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来源：百度知道 编辑：UC知道 时间：2024/05/15 01:58:31
The paper is concerned with the surface integrity of a high speed ball end milled gamma titanium aluminide, Ti–45Al–2Nb–2Mn–0.8 vol.%, TiB2XD™ produced by Howmet, USA. Commercial interest in gamma titanium aluminide is centred mainly in the aerospace and automotive sectors. Possible component applications include, compressor blades, swirl nozzles, automotive engine valves and turbo impellers.
Machining tests were carried out on a Matsuura FX5 20,000 rpm, prismatic machining centre using 6 mm diameter, coated tungsten carbide ball end tooling. Operating parameters were used that were representative of finish machining. The majority of surface roughness values recorded were <1.5 μm Ra. Workpiece surface alterations included material pullout, fracture, smear and deformation of the lamellae. Microhardness evaluation of the subsurface indicated a hardened layer to a depth of 300 μm. Initial residual stress analysis, using ‘blind hole drilling’, showed that the surface c
Machining tests were carried out on a Matsuura FX5 20,000 rpm, prismatic machining centre using 6 mm diameter, coated tungsten carbide ball end tooling. Operating parameters were used that were representative of finish machining. The majority of surface roughness values recorded were <1.5 μm Ra. Workpiece surface alterations included material pullout, fracture, smear and deformation of the lamellae. Microhardness evaluation of the subsurface indicated a hardened layer to a depth of 300 μm. Initial residual stress analysis, using ‘blind hole drilling’, showed that the surface c
纸被随着一高速度球末端的表面完整性与碾磨第三位的钛aluminide,Ti?C45Al?C2Nb?C2Mn?C0.8卷%,TiB2XD™有关;被Howmet,美利坚合众国生产.商业的对第三位的钛aluminide的兴趣被在航空与航天空间和汽车的部分中主要集中.可能成分应用包含,压缩者叶片使管嘴,汽车的引擎阀门和涡轮机推动者打旋.
是用机器加工试验被从里面一Matsuura FX520,000 rpm继续进行棱柱的用机器加工使用6毫米心直径,在碳化钨球末端工具作业上涂.运作参数被使用那个是代表最后部分用机器加工.有表面粗糙价值记录多数是<1.5μm太阳神.Workpiece表面改变包含物质拉出,破裂薄片的污斑和损形.表面下的空间的Microhardness评价向一300μm的深度指示一变硬的层.使用‘blind洞drilling’开头残余应力分析被展示那表面含有有压缩力的压力>500MPa.碾磨参数,包括高速度,胁穿用((新工具磨损工具),有关残余应力工作部件的-尖刻的速度和角-的影响被进一步细察使用一个Taguchi正交的阵列.这个证明那胁穿用和尖刻的速度有最重要影响.