Stainless hlaupaub txog nws cov kev tiv thaiv corrosion, tab sis nws tsis muaj kev tiv thaiv kom xeb. Stainless hlau tuaj yeem xeb nyob rau hauv qee qhov xwm txheej, thiab nkag siab tias vim li cas qhov no tshwm sim tuaj yeem pab tiv thaiv thiab tswj kev xeb.
Stainless hlau muaj chromium, uas ua rau nyias, passive oxide txheej ntawm nws nto thaum raug oxygen. Cov txheej oxide no, tseem hu ua "passive txheej," muab cov kev tiv thaiv corrosion uasstainless hlauyog nto moo rau.
Cov yam ntxwv cuam tshuam rau xeb ntawm stainless hlau:
Tshaj tawm chlorides
Mechanical puas
Tsis muaj Oxygen
Kev kis kab mob
Kub kub
Tsis zoo Stainless hlau
Hnyav Chemical Ib puag ncig
Hom Stainless Hlau Corrosion:
Muaj ntau hom stainless hlau corrosion. Txhua tus ntawm lawv nthuav tawm cov kev sib tw sib txawv thiab yuav tsum muaj kev sib txawv.
General corrosion- Nws yog qhov kev kwv yees tshaj plaws thiab yooj yim tshaj los daws. Nws yog characterized los ntawm ib tug uniform poob ntawm tag nrho cov nto.
Galvanic corrosion kuj- hom corrosion no cuam tshuam rau feem ntau cov hlau alloys. Nws yog hais txog ib qho xwm txheej uas ib qho hlau tuaj yeem sib cuag nrog lwm tus thiab ua rau ib qho los yog ob qho tib si rau ib leeg thiab corrode.
Pitting corrosion- nws yog ib qho chaw hauv cheeb tsam ntawm corrosion uas tawm kab noj hniav los yog qhov. Nws muaj ntau nyob rau hauv ib puag ncig uas muaj chlorides.
Kev txhim kho corrosion- kuj localized corrosion uas tshwm sim ntawm crevice ntawm ob qhov chaw sib koom. Nws tuaj yeem tshwm sim ntawm ob lub hlau lossis hlau thiab tsis yog hlau.
Tiv thaiv stainless hlau los ntawm xeb:
Ntxuav cov hlau tsis tu ncua kom tshem tawm cov kab mob thiab tswj nws cov txheej txheem tiv thaiv.
Tsis txhob tso cov hlau tsis muaj chlorides thiab cov tshuaj hnyav.
Tiv thaiv stainless hlau los ntawm kev puas tsuaj los ntawm kev siv cov txheej txheem tuav thiab khaws cia.
Xyuas kom muaj qhov cua kom zoo nyob rau hauv ib puag ncig uas cov hlau tsis muaj hlau siv los tswj cov qib oxygen.
Xaiv cov hlau zoo stainless hlau nrog cov hlau alloy tsim nyog rau daim ntawv thov.
Post lub sij hawm: Aug-11-2023