Lub luag haujlwm ntawm kev sib txhuam hloov pauv hauv cov khoom sib txhuam?
Raws li kev ua haujlwm ntawm kev hloov pauv kev sib txhuam hauv cov khoom sib txhuam, nws tuaj yeem muab faib ua ob hom: "cov khoom siv ntxiv" thiab "cov khoom siv sib txhuam-txo". Cov khoom sib txhuam nws tus kheej belongs rau cov khoom sib txhuam, thiab yuav tsum muaj kev sib txhuam coefficient siab txhawm rau ua haujlwm braking thiab kis tau tus mob, yog li cov khoom siv abrasive yog cov khoom tseem ceeb ntawm kev sib txhuam kev hloov pauv. Qhov kev sib txhuam nce cov nyhuv ntawm cov fillers sib txawv.
Cov khoom siv sib txhuam yog cov khoom siv tshwj xeeb uas ua haujlwm hauv qhov kub thiab txias, yog li nws yuav tsum tau siv cov khoom siv ua kom sov yuav tsum muaj cov cua sov zoo, uas yog, thermal stability, nrog rau cov teebmeem thermophysical thiab cov teebmeem thermochemical.
Lub ntim ntim ntawm cov muab tub lim muaj qhov cuam tshuam zoo rau kev ua haujlwm ntawm cov khoom sib txhuam. Cov kev ua tau zoo sib txawv ntawm cov khoom siv sib txhuam kuj muaj qhov sib txawv ntawm cov khoom ntim ntawm cov muab tub lim.
Cov khoom siv sib txhuam yog cov khoom siv tshwj xeeb uas ua haujlwm hauv qhov kub thiab txias, yog li nws yuav tsum tau siv cov khoom siv ua kom sov yuav tsum muaj cov cua sov zoo, uas yog, thermal stability, nrog rau cov teebmeem thermophysical thiab cov teebmeem thermochemical.
Lub ntim ntim ntawm cov muab tub lim muaj qhov cuam tshuam zoo rau kev ua haujlwm ntawm cov khoom sib txhuam. Cov kev ua tau zoo sib txawv ntawm cov khoom siv sib txhuam kuj muaj qhov sib txawv ntawm cov khoom ntim ntawm cov muab tub lim.
Lub hom phiaj ntawm kev siv brake pad muab tub lim feem ntau muaj cov hauv qab no:
1. Kho thiab txhim kho kev sib txhuam kev ua haujlwm, kev ua haujlwm ntawm lub cev thiab lub zog ntawm cov khoom siv.
2. Tswj cov coefficient ntawm thermal expansion, thermal conductivity thiab shrinkage ntawm cov khoom kom nce stability ntawm cov khoom loj.
3. Txhim kho lub suab nrov nres ntawm cov khoom.
4. Txhim kho cov txheej txheem tsim khoom thiab kev ua haujlwm ntawm cov khoom.
5. Txhim kho cov tsos zoo thiab ntom ntawm cov khoom.
6. Txo cov nqi tsim khoom. Thaum xaiv cov fillers nyob rau hauv cov qauv tsim ntawm cov ntaub ntawv sib txhuam, nws yog ib qho tsim nyog yuav tsum nkag siab txog cov khoom ntawm fillers thiab lub luag hauj lwm lawv ua si nyob rau hauv ntau yam ntxwv ntawm kev sib txhuam cov ntaub ntawv. Kev siv cov fillers kom raug txiav txim siab qhov ua tau zoo ntawm cov ntaub ntawv sib txhuam thiab tseem ceeb heev hauv kev tsim khoom.
