On the evening of February 4, at the opening ceremony of the 24th Winter Olympic Games in Beijing, as the last torchbearer put the torch into the center of the "snowflake", the star-studded "snowflake" bloomed.
Behind the burning torch, the 3D printing technology of Professor Su Yanqing's team at the School of Materials Science and Technology of Harbin Institute of Technology has effectively helped the research and development and manufacture of the zero-carbon emission torch for the Beijing Winter Olympics.
The Beijing Winter Olympics "flying" the torch
The "flying" torch of the Beijing Winter Olympics is shaped like a ribbon fluttering, swirling and rising, and finally appearing as a flying flame, full of beautiful meanings. The artistic shape further compresses the interior space and increases the difficulty of torch design, processing and manufacturing. The "high value" of the main torch requires excellent technical support, not only to show the lightness of the torch, but also to achieve the stability of the overall structure.
3D printed torch inner streamer
China Aerospace Science and Technology Group Co., Ltd. and Harbin Institute of Technology and Hart Three-dimensional Technology Co., Ltd. jointly tackled the key problems, the school has played the technical advantages in the research and development of new materials, precision forming technology and equipment research and development for many years, and finally selected the use of 3D printing technology to develop the torch, and conquered the problem of precision forming of the torch in the development process.
Through the testing and optimization of a variety of 3D printing materials, Professor Su Yanqing's team optimized the forming process of the internal structure of the torch, systematically verified and improved the 3D printing process of the burner, and finally successfully prepared the hydrogen torch and its combustion system that fully met the requirements, ensuring the reliability of the main torch combustion of the Winter Olympics.
3D printed flare outer streamer
In addition, in order to ensure the appearance quality and combustion effect of the torch, in addition to the requirements of accurate dimensional accuracy, it is also necessary to ensure that the density inside the 3D printed torch is close to forging to ensure the air tightness requirements of the internal burner and the polishing quality requirements of the flare surface. Professor Su Yanqing's team and Hart's three-dimensional technical team have improved the 3D printing equipment, supporting the development of a new printing process, further improving the printing efficiency and the internal quality of the printing torch, and meeting all aspects of the requirements of the torch production.
Source: Guangming Daily