Kev sib txhuam cov ntaub ntawv uas: xaiv yuav tsum

Advanced khoom siv muaj ib tug kuj complex qauv. Kev sib txhuam mechanisms kis tsab ntawv tsa suab los ntawm txoj kev tsis sib haum xeeb. Nws yuav ua tau clutch, clamps, brakes thiab unclenching.

Hais tias cov khoom yog check, ua hauj lwm tsis muaj downtime, nws cov ntaub ntawv muab tso rau pem hauv ntej tshwj xeeb uas yuav tsum tau. Lawv tas li loj hlob. Tom qab tag nrho cov machinery thiab cov khoom siv yog lossi tau zoo tuaj. Kom lawv lub hwj chim, kev khiav hauj lwm ceev thiab load. Yog li ntawd, ntau yam kev sib txhuam ntaub ntawv siv nyob rau hauv tus txheej txheem ntawm lawv lub lag luam. Lawv zoo nyob ntawm kev ntseeg thiab kev durability ntawm cov khoom. Nyob rau hauv tej rooj plaub, cov ntsiab ntawm lub system nyob rau txoj kev ruaj ntseg thiab nyob ntawm cov neeg.

General yam ntxwv

Kev sib txhuam cov ntaub ntawv - muaj ib cov ntsiab ntawm cov rooj sib txoos thiab mechanisms uas muaj lub peev xwm mus nqus zog txhua yam thiab dissipate nws mus rau tej ib chig. Yog li tag nrho cov kev tsim yuav tsum tsis txhob hnav tawm sai sai. Rau lub hom phiaj no, lub hais ntaub ntawv muaj tej yam khoom.

Lub coefficient ntawm tsis sib haum xeeb ntawm kev sib txhuam cov ntaub ntawv uas yuav tsum tau ruaj khov thiab siab. durability index yog kuj yuav tsum tau mus ntsib cov kev ua tau zoo uas yuav tsum tau. Cov ntaub ntawv muaj zoo thaum tshav kub kub kuj thiab yog tsis raug rau cov neeg kho tshuab kev nyuaj siab.

Cov tshuaj yeeb dej caw ua kev sib txhuam muaj nuj nqi, tsis mus lob cov ua hauj lwm cov chaw, nws yog tej txiaj ntsim nrog txaus adhesion zog. Lub totality ntawm cov zog kom cov lag luam ntawm cov khoom thiab tshuab.

cov ntaub ntawv uas cov khoom

Tus txhuam ntaub ntawv muaj ib qho ntawm cov khoom. Lub ntsiab sawv daws yuav uas muaj npe saum toj no. Qhov kev pab no zoo. Lawv txhais ua hauj lwm cov yam ntxwv ntawm txhua substance.

Tiam sis tag nrho ntawm cov kev pab yam ntxwv yog vim muaj ib tug txheej ntawm lub cev, neeg kho tshuab thiab teplostaticheskih ntsuas. Cov tsis sib txawv thaum lub sij hawm kev lag luam cov ntaub ntawv uas. Tab sis lawv kawg tus nqi yog muab rau tus account nyob rau hauv lub xaiv ntawm cov kev sib txhuam cov khoom siv.

Muaj yog ib tug faib cov khoom rau zoo li qub, dynamic thiab tej nuj nqis. Cov thawj pab pawg neeg ntawm tsis txog kev txwv compression zog, dabtsi yog khoov thiab ncab. Nws kuj muaj xws li thaum tshav kub kub, thermal conductivity thiab cov linear expansion ntawm cov khoom.

