Typical Application Scenarios of Cast Steel Components in Rail Transit

Bogies: The integral cast bogie is the core of heavy-duty locomotives, responsible for load-bearing, guidance, and shock absorption functions.

Side Frames and Rocker Beams: As key components of freight car bogies, they bear alternating loads and must meet high fatigue reliability requirements.

Sliding Plates: Used to support the switch rails in turnouts, the integral casting structure eliminates the risk of weld detachment, with a top surface hardness of 400–500 HB.

Brake Discs: Cast steel brake discs for high-speed trains need to simultaneously ensure high strength, thermal stability, and lightweight design.