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Online since: June 2012
Authors: Manabu Iwai, Kiyoshi Suzuki, Shinichi Ninomiya, Takuya Takada, Zhi Rong Zhou
Comparison of EDM Properties with Various Other Tool Materials Die Steel (SKD11 in JIS) and tungsten carbide were EDMed using the conditions (ui=90 V, SV=60 V, iP=1.5 A, te/to=5/50 µs, Cu electrode [+]) thought to be suitable and standard for each material, and the results were compared with those of EC-PCD010 and C-PCD010 (Fig.10).
From the fact that machining efficiency of EC-PCD, SKD11 and tungsten carbide was 0.025 mm3/min, 0.052 mm3/min and 0.046 mm3/min, respectively, it was understood that EDM machinability of EC-PCD is almost on the same level of general tool materials.
In addition, it was shown that EC-PCD could be EDM processed in a similar way of EDMing conventional tool materials such as WC or SKD.
This work was partly supported by Japan Society for the Promotion of Science (Grant-in-Aid for Young Scientists (B)) and Machine Tool Engineering Foundation.
Nabekura, Electrical discharge truing for sintered polycrystalline diamond Tool, Journal of the Japan Society of Electrical Machining Engineers, 44 (2010) 17-24.
Online since: October 2015
Authors: Xiao Fan Yang, Ju Dong Liu, Guo Hong Yan, You Sheng Li, Dong Min Yu
Carbon fiber-reinforced plastics (CFRP) are typical difficult-to-machine materials, which is easy to produce many defects such as burrs, dilacerations, layering in milling process.
Diamond coating is a kind of superhard multifunctional material.
It has become the best idea material for special cutter of machining CFRP[5].
But the fiber layer is difficult to completely cut off at the upper surface of material, due to lacking the support of material.
Deger: International Journal of Machine Tools & Manufacture, (2012), No.5, pp. 79-93
Online since: February 2012
Authors: Xiao Hua Wang, Yuan Sheng Qi, Jun Sun
Basic steps for example: create, applied materials, add constraint, the applied load, mesh generation, operation analysis, and output the results[4].
According to the results of its optimization, both quickly and saves materials.
Journal of Kunming University of Science and Technology , 2007.4 [5]GUO Wei-dong .
Online since: August 2014
Authors: Xiao Bing Wang
Therefore, when stirring low-density granules, the paddle can be installed on the bottom of the stirred tank to help the materials mixing.
Therefore, when stirring low-density granules, the paddle can be installed on the bottom of the stirred tank to help the materials mixing.
Journal of Chemical Engineering of Japan, 2011, 44(4): 224-232 [3] E Renaud, L Alain.
Chemical Engineering Science, 2006, 61: 2771-2779
Online since: November 2006
Authors: Zhu Feng Yue, Yong Shou Liu, Xiao Jun Shao
The material properties of this CFRP (carbon fiber reinforced plastic) specimen list in Tab.1.
Tab.1 Material properties (CFRP)[Gpa] E11 E22 12µ G12,G31 G23 XT XC YT YC SC 129 9.1 0.31 5.67 3.5 2.507 1.201 0.0618 0.186 0.0848 Damage law Failure modes in composite structure depend on ply orientation, loading direction and structure geometry.
Acknowledgement This work is supported by National Natural Science Foundation of China (50375124, 10472094) and the fund of DPOP in NPU(04XD0104).
[5] Chang, F-K., L.B.Lessard: Journal of Composite Materials, Vol.25(1991),p.2
Online since: November 2015
Authors: Yan Song, Hong Ying Yang, Lin Lin Tong
Bioleaching of Complex Refractory Gold Ore Concentrate of China: Comparison of Shake Flask and Continuous Bioreactor Yan Songa, Hongying Yangb*, Linlin Tong School of Materials and Metallurgy, Northeastern University, 3-11 Wenhua Road, Shenyang, P.
Experimental setup Materials.
Acknowledgements The authors acknowledge the financial support of the National Natural Science Foundation of China (51174062 and 51374066); Fundamental Research Funds for the Central Universities, China(N110602005).