Lub ntsuas txhais nyob rau hauv dynamic tej yam kev mob, nyob qib raws li thaum tshav kub kub kuj, Thaum tshav kub kub kuj. Nyob rau hauv lub sim tej yam kev mob teem kev sib txhuam coefficient, hnav kuj thiab stability.

hom ntaub ntawv

Kev sib txhuam cov ntaub ntawv thiab clutch nres system feem ntau ua rau ib tug tooj liab los yog hlau raws li. Qhov thib ob pab pawg neeg ntawm tshuaj siv nyob rau hauv siab load tej yam kev mob, tshwj xeeb yog rau qhuav sib txhuam. Tooj ntaub ntawv no yog siv rau nruab nrab thiab lub teeb loads. Ntxiv mus, lawv yog haum ob leeg rau qhuav sib txhuam thiab nrog lubricating kua.

Nyob rau hauv niaj hnub tej yam kev mob ntawm ntau lawm ntaub ntawv yog lug siv nyob rau hauv cov roj hmab thiab cob raws li. Tsis tas li ntawd, ntau yam fillers tej zaum yuav siv ntawm nws yog xim hlau thiab tsis-metallic Cheebtsam.

kheej ntawm daim ntawv thov

Muaj yog ib tug faib ntawm kev sib txhuam cov ntaub ntawv, nyob ntawm seb lawv daim ntawv thov. Cov thawj pab pawg neeg no muaj xws li ntau dua kis tau tus mob kiag li lawm. Qhov nruab nrab thiab maj mam loaded mechanisms uas ua hauj lwm tsis muaj lubrication.

Ntxiv faib tsis sib haum xeeb cov ntaub ntawv uas nres tshuab rau nruab nrab thiab heavy-duty machinery. roj yog thov nyob rau hauv cov ntshav.

Qhov thib peb pab pawg neeg no muaj xws li tej yam tshuaj siv nyob rau hauv lub interlocking ntawm nruab nrab thiab hnyav machine. Nyob rau hauv lawv, cov roj yog tam sim no.

Tsis tas li ntawd cais cais nres band khoom nyob rau hauv uas cov kua roj nplua nyeem yog tam sim no. Lub ntsiab tsis muaj lub tswv yim ua txiav txim cov kev xaiv ntawm kev sib txhuam cov ntaub ntawv.

Lub clutch load ua rau lub ntsiab ntawm lub system mus txog 1 thiab tus nres - mus txog rau 30 vib nas this. Qhov no xam lub sij lub yam ntxwv ntawm ntshav cov ntaub ntawv.

nws yog xim hlau ntaub ntawv

Raws li twb hais saum toj no, lub ntsiab kev sib txhuam clutch nws yog xim hlau ntaub ntawv nres yog hlau thiab tooj liab. hnub no yog heev nrov hlau thiab cam khwb cia hlau.

Lawv yog muaj feem xyuam nyob rau hauv txawv kev npaj rau. Piv txwv li, kev sib txhuam cov ntaub ntawv rau ib tug nres ncoo, uas muaj pes tsawg leeg muaj hlau, feem ntau siv nyob rau hauv railway systems. Nws tsis warp tab sis sharply loses nws gliding qualities ntawm ib tug kub ntawm 400 ° C.

Tsis-metallic ntaub ntawv

Kev sib txhuam clutch los nres ntaub ntawv kuj ua los ntawm nonmetallic tshuaj. Lawv yog tsim raws li feem ntau nyob rau hauv asbestos (cob, roj hmab binders ua).

Lub coefficient ntawm tsis sib haum xeeb tseem txaus siab kub rau 220 ° C. Yog hais tias lub phau ntawv cob yog ib cov khoom yus muaj los ntawm lub siab coj kuj. Tab sis lawv me ntsis qis coefficient ntawm tsis sib haum xeeb txheeb ze mus rau lwm cov uas zoo sib xws cov ntaub ntawv. Ib tug nrov duab ntawm yas raws li xws ua retinax. Nyob rau hauv nws cov qauv muaj phenol-formaldehyde cob, asbestos, barite, thiab lwm yam. Qhov no tshuaj yog pab tau rau cov nres cov rooj sib txoos thiab nrog hnyav khiav hauj lwm tej yam kev mob. Nws yuav nws cov khoom txawm tias thaum rhuab mus rau 1000 ° C. Yog li ntawd retinax siv txawm nyob rau hauv aircraft braking systems.

