Electrochemical Corrosion thiab kev tiv thaiv ntawm Fastener Hlau Cheebtsam nyob rau hauv Stray Current
Q1: Yuav ua li cas stray tam sim no ua rau electrochemical corrosion ntawm fastener hlau Cheebtsam?
A1: Thaum cov stray tam sim no ntws mus rau hauv av los ntawm cov ntsia hlau thiab fasteners, corrosion micro- roj teeb ntawm cov hlau -electrolyte (dej, moist concrete) interface. Hlau Cheebtsam nyob rau hauv lub anode cheeb tsam poob electrons thiab yaj mus rau hauv xeb, ua rau pitting, uniform thinning thiab spalling. Ntau dua stray tam sim no ceev, cov av noo ntau dua thiab zoo dua cov av conductivity accelerate tus corrosion, uas yog ob peb mus rau kaum ob lub sij hawm sai dua ntuj corrosion.
Q2: Dab tsi yog qhov txawv ntawm corrosion morphology thiab tsis ua hauj lwm ntawm cov clips, bolts thiab lub tes tsho?
A2: Clips raug rau huab cua thiab dais kev vibration kev nyuaj siab, feem ntau raug kev txom nyem pitting thiab spalling. Corrosion pits ua rau kev ntxhov siab concentration thiab txo qaug zog lub zog, ua rau corrosion qaug zog tawg. Bolts dais tensile kev nyuaj siab, nrog corrosion tshwm sim ntawm threads thiab haum chaw, nws muaj kev nyuaj siab corrosion cracking thiab sai sai tsis ua hauj lwm. Lub tes tsho hauv cov pob zeb ua rau tsis sib xws sab nraud corrosion thiab nthuav dav, ua rau lub tes tsho xoob thiab pw tsaug zog tawg, uas yog qhov tsis ua haujlwm nrog kev kho siab.
Q3: Yuav ua li cas taug qab ib puag ncig ib puag ncig ua kom nrawm nrawm tam sim no corrosion?
A3: Ua ntej, av noo, nag thiab ntug hiav txwv ntsev pos huab cheeb tsam uas muaj electrolyte conductivity. Qhov thib ob, qhov tunnels thiab underground seem nrog cov dej tsis zoo thiab ntev - lub sij hawm dampness. Thib peb, ntu nrog cov pob zeb qias neeg thiab cov hmoov mortar uas yooj yim rau kev khiav tawm tam sim no. Fourthly, trunk railways nrog hnyav traction load thiab siab ceev ceev. Fifthly, ntu nrog cov hnub nyoog thiab kev puas tsuaj ntawm rwb thaiv tsev ua rau tsis zoo rov qab thiab ua rau muaj kev cuam tshuam tam sim no.
Q4: Vim li cas corrosion qaug zog ua rau lub neej nrawm dua li cov ntshiab electrochemical corrosion?
A4: Ntshiab corrosion tsuas yog ua rau cov khoom poob nrog lub neej qeeb qeeb; corrosion qaug zog tshwm sim los ntawm kev sib xyaw ntawm corrosive nruab nrab thiab alternating vibration kev nyuaj siab. Corrosion ua pits raws li qhov chaw tawg; alternating kev nyuaj siab accelerates tawg propagation; Cov khoom siv corrosion kuj nkag mus rau hauv cov lus qhia tawg kom nrawm nrawm dua. Yog li ntawd, corrosion fatigue fracture feem ntau tsis muaj qhov pom tseeb nrog lub voj voog luv luv, ua rau muaj kev hem thawj rau kev nyab xeeb tsheb.
Q5: Yuav ua li cas los tsim kom muaj kev tiv thaiv tiav los ntawm kev tsim, khoom siv thiab kev ua haujlwm?
A5: Nyob rau hauv kev tsim, ntxiv dag zog rau traction backflow system, optimize thaiv, txhim kho kev khiav rwb thaiv tsev thiab txhim kho cov kua dej kom txo tau stray tam sim no. Nyob rau hauv cov khoom, txais yuav kub-dip galvanizing, Dacromet thiab lwm yam ntev -lub sij hawm los tiv thaiv-corrosion txheej rau clips thiab bolts; siv stainless hlau lossis los tiv thaiv - lub tes tsho corrosion. Hauv kev ua haujlwm, tsis tu ncua taug qab cov peev txheej hauv av thiab qhov tsis sib xws tam sim no; tshuaj xyuas corrosion thiab hloov cov khoom tawg loj heev; kho cov rwb thaiv tsev puas, huv si ballast thiab tswj cov kua dej kom tshem tawm electrochemical corrosion.