Koj paub dab tsi txog cov kabmob?

Cov yam ntxwv ntawm kev txav
Thaum lub tiaj bearing ua hauj lwm, ib tug nyias roj zaj duab xis yuav tsum tau nyob nruab nrab ntawm lub bearing hav txwv yeem thiab lub rotating ncej los lubricate nws. Yog hais tias lub lubrication tsis zoo, muaj kev sib txhuam ncaj qha ntawm cov kabmob thiab cov ncej, thiab kev sib txhuam yuav ua rau kub siab heev, txawm hais tias cov kabmob yog ua los ntawm cov khoom siv tshwj xeeb kub-kub alloy, tab sis qhov kub ntawm qhov kev sib txhuam ncaj qha yog tseem. txaus kom hlawv nws tawm. Lub plhaub bearing kuj tseem tuaj yeem hlawv vim qhov hnyav dhau, qhov kub thiab txias, impurities hauv cov roj lubricating lossis txawv txav viscosity thiab lwm yam. Cov zawv zawg kabmob tau puas lawm tom qab cov pobzeb raug hlawv.

Bearing hav txwv yeem machining
Lub thickness-walled bearing hav txwv yeem tuaj yeem raug cam khwb cia, thiab txheej ntawm cov kabmob alloy (hu ua bearing liner) tuaj yeem nchuav rau ntawm qhov chaw sab hauv ntawm cov kabmob hav txwv yeem txhawm rau txhim kho kev sib txhuam. Txhawm rau ua kom cov kabmob alloy thiab cov kabmob plhaub txuas tau zoo, ntau hom mortise, zawj lossis xov yog feem ntau ua rau sab hauv ntawm cov kabmob plhaub. Nyias phab ntsa bearing tuaj yeem ua tau loj-tsim los ntawm kev txuas ntxiv ntawm cov phaj bimetal.
Hmoov metallurgy yog kev sib xyaw ntawm cov ntaub ntawv yooj yim xws li hlau lossis tooj liab hauv cov hmoov hmoov nrog graphite, thiab tom qab ntawd nias thiab sintering sib sau. Nws cov pores tuaj yeem khaws cov roj lubricating, hu ua roj bearing.
Cov kabmob bushing feem ntau yog mos, lub tog raj kheej sab hauv yuav tsum tsis txhob ua tiav los ntawm kev sib tsoo, tuaj yeem ua tiav los ntawm kev tho txawv, pob zeb diamond tho txawv, scraping lossis sib tsoo txoj kev. Txoj kev sib tsoo yuav tsum tsis txhob siv kom phim lub taub hau, tab sis yuav tsum siv tus pas nrig tshwj xeeb nrog qhov loj tib yam li cov kabmob qhov. Scraping feem ntau yog siv rau ib feem ntawm cov pobzeb bearings, nrog ib tug dav hniav scraper. Thaum khawb ntawm tes, khawb yuav tsum tau ntiav. Cov kabmob hav txwv yeem nrog cov duab puab sab hauv yuav tsum tau txais txoj kev tho txawv tshwj xeeb raws li cov duab tshwj xeeb.

