SHAKLDOR YUZALARGA LAZERLI SO‘NGI ISHLOV BERISHDA EKSPERIMENTAL TADQIQOT REJASINI ISHLAB CHIQISH
Keywords:
laser machining, shaped surfaces, KF301 5LN, Taguchi L27, ANOVA, RSM, surface roughness Ra, HAZ, experimental design, titanium alloy.Abstract
Background: Shaped-surface components (turbine blades, orthopaedic implants, optical lenses) demand surface roughness Ra ≤ 0.1– 0.4 μm and geometric accuracy ±0.002–0.01 mm. Existing literature lacks an optimised multi-parameter model for 5-axis finish laser machining on the KF301 5LN centre.
Objective: To develop a scientifically grounded experimental research plan for finish laser machining of shaped surfaces and to define the statistical methodology for parameter optimisation.
Methods: Taguchi L27 orthogonal array (27 runs per material × 3 materials × 3 surface types = 243 runs, 486 with replicates); ANOVA for factor significance; Response Surface Methodology (RSM) with OLS regression; Signal-to-Noise ratio analysis (Smaller-the-Better); Minitab 21 software.
Expected results: Ra ≤ 0.10 μm and HAZ ≤ 6 μm for VT6 titanium (ISO 10993); R² ≥ 0.95 empirical model; geometric error ±0.003 mm for 5-axis normal orientation.
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