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Online since: August 2005
Authors: Kunio Shimada, Y.C. Wong, Yong Bo Wu, M. Kato
Umehara, etc.: J. of Magnetism and Magnetic Materials, Vol. 149 (1995), p. 185
Shimada, etc.: Journal of Magnetism and Magnetic Materials, Vol. 265 (2003), p.242
Conf. & Awareness Workshop on Behaviour of Materials in Machining, (2002), p. 293
Shimada, etc.: J. of Magnetism and Magnetic Materials, Vol. 262 (2003), p. 242
Shimada, etc.: Smart Materials and Structures, Vol.12 (2003), p.297.
Online since: June 2012
Authors: Bao Ku Qi, Jing Ming Zhao, Yu Qu
The so-called production cost means that the replacement of high energy-consuming equipment and traditional building materials and other related measures cost of energy saving and carbon reduction according to the national requirement of related mandatory index in the construction process of low-carbon building.
Compared with the traditional construction phrase, the additional cost of the contractor in the process of the low-carbon building mainly includes the construction control costs of the quality and the energy consumption, such as the construction waste’s disposal cost, the control costs of the construction noise, dust, materials, labor resources and the rational use of the construction machinery, and the energy saving equipments’ procurement as well as installation, etc.
The use of low-carbon building materials and the low-carbon energy-efficient equipment’s procurement and installation are the focus of the additional cost for the contractor in the construction process of the low-carbon building.
Combined with the above cost analysis, the cost change formula of the low-carbon building can be expressed as follows: ΔC=ΔCa1+ΔCa2-ΔCr (1) In formula (1), ΔCa1 represents the increase of the production cost, it means that after deducting the original equipment residual value and the original materials cost, we get the measure cost.
China Civil Engineering Journal, 2005, (4).
Online since: January 2014
Authors: Xiao Chun Peng, Yan Yu Wu, Xiao Ying Hu, Yang Zheng
Identification of environmental risks of enterprises processing and utilizing the imported scrap metals The enterprises processing and utilizing imported scrap metals face environmental risks mainly in the storage of raw materials and products, their transportation, processing and utilizing as well as pollution treatment.
The rainwater may corrode the surface of metals, producing metal ion and further polluting surface runoff when the metals are exposed to rain. 2) The plastic fragments left after disassembly are inflammable materials with poor thermostability.
Raw material hazard index is used to describe the environmental hazard that may arise from the raw materials of imported metal and electrical appliance scraps, scrap wires, cables and motors, the assessment of which will be made mainly based on the rate of dangerous wastes contained in the raw materials and the proportion of unrecyclable wastes.
The environmental pollution caused by the enterprises processing and utilizing scrap metals mainly include the sewage coming from the water-separated copper wire crusher, the dust from loading and unloading as well as processing and utilizing of raw materials, waste gas from pyrogenic decomposition and gas cutting and the unrecyclable and dangerous wastes contained therein.
HU, Y.ZHENG , Study on the management of designated companies processing and using the imported scrap metals, Chinese Journal of Environmental Management, 5(2013) 18-21
Online since: April 2014
Authors: Jin Fu Liu, Zhi Hua Li, Jun Sheng Gu, Guo Rui Ren, Qian Guo, Jie Wan
Experimental Study on Large Turbine Hp-Valve’s Excitation Fault Caused by Steam’s Unsteady Flow and Its Economic Solution Jie Wan1,a, Junsheng Gu2,b , Guorui Ren1,c, Qian Guo2,d, Zhihua Li2,e, Jinfu Liu1,f 1 School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, China 2 Hebei Guohua Dingzhou Power Generation Co., Ltd, Dingzhou, Hebei, 073000, China awhhitwanjie@126.com, b15832273570@126.com, c254771313@qq.com, d15832273261@126.com, eguoqian2@126.com, fjinfuliu@hit.edu.cn Keywords: Large Steam Turbine, Hp-Valve, Excitation Fault, Diagonal Admission, Unsteady Flow, Economy Solution, Experimental Study.
So it does not cause resonance or forced vibration; if the the corresponding system damping of the valve structure, material and the operating system can not suppress air exciting vibration force, the valve rod-disc system may have forced vibration.