Asbestos khoom yog ua los ntawm kev tsim homonymous cov ntaub so ntswg. Nws yog impregnated nrog asphalt, roj hmab los yog bakelite, thiab compressed sov siab. Luv asbestos fibers kuj tsim tau ib cov nonwoven ntaub qhwv to. Lawv ntxiv swarf. Tej zaum, rau ntxiv zog nyob rau hauv lawv cov dag hlau yog tswvcuab.

Frits

Muaj yog ib yam zoo hais system Cheebtsam. Qhov no sintered txhuam ntaub ntawv nres system. Hais tias qhov no hom yuav ua ntau pom meej los ntawm cov qauv ntawm cov lawv siv thiab ua. Lawv feem ntau ua rau ib tug steel puag. Thaum lub sij hawm welding, lwm yam sintered nrog nws, ib feem ntawm lub Cheebtsam. Pre-compacted preform muaj li ntawm hmoov mixtures twb raug mus rau high-kub cua sov.

Tej ntaub ntawv no feem ntau tsuas yog siv ib tug hnyav-duty clutches thiab nres tshuab. Lawv muaj kev kawm siab nyob rau hauv lub lag luam yog txiav txim los ntawm ob pab pawg ntawm cov Cheebtsam uas yog ib feem ntawm. Tus thawj ntaub ntawv muab ib tug zoo kev sib txhuam coefficient thiab hnav tsis kam, thiab lub thib ob - ib tug txaus theem ntawm stability thiab adhesion.

Ntaub ntawv raws li nyob rau hauv steel rau qhuav sib txhuam

Qhov kev xaiv ntawm cov ntaub ntawv uas rau qhov sib txawv systems raws li nyob rau hauv cov nyiaj txiag thiab kev feasibility ntawm manufacturing thiab lag luam. Ib tug ob peb xyoo dhau los xws ntaub ntawv nyob rau hauv kev thov nyob rau hauv hlau hauv paus, raws li cov FMC-8, MKV-50A thiab QMS. Kev sib txhuam cov khoom siv rau brake los uas yog siv nyob rau hauv heavy-duty lub nruab tau tom qab ua los ntawm PMA-11.

MKV-50A yog ib tug tshiab txoj kev loj hlob. Nws yog siv nyob rau hauv qhov siv thiab ua linings rau disc brakes. Nws muaj lub zoo dua tshaj ib tug pab pawg neeg ntawm MCF ratios stability, hnav kuj.

Nyob rau hauv hnub no tus raug yog ntau QMS hom ntaub ntawv. Lawv nce manganese cov ntsiab lus. Tsis tas li ntawd, nws yog tsim los ntawm carbide thiab boron nitride, molybdenum disulfide thiab Karbid Kremniya.

Ntaub ntawv raws li nyob rau hauv qhuav txhuam bronze

Cov kis tau tus mob thiab nres lub nruab rau ntau lub hom phiaj yog proven ntaub ntawv raws li nyob rau hauv tin bronze. Lawv yog cov tsawg npaum li cas coj pos qhov chaw ua los ntawm cam khwb cia hlau los yog hlau, dua li cov tsis sib haum xeeb ntaub ntawv nyob rau hauv ib tug hlau hauv paus.

Muab ib tug ntau yam ntawm cov ntaub ntawv siv, txawm nyob rau hauv lub chaw ua dav hlua kev lag luam. Tshwj xeeb kev khiav hauj lwm tej yam kev mob lub tin yuav hloov xws ntaub ntawv raws li titanium, pob zeb ntais, vanadium, arsenic. Qhov no tiv thaiv lub tsim ntawm intercrystalline corrosion.

