Cov hlau uas tiv taus kev xeb yog ib pawg tshwj xeeb ntawm cov hlau uas tsim los ua ke cov khoom siv thauj khoom, cov khoom siv tiv taus kev hnav ntawm cov hlau uas ib txwm muaj nrog kev tiv taus kev oxidation thiab corrosive media. Thaum kev lag luam thawb cov khoom siv mus rau hauv ib puag ncig hnyav dua—lub zog hauv hiav txwv, kev ua zaub mov, kev kho mob, tshuaj lom neeg, thiab lub zog rov ua dua tshiab—Cov qauv siab-carbon chromium bearings (piv txwv li, SAE 52100) tsis txaus lawm. Cov hlau bearing uas tiv taus corrosion ntev lub neej kev pabcuam, txo lub sijhawm tsis ua haujlwm thiab kev txij nkawm, thiab ua kom muaj kev ua tau zoo txhim khu kev qha qhov twg muaj dej noo, ntsev, kua qaub lossis cov neeg ua haujlwm ntxuav. Cov ntsiab lus ntawm cov khoom no piav qhia txog cov hom hlau bearing uas tiv taus corrosion tseem ceeb, kev txhim kho tshiab, thiab cov txiaj ntsig tseem ceeb uas ua rau lawv xaiv zoo tshaj plaws rau cov ntawv thov uas xav tau.
Cov hom hlau uas tiv taus corrosion poob rau hauv ntau pawg, txhua qhov tau zoo rau qhov sib npaug ntawm qhov nyuaj, kev tawv thiab kev tiv thaiv ib puag ncig. Cov hlau stainless hlau Martensitic bearing (piv txwv li AISI 440C thiab lwm yam X46Cr13 qib) yog siv dav qhov twg xav tau kev tawv thiab kev tiv thaiv xeb zoo; lawv tuaj yeem kho cua sov kom ua tiav lub neej ntev. Cov hlau stainless hlau uas ua rau nag lossis daus (17-4PH, 15-5PH) muab kev sib xyaw ua ke ntawm lub zog siab, kev tawv thiab kev tiv thaiv xeb tom qab lub sijhawm ua kom tawv, tsim nyog rau kev tsav dav hlau thiab kev lag luam bearings. Cov hlau stainless hlau Austenitic (piv txwv li, 316L, 304) muab kev tiv thaiv xeb zoo heev thiab siv qhov twg kev ua haujlwm xeb yog qhov tseem ceeb, txawm hais tias lawv feem ntau muab qhov nyuaj qis dua. Cov hlau alloys siab-nitrogen thiab cov hlau tshwj xeeb (Cronidur 30 thiab cov hlau uas muaj zog nitrogen zoo sib xws) muab kev ua haujlwm qaug zog thiab kev tiv thaiv xeb zoo dua. Cov hlau stainless hlau hmoov metallurgy (PM) muab kev huv si zoo dua, kev tswj hwm microstructure thiab kev sib xws rau cov ntawv thov tseem ceeb.
Kev txhim kho hauv cov hlau uas tiv taus xeb tau nrawm dua los ntawm kev tsim cov hlau sib xyaw, kev yaj thiab kev ua cov khoom tshiab, thiab cov thev naus laus zis tsim kho qhov chaw.Kev siv tshuab nqus tsev (VIM), electroslag remelting (ESR) thiab hmoov metallurgy niaj hnub no txo cov khoom tsis muaj thiab ua kom huv si, ua kom lub neej ntev dua. Kev sib xyaw ua ke nrog cov nitrogen ntau thiab cov chromium, molybdenum thiab nickel sib npaug zoo ua rau cov zaj duab xis passive muaj zog dua thiab tiv taus pitting zoo dua. Kev kho cua sov thiab kev ua cryogenic ua kom zoo dua cov qauv martensitic kom ruaj khov thiab ruaj khov. Ntawm sab saum npoo, kev siv plasma nitriding kub qis, PVD/DLC coatings, thiab cov ceramic lossis polymer liners nyias tuaj yeem txhim kho kev tiv thaiv kev hnav yam tsis muaj kev cuam tshuam rau kev tiv thaiv corrosion. Kev tsim cov hlau sib xyaw ua ke thiab kev kuaj xeb-qaug zog sai dua rau cov ntawv thov tshiab.
Qhov zoo thiab kev ua tau zoo ntawm cov hlau tsis kam tiv taus corrosion txhais tau tias muaj txiaj ntsig zoo rau cov khoom siv thiab cov kab ke. Cov ntaub ntawv no txo qhov kev pheej hmoo ntawm hydrogen embrittlement thiab pitting nyob rau hauv saline lossis tshuaj lom neeg ib puag ncig, thaum tswj kev sib cuag lub zog thiab kev tiv thaiv kev hnav uas xav tau rau cov ntsiab lus dov thiab kev sib tw. Kev saib xyuas qis dua thiab kev siv roj tsawg dua lossis hloov pauv txo cov nqi siv lub neej.—tseem ceeb rau kev teeb tsa hauv hiav txwv, kev ua zaub mov thiab kev kho mob. Ntau qib sib xws nrog cov qauv kev huv (piv txwv li, FDA / USP) tom qab ua tiav zoo, ua rau lawv haum rau kev siv huv. Tsis tas li ntawd, muaj nyob rau hauv kev kho cua sov tshwj xeeb, kev ua tiav meej thiab cov khoom PM ze-net-puab ua rau cov neeg tsim qauv los txhim kho cov bearings rau qhov hnyav, suab nrov, thiab kev ua haujlwm zoo thaum luv lub voj voog sib dhos.
Hauv kev xaus lus, cov hlau uas tiv taus xeb sib xyaw ua ke cov kev tsim kho tshiab hauv kev lag luam hlau thiab kev ua haujlwm niaj hnub los xa cov bearings uas ntseeg tau, lub neej ntev uas ua haujlwm qhov twg cov hlau ib txwm ua tsis tiav. Lawv cov txiaj ntsig tseem ceeb—txhim kho kev tiv thaiv corrosion, kev ruaj khov thiab lub zog qaug zog, txo kev txij nkawm, thiab kev siv tau thoob plaws qhov chaw tswj hwm thiab chaw nyob hnyav—ua rau lawv yog qhov kev xaiv zoo rau cov engineers thiab cov kws tshaj lij kev yuav khoom uas tab tom nrhiav kev ntseeg siab thiab txo tus nqi tag nrho ntawm kev muaj. Xaiv peb cov kev daws teeb meem hlau bearing uas tiv taus corrosion rau kev xaiv cov khoom siv kws tshaj lij, kev tsim khoom raug, thiab kev hloov kho raws li qhov xav tau.
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Lub sijhawm tshaj tawm: Lub Ob Hlis-25-2026