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Tapered Work Roll Shape Design and Optimization for Cold Tandem Rolling Mill ZHOU Xiaomin1, a , MAO Yangjun 1,b, WU Yunfeng 1,c 1 School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China azhouxiaomin@ustb.edu.cn, bmaoyangjun88@sina.com, c wuyunfeng1202@163.com Keywords: Edge drop; Roll shape; optimization Abstract: K-WRS technology has a better edge drop control effect in cold tandem rolling mill, but it still exists some problems such as contact pressure peak beyond the limit, transition peak and the uneven distribution of contact pressure between the rolls in practical application.
Journal of materials processing technology,2008(4): 508–512
Materials and Design, 2009 (6) :1930–1938
Journal of Materials Processing Technology, 2000 (1-3):110-114

In our daily life, we will set distribution centers for those materials that are large quantities of and long distance.
Basing on distribution centers, we can develop the contact between different areas, form transportation network, arrange materials’ transportation reasonably, optimize the transportation routes and reduce the logistics cost.
But in our daily life, we will set distribution centers for those materials that are large quantities of and long distance between the supply areas and the demand areas except the direct transportation.
References [1] F.L.Hitchcock: Journal of Mathematical Physics Vol. 20(1941), p. 224–230
[4] A.Charnes, and W.W.Cooper: Management Science Vol. 1(1954), p. 49–69

Therefore, with using elastic deformation method is suitable for machining of materials which have excellent physical properties due to a perfect crystal structure[6].
Table 1 Material properties of acrylic.
Acrylic plate raw material b.
Acknowledgements This research is supported by the National Science Foundation of China (50705028, 50975085).
Syoji: Journal of Japan Society Precision Engineering Vol. 68-8 (2002), pp: 1067−1071

Aisien 3, b 1,2 Department of Chemical Engineering, University of Benin, Benin City, Nigeria. 3 Integrated Science Department, Collage of Education, Ekiadolor - Benin, Nigeria.
It is useful for the survival of Nigerian economy, as sources of basic raw materials for most industrial processes.
Materials and methods Sample collection 20 litres plastic container was used to collect the palm oil mill effluent from Nigeria Institute of oil palm research (NIFOR) NIFOR - Benin, Nigeria.
The high BOD and COD is an indication of the presence of large amount of organic and inorganic materials in the untreated POME.
"Treatment of Palm Oil Mill Effluent by up- flow Anaerobic Filtration" Journal of Chemical Technology and Biotechnology 61: 103-109. (1994)

Experimental procedures Raw materials PC is 42.5R grade produced by Shenzhen Haixing cement plant.
With time increasing, the amount of cementicious materials gradually used up by reacting with water, so the increase of strength rate changed slowly.
Acknowledgements The financial support from the National Science Fund for Distinguished Young Scholars (50925829) and Shenzhen Durability Center for Civil Engineering of Shenzhen University (SZDCCE 10-15) are greatly acknowledged.
Zhu: Journal of Southeast University, Vol.38 (2008), p. 146-150, in Chinese
He: Journal of the Chinese ceramic society, Vol.31 (2003),p. 774-779, in Chinese

Meanwhile, the thickness changes and the materials flow conditions of the DP plank during the hot stamping process were also analyzed.
Fig.4 The thickness changes distribution Fig.5 The thinning changes distribution Fig.6 The positions of the experimental points Fig.7 The flow condition of plank materials 4)The figure 6 shows the choice of experimental points during simulation of hot stamping process of DP steel blank.
Figure 7 shows that the flow condition of the plank materials occurs mainly in the region of the blank holder (i.e. the flange region) in the deep drawing process.
It can be seen from the figure 7 that the flow of materials is very slow, and the small deformation defects will be removed in the latter trimming process.
Investigation of the thermal-mechanical properties of hot stamping steel, Journal of Materials processing Technology, 2006.177: 452-455

At last, the mechanism of SiC particles acted on coating materials was analyzed.
Here the NiCrAl is acted as the bond layer to joint the metal materials and the ceramic materials.
The hardness of SiC materials is less than that of the WC materials, so it is not surprised that the hardness of NC coating is less than that of LR coating.
Tjong and Haydn Chen: Materials Science and Engineering R, Vol.45 (2004), pp.1
Guo: Nanostructured Materials Vol.10 (1998) No.6, pp.943 [3] J.T.M.D.

Filling material is pumped into the filling formwork at the back of working face
Kan: Safety Science, Vol. 50(2012) No.4, p.593
Xue: Journal of China Coal Society, Vol. 36(2011) No.3, p.357.
Fu: Coal Science and Technology, Vol. 41(2013) No.1, p.40.
Hou: Journal of China Coal Society, Vol. 24(1999) No.3, p.256.

Journal of Geotechnical and Geoenvironmental Engineering,2005,131(1):20-27
Vertical loads on concrete box culverts under high embankments[J].Journal of Bridge Engineering,2005,10(6):643-649
Huazhong University of Science & Technology：Natural Science Edition, 2009, 37 (4): 115-118
Model test with similar material and numerical simulation of culvert with high f ills[J].Journal of Jilin University : Engineering and Technology Edition, 2008, 38(2):399-403
Journal of Jilin University :Earth Science Edition, 2009, 39(1): 119-125

Materials and methods Six apple cultivars (Early Golden Delicious, Jonagold, Hanfu, Ralls, Rainier and Fuji) used in this work were selected from National Germplasm Nursery (Xingcheng city Liaoning province, China) at the same maturation stage (Table 1), coming from a single batch.
Journal of Food Engineering 62 (2004) 121–129
Ramos, 2010.Journal of Function Foods. 2, 35-45
Journal of Functional Foods 3, 179-189
Journal of Food Composition and Analysis 24, 250-256