Covfastenerkev sib txuas yog ib feem ntawm lub dav hlau, thiab nws kuj yog ib qho tseem ceeb txuas ib feem ntawm lub dav hlau, thiab nws tseem tuaj yeem hu ua lub cim navigation ntawm lub dav hlau. Tom qab lub dav hlau fasteners disassembled, cov khoom siv corrosion tuaj yeem nkag mus rau hauv lub qhov ntawm cov fasteners, ua rau corrosion ntawm lub qhov phab ntsa thiab fasteners. Lub cheeb tsam ntawm cov hlau fasteners uas feem ntau disassembled thiab assembled yog tsis tshua muaj heev rau corrosion. Dab tsi yog qhov laj thawj tseem ceeb rau corrosion ntawm steel fasteners? Yuav ua li cas yog tias kev tiv thaiv kev tiv thaiv kev tiv thaiv raug coj mus rau steel fasteners?
1. Kev soj ntsuam ntawm cov laj thawj tseem ceeb rau corrosion ntawm steelfasteners
Daim duab 1 Corrosion ntawm fasteners tom qab disassembly
1) Cov txheej txheem kho saum npoo ntawm lub fastener muaj kev tiv thaiv corrosion tsis zoo. Tom qab kev soj ntsuam, nws tau pom tias corrosion tshwm sim feem ntau ntawm cov hlau fasteners nrog ib txoj kab uas hla ntawm 8 hli los yog tsawg dua. Cov bolts thiab gaskets ntawm no ib feem ntawm fasteners yog tsuas yog galvanized rau nto kho nyob rau hauv Tuam Tshoj. Cov txheej txheej galvanized tsis tsuas yog tsis zoo corrosion kuj nyob rau hauv marine ib puag ncig, tab sis kuj zoo li poob tawm tom qab disassembly thiab sib dhos.
2) Cov phab ntsa ntawm qhov fastener qhov tsis muaj kev tiv thaiv. Hauv kev tsim cov dav hlau, yog tias cov phab ntsa fastener tsis muaj kev tiv thaiv tshwj xeeb ntawm qhov chaw tiv thaiv, qhov nruab nrab corrosive yuav ncaj qha ua rau corrosion ntawm substrate.
3) Cov xim pleev xim rau saum npoo tsis ua haujlwm. Tom qab lub fastening kev twb kev txuas qauv yog disassembled, lub txheej ntawm lub fastener qhov thiab qhov sib koom nto deg. Yog tias tsis muaj kev tiv thaiv kev tiv thaiv zoo thaum rov txhim kho, qhov nruab nrab corrosive tuaj yeem nkag mus ncaj qha rau hauv lub qhov fastener thiab qhov sib koom ua ke, ua rau cov fasteners thiab lub qhov phab ntsa yog corroded, thiab nthuav tawm ntawm qhov fastener qhov mus rau lub cev qauv.
Yog li ntawd, rau kev tiv thaiv corrosion ntawm cheeb tsam ntawm cov hlau fasteners feem ntau disassembled, kev ua hauj lwm yuav tsum tau nqa tawm los ntawm peb yam: kev txhim kho ntawm qhov chaw kho mob ntawm fasteners, kev tiv thaiv ntawm lub qhov phab ntsa ntawm fasteners, thiab kev txhim kho. ntawm cov txheej txheem sib dhos.
2. Kev tiv thaiv corrosion rau steel fasteners
Raws li kev soj ntsuam ntawm cheeb tsam corrosion ua rau steel fasteners uas feem ntau disassembled thiab sib sau ua ke, thiab xa mus rau cov kev paub ntawm aircraft corrosion tiv thaiv tsim thiab kho nyob rau hauv tsev thiab txawv teb chaws, ib qho kev tiv thaiv corrosion txoj kev npaj yog tsim.
1) Txhim kho cov txheej txheem kho saum npoo ntawm fasteners. Raws li cov txiaj ntsig kev xeem, qhov kev tiv thaiv corrosion ntawm cadmium plating yog qhov zoo dua li cov txheej txheem galvanized nyob rau hauv ib puag ncig marine, yog li cov tshuab ntxhua khaub ncaws thiab bolts uas siv cov txheej txheem galvanized passivation tau hloov mus rau cadmium plated passivation txheej txheem rau kev kho saum npoo.
2) Kev tiv thaiv nto ntawm phab ntsa fastener. Rau lub qhov phab ntsa ntawm aluminium alloy qauv fastener yam tsis muaj kev kho deg, siv Alodin rau saum npoo, thiab tom qab ntawd thov ib txheej ntawm anti-corrosion primer; rau lub qhov phab ntsa ntawm cov qauv steel fastener yam tsis muaj kev kho deg, thov ib txheej ntawm phosphorus Primer.
3) Kev sib dhos ntub dej ntawm fasteners. Tom qab lub fastener qhov phab ntsa primer tau kho, cov fasteners yog ntub-them nrog roj. Roj sib dhos tsis tau tsuas yog ua lub luag haujlwm sealing los tiv thaiv qhov nruab nrab los ntawm kev nkag mus rau hauv qhov sib txawv, tab sis kuj yog cov fasteners yooj yim rau disassemble, uas yooj yim rau kev tsim kho.
4) Txhaj tshuaj tiv thaiv corrosion. Tom qab cov fasteners tau sib sau ua ke, ib txheej ntawm cov yeeb yaj kiab mos dej hloov chaw corrosion inhibitor yog txau rau ntawm qhov chaw ntawm qhov txuas txuas txuas. Corrosion inhibitors yog ib qho tseem ceeb ntawm kev tiv thaiv corrosion thiab tswj. Lawv muaj qhov zoo permeability thiab dej txav, thiab tuaj yeem nkag mus sai sai rau hauv qhov khoob hauv cov qauv dav hlau, tshem cov dej noo hauv qhov khoob thiab cov hlau hlau mus rau sab nraud, thiab cais cov hlau los ntawm cov dej noo. Nyob rau tib lub sijhawm, cov yeeb yaj kiab tiv thaiv tau muab tso rau ntawm qhov chaw hlau kom zoo ncua kev xeb ntawm cov ntaub ntawv hlau.
nyob rau hauv xaus:
1) Los ntawm kev siv cov kev tiv thaiv zoo rau kev tiv thaiv saum npoo thiab sib sau ua ke, nws tuaj yeem daws qhov teeb meem corrosion ntawm steel fastening txuas qhov chaw uas feem ntau disassembled thiab sib sau ua ke, thiab tuaj yeem nrov thiab siv hauv kev tsim thiab kho.
2) Kev tiv thaiv kev tiv thaiv xws li pleev xim rau phab ntsa ntawm qhov fastener thiab ntxiv tshuaj tsuag ntawm corrosion inhibitors tom qab sib dhos tuaj yeem siv rau kev siv hauv kev tiv thaiv corrosion tsim thiab kho lwm yam kev sib txuas.