Ntaub ntawv raws li nyob rau hauv tin bronze yog dav siv nyob rau hauv lub tsheb lag luam raws li zoo raws li nyob rau hauv qhov siv thiab ua liaj ua teb machinery. Lawv muaj peev xwm mas hnyav loads. Muaj nyob rau hauv lub 5-10% tin hlau qhia ntau zog. Lead thiab graphite ua raws li ib tug khoom lubricant thiab silicon dioxide los yog pob zeb ntais nce kev sib txhuam coefficient.

Ua hauj lwm tej yam kev mob nyob rau hauv ib cov kua roj nplua nyeem

Ntaub ntawv siv nyob rau hauv qhuav tshuab, muaj ib tug tseem ceeb drawback. Lawv yuav raug ceev ceev coj. Thaum ntaus los ntawm cov roj nplua nyeem los ntawm cov uas nyob ib sab o yog ruaj txo lawv cov hauj lwm zoo. Yog li ntawd, nyob rau hauv tsis ntev los no xyoo ua ntau ntaub ntawv npaj rau kev siv nyob rau hauv cov roj.

Tej khoom siv switched ntseeg nkaws, yus muaj los ntawm lub siab coj kuj. Nws yog yooj yim chilled thiab yooj yim kev sib khi.

Nyob rau hauv txawv teb chaws xyaum lately loj hlob zus tau tej cov xws li ib tug khoom raws li ib tug kev sib txhuam ntawv cov ntaub ntawv uas rau brakes, clutches, thiab lwm yam mechanisms raws li asbestos. Nws yog impregnated nrog cob. Tus qauv muaj xws li cov molded ntsiab nrog ib tug high school cov ntsiab lus ntawm cov hlau fillers.

Feem ntau cov feem ntau, qhov nruab nrab siv rau lubricating sintered lub cev kev qhia los ntawm tooj liab. Yuav kom txhim kho frictional yam ntxwv, uas tsis yog-nws yog xim hlau khib nyiab yog nkag tau rau hauv muaj pes tsawg leeg.

txoj kev txhim kho cov khoom

Tus thawj txoj kev txhim kho yuav tsum tau coj kuj, uas muaj lub tsis sib haum xeeb cov ntaub ntawv. Nyob rau qhov no nyob rau hauv lub economic thiab ua hauj lwm zoo feasibility ntawm cov tivthaiv. Nyob rau hauv cov ntaub ntawv no, lub tshuab yog tsim txoj kev los mus tshem tawm ntev li thaum tshav kub kub nyob rau hauv tsis sib haum xeeb chaw. Yuav kom txhim kho cov cuab yeej ntawm tus txhuam khoom, kev siv ntawm cov ntaus ntawv, thiab kuj tswj cov kev khiav hauj lwm tej yam kev mob.

Yog hais tias cov ntaub ntawv siv nyob rau hauv tej yam kev mob ntawm qhuav txhuam, tsom rau lawv cov qib high-kub zog thiab oxidation kuj. Tej ntaub ntawv no muaj tsawg raug rau abrasive coj hom. Tab sis rau nruab nrog ib tug roj nplua nyeem thaum tshav kub kub kuj tsis muaj teeb meem txhua yam uas ntau npaum li cas. Yog li ntawd, ntau mloog yog them rau lawv lub zog.

Raws li technologies thaum kev txhim kho cov zoo sib txhuam ntaub ntawv them sai sai rau lawv degree ntawm oxidation. Tus me nws yog, qhov ntau check tivthaiv mechanisms. Lwm qauv yog los txo cov porosity ntawm cov khoom.

Niaj hnub nimno ntau lawm yuav tsum tau txhim kho cov kev thov ntxiv ntaub ntawv thaum lub sij hawm siv thiab ntawm cov ntau yam tsiv, hloov kiag li lawm. Qhov no suav tau ua lub loj hlob neeg thiab ua hauj lwm zoo yuav tsum mus rau ib tug kev sib txhuam cov khoom siv.