Rolling bearing cov ntaub ntawv muaj xws li cov ntaub ntawv rau dov bearing qhov chaw thiab tawb, rivets thiab lwm yam khoom pab.

Rolling bearings thiab lawv qhov chaw feem ntau yog ua los ntawm steel.Rolling bearing steels feem ntau yog high-carbon chromium steel thiab carburized steel.Nrog rau txoj kev loj hlob ntawm kev tshawb fawb niaj hnub thiab thev naus laus zis thiab kev siv cov dov bearings ntau ntxiv, cov kev xav tau ntawm cov bearings tau nce siab dua, xws li kev ua haujlwm siab, lub neej ntev thiab kev ntseeg siab.Rau qee lub hom phiaj tshwj xeeb, cov khoom siv bearings kuj yuav tsum muaj cov khoom ntawm qhov kub thiab txias, tiv thaiv corrosion, tsis muaj hlau nplaum, kub kub, thiab hluav taws xob tiv thaiv.Tsis tas li ntawd, cov khoom siv bearing kuj suav nrog cov khoom siv hlau, cov hlau tsis muaj hlau thiab cov khoom tsis yog hlau.Tsis tas li ntawd, bearings ua los ntawm cov ntaub ntawv ceramic yog tam sim no siv nyob rau hauv locomotives, tsheb, subways, aviation, aerospace, tshuaj thiab lwm yam teb.

Cov kev cai yooj yim ntawm dov bearings rau cov ntaub ntawv yog nyob ntawm qhov loj ntawm kev ua haujlwm ntawm cov kabmob.Seb qhov kev xaiv ntawm cov ntaub ntawv rau dov bearings yog tsim nyog yuav muaj kev cuam tshuam zoo rau nws cov kev ua tau zoo thiab lub neej.Feem ntau, cov ntaub ntawv tsis ua hauj lwm tseem ceeb ntawm dov bearings yog qaug zog spalling nyob rau hauv qhov kev txiav txim ntawm alternating kev ntxhov siab, thiab poob ntawm bearing raug vim kev sib txhuam thiab hnav.Tsis tas li ntawd, kuj muaj cov kab nrib pleb, indentations, xeb thiab lwm yam uas ua rau kev puas tsuaj rau cov kabmob.Yog li ntawd, dov bearings yuav tsum muaj kev tiv thaiv zoo rau cov yas deformation, tsis muaj kev sib txhuam thiab hnav, kev sib hloov tau zoo, qhov tseeb qhov tseeb thiab ruaj khov, thiab kev sib cuag ntev lub neej.Thiab ntau yam khoom yog txiav txim siab los ntawm cov khoom siv thiab cov txheej txheem kho cua sov.

Txij li cov kev cai yooj yim rau cov ntaub ntawv ntawm dov bearings yog txiav txim siab los ntawm daim ntawv ntawm kev puas tsuaj ntawm cov bearings, cov ntaub ntawv uas yuav tsum tau los tsim rolling bearings yuav tsum muaj cov khoom nram qab no tom qab kev kho cua sov hauv cov txheej txheem tom ntej:

Lub zog tiv taus qaug zog

Kev tiv thaiv kev qaug zog tsis ua haujlwm yog daim ntawv tseem ceeb ntawm kev coj tus kheej tsis ua haujlwm.Thaum lub rolling bearing nyob rau hauv lub lag luam, lub ntsiab dov dov ntawm cov raceways ntawm lub puab thiab sab rings ntawm cov kabmob, thiab qhov chaw sib cuag bears ib ntus alternating loads, uas muaj peev xwm ncav cuag ntau pua txhiab zaus ib feeb.Nyob rau hauv qhov rov ua dua ntawm kev sib hloov kev ntxhov siab, qhov chaw sib cuag Fatigue peeling tshwm sim.Thaum cov kabmob dov pib tev tawm, nws yuav ua rau cov kabmob vibration thiab nrov nrov, thiab kev ua haujlwm kub yuav nce siab, ua rau cov kabmob puas.Hom kev puas tsuaj no hu ua hu rau qaug zog puas tsuaj.Yog li ntawd, cov hlau rau dov bearings yuav tsum muaj kev sib cuag siab zog.

b High abrasion tsis kam

Thaum lub dov bearing ua haujlwm ib txwm, ntxiv rau kev sib txhuam dov, nws kuj tseem nrog zawv zawg kev sib txhuam.Qhov tseem ceeb ntawm zawv zawg kev sib txhuam yog: qhov chaw sib cuag ntawm lub dov lub caij thiab txoj kev sib tw, qhov chaw sib cuag ntawm lub dov lub caij thiab lub tawb hnab tshos, nruab nrab ntawm lub tawb thiab lub nplhaib qhia tav, thiab cov menyuam kawg nto thiab lub nplhaib qhia tos nruab nrab ntawm cov phab ntsa.Qhov muaj nyob ntawm zawv zawg kev sib txhuam hauv dov bearings inevitably ua rau hnav ntawm cov kabmob.Yog tias qhov hnav tsis kam ntawm cov kabmob steel tsis zoo, cov kabmob dov yuav poob nws qhov tseeb ntxov ntxov vim hnav lossis txo qhov kev sib hloov raug, uas yuav ua rau muaj kev vibration ntawm cov kabmob thiab txo nws txoj sia.Yog li ntawd, cov kabmob steel yuav tsum muaj kev hnav tsis kam.