Gentina and Fernando Acevedo: Biochemical Engineering Journal (2004) Vol. 19, p. 33.
Online since: December 2013
Authors: Jing Hua Liu, Gui Chuan Hu
Thermo-Mechanical Couple Analysis of Cylinder Head Joint with Quadratic Contact Guichuan Hu, Jinghua Liu College of Mechanical and Dynamic Engineering, Chongqing University of Science and Technology, Chongqing 401331, China cqhugc@163.com, cqliujh64@163.com Keyword: Finite element model, Thermo-mechanical couple, Cylinder head joint, Contact, Heat transfer Abstract.
Using the mechanical equivalent of heat (M ), the rate of specific volumetric flux is: (2) Of course, all mechanical and thermal material properties can be temperature dependent.
Fig.3 Mechanical Boundary Conditions Fig.4 Contour Plot of the Gasket Pressure applied to the Cylinder Head Joint at the end of the Third Load case Material Properties The definition of the membrane properties and the thermal expansion coefficient of the gasket is separated from the definition of the properties in the thickness direction and the transverse shear behavior. the membrane stiffness of the body of gasket is 120 MPa and its thermal expansion coefficient is 5×10-5per ºC, while for the ring the membrane modulus is 100 MPa and the thermal expansion coefficient is 1×10-4per ºC.
Therefore, two isotropic materials are created with the membrane properties and thermal expansion coefficient of the two gasket regions.
Journal of Manufacturing Processes,2003,5(2):170-184.
Online since: February 2011
Authors: Gui Dan Wei, Zhen De Tian, Chui Can Chen, Hong Dong Yu, Xiao Hong Liu
Therefore, some approaches can be adopted to achieve the best heating efficiency, such as: creating high-frequency alternating electromagnetic field to generate a powerful magnetic induction; improving conductivity of metal, especially alloys with low resistivity and good magnetoconductivity, especially those with strong magnetic induction activated by low current, namely, alloys with high B/H; in the case of heating penal, high permeability metal should be used, or common metal plated with high permeability material.
The material of the magnet is Re2T14B, sized by.
By using SPSS for analyzing the relationship between the temperature amplitude and the factors[8], together with the interaction of these factors, a relational expression was derived as follows: (8) Where T - temperature of the Heating Plate, oC p - pairs of magnetic poles s - gap between turntable and heating plate, mm n - The speed of turntable, r/min According to Eq.(8), to a certain material, The temperature of heating plate is proportional to p and n, and decrease with the increasing of s.
However, in order to achieve much heat energy, higher rated speed of the wind turbines is required, plus permanent magnet material with high energy product and reasonable design of magnetic path for high air-gap flux density.
Solar.Vol.9 (2008),p.23.In Chinese [2] Ruigui Qi&Jingchun Li&Lei Li.The Study of Wind Induced Heat System .The Academic Journal of Liaoning Technical University(JCR Science Edition)Vol.2(2001),p.20.
Online since: March 2011
Authors: Roberta Nipoti, Francesco Moscatelli, R. Rizzoli, Fulvio Mancarella, S. Zampolli
Introduction Pyrolyzed photo-resist films are carbonaceous materials that are the object of intensive studies for their numerous and very different applications.
After an annealing at 1800°C for 5 min the Ccap material Fig. 4.
Smith: Journal of The Electrochemical Society Vol. 150(3) (2003), p.
Schroder: Semiconductor Material and Device Characterization, 3rd Ed., John Wiley & Sons, New York (2006), p. 135 [7] F.
Nipoti: Semiconductor Science and Technology Vol. 18 (2003), p. 554 [8] R.
Online since: October 2011
Authors: Cheng Ji, Qiu E Cao, Rui Ya Yang, Huan Zhi, Hua Yi Jiang, Yi Nan Zhang
Experimental Materials.
Science & Technology in Chemical Industry, 2006, 14(3):9~11.
In Chinese [4] Zhang Z H, Shan Y B, Wang J, et al.Journal of Hazardous Materials, 2007,147(1-2):325-333.