高锰钢是一种含锰量为10～14％,锰炭比≥10的合金钢,具有良好的耐磨性及抗冲击韧性。用这种材料铸造的辙叉,在经受车轮冲击荷载过程中表面形成硬化层,硬度从原有的170～230HB提高到500～550HB。因此其通过运量可为同型普通钢轨组合式辙叉的10倍。 在毛主席“独立自主、自力更生”方针的指引下,我国于60年代初试制成功高锰钢整铸 High manganese steel is a manganese content of 10 to 14%, manganese carbon ratio ≥ 10 alloy steel, has good wear resistance and impact toughness. The frog cast by this kind of material can form a hardened layer on the surface during the impact load of the wheel, and the hardness increases from the original 170-230HB to 500-550HB. Therefore, the throughput can be 10 times the same type ordinary rail combined frog. Under the guidance of Chairman Mao’s principle of “independence and self-reliance,” China successfully trialled the production of high-manganese steel in the early 1960s