Is riachtanas tábhachtach eile é saol seirbhíse na n -ábhar cuimilte (pillíní coscáin ceirmeacha). Ag brath ar an gcineál ábhair cuimilte agus ar na coinníollacha úsáide, tá na riachtanais difriúil freisin. For example, how many kilometers of mileage are required for car brake pads?

Is é caitheamh an phéire cuimilte an chúis is mó le meathlú an stáit coscánaithe. Oibríonn cuimilte i bhfoirm oiriúnach dinimiciúil, agus méadaíonn an caillteanas ábhartha de dhromchla cuimilte de réir a chéile leis an méadú ar líon na n -úsáidí. When the wear accumulates to a certain extent, the characteristic parameters of dynamic friction pair gradually change and the working capacity is reduced. Bíonn tionchar ag caitheamh páirteanna meaitseála eile ar chaitheamh na bpéirí cuimilte. For example, the uneven wear of the brake CAM affects the lift of the CAM, which in turn affects the displacement of the shoe until it affects the contact between the friction material and the pair.

Braitheann caitheamh ar choinníollacha cuimilte agus ar staid na cuimilte. Tá an t -ábhar frithchuimilte i bhfoirm cuimilte tirim den chuid is mó, agus is coinníoll crua don phéire cuimilte é an coinníoll cuimilte seo gan bealaithe, rud a chuirfidh an bhearna meaitseála i bhfeidhm agus a mhéadóidh an fheidhmíocht coscánaithe. And under normal circumstances, the wear of the friction pair is uneven wear, and the wear gap caused by all wear is also uneven, which is prominent on the drum brake. Athraíonn neamh-aonfhoirmeacht na cuimilte dáileadh an bhrú coscáin agus méadaíonn sé an caitheamh neamh-éide de phéirí cuimilte. In addition, the friction heating of the braking process and the dust of the operating environment into the friction pair will cause the process of driving wear, which is thermal wear, abrasive wear, adhesive wear, fatigue wear and so on play a role at the An t -am céanna, is é sin, tá caitheamh dosheachanta. However, the amount and speed of wear can be controlled, because the speed of wear depends on the number and frequency of use, the intensity of use, the use environment and the level of use.