Cov khoom siv bearing yog tus cwj pwm los ntawm kev sib txhuam me me, kev qaug zog txaus, kev ua haujlwm zoo thiab zoo corrosion kuj. Feem ntau siv cov khoom siv bearing yog bearing alloy (Babbitt), tooj liab alloy, hmoov metallurgy thiab grey cam khwb cia hlau thiab hnav-resistant cam khwb cia hlau.
Tsis-lubricated bearing bushing cov ntaub ntawv yog cov polymer, carbon graphite thiab tshwj xeeb ceramics peb pawg.
polymer
Polymer tseem hu ua organic polymer cov ntaub ntawv, engineering plastics. Cov khoom siv feem ntau yog phenolic resin, nylon, polytetrafluoroethylene (PTFE) thiab lwm yam. Cov kabmob uas tsis yog-lubricated ua los ntawm cov yas (xws li PTFE) tuaj yeem tiv taus cov kua qaub thiab cov alkalis tsis muaj zog, thiab muaj kev sib txuam zoo, tiv thaiv kev sib txhuam thiab hnav tsis kam. Cov ntawv polytetrafluoroethylene yog stamped rau hauv di ncauj foob nplhaib, bearing bush, piston nplhaib thiab gasket, thiab lwm yam, uas yog siv rau siv conveyor, tshuab ntaus ntawv, tshuab xaws, ntaub ntawv neeg uas ua ntawv turntable, dej twj tso kua mis, textile machinery thiab ua liaj ua teb machinery.
Lub polymer muaj cov yam ntxwv ntawm lub teeb yuag, rwb thaiv tsev, tiv thaiv kev sib txhuam, hnav tsis kam, nws tus kheej lubrication, corrosion kuj, yooj yim molding txheej txheem thiab ntau lawm efficiency. Piv nrog rau cov ntaub ntawv hlau, lawv cov khoom tribological yog rhiab heev rau ambient kub thiab av noo, thiab cov yam ntxwv muaj feem xyuam rau viscoelasticity yog qhov tseem ceeb, yog li qhov sib txawv ntawm cov kabmob bush thiab cov ntawv xov xwm loj dua. Thiab vim nws tsis tshua muaj zog txhua yam, me me elastic modulus, tsis zoo nqus cov roj lubricating, thiab txwv kev ua haujlwm ceev thiab siab tus nqi ntawm cov kabmob.
carbon-graphite
Carbon-graphite bearing tuaj yeem siv rau hauv qhov chaw hnyav. Cov ntsiab lus graphite ntau dua, cov khoom siv softer, qhov me me ntawm kev sib txhuam coefficient.
Cov pa roj carbon graphite feem ntau muaj hluav taws xob zoo, tiv thaiv tshav kub, hnav tsis kam, nws tus kheej lubrication, kub stability, muaj zog tshuaj corrosion kuj, thermal conductivity ntau dua li polymer, thiab me me linear expansion coefficient. Kev sib txhuam thiab hnav tus nqi nrog chrome-plated nto yog tsawg heev ntawm atmospheric thiab chav tsev kub. Nws tus kheej moistening thiab antifriction zog nyob ntawm seb cov dej vapor adsorbed, tab sis yuav poob lubricity ntawm cov av qis heev. Kev hnav tsis kam ntawm carbon graphite tuaj yeem txhim kho los ntawm kev siv cov txheej txheem abrasion resistant. Carbon-graphite kuj tseem siv tau los ua cov khoom siv dej-lubricated bearing.
Graphite tsis tuaj yeem tsuas yog siv los ua cov khoom siv roj nplua nyeem, tuaj yeem ntxiv rau cov cob, hlau, ceramics thiab lwm yam ntaub ntawv, ua rau kom muaj kev sib txhuam ntawm cov ntaub ntawv no, tab sis kuj tuaj yeem siv ncaj qha los ntawm kev sib txhuam cov khoom siv, xws li ua ntawv, ntoo ua, textile, zaub mov thiab lwm yam roj-resistant qhov chaw ntawm bearings, siab kub dawb bearings, sealing rings, piston rings, scrapers thiab hais txog. Cov "chav kawm" tus neeg sawv cev ntawm cov ntaub ntawv carbon-graphite rau kev siv tshuab engineering yog M, thiab muaj plaub series: carbon-graphite cov ntaub ntawv, electrochemical graphite cov ntaub ntawv, resin carbon composite cov ntaub ntawv thiab hlau graphite cov ntaub ntawv.
ceramic
Ceramics yog inorganic non-metallic tej yam ntuj tso minerals los yog dag tebchaw raws li raw cov ntaub ntawv, los ntawm kev sib tsoo, tsim thiab kub sintering, muaj li ntawm ntau inorganic non-metallic me me crystals thiab iav theem ntawm cov ntaub ntawv uas tsis yog-hlau. Cov tsoos ceramics yog tsim los ntawm inorganic non-metallic tej yam ntuj tso minerals, xws li av nplaum, feldspar, quartz, thiab lwm yam. Tshwj xeeb ceramics yog tsim nrog cov khoom siv dag zog ua raw khoom. Cov ceramics siv nyob rau hauv mechanical engineering feem ntau yog tshwj xeeb ceramics ua los ntawm alumina, magnesium oxide, zirconia, lead oxide, titanium oxide, silicon carbide, boron carbide, silicon nitride, boron nitride thiab lwm yam khoom xyaw.
Cov khoom ntawm ceramics feem ntau txiav txim siab los ntawm lawv cov microstructure, suav nrog cov nplej loj thiab kev faib tawm, muaj pes tsawg leeg thiab cov ntsiab lus ntawm cov iav theem, thiab qhov xwm txheej, cov ntsiab lus thiab kev faib tawm ntawm impurities. Lub microstructure yog txiav txim los ntawm raw cov ntaub ntawv, muaj pes tsawg leeg thiab kev tsim khoom. Cov yam ntxwv ntawm cov ceramics yog siab hardness thiab compressive zog, kub tsis kam, hnav tsis kam, oxidation tsis kam, corrosion kuj, brittleness, tej yam kuj thiab non-ductility.
Ceramic yog ib yam tshiab ntawm cov kabmob uas tsis muaj lubrication, tshwj xeeb tshaj yog SiC thiab Si3N4, lawv lub zog, kub tsis kam thiab corrosion kuj zoo heev, tribological khoom kuj zoo heev.