Dry hob with heat transfer enhancement based on field synergy and its temperature field distribution

Excessive heat accumulation is an essential factor in dry hob wear. Given this problem, this research is conducted on a dry hob with heat transfer enhancement by field synergy (FS-HTE dry hob). Firstly, through the combination of simulation and thermal image reconstruction, the heat accumulation behavior and thermal-induced wear mechanism are investigated for traditional dry hob. Then, using field synergy theory, a three-dimensional solid model is established for FS-HTE dry hob based on the structure of traditional dry hob. Finally, a process experiment by fluid-solid coupling simulation is executed to explore the temperature field distribution law of the FS-HTE dry hob as well as the temperature control mechanism. Results show that the minimum average temperature can be reached for the FS-HTE dry hob characterized by 0 & DEG; synergy angle. It is also beneficial to suppress the thermal-induced wear benefiting from the characteristics of value and distribution law for the high-temperature region. The research demonstrates a potential method for the thermal-induced wear suppression of dry hob in green dry hobbing.