Motor train unit grinder which does not generate metal inserts and has good shaping effect

The invention provides a motor train unit grinding element which does not generate metal inserts and is good in shaping effect. The motor train unit grinder comprises the following components in percentage by weight: 10-30% of modified phenolic resin, 30-40% of reduced iron powder, 10-20% of copper fiber, 3-8% of steel fiber, 3-8% of potassium feldspar, 4-9% of graphite, 3-8% of cryolite, 2-4% ofaluminum oxide, 1-3% of precipitated barium sulfate and 2-5% of boron nitride, wherein the motor train unit grinder does not comprise sepiolite. The invention further provides a preparation method ofthe motor train unit grinding body and application of the motor train unit grinding body in railway transportation. 本发明提供一种不产生金属镶嵌物且修形效果良好的动车组研磨子，该种动车组研磨子包括如下重量百分含量的组分：改性酚醛树脂10-30％、还原铁粉30-40％、铜纤维10-20％、钢纤维3-8％、钾长石3-8％、石墨4-9％、冰晶石3-8％、氧化铝2-4％、沉淀硫酸钡1-3％、氮化硼2-5％，且所述动车组研磨子不包括海泡石。本发明还提供了所述动车组研磨子的制备方法及其在铁路运输中的用途。