuaj chloride-cov huab cua tsis muaj kev lag luam lossis thaj chaw nyob deb nroog. Txawm li cas los xij, nyob rau hauv cov chaw ntug dej hiav txwv lossis ib puag ncig uas muaj cov ntsiab lus chloride ion siab, xws li de-icing ntsev, cov yeeb yaj kiab ntawm cov hlau tsis zoo yuav raug puas tsuaj, ua rau crevice corrosion ntawm bolt seams. Txawm li cas los xij, nws qhov kev ua tau zoo tag nrho tseem nyob deb tshaj li lwm cov kev xaiv.
Xaus: Qhov no yog ib qho ntawm feem ntau siv thiab txhim khu kev qha kev xaiv, tshwj xeeb tshaj yog haum rau cov ntawv thov uas muaj kev tiv thaiv corrosion siab.
3.Dab tsi yog qhov cuam tshuam ntawm kev sib txuas stainless hlau coils nrog galvanized bolts?
Kev sib raug zoo Galvanic: Lub galvanized ntsia liaj qhov rooj (zinc) ua raws li lub anode, thiab stainless hlau kauj ua raws li cathode.
Corrosion Resistance: Tsis tshua muaj neeg pluag. Zinc txheej ntawm lub ntsia liaj qhov rooj yuav tsum tau noj sai heev raws li ib tug sacrificial anode, ua raws li sai sai corrosion ntawm steel bolt substrate, ua rau kev twb kev txuas tsis ua hauj lwm. Qhov loj cathode cheeb tsam ntawm cov hlau tsis muaj steel yuav ua rau kom ceev nrooj corrosion.
Xaus: Qhov kev sib xyaw no yuav tsum tau zam nruj me ntsis.
4.Dab tsi yog qhov cuam tshuam ntawm kev sib txuas galvanized coils thiab galvanized bolts?
Kev sib raug zoo Galvanic: Ob leeg muaj kev tiv thaiv los ntawm zinc txheej thiab muaj tib lub peev xwm, tiv thaiv kev puas tsuaj galvanic corrosion.
Kev Tiv Thaiv Corrosion: Zoo. Cov zinc txheej ntawm ob lub bolts thiab cov ntawv hlau muab kev tiv thaiv anodic tiv thaiv rau cov hlau substrate. Txawm hais tias zinc txheej yog khawb, cov zinc nyob ib puag ncig yuav tiv thaiv cov hlau raug.
Kev pheej hmoo: zinc txheej yuav maj mam corrode nyob rau hauv ib puag ncig hnyav (xws li kua qaub los nag thiab muaj kuab paug), ua rau muaj kev txwv tsis pub muaj sia nyob. Txawm li cas los xij, nws txoj kev tiv thaiv yog dav thiab kwv yees.
Xaus: Qhov no yog ib qho kev lag luam thiab kev daws teeb meem zoo rau cov cheeb tsam uas yuav tsum muaj kev tiv thaiv corrosion tsis tshua muaj zog.
5.Dab tsi yog qhov cuam tshuam ntawm kev sib txuas galvanized coils nrog stainless hlau bolts?
Kev sib raug zoo Galvanic: Lub galvanized kauj (zinc / steel) ua raws li anode, thiab stainless hlau ntsia liaj qhov rooj raws li cathode.
Corrosion Resistance: Qhov no yog qhov kev pheej hmoo siab - sib xyaw ua ke, tab sis ntau heev. Nws txoj kev ua tau zoo nyob ntawm ib puag ncig thiab thaj chaw txheeb ze ntawm cov hlau tsis muaj steel / galvanized steel.
Me Me Anode, Loj Cathode: Lub stainless hlau ntsia liaj qhov rooj (cathode) muaj ib cheeb tsam me me, thaum lub galvanized coil (anode) muaj thaj tsam loj. Qhov no ua rau tam sim no mloog zoo ntawm lub anode (qhov chaw nyob ib ncig ntawm lub qhov ntsia hlau ntawm lub galvanized kauj), ua rau kom ceev corrosion ntawm zinc txheej thiab steel substrate nyob rau hauv qhov chaw, ua rau perforation corrosion, uas yog heev teeb meem.
Environmental Factors: Kev pheej hmoo tsawg dua hauv qhov chaw qhuav; corrosion accelerates dramatically nyob rau hauv humid, ntsev tsuag ib puag ncig.