c siab elastic txwv

Thaum cov kabmob dov ua haujlwm, vim tias qhov chaw sib cuag ntawm cov khoom siv dov thiab cov kev sib tw ntawm lub nplhaib me me, qhov kev sib cuag ntawm qhov chaw sib cuag loj heev thaum cov kabmob yog nyob rau hauv load, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej ntawm loj load.Txhawm rau tiv thaiv cov yas deformation ntau dhau nyob rau hauv kev sib cuag nrog kev ntxhov siab, poob ntawm cov kabmob raug lossis cov kab nrib pleb, cov kabmob hlau yuav tsum muaj kev txwv siab.

d Tsim nyog hardness

Hardness yog ib qho tseem ceeb qhia ntawm dov bearings.Nws muaj kev sib raug zoo nrog cov khoom sib cuag qaug zog, hnav tsis kam, thiab elastic txwv, thiab cuam tshuam ncaj qha rau lub neej ntawm dov bearings.Lub hardness ntawm cov kabmob feem ntau yog txiav txim los ntawm tag nrho cov teeb meem ntawm cov kabmob load hom thiab qhov loj, bearing loj thiab phab ntsa thickness.Lub hardness ntawm dov bearing steel yuav tsum tsim nyog, loj dhau los yog me me yuav cuam tshuam rau lub neej kev pab cuam ntawm cov kabmob.Raws li peb txhua tus paub, lub ntsiab tsis ua hauj lwm hom ntawm dov bearings yog hu rau qaug zog kev puas tsuaj thiab poob ntawm bearing raug vim tsis zoo hnav tsis kam los yog dimensional instability;Yog hais tias cov bearings tsis muaj ib tug tej yam kev mob ntawm toughness, lawv yuav tshwm sim los ntawm brittle puas thaum raug rau loj tej yam loads.Kev puas tsuaj ntawm cov kabmob.Yog li ntawd, qhov hardness ntawm cov kabmob yuav tsum tau txiav txim siab raws li qhov xwm txheej tshwj xeeb ntawm cov kabmob thiab txoj kev puas tsuaj.Rau qhov poob ntawm bearing raug vim qaug zog spalling los yog tsis zoo hnav tsis kam, siab dua hardness yuav tsum tau xaiv rau bearing qhov chaw;rau cov kabmob uas muaj kev cuam tshuam loj dua (xws li dov mills: bearings, railway bearings thiab qee lub tsheb bearings, thiab lwm yam), lawv yuav tsum raug txo kom tsim nyog rau cov hardness yog tsim nyog los txhim kho lub toughness ntawm cov kabmob.

e tej yam cuam tshuam toughness

Ntau cov kabmob dov yuav raug cuam tshuam rau qee qhov kev cuam tshuam thaum siv, yog li cov kabmob steel yuav tsum muaj qee qhov kev nyuaj siab los xyuas kom meej tias cov kabmob tsis raug puas vim muaj kev cuam tshuam.Rau cov kabmob uas tiv taus qhov hnyav hnyav, xws li dov zeb bearings, railway bearings, thiab lwm yam, cov ntaub ntawv yuav tsum muaj kev cuam tshuam loj heev thiab tawg toughness.Qee qhov ntawm cov kabmob no siv cov txheej txheem bainite quenching tshav kub kho, thiab qee qhov siv cov khoom siv hlau carburized.Xyuas kom meej tias cov bearings no muaj kev cuam tshuam zoo thiab toughness.

f Zoo dimension stability

Rolling bearings yog precision mechanical qhov chaw, thiab lawv qhov tseeb yog xam hauv micrometers.Nyob rau hauv cov txheej txheem ntawm kev khaws cia ntev thiab siv, kev hloov hauv lub koom haum sab hauv lossis kev hloov hauv kev ntxhov siab yuav ua rau cov kabmob loj hloov pauv, ua rau cov kabmob tsis raug.Yog li ntawd, txhawm rau kom ntseeg tau qhov tseeb qhov tseeb ntawm cov kabmob, cov kabmob steel yuav tsum muaj qhov zoo ntawm qhov ruaj khov.

g Kev ua haujlwm zoo tiv thaiv xeb

Rolling bearings muaj ntau txheej txheem ntau lawm thiab lub voj voog ntau lawm ntev.Qee qhov semi-tiav lossis tiav lawm yuav tsum tau khaws cia ntev ua ntej sib dhos.Yog li ntawd, bearing qhov chaw yog nquag mus rau ib co degree ntawm corrosion thaum lub sij hawm ntau lawm txheej txheem los yog nyob rau hauv cia cov khoom tiav.Nws yog nyob rau hauv huab cua ntub.Yog li ntawd, cov kabmob steel yuav tsum muaj cov xeb zoo.

h Cov txheej txheem ua tau zoo

Nyob rau hauv cov txheej txheem ntawm dov bearings, nws cov khoom yuav tsum mus los ntawm ntau yam txias thiab kub ua txheej txheem.Qhov no yuav tsum tau hais tias cov kabmob steel yuav tsum muaj cov txheej txheem zoo, xws li txias thiab kub tsim cov khoom, txiav, sib tsoo kev ua haujlwm thiab kev kho cua sov, thiab lwm yam, kom ua tau raws li qhov xav tau ntawm cov kabmob dov loj, kev ua haujlwm siab, tus nqi qis thiab kev tsim khoom zoo. .

Nyob rau hauv tas li ntawd, rau bearings siv nyob rau hauv tshwj xeeb kev ua hauj lwm tej yam kev mob, ntxiv rau cov saum toj no-hais yooj yim yuav tsum tau, coj tshwj xeeb kev kawm yuav tsum tau muab tso rau pem hauv ntej rau cov hlau siv, xws li kub tsis kam, siab ceev kev ua tau zoo, corrosion kuj thiab antimagnetic kev ua tau zoo.