The world's first commercially operated carbon fiber metro train started passenger operation on Qing

According to the Rail Transit Exhibition, the world's first carbon fiber metro train for commercial operation independently developed by China "CETROVO 1.0 Carbon Star Express Rail" was operated on Qingdao Metro Line 1 today.

With a total length of about 60 kilometers and 41 stations, Qingdao Metro Line 1 is the north-south backbone line of Qingdao, connecting the West Coast New Area, Shinan District, Shibei District, Licang District and Chengyang District.

According to reports, traditional subway vehicles mainly use steel, aluminum alloy and other metal materials, while the new carbon fiber has the advantages of lightweight, high strength, fatigue resistance, corrosion resistance, etc., and the strength is more than 5 times that of steel, but the weight is less than 1/4 of steel. Carbon fibre metro trains reach a top speed of 140 km/h, which is a significant increase compared to the 90 km/h of a conventional metro travel.

By using carbon fiber composite materials, the "CETROVO 1.0 Carbon Star Express" has achieved significant weight reduction, with a 25% weight reduction for the car body, a 50% weight reduction for the bogie frame, an 11% weight reduction for the whole vehicle, a 7% reduction in operating energy consumption, and a reduction of about 130 tons of CO2 emissions per train per year, which is equivalent to planting 101 acres of trees.

The car uses a new carbon fiber composite material with higher performance to reduce weight and improve body strength. At the same time, compared with traditional metal materials, carbon fiber bogie frame components have stronger impact resistance, better fatigue resistance, and prolong the service life of the structure.

The lighter body not only meets the stricter axle load restrictions of the line, but also reduces wear and tear on the wheels and tracks. The car also adopts active radial technology, which can actively control the wheelset of the vehicle along the radial passing curve, reducing wheel and rail wear and noise. The use of more wear-resistant, heat-resistant carbon-ceramic brake discs to achieve weight reduction and meet braking performance requirements.

At the same time, thanks to the application of carbon fiber lightweight materials and new technologies, the wear of wheels and rails of carbon fiber metro trains is reduced, and the maintenance of vehicles and tracks is reduced. At the same time, through the application of digital twin technology, the SmartCare intelligent operation and maintenance platform for carbon fiber trains is built, which realizes the self-detection and self-diagnosis of vehicle safety, structural health and service performance, improves operation and maintenance efficiency, and reduces operation and maintenance costs. Train life-cycle maintenance costs were reduced by 22%.

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