切削参数对Ti-6Al-4V锻件和粉末冶金工件表面.PDF
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切削参数对Ti 6Al 4V锻件与粉末冶金工件表面
粗糙度的影响对比
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孙富建 屈盛官 邓朝晖 李小强
(1 湖南科技大学智能制造研究院ꎬ湘潭 411201)
(2 华南理工大学机械与汽车工程学院ꎬ广州 510641)
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文 摘 表征了已加工Ti 6Al 4V锻件和粉末冶金工件表面形貌ꎬ利用正交回归试验得到了两种材料表
面粗糙度值的数学模型ꎬ经过显著性检验两个数学模型能够准确地预测表面粗糙度值变化趋势ꎮ 结果表明ꎬTi
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6Al 4V锻件表面出现了进给划痕、切屑碎片和表面撕裂缺陷ꎬ粉末冶金材料表面出现了除了进给划痕、切屑
碎片和撕裂外的微孔隙缺陷ꎻ两种工件表面粗糙度值均受到进给量的影响程度最大ꎬ同时粉末冶金材料内部残
余微孔隙的存在导致切削速度对其表面粗糙度值的影响程度比较大ꎮ
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关键词 Ti 6Al 4Vꎬ锻件ꎬ粉末冶金材料ꎬ表面形貌ꎬ表面粗糙度
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中图分类号:TG506.9 DOI:10.12044/ j.issn.1007 2330.2017.06.010
Comparative on Influence of Cutting Parameters on Surface Roughness of
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Ti 6Al 4V Forging and Powder Metallurgy Workpieces
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SUN Fujian QU Shengguan DENGZhaohui LI Xiaoqiang
(1 Intelligent Manufacturing Institute of HNUSTꎬHunan University of Science and TechnologyꎬXiangtan 411201)
(2 Schoolo of Mechanical and Automotive EngineeringꎬSouth China University of TechnologyꎬGuangzhou 510641)
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Abstract In this paperꎬsurface morphologies of Ti 6Al 4V forging and powder metallurgy workpieces were
characterizedꎬsurface roughness mathematical models of the two machined workpieceswere developed using orthogo ̄
nal regression testꎬandthesignificancesofthemathematicalmodelswereverifiedꎬthesurfaceroughnessmathematical
models could predict the surface roughness changing trends. The experimental results showed that feed scratchꎬchip
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