The thermal cracking and wear mechanism of rail wheel tread have been studied.The results showed that the thermal cracking of rail wheel tread is related to the chemical composition (mainly the carbon content)and the ...The thermal cracking and wear mechanism of rail wheel tread have been studied.The results showed that the thermal cracking of rail wheel tread is related to the chemical composition (mainly the carbon content)and the hardness of the wheels.When the composite braking shoes are used,the rate of wear of the wheel tread is related to the fracture toughness of the newly-formed“white layer”i.e.the martensite.The thermal cracking proof wheels(55SiMn) so far developed has achieved significant operating results in practical use.展开更多
文摘The thermal cracking and wear mechanism of rail wheel tread have been studied.The results showed that the thermal cracking of rail wheel tread is related to the chemical composition (mainly the carbon content)and the hardness of the wheels.When the composite braking shoes are used,the rate of wear of the wheel tread is related to the fracture toughness of the newly-formed“white layer”i.e.the martensite.The thermal cracking proof wheels(55SiMn) so far developed has achieved significant operating results in practical use.
