To choose the most suitable method to solve process parameter optimization of ultrasonic rolling extrusion, 42CrMo material was taken as research object. Based on a four-factor five-level orthogonal experiment, response surface used establish prediction models roughness, residual stress, and work hardening degree. obtain better Pareto front, resulting in distribution convergence solution set, s...

Hardox® 450 is pre-hardened structural steel with high hardness and mechanical strength, designed to resist under abrasion wear, cracks, breakages. This material provides a longer service life for crushers, buckets, gears due its excellent properties, which result in low machinability. Moreover, the knowledge about machining this limited, justifying further investigation. Thus, study aims ...