摘要
通过与切槽-推挤复合加工技术进行对比,对切槽-推磨复合加工技术开展了试验研究。通过测试不同凸缘厚度、凹槽深度、进给速度、砂轮转速及工件转速下的轴向力,得到了轴向力的变化规律。利用扫描电子显微镜(Scanning Electron Microscopy,SEM)观察了氮化硅陶瓷试件切槽表面的微裂纹形貌。对2种技术的已加工表面形貌进行了对比观察,结果表明:切槽-推磨复合加工机理以外力促使凸缘脆性断裂为主,同时伴随砂轮磨削残余材料,且该方法要优于切槽-推挤复合加工技术。
Through comparing with the grooving-extruding process technology , an experimental scheme a-bout grooving-grinding process technology is designed .By measuring axial force under different flange thickness, groove depth, feed rate, speed of grinding wheel and workpiece speed , the variation laws of axial force are found .The morphology of surface microcrack after grooving is observed by Scanning Elec -tron Microscopy ( SEM) .The processed surface topography of both technologies is comparatively observed . The results show that the material is removed mainly as brittle fracture mode followed with grinding residual material .Grooving-grinding process technology is better than grooving-extruding process technology .
出处
《装甲兵工程学院学报》
2016年第4期83-87,共5页
Journal of Academy of Armored Force Engineering
基金
国家自然科学基金资助项目(51475474)
关键词
工程陶瓷
裂纹扩展
轴向力
engineering ceramics
crack growth
axial force
