1.Dab tsi yog qhov feem ntau thiab qhov tseem ceeb ntawm corrosion (xeb)?
Tsawg zog thiab nruj: Corrosion yog txheej txheem ntawm cov khoom siv. Thaum xeb (hlau oxide) tsim rau saum npoo ntawm cov hlau, cov khoom siv tau zoo-cov kabmob hlau hla- ntu ntus, qhov thiab cov kab nrib pleb, ncaj qha ua rau txo qis ntawm cov khoom tensile, lub zog tawm los, thiab nruj.
Deterioration of Toughness: Cov ntsiab lus xeb, tshwj xeeb tshaj yog hauv qab ntawm pitting corrosion, ua cov ntsiab lus kev ntxhov siab. Raws li kev cuam tshuam lossis kev thauj khoom, cov kab nrib pleb yooj yim pib los ntawm qhov no thiab nthuav tawm sai, ua rau cov khoom hloov pauv ntawm "kab tawg tawg" mus rau qhov txaus ntshai "nkig tawg."
Lub Neej Txo Kev Nyuaj Siab: Nyob rau hauv lub voj voog thauj khoom (xws li rov vibration ntawm lub rooj zaum lub rooj zaum), cov qhov corrosive ua raws li cov kab nrib pleb, ua kom cov txheej txheem qaug zog heev, ua rau lub neej ua haujlwm ntawm qhov chaw nyob deb ntawm qhov kev xav tau tsim.
Poob ntawm Cov Khoom Ntog: Cov nplaim du, tiaj tus yog puas, cuam tshuam rau qhov zoo thiab adhesion ntawm kev ua tom ntej (xws li vuam thiab pleev xim).
2.Nws ua haujlwm li cas thaum lub sijhawm deformation?
Thaum lub sij hawm txias dov, residual stress thiab dislocations nyob rau hauv cov hlau. Thaum khaws cia rau hauv chav tsev kub lossis kub me ntsis rau lub sijhawm ntev, carbon thiab nitrogen atoms maj mam diffuse rau hauv cov dislocations thiab "pin" lawv nyob rau hauv qhov chaw.
Cov txiaj ntsig: Lub zog tawm ntawm cov hlau nce me ntsis, tab sis nws cov plasticity thiab toughness txo qis (ua nkig). Qhov no ua rau muaj kev phom sij heev rau kev khoov tom ntej, stamping, thiab lwm yam txheej txheem, thiab tuaj yeem ua rau tawg.
3.Dab tsi yog cov cim ntawm kev qaug zog thaum ua haujlwm?
Txawm hais tias tsis muaj kev cuam tshuam pom tseeb, kev cuam tshuam ntev rau kev hloov pauv kev ntxhov siab (xws li rov ua dua ntawm cov khoom siv tshuab) yuav maj mam ua rau microcracks tsim thiab nthuav tawm hauv cov khoom siv.
Kev tshwm sim: Qhov no nws thiaj li ua rau qaug zog tawg, ib qho kev puas tsuaj tam sim ntawd tshwm sim thaum qhov kev ntxhov siab qis dua cov khoom siv lub zog zoo li qub, thiab yog qhov txaus ntshai heev.
4.Dab tsi yog qhov cuam tshuam ntawm kev laus ntawm kev ua haujlwm ntawm cov khoom kawg?
Kev pheej hmoo ntawm kev nyab xeeb: Yog tias txias- dov coils siv los ua kev txhawb nqa sab hauv lossis cov khoom sib txuas xeb, lawv cov load-cov kabmob muaj peev xwm txo qis, uas ua rau muaj kev xav tsis zoo los yog tawg ntawm lub rooj zaum hauv qab lub log, cuam tshuam ncaj qha rau cov neeg siv kev nyab xeeb.
Txo kev cia siab rau kev ua haujlwm: Cov khib nyiab xeb tuaj yeem poob rau hauv cov bearings, pob khawm, thiab lwm yam, ua rau jamming, txawv txav, thiab ceev hnav.
Cov teeb meem kev nyiam huv thiab kev zoo nkauj: Cov xeb ua paug rau ib puag ncig thiab yog qhov tsis zoo heev, ua tsis tau raws li qhov yuav tsum tau ua kom huv ntawm cov khoom siv kho mob.
Cov nqi kho mob ntxiv: Cov khoom qub qub yuav tsum tau kuaj xyuas thiab hloov ntau zaus.
5.Yuav ntsuas thiab ncua kev laus li cas?
Txoj kev ntsuam xyuas:
Kev soj ntsuam pom: Tshawb xyuas cov xeb liab, xeb dawb (galvanized txheej corrosion), thiab pitting.
Kev Ntsuas Thickness: Siv lub ntsuas tuab los sib piv qhov chaw corroded nrog cov tuab tuab thiab suav tus ntoo khaub lig-sectional poob tus nqi.
Mechanical Property Testing: Ua qhov tensile, dabtsi yog khoov, thiab kev ntsuam xyuas cuam tshuam ntawm cov qauv los ntsuas thiab sib piv cov kev poob haujlwm.
Kev Ntsuam Xyuas Kev Ua Haujlwm: Kev tshuaj xyuas metallographic los soj ntsuam kev hloov pauv ntawm microstructure, thiab kev sim qaug zog los ntsuas qhov seem ntawm lub neej.
Cov Ntsiab Cai Tseem Ceeb kom ncua Kev Laus:
Kev tiv thaiv saum npoo yog cov kauj ruam tseem ceeb tshaj plaws: Kho cov khaub thuas txias- dov coils nrog galvanizing (galvanized kauj), txau, pleev xim, lossis hmoov txheej kom cais lawv ntawm kev sib cuag nrog oxygen thiab noo noo. Hauv siab - qhov yuav tsum tau muaj xws li daim ntawv thov kev kho mob, txheej txheej yuav tsum siab heev.
Cov khoom siv kho dua tshiab: Siv cov huab cua los yog cov ntawv galvanized ua cov khoom siv hauv paus, uas nws qhov kev tiv thaiv corrosion yog qhov zoo tshaj qhov txias txias -rolled coils.
Rational Design and Storage: Tsis txhob tuag cov ces kaum nyob rau hauv cov qauv tsim uas yog nquag mus rau tsub zuj zuj ntawm dej. Cov khoom siv raw yuav tsum muab cia rau hauv qhov chaw qhuav, qhov cua nkag.
Kev tu tsis tu ncua: Ntxuav thiab tshuaj xyuas cov khoom tiav, thiab kho tam sim ntawd cov txheej txheem puas lawm.