激光刻蚀犁铧钢表面粗糙度分析

Analysis of Plowshare Iron Surface Roughness Etched by Laser

本文将荷叶图像微观轮廓作为源图像,利用激光标牌机对耕作机具犁铧钢材料表面刻蚀,采用探针法测定刻蚀前后的表面粗糙度,用轮廓最大高度(Ry)、微观不平度十点高度(Rz)和轮廓算术平均值偏差(Ra)3个参数对犁铧钢表面粗糙度进行分析,并将激光标牌机刻蚀和未刻蚀的犁铧钢表面进行对比,结果表明:刻蚀后的犁铧钢表面粗糙度更大;刻蚀电流越大粗糙度提高越明显;图像阈值的提高对表面粗糙度有多重影响。

The microscopic images outline of a lotus leaf is thought as the source image, surface plowshare iron in farming machinery is etched by laser tag machine, surface roughness of plowshare iron was measured by a fine sty-lus method and analysed with three surface roughness parameters, which were maximum individual peak to valley height （Ry）, average roughness （Rz） and mean peak to-valley （Ra）. Compared with the etched surface of and the original part, results showed that the etched surface of plowshare iron was rougher than the original part. If the current intensity is larger,the surface is rougher.Image thresholding increaseing surface roughness is influenced by the multiple factors.