Dab tsi yog cov khoom siv ceramic nres ua los ntawm? (zoo tshaj)
Ceramic brake pads subvert lub tswvyim ntawm ceramic brake pads nyob rau hauv ib txwm kev nkag siab. Ceramic brake pads yog tsim los ntawm ceramics fibers, hlau-dawb muab tub lim, adhesives thiab ib tug me me ntawm cov hlau.
Ceramic brake pads yog ib hom nres nres. Ntau tus neeg siv khoom yuam kev xav tias lawv yog ua los ntawm ceramics thaum xub thawj. Qhov tseeb, ceramic nres pads pib los ntawm lub hauv paus ntsiab lus ntawm cov hlau ceramics es tsis txhob yog xim hlau ceramics. Qhov kub siab uas tsim los ntawm qhov chaw tuaj yeem ncav cuag 800-900 degrees raws li qhov ntsuas, thiab qee qhov ntau dua. Ntawm qhov kub siab no, cov tshuaj tiv thaiv zoo ib yam li cermet sintering yuav tshwm sim ntawm qhov chaw ntawm lub nres nres, uas ua rau lub nres nres muaj kev ruaj ntseg zoo ntawm qhov kub no. Txawm li cas los xij, cov tsoos nres nres yuav tsis tsim cov tshuaj tiv thaiv sintering ntawm qhov kub no. Vim tias qhov kub ntawm qhov kub nce siab heev, cov khoom siv saum npoo yuav yaj thiab txawm tias tsim cov cua cushions, uas yuav ua rau lub braking kev ua tau zoo txo qis los yog cov brakes yuav ploj tag nrho tom qab nres nres.
Nta ntawm ceramic nres ncoo:
Tsawg plua plav ntawm lub log; Lub neej ntev ntawm discs thiab couplers; tsis muaj suab nrov / vibration / puas rau discs. Kev ua haujlwm tshwj xeeb yog:
(1) Qhov sib txawv loj tshaj plaws ntawm ceramic nres ncoo thiab tsoos nres nres yog tias tsis muaj hlau. Hlau nyob rau hauv cov tsoos nres pads yog cov khoom tseem ceeb uas tsim kev sib txhuam, uas muaj lub siab braking quab yuam, tab sis hnav ntau heev thiab muaj suab nrov. Tom qab txhim kho ceramic nres ncoo, yuav tsis muaj qhov txawv txav (uas yog, khawb suab) thaum tsav tsheb. Vim tias cov khoom siv hluav taws xob ceramic tsis muaj cov khoom siv hlau, nws zam cov hlau clamor ntawm kev sib txhuam ntawm cov tsoos hlau nres ncoo thiab cov counterpart (uas yog, lub nres nres thiab nres nres).
(2) ruaj khov coefficient ntawm kev sib txhuam. Lub coefficient ntawm kev sib txhuam yog qhov tseem ceeb tshaj plaws Performance index ntawm cov khoom sib txhuam, uas muaj feem xyuam rau lub peev xwm ntawm lub nres nres. Thaum lub sij hawm lub braking txheej txheem, vim lub tshav kub generated los ntawm kev sib txhuam thiab qhov nce ntawm kev ua hauj lwm kub, cov khoom sib txhuam ntawm lub tshuab nres nres yog cuam tshuam los ntawm qhov kub thiab txias, thiab kev sib txhuam coefficient pib txo. Hauv kev siv tswv yim, kev sib txhuam quab yuam yuav raug txo, yog li txo cov nyhuv braking. Cov khoom siv sib txhuam ntawm cov khoom siv sib tsoo zoo tib yam yog qhov tsis paub tab, thiab kev sib txhuam coefficient siab dhau, ua rau tsis muaj kev nyab xeeb xws li kev tswj tsis tau, cov pa taws kub hnyiab, thiab khawb lub brake disc thaum lub sijhawm braking. Txawm hais tias qhov kub ntawm lub nres nres nce mus txog 650 degrees, qhov sib txhuam coefficient ntawm lub tshuab nres tsheb ceramic tseem nyob ib puag ncig 0.45-0.55, uas tuaj yeem ua kom lub tsheb muaj kev ua haujlwm zoo.
(3) Ceramics muaj thermal stability, tsis tshua muaj thermal conductivity, thiab hnav tsis kam. Kev siv lub sijhawm ntev kub yog 1000 degrees. Cov yam ntxwv no ua rau cov ceramics haum rau cov kev ua haujlwm siab ntawm ntau yam khoom siv braking, thiab tuaj yeem ua tau raws li cov kev cai ntawm kev kub ceev nres, kev nyab xeeb, thiab hnav tsis kam.
(4) Nws muaj lub zog zoo txhua yam thiab lub cev muaj zog. Muaj peev xwm tiv taus siab dua thiab shear quab yuam. Ua ntej sib dhos thiab siv cov khoom siv sib txhuam, machining xws li drilling thiab sib dhos yog yuav tsum tau ua kom muaj kev sib txuas ntawm lub nres. Yog li ntawd, nws yuav tsum tau hais tias cov khoom sib txhuam yuav tsum muaj lub zog txhua yam kom ntseeg tau tias tsis muaj kev puas tsuaj lossis tawg tawg tshwm sim thaum ua haujlwm lossis siv.
