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From now on, the column "Cultivating New Opportunities and Opening Up New Games" will be launched to focus on the whole system's efforts to open up new growth points and create new driving forces for development, and to pool the efforts of the whole system to win the "double victory" of epidemic prevention and control and economic development. Powerful.
Recently, my country's first subway line using permanent magnet traction system, Changsha Metro Line 5, has been officially put into operation, marking the arrival of the permanent magnet era for China's subways. The samarium cobalt permanent magnet material used in this permanent magnet traction system was developed by the China Electronics Technology Institute of Acoustics and Optoelectronics 9.
"The high-performance rare earth samarium cobalt permanent magnet material used in the permanent magnet traction system has the characteristics of high temperature resistance, high magnetic performance, small size, and stable inertial conductivity. It can also ensure extremely stable performance in the high temperature range from minus 250 degrees Celsius to 350 degrees Celsius. The strong magnetism ensures that the permanent magnet traction system will not be unable to operate normally due to loss of magnetism.
"A strong man cannot pull apart a permanent magnet that is about the size of a chess piece and is completely adsorbed together." Relevant technical experts from China Electronics Technology said that permanent magnets made of permanent magnet materials contain huge energy despite their small size. , a cylindrical permanent magnet with a diameter of 3.6 cm and a height of about 3.2 cm adsorbs and connects both ends of the wire rope, and hangs them on the tail of one car and the head of another car whose volume and weight are larger than the car in front. When the car in front starts, , with the help of the pulling force of the permanent magnet, the car behind will be successfully dragged.
"Not only rail transportation, samarium cobalt permanent magnet materials are also used in aerospace, communications, radar, navigation and other fields." Related technical experts from China Electronics Technology said that taking this application of permanent magnet traction systems as an opportunity, China Electronics Technology will Continue to increase research efforts on rare earth permanent magnet materials, strengthen the promotion of rare earth permanent magnet materials in future new energy vehicles, wind power and other fields, and bring more changes to people's travel and life.
