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It is necessary to conduct experiment on machine process to get the optimum parameters and conduct study on materials preparation to optimum structural.
Acknowledgments The authors are grateful for the financial support provided by Material Science and Engineering College Northeast Forestry University.
Journal of Northwest Forestry Institute Vol. 04,1998,p. 62
China Forestry Science And Technology Vol. 02,2011, pp. 40-44
“The control of the timber crumble in machine work”.Journal of Qiqihar University(Natural Science Edition) Vol. 02,2004, pp.80-82

Fabrication and Characterization of Nanocrystalline NiO Prepared by Sol-Gel Process Yu Cai1,a, Zhaoyang Wu2,b, Shengli Zhao2,c and Jine Zhu2,d 1Institute of Information management, Henan University of Science & Technology, Luoyang, Henan, 471003, China; 2School of Materials Science and Engineering, Henan University of Science & Technology, Luoyang, Henan, 471003, China ahappycaiyu@163.com, bwuzhaoyang870203@126.com, cslzhao@mail.haust.edu.cn, djine0736@163.com Keywords: Nickel Oxide; Nano-Crystalline; Sol-Gel.
Among lithium ion battery anode materials, the traditional carbon graphite anode materials are widely used but it can’t staisfy the requirement of high capacity, so more and more researchers pay their attentions on searching for materials owning high capacity and stable performance.
Liu: Materials Science Vol. 270 (1995), p. 590
Yu and S M Li: Journal of Materials Engineering, zl(2006): 110
Shen: Journal of Inorganic Materials.Vol. 19(2004), p. 289

Besides, the long-term durability of CFRP is an important factor in successful application as repair materials for concrete.
NSC 99-2221- E -035-084 by the National Science Council, Taiwan, R.O.C.
Bradford: Construction and Building Materials, Vol.9, No.2 (1995), p.115
Farschman: Construction and Building Materials, Vol. 9, No. 3 (1995), p.141 [11] H.A.
Gupta: ACI Materials Journal, November-December (2000), p.703

This paper focuses on process capability evaluation method for position tolerance under maximum material condition.
The maximum material condition (MMC) is a kind of tolerance principle, when the measured features and datum deviate from the maximum material dimensions, geometric tolerance can get extra bonus.
Acknowledgements This work was supported by the major project of the transformation of scientific and technological achievements in JiLin Science and Technology Department.
[2] Geometrical tolerancing-Maximum material requirement, least material requirement and reciprocity requirement ISO 2692, (2002)
Zhao, in: New process capability index, edited by Journal of systems management, Vol.17(2008), p. 116–120.

The experimental results show that the new cropping process can crop bars with different materials and diameters.
However, these cropping machines have many defects like low productivity, high energy-consumption, materials waste and noise pollution.
The cropping machine can manufacture bars with different materials and diameters.
The new manufacturing precision cropping process is green, which can crop bars with different materials and diameters and get high-quality cross-section.
[2] Chen Jin-De, Yu De-Hong, “Plastic Precision Cropping of Metal Materials,” International Journal of Machine Tools and Manufacture, 32 (3), pp. 425, 1992

It is an effective way to surface strengthening of metallic materials.
Besides, he built up The deformation and diffusion model of the nanocrystalline material was built up by the auther.The friction damage and the sliding contact fatigue damage under sliding contact load were analyzed by using the nanocrystalline material with the average grain size smaller than 100nm, micro nanocrystalline materials with 100nm~1000nm and micron materials[18].
The results show that the nanocrystalline materials not only can perfectly resist the friction damage and sliding contact fatigue damage, but also reduced the friction coefficient obviously comparing with the micro nanocrystalline materials and the micron materials.
The nanocrystalline microstructure obtained can enhance the strength of the materials in certain degree.
Ovid’ko: International Materials Reviews, Vol.50(2005), p.65 [18]T.

So it can be concluded that the parent materials of the sediment control Cr and PC3 presents the lithogenic sources.
Cluster III (Cr) reveals that Cr is not greatly related to other elements and mainly derives from the soil parent materials.
According to PCA, CA, and HCA results, two main sources can be distinguished: (1) Cu, Pb, Zn and As mainly originate from human activities; (2) Cr is separated from the other elements and mainly derives from the soil parent materials.
Vol. 65 (2006), p. 863 [16] Müller G: Geo journal.
Vol. 29(2010), p. 327, in Chinese [18] Mendiola L.L., Dominguez M.C.D and Sandoval M.R.G.: Research Journal of Environmental sciences.

Experimental details Materials.
Materials Science and Engineering B (2006) 131: 18-21
Journalof Materials Science (2014) 49: 7529-7538
Materials and Design (2009) 30: 1386-1390
Journal of Magnetism and Magnetic Materials (2002) 242-245: 1329-1334

The hardness values of these abrasive materials are shown in Table 2.
Effects of Mixed Abrasives In the lapping process, the machining effect is often dissatisfactory when one kind of abrasive is used to machine some difficult-to-machine materials.
Acknowledgement This work was supported by the National Natural Science Foundation of China (Nos.
Vancoille, et al: International Journal of Machine Tool & Manufacture.
Ma, et al: Journal of Functional Materials.

Study on mechanical properties of wood plastic composites Huang fang Eastern Liaoning University, Chemical Engineering and Materials Science, Liaoning Dandong 118000 3x.931@163.com Key words: composite material; mechanical properties; research Abstract.Composite material has many excellent properties, current, receives special attention was paid to its mechanical properties.
Composite materials are often called fiber ( or other dispersed phase) reinforced composite materials.
Experiments show that, the ratio of raw materials on the properties of the composite materials affected greatly.
This shows that rely on increase the dosage of solvent to improve the mechanical properties of materials is limited.
Journal of Reinforced Plastics and Composites, Vol 11, April 1992 [9]Vares T, Reiska R.