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that, the maximum joint strength was achieved by the tool of cylindrical pin profile having 8 mm pin diameter. Besides, the fragmental defects increased as the number of polygonal edges decreased, hence... and brittle relative to cylindrical tool pin profiles for same shoulder surface. Maximum hardness of HV 283 was obtained at weld made by the polygonal square pin profile. The hard and brittle......
θ is the clearance angle of the diamond tool, and H is the amplitude of the profile. However, there is a limitation on how much the clearance angle of the tool can be decreased. After a certain point...Trans. Nonferrous Met. Soc. China 22(2012) s820-s824 Microstructure of fast tool servo machining on copper alloy Hong LU1, Soo-chang CHOI2, Sang-min LEE1, Deug-woo LEE3 1. Department of Nano Fusion......
(FSW), because the geometrical condition of the tool pin including size and shape is strongly connected to the microstructure and mechanical performance of the weld. Tool wear occurs during FSW...EFFECT OF TOOL WEAR ON MICROSTRUCTURE, MECHANICAL PROPERTIES AND ACOUSTIC EMISSION OF FRICTION STIR WELDED 6061 Al ALLOY J. Zhang1,W.M. Zeng2,H.L. Wu2 (1.The University of Texas at El Paso......
Laser surface hardening of AISI H13 tool steel Jae-Ho LEE, Jeong-Hwan JANG, Byeong-Don JOO, Young-Myung SON, Young-Hoon MOON School of Mechanical Engineering, Pusan National University, Busan...; Abstract: An attempt was made to improve the surface hardness and wear properties of AISI H13 tool steel through solid solution hardening and refinement......
J. Cent. South Univ. (2016) 23: 2223-2229 DOI: 10.1007/s11771-016-3280-0 Simulation and experiment analysis on thermal deformation of tool system in single-point diamond turning of aluminum alloy...-Verlag Berlin Heidelberg 2016 Abstract: The aim of this work is to simulate thermal deformation of tool system and investigate the influence of cutting parameters on it in single-point diamond turning......
一种序列家族Profile HMM寻优的PSO陈雄峰闽江学院计算机科学系 福建福州350108摘 要:针对在训练一个序列家族的Profile HMM时经常会得到局部最优HMM的问题,也就是说找到全局最优Profile HMM的概率不高.通过分析训练一个序列家族Profile HMM方法的特点和Profile HMM本身的结构特点提出了一种结合多个局部最优或次优Profile HMM来寻找最优模型的PSO算法,以提高序列家族Profile HMM寻优的概率.关键词:Profile HMM;PSO;HMM模型;......
grid surface with profile wavelength of 350 μm and peak-to-valley amplitude of about 16 μm. Key words: fast tool servo system; diamond turning; sinusoidal grid surface; UV-moulding; contact angle 1... move the diamond tool along the roller for providing the feed rate, and a y-axis linear servo to translate the diamond tool for generating depth profile. The machining process of FTS is shown in Fig......
welding of AA6061 [J]. International Journal of Innovative Technology and Exploring Engineering, 2013, 3: 56-61. [10] BISHNOI R N, SAPRA P K, BHAMBHU R. Effect of tool pin profile on mechanical... to that of the base metal. In this work, double-sided FSW of AA6061 sheet was compared with its conventional single-sided one. An adjustable tool with different pin lengths (50%-95% of the sheet thickness......
(FSW), tool geometry plays an important role in joint quality. In order to improve mechanical properties of friction stir lap welding(FSLW) joint, a tool with a reverse-threaded pin was designed...Effect of Reverse-threaded Pin on Mechanical Properties of Friction Stir Lap Welded Alclad 2024 Aluminum AlloyYumei Yue1,Zhengwei Li1,Shude Ji1,2,Yongxian Huang2,Zhenlu Zhou11. Faculty of Aerospace......
work tool steel does not seem sufficient in this case. Fig.9 Profile measures on punch after 50 formings along lateral (a) and top (b) surfaces An other super-thickness is visible close to point 25... Trans. Nonferrous Met. Soc. China 20(2010) s713-s718 X38CrMoV5 hot-work tool steel as tool material for thixoforging of steel: Numerical and experimental evaluation A. RASSILI, J. C......