The wear resistance of gears plays a crucial role in ensuring the longevity and efficiency of machinery, particularly in industries like textile manufacturing, where gears are subjected to continuous operation under high loads and long-term motion. R6M5 steel, commonly used for high-performance gears, possesses excellent hardness and durability but still faces wear challenges under extreme conditions. Laser processing has emerged as an effective technique to enhance the wear resistance of such materials through precise surface modification.
This study investigates laser processing parameters for a miniature-sized (10 mm diameter) R6M5 steel gear to achieve the desired melting depth and improved surface properties. The objective is to enhance wear resistance while maintaining the structural integrity of the gear. Experiments were conducted using laser powers ranging from 1.5 to 2.4 kW and scanning speeds from 15 to 25 mm/s. The results were analyzed to identify the best-performing combination of parameters within this range.
The study found that using a 2.4 kW power and 25 mm/s speed achieved a melting depth of 0.30 mm, enhancing the surface hardness without causing excessive thermal distortion. This combination significantly improved the gear's wear resistance, making it more suitable for high-demand applications in textile manufacturing. However, as these were the maximum tested values, further studies are needed to determine whether increasing power or speed beyond this range would lead to additional improvements or adverse effects.
In conclusion, laser processing with these parameters offers a reliable method for improving the durability and wear resistance of mini R6M5 steel gears, providing a foundation for further optimization and application in high-demand industries.