Oggi, i produttori di pastiglie dei freni automobilistiche parlano dei problemi comuni dei materiali semi-metal nelle pastiglie dei freni.

Semi-metallic formulations for friction materials. Main features: 1. Low cost. 2. High thermal conductivity. 3. Good wear resistance. 4. Adatto a condizioni di frenatura pesante.

1. Rumore, oscillazione e rugosità causano semplicemente rumore a bassa frequenza, accompagnato da violente oscillazione del corpo.

2. Più polvere (degrado a bassa temperatura).

Il volume percentuale è un'unità molto corretta per misurare i materiali di attrito. Formulation engineers should take the initiative to understand the fundamental properties of various raw materials (density, particle size, hardness, moisture, chemical composition, elastic modulus), but also should clearly understand the effects of various friction materials on the micro and macro functions of friction materials. Now, according to the understanding of automobile brake pad manufacturers, most formula design tests are based on the component ratio. In order to avoid the lack of fundamental data on the function of the raw material, it is theoretically difficult to express the connection between the number of ingredients in the formula and the conflicting functions in a simple and clear formula, such as mixing time, pressure time, pressure pressure, holding time and degassing time, grinding method, two layers of material, data and other factors can affect the braking function anytime and anywhere during the braking process. As regards the formulation itself, it is not correct to determine the proportions of the various ingredients by theoretical means, nor can we quickly derive direct quantitative links between the formulation and the function, which depend primarily on accumulated experience over a long period of time.