The development of automobile gear heat treatment technology not only implements more strict control on product quality, but also pays more attention to energy conservation and environmental protection. The 2020 heat treatment technology development roadmap of the United States also puts forward this requirement for gear treatment. At the same time, in the information age, the gear heat treatment process will make more full use of computer technology to make the heat treatment production management, process control, process design and quality prediction and analysis highly digital and intelligent. The development trend of automobile gear heat treatment process will be in the direction of high quality, low energy consumption, environmental protection and intelligence.
Research on high-quality gear heat treatment deformation and control technology, and develop new steel materials and precision gears for automobile gears. It is mainly manifested in: (1) uniformity of materials, that is, materials are required to have good uniformity of composition and structure; (2) Temperature field and fluid field, that is, the continuous improvement of temperature field and various fluid fields, such as the improvement of gas flow field of carburizing, nitriding, carbonitriding and quenching liquid fluid field.
Low energy consumption: (1) research and development of advanced equipment for gear heat treatment, such as developing better heat-resistant and heat preservation and energy-saving materials for furnace lining, so as to reduce the temperature rise and heat loss of furnace wall as much as possible; (2) Develop new automobile gear forming processes, such as net forming technology; (3) Comprehensive utilization of waste heat, such as the utilization of forging waste heat.
Environmental protection: research and develop new gear heat treatment processes, such as low-pressure vacuum carburizing, dual frequency induction quenching, ion nitriding and other technologies.
Intellectualization: intellectualization is the inevitable trend of the development of gear heat treatment control technology. Computer sensor intelligent library will be built as the core of intelligent heat treatment. It is mainly manifested in: (1) the system automatically generates the process according to the material and technical requirements of the parts; (2) Complete closed-loop automatic control of production process; (3) Prediction and prediction of heat treatment quality of parts; (4) Automatic diagnosis and disposal of system faults; (5) Online adaptive and emergency response capabilities, such as the development of nitrogen potential sensors for ion nitriding and carbonitriding and carbon potential sensors for low-pressure carburizing.