Hauv kev ua haujlwm ntawm kev ua hlau, tooj yog cov khoom siv uas nquag siv vim nws txoj kev ua tau zoo, thermal conductivity, thiab ductility. Txawm li cas los xij, tooj liab yog nquag mus rau oxidation nyob rau hauv huab cua, sib sau ib tug nyias oxide zaj duab xis uas ua rau txo qis hauv kev ua tau zoo. Txhawm rau txhim kho lub zog antioxidation ntawm tooj liab, ntau txoj hauv kev tau ua haujlwm, ntawm kev siv tooj liab passivation daws teeb meem los ua cov tshuaj lom neeg zoo. Kab lus no yuav piav ntau ntxiv ntawm txoj kev ntawm tooj liab antioxidation siv tooj liab passivation daws.
I. Cov ntsiab cai ntawm tooj liab Passivation daws
Tooj liab passivation daws yog cov neeg sawv cev tshuaj lom neeg uas ua rau cov neeg tooj liab ruaj khov nyob saum npoo tooj liab thiab oxygen, yog li ua tiav antioxidation.
Ii. Txoj kev ntawm tooj liab antioxidation
Kev ntxuav tu: pib los ntawm kev ntxuav lub tooj liab kom tshem tawm cov hluav taws xob saum npoo xws li roj thiab plua plav, kom muaj kev sib txuas lus passivation tuaj yeem tiv toj rau cov tooj liab.
Soaking: Raus yog cov tshuaj ntxuav kom huv rau hauv kev daws teeb meem, feem ntau xav tau rau cov kev daws teeb meem kom huv si lub tooj liab. Tswj kub thiab sijhawm thaum lub sij hawm so kom tsis txhob suboptimal oxidation cuam tshuam vim kev ua haujlwm sai sai lossis qeeb qeeb.
Thov: Tso cov tooj liab lim hauv cov dej huv kom yaug tawm ntawm cov khoom seem uas passivation thiab impurities. Thaum muab yaug, saib seb tooj liab sab yog huv, thiab rov ua cov txheej txheem yog tsim nyog.
Kom qhuav: Tso cai rau cov tooj liab rinsed rau hauv qhov chaw cua ua kom qhuav lossis siv qhov cub kom ziab.
Tshuaj Xyuas: Ua kev sim tshuaj antioxidation kev sim ntawm cov tooj liab qhuav.
III. Cov kev ceev faj
Nrhav ua raws cov kws ua ntu zus thaum npaj cov kev daws teeb meem uas tsis muaj kev cuam tshuam rau kev kho mob ntau dhau los.
Tswj qhov kub khov kho thaum sov so thaum muaj kev sib txawv los tiv thaiv kev hloov pauv uas tuaj yeem ua rau cov yeeb yaj kiab oxide tsis zoo.
Zam txhob khawb lub tooj liab saum npoo thaum ntxuav thiab yaug los tiv thaiv ib qho kev tsis sib haum xeeb ntawm passivation ua hauj lwm zoo.
Lub Sijhawm Post: Jan-30-2024