乐橙体育官网

On December 7, 2023, the second phase of the China Jinping Underground Laboratory Project was successfully completed and once again attracted widespread attention from the world.China's Jinping Underground Laboratory benefits from the favorable conditions of being covered by more than 2,400 meters of rock, which can perfectly shield all types of cosmic rays. The cosmic ray flux in the laboratory is only one 100 millionth of that on the earth's surface, which is much lower than similar products abroad. laboratory.This project is a major scientific and technological infrastructure project in the country’s “13th Five-Year Plan”. It is currently the deepest underground laboratory with the largest space and the lowest cosmic ray flux in the world. It provides a unique laboratory for dark matter detection, neutrino research and other disciplines. ideal experimental conditions.The ultra-pure low-background stainless steel materials produced by TISCO are showing their talents in Jinping laboratory.

China Jinping Underground Laboratory Phase I The first phase of the laboratory project was completed on December 12, 2010. The "PandaX" series of detector pressure vessels jointly developed by Shanghai Jiao Tong University and dozens of domestic scientific research institutions all use ultra-pure low-temperature ultrasonic materials produced by Taiyuan Iron and Steel Co., Ltd. Made of background stainless steel material.After the first phase of China Jinping Underground Laboratory was completed and put into operation, various experimental results have been remarkable with the guarantee of low background stainless steel materials. It has produced a number of world-class scientific research results and won praise from General Secretary Xi.The results of dark matter detection experiments have been published in many top academic journals at home and abroad, including Nature. This experimental environment combines various advantages such as "ultra-low cosmic ray flux", "ultra-clean space" and "ultra-low environmental radiation". In order to control the radiation background of the laboratory to the maximum extent, stainless steel, cement, sand, etc. are used. The materials are all specially customized.After learning about the project requirements, the Taiyuan Special Steel Stainless Steel team organized a one-by-one survey of the radioactivity levels of the three stainless steel smelting production lines and raw and auxiliary materials such as lime, dolomite, blast furnace hot metal, and alloys, and determined that the northern area of ​​the Second Steelmaking Plant would adopt three strips. The stainless steel smelted with blast furnace hot metal, imported ferrochrome and electrolytic nickel as the main raw materials has the lowest background level. At the same time, it takes advantage of the large furnace capacity and good consistency between batches, providing a solid guarantee for the first phase of the laboratory project. During the product development period, TISCO's special stainless steel team made dozens of visits to the product user unit, Shanghai Jiao Tong University, and the quality inspection and appraisal unit, the Institute of High Energy Physics, Chinese Academy of Sciences. After more than ten experiments and explorations, the product quality finally exceeded the design requirements. With the completion of the second phase of the Jinping Underground Laboratory Project in China, TISCO’s Special Steel Development Business Department will continue to track the laboratory’s special material needs and actively develop mission-type high-end materials needed for “big country heavy equipment”. I believe TISCO Steel and stainless steel products will continue to shine in Jinping's large facility base with their excellent quality of ultra-high purity and ultra-low radioactive element content.