On June 21, 2020, the 600 km/h high-speed maglev test sample car developed by CRRC Sifang Co., Ltd. was successfully tested on the maglev test line of the Jiading campus of Tongji University. This marks an important new breakthrough in my country's high-speed maglev research and development.
Completed more than 200 test points in seven major projects
Coming to the high-speed maglev test line, the test sample car carried out system joint debugging for the first time, and carried out dynamic operation tests under various working conditions, including different track beams and turnouts, small curves, ramps, zone switching, etc., and completed seven major projects More than 200 test items have carried out comprehensive tests on key performances such as suspension guidance, speed measurement positioning, vehicle-rail coupling, ground traction, and vehicle-ground communication. Under the test conditions of multiple working conditions, the suspension guidance of the vehicle is stable and the operating condition is good. The key technical indicators meet the design requirements and meet the design expectations. The successful trial run of the test prototype achieved a breakthrough from static to dynamic operation, and obtained a large amount of key data. The key performance of the high-speed maglev system and core components has been initially verified, which will provide the development and optimization of the subsequent high-speed maglev engineering prototype. Important technical support.
The "permanent magnet" characteristic is the key to the speed increase of the magnetic levitation train. The permanent magnet is implanted into the car to create a suspension effect through the characteristic of the magnet being repulsive. The rare earth permanent magnet material is the key to the super high-speed rail and an important fulcrum for carrying this technology.
Rare earth permanent magnet materials make super maglev train
Maglev trains and tracks require a large number of rare earth permanent magnet materials, namely rare earth permanent magnet alloys, containing rare earth metals as alloying elements. Its permanent magnetism comes from certain special intermetallic compounds formed by rare earth and 3d transition group metals.
There are more than ten kinds of raw materials for the magnetic steel required for permanent magnetic tracks, including the fusion of rare earth materials. Each piece of 80 mm × 50 mm × 30 mm magnetic steel has trillions of magnetic units, and the magnetic units need to be neatly arranged to release the magnetic force in one direction. This magnetic material product was developed by HZYC Permanent Magnetic Material Technology Group.