Study on Surface Morphology of Nickel-Based Superalloy GH4169 by End-Milling
段春争 1吕启东 1韩世凯1
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作者信息
1. 大连理工大学,大连 116024
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摘要
研究镍基高温合金GH4169 端铣加工表面形貌影响因素,对控制GH4169 的加工表面粗糙度和提高GH4169 加工质量有着重要意义.基于单因素端铣试验,探明了铣削速度、铣削深度、每齿进给量及铣削宽度对表面粗糙度和三维表面形貌的影响机理及规律.研究表明,对表面粗糙度的影响程度由大到小依次为每齿进给量、铣削宽度、铣削速度、铣削深度;加工表面呈现出纵横相间的纹理,且对表面纹理深度的影响程度由大到小依次为铣削速度、铣削深度、每齿进给量、铣削宽度;结合加工表面粗糙度与三维表面形貌选取最佳加工参数:铣削速度V=100 m/min,铣削深度t=0.1 mm,每齿进给量fz=0.025 mm/z,铣削宽度aw=5 mm.
Abstract
It is of great significance to study the influencing factors of the surface topography of nickel-based superalloy GH4169 processed by end-milling to control the surface roughness and improve the machining quality of GH4169.Based on single-factor end-milling experiments,the effects of milling speed,milling depth,feed per tooth and milling width on surface roughness and 3D surface topography were investigated.The results show that the influence degree on surface roughness is as follows:Feed per tooth,milling width,milling speed,milling depth,etc.The machined surface mostly presents the texture of vertical and horizontal phase,and the degree of influence on the surface texture depth is as follows:Milling speed,milling depth,feed per tooth,milling width;Combined with the processing surface roughness and 3D surface topography,the best processing parameters are:Milling speed V=100 m/min,milling depth t=0.1 mm,feed per tooth fz=0.025 mm/z,milling width aw=5 mm.
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