Characterization evaluation crushing as a discarded brake shoe for freight and passenger car

Discarded brake shoes' grinding characteristics for passenger and freight car were evaluated. It was possible to triturate the shoes into the size of less than 1mm. And the thermal treatment samples at 500℃ and 900℃ were more easily crushed and grinded than the samples at room temperature. There was no physical properties and composition changes of the shoes. We finally determined that the properties and composition of the basic raw materials weren't changed except for abrasion of friction materials.