金属熔覆件侧面激光铣削整形工艺的研究

Study on Laser Milling Process Parameters for Sides of Laser Cladding Parts

为提高激光熔覆件的成形质量,采用激光铣削的处理方式来保证熔覆件侧面的光滑平整。为此,对熔覆件侧面铣削进行整形工艺试验研究,选择点间距、激光功率、脉宽和离焦量作为变量,通过正交试验来探究各工艺参数的权重并进行参数优化。用优化后的参数对熔覆件侧面进行铣削加工,得到铣削宽度为0.075mm,面粗糙度为2.319μm。相比原熔覆件,侧面成形质量得到明显改善,证明用激光铣削的方式提高熔覆件成形时侧面的光滑性和平整度是可行的。

In order to improve the quality of cladding parts,a method of laser milling was adopted herein to obtain smooth and flat plains of cladding parts.The technology of flank milling process of cladding parts was researched,and point space,laser power,pulse duration and defocusing amount were chosen as variables.The weight and optimization of process parameters were researched by orthogonal experiments.Then the optimized parameters were used to process cladding parts,milling width 0.075 mm and surface roughness 2.319μm were obtained.Compared with original cladding parts,the qualities of processed parts are better apparently,which proves the feasibility of improving surface quality by laser milling.