The wheel hubs of large mining dump trucks (with payload capacities of 100-300 tons) must support the total vehicle weight (which can reach several hundred tons) while transmitting driving power.
Undergo forging followed by isothermal quenching, developing a bainitic microstructure on the surface with hardness reaching 45-50HRC, which delivers outstanding wear resistance and thermal fatigue resistance, effectively preventing brake failure caused by high-temperature cracking during braking operations.