On the morning of September 12, 2023, Professor Kou Shengzhong from the School of Materials Science and Engineering at Lanzhou University of Technology visited the Interdisciplinary Science Research Center at DGUT for academic exchanges. Prior to the meeting, Vice Dean Li Runxia accompanied Professor Kou on a tour of the Center, providing a detailed introduction to its laboratories, experimental equipment, and main research directions. Following the tour, Vice Dean Li Runxia presided over the session, and Professor Kou delivered an academic report titled "Research on the Casting Process of Zr-Based Amorphous Alloy Flexible Gears" in the Center's conference room. The report was conducted in a hybrid format combining online and in-person participation.

Professor Kou Shengzhong Delivers Academic Report

Focusing on the casting process of Zr-based amorphous alloy flexible gears, the report introduced the innovative work accomplished by Professor Kou's team on the CSG-32-80 cup-shaped flexible gear. Professor Kou successfully addressed technical challenges in the machining of flexible gears, including combustion, oxidation, and crystallization, and produced qualified amorphous alloy flexible gear components. The machining accuracy of the gear teeth reached Grade 5 precision, qualifying them as precision-grade gears. In assembly testing, the maximum temperature rise was 15℃ and the maximum transmission error was 91.2 arc seconds, meeting the design requirements.

Center Faculty Members Attend the Report

After the presentation, Professor Kou presented samples of the amorphous alloy flexible gear components to the attending faculty members for on-site inspection. The faculty members engaged in lively exchanges and discussions on the preparation and application prospects of amorphous alloys mentioned in the report, as well as cutting-edge scientific issues in the field.

Professor Kou Introduces Amorphous Alloy Flexible Gear Component Samples to Center Faculty Members

Professor Kou Shengzhong is a professor and doctoral supervisor at the School of Materials Science and Engineering, Lanzhou University of Technology. He was a visiting scholar at Imperial College London in the United Kingdom from May 2004 to April 2005, and conducted collaborative research at the Department of Materials, University of Oxford, from January to March 2006 and January to March 2007. His research primarily focuses on the preparation and mechanical properties of bulk amorphous alloys. In the Zr-Cu-Ni-Al amorphous alloy system, he discovered an alloy composition, (Zr72Cu16.5Ni11.5)88Al12, which exhibits large room-temperature plasticity, with a room-temperature compressive plastic strain of 20.56%, a fracture strength of 2,030.7 MPa, and a hardness of 579.5 HV, demonstrating outstanding comprehensive mechanical properties. He was among the first in China to investigate the preparation and properties of metallic glass matrix composites using semi-solid processing methods. In the field of Zr-based amorphous alloy flexible gear fabrication, he solved technical challenges related to casting defects such as pores and cracks, as well as difficulties in the machining of amorphous alloys. Using casting and machining methods, he successfully manufactured amorphous alloy flexible gear components that met design specifications, and assembly and service testing confirmed that the performance of the Zr-based amorphous alloy flexible gears meets service requirements. His research findings provide theoretical and technical support for the industrialization of amorphous alloy flexible gears. In 1996, he received the Excellence in Teaching and Education Award for Young Teachers from the Ministry of Machinery Industry; in 1997, he was awarded a Second Prize of the Gansu Provincial Science and Technology Progress Award; and in 2006, he received the Gansu Provincial "Outstanding Young University Teacher Achievement Award."

Draft: Chen Jianjun

First Review: Liu Zhao / Second Review: Li Runxia / Third Review: Wang Biao