References [1] Houlei Gao, Jia Tian, Qiang Du, et al: Journal of Shandong University: Engineering Science Vol. 39 (2009), p. 106-111 (in Chinese) [2] Diansheng Zhang, Tao Chen, Yongxing Li, et al: Electric Power Technology Vol. 19 (2010), p. 15-19 (in Chinese) [3] Zhihua Gao, Zhen Ren, Wenying Huang: Proceedings of the CSEE Vol. 25 (2005), p. 88-92 (in Chinese) [4] Jizhen Liu: Proceedings of the CSEE Vol. 33 (2013), p. 1-8 (in Chinese) [5] Lin Gao, Yiping Dai, Zhiqiang Wang, et al: Proceedings of the CSEE Vol. 28 (2008), p. 84-89 (in Chinese) [6] Daren Yu, Zhansheng Liu, Qiang Li, et al: Journal of Power Engineering Vol. 27 (2007), p. 1-5 (in Chinese) [7] Xiukun Zhang, Mingdong Jiang, Shengbo Su, et al: Energy Conservation Technology Vol. 23 (2005), p. 87-90 (in Chinese) [8] Fei Jiang, Jianguo Sun: Energy Conservation Technology Vol. 29 (2011), p. 437-441 (in Chinese) [9] XueXia Lv, Zhaozhong Li, et al: Energy Conservation Technology Vol. 30 (2012), p. 258-261 (in Chinese)
[10] Chongming Song, Jiao Liu, et al: Energy Conservation Technology Vol. 30 (2012), p. 527-531 (in Chinese) [11] Yufeng Guo, Zhiqiang Xu, Daren Yu: Turbine control principle (China Machine Press, Beijing 2010) (in Chinese) [12] Haiping Guan, Xiaoliang Jiao, et al: Energy Conservation Technology Vol. 29 (2011), p. 57-60 (in Chinese) [13] Zhiqiang Xu, Yingdong Song, et al: Turbinete Chnology Vol. 50 (2008), p. 374-377 (in Chinese) [14] Daren Yu, Yanfeng Duan, Jinfu Liu, Zhansheng Liu, Qinghua Hu: ASME Journal of Engineering for Gas Turbines and Power Vol. 132 (2010), p. 1-4 [15] Shan Tu, Bi Sun, Jingru Mao: Power Engineering Vol. 24 (2004), p. 729-731 (in Chinese) [16] Jian Hu, Bao Zhang: Zhejiang Electric Power Vol. 3 (2009), p. 45-47 (in Chinese) [17] Haiying Li: Petro-chemical Equipment Technology Vol. 30 (2009), p. 43-46 (in Chinese) [18] Shan Tu, Jingru Mao, Bi Sun: Fluid Machinery Vol. 28 (2000), p. 30-32 (in Chinese) [19] Shusan Wu, Jue Wang: Fluid induced vibration (China
Machine Press, Beijing 1983) (in Chinese) [20] Jingru Mao, Shan Tu, et al: Journal of Engineering Thermophysics Vol. 11 (2002), p. 687-690 (in Chinese)
Online since: June 2022
Authors: Yofentina Iriani, Dianisa Khoirum Sandi, Kusumandari Kusumandari, Uli Ulfa
It has low curie temperature and dielectric loss among other dielectric materials [11-13].
Meanwhile, in the solid-state method, a material was fabricated by mixing two or more different solid materials.
Materials and Methods Materials.
Materials used for the co-precipitation method were barium hydroxide [Ba(OH)2] (Sigma Aldrich, 95%, St.
This behavior commonly occurs for many dielectric materials.
Online since: February 2022
Authors: Alexander E. Burdonov, Konstantin S. Bushuev, Andrey A. Tyutrin
Representative samples were obtained by preliminary thorough mixing of the material and averaging by quartering. 5 simultaneous measurements were carried out for the studied material sample.
The sources of dust in electrostatic precipitators are suspended substances carried out with anode gases – particles of raw materials loaded into the electrolytic pots, solid products of anode destruction, as well as the products of electrolyte evaporation and droplets condensed during cooling of the dusty gas, and captured in convective gas flows.
