Recently, CRRC Sifang Co., Ltd., a subsidiary of CRRC, and Qingdao Metro Group jointly developedThe world's first carbon fiber subway train "CETROVO 1.0 Carbon Star Express" was officially launched on Qingdao Metro Line 1 and put into commercial operation.The body of the "Carbon Star Express" is mainly colored black, purple, yellow and blue. The interior of the car is equipped with black carbon fiber seats, armrests and driver's cab console, which is full of technology.

The main load-bearing structures such as the car body and bogie frame of the "Carbon Star Express Rail" are all made of carbon fiber composite materials. It is the first time in the world that carbon fiber composite materials have been used in the main load-bearing structure of subway vehicles for commercial passenger transportation.

Compared with traditional subways, this carbon fiber subway train has been completely upgraded and has significant advantages such as being lighter and more energy-saving, more comfortable to ride, higher in strength, less wheel-rail wear, and lower in operation and maintenance costs.

Specifically, by using carbon fiber composite materials, the car has achieved significant "slimming".

Compared with traditional metal vehicles, the body weight is reduced by 25%, the bogie frame is reduced by 50%, and the vehicle is reduced by about 11%. The body is lighter and more energy-saving when running, with operating energy consumption reduced by 7%.

Thanks to the use of carbon fiber composite materials, the vehicle has better vibration reduction and isolation effects and a smoother ride.

For the first time in the field of commercial subway trains, active radial bogie technology is used, which can actively control the wheels to pass curves along the radial direction.The "howling" when cornering is greatly reduced, the noise when passing curves is reduced by 15 decibels, and the noise in the car is reduced by 2 decibels, making the operation quieter.

Compared with the metal material body, the carbon fiber train body has stronger strength and higher safety factor. At the same time, the bogie frame made of carbon fiber composite materials has stronger impact resistance, fatigue resistance and longer structural life.

The lighter carbon fiber body reduces the vehicle axle weight and reduces wheel-rail force by more than 15%, thereby reducing wheel-rail wear.The use of active radial bogies also reduces wear on wheels and tracks.

There is less wear on the wheels and rails, and maintenance on the vehicle wheelsets and tracks is significantly reduced.

At the same time, the train applies digital twin technology to build a carbon fiber train SmartCare intelligent operation and maintenance platform, which realizes intelligent detection of vehicle faults, intelligent assessment of health status and optimization of repair processes, reducing maintenance costs.

By using new materials and new technologies, the vehicle's life cycle maintenance costs are reduced by 22%.