Somov, Determination of optimal fluorine leaching parameters from the coal part of the waste lining of dismantled electrolytic cells for aluminum production, Journal of Mining Institute. 239 (2019) 544-549
Series: Materials Science and Engineering. 411 (2018) 012052
Deineko, Utilization of lignins: achievements, problems and prospects, Chemistry of Plant Raw Materials. 1 (2012) 5-20.
Online since: September 2013
Authors: Nulifer Dogru, Latif Ozler, Nihat Parlak
Introduction Materials with high wear resistance are frequently utilized in industry.
Cold work tool steel is one of these wear resistant materials.
In the researches, it was determined that it is suitable to use CBN tools in machining of that kind of materials which have 60-65 HRc hardness [1, 2, 3, 4].
This situation is in line with the literature studies that are about the materials which have high wear resistance [15].
Camuscu: Gazi University Journal of Science Vol.18 (2005), p. 453 [2] J.D.
Online since: November 2005
Authors: Sung In Hong, Shin Hur, Dong Kil Shin
., Korea Institute of Machinery and Materials, Daejeon, Korea 2 Dept. of Mechanical Engineering, Chungnam National University, Daejeon, Korea 3 IPT Team, Semiconductor Business, Samsung Electronics Co., Yongin, Gyeonggi-Do, Korea Keywords: Thin films, Polyimide, Mechanical properties, Nanoindentation, Microtensile test Abstract.
The measured values from graphite nanoplatelet/epoxy composite materials using dynamical mechanical analysis, nanoindentation, and tensile tests were compared with the predicted storage and loss moduli from the related model [4].
It was shown that the Young's modulus obtained in nanoindentation for metal materials was about 15% higher than the values obtained in tensile testing, which can be attributed to the different size and micro structural levels that are probed [5].
Oh: Key Engineering Materials Vol. 270-273 (2004), pp. 1107-1112 [2] S.
Johann: Nanomechanics Research Unit Materials Technology, EMPA [6] ASTM Standard, ASTM designation: D638−03 (2002), pp. 1-15 [7] ASTM Standard, ASTM designation: D882-02 (2002), pp. 1-10 [8] ISO 527-3 International Standard, First edition (1995), pp. 1-5 [9] WC, and Pharr and GM: Journal of Materials Research Vol. 7 (1992), pp. 1564-1583 [10] Xiaodong Li and Bharat Bhushan: Materials Characterization 48 (2002), pp. 11-36
Online since: March 2011
Authors: Qiang Fu, Yi Hua Qian, Zhi Li, Pin Guo Zou, Xue Jun Xie
The electric polarity of oil flow and the insulating layer were mainly depended on the state of charged cations and anions in oil, while the surface characteristics of solid materials only played a supporting adsorption role.
The chemical compositions of solid insulating materials were cellulose and lignin.
Thus, for the same solid materials, the electric polarity of charges in oil flow differed according to the polarity of charged ions in oil.
The charged current varied with the solid materials.
Wang, Analysis of Oil Flow Electrification in Forced Cooling Transformer, Journal of Jiangxi Vocational and Technical College of Electricity.2007,vol.20(1),pp.35-36
Online since: February 2022
Authors: Michail G. Potapov, N.A. Kuts, B.B. Zaritskiy
This is a class of wear-resistant materials that is widely used for the manufacture of parts with high wear resistance and acceptable strength.
Davis (Eds.), Metallurgy and properties of high alloy white irons, ASM Specialty Handbook Cast Irons, Materials Park, OH: ASM International, 1996
Prokazov, Influence of alloying and heat treatment on the structure and hydroabrasive resistance of chromium-manganese cast iron, Cast Wear-Resistant Materials. (1978) 115-125
Rodin, Materials Science: Textbook Manual for Mechanical Engineering Specialties of Universities, Higher School, Moscow, 1971
Mikhailov, Study of the influence of the ratio of carbon and manganese on the structure and properties in Fe - C - Mn alloys; based on materials from the V International Scientific and Practical Conference "Engineering Sciences – from Theory to Practice", Globus, St.
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