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Screw press has been used in oil extraction with a long history, both for cold and hot pressing of vegetable oil materials.
In the squeezing chamber, the pressing screw roller is a key working part, it will push and extrude the oil materials while working, leading to the volume change in the chamber and the increase of extrusion force, thus squeezing oil from materials [7].
The pressing screw roller is an assembly part, of which the pressing screw is the most essential element, working under the condition of the friction force from oil materials and various kinds of resistance forces, with its surface wear and screw tooth fracture as the main failure forms [6,7].
It can be solved effectively by optimizing structure design, choosing different materials, improving processing methods or using different heat treatment methods, thus making the whole system more secure and reliable. 2.
China oils and fats, Vol. 21 (1996), p. 49 [8] Shilong Li: Journal of cereals & oils, Vol. 23 (2010), p. 7

Semisolid materials with a non-dendritic microstructure have a complex rheological behavior such as pseudo-plasticity and thixotropy.
Table 1 shows selected materials properties.
Properties of the materials.
Journal of Materials Engineering and Performance 19-17 (2022) [7] A.
University of Science and Technology Beijing. (2011)

Fundamentals of modern manufacturing: materials, processes, and systems.
International Journal of Production Research 52.20 (2014): 5945-5964
KES Journal 10.6 (2006): 477-492
Fundamentals of modern manufacturing: materials, processes, and systems.
International Journal of Production Research 38.6 (2000): 1325-1338

Y1101351), Science and technology project of Construction Department of Zhejiang Province(No.08Z028), and Science and technology project of Department of Education of Zhejiang Province(No.Y200906368).
Halaka: British Corrosion Journal.
Vitaliani: ACI Material Journal, Vol. 90 (1993) No.5, p.441
Li: Journal of Structural Engineering Vol. 129 (2003) No.6, p.753
Turriziani: Journal of the American Ceramic Society, Vol. 55 (1972) No.10, p.534

Fat coal which particle size is 50~13mm was used to be the selected material, drifting results are shown in Table 1.
Acknowledgements This work was financially supported by the Chinese National Science Foundation (51174214), Key Project of Chinese National Programs for Fundamental Research and Development (2012CB214904) , The National Science and Technology Support Program (2012BAA04B02), and The Specialized Research Fund for the Doctoral Program of Higher Education of China (20120023110017).
[5] LUO Z, ZUO W, TANG L, et al:Mining Science and Technology, 2010, 20(5): 743-746
[8] YANG Guo-hua, CHEN Qing-ru, LIANG Chun-cheng:Journal of China University of Mining and Technology, 1996, 25(4): 109-113. ( In Chinese ) [9] Daizo kunii, Octave Levenspiel.
[10] WANG Ting-jie, WANG Zhan-wen, JIN Yong, YU Zhi-qing:Journal of Chemieal Industry and Engineering(China), 1996, 47(6): 718-725.

Acknowledgements This work was financially supported by National Nature Science Foundation of China (51275185).
Journal of Sound and Vibration, 2007. 301(1-2): p. 400-409
Journal of Wind Engineering and Industrial Aerodynamics, 2010. 98(10-11): p. 592-599
Journal of Fluids and Structures, 2000. 14(4): p. 489-509
Journal of Sound and Vibration, 1973. 30(2): p. 207-20

Chinese soft science ,Vol.6, 138-149
Journal of north China institute of technology ,Vol.26, 309-312
“Based on the DEA of farmhouse wall block material optimization analysis .”
Journal of shenyang architectural university ,Vol.28, 123-128
Journal of shenyang architectural university ,Vol.25, 1161-1167

Effects of Melting Process on the Microstructure and Thermal Conductivity of Cu-10Ni-5Mo Alloy Baiping Lu a, Hui Xub and Cancheng Liuc Aeronautical Science and Technology Key Lab. of Aeronautical Materials Processing, Nanchang Hangkong University, Nanchang 330063, P.
Experimental Procedure Experimental materials are copper powder (99.95 wt% Cu, average diameter 74 µm), nickel powder (99.97 wt% Ni, average diameter 74 µm) and molybdenum powder (99.95 wt% Mo, average diameter 74 µm).
Acknowledgements This work was financially supported by Open Fund of Aeronautical Science and Technology Key Lab. of Aeronautical Materials Processing in Nanchang Hangkong University (zk200901002), the fund of Aviation Science (2010ZE56015) and the Project of Education Department of Jiangxi (GJJ08199).
References [1] Wenhai Zhang: The Chinese Journal of Nonferrous Metals, Vol. 14 S1（2004）, P.63~71 [2] Basheng Liu : Nonferrous Metals, Vol.6 (2002 ), P.11~18 [3] E. van Stein Callenfels, R. van Laar: Iron and Steel, Vol. 42 , No . 3 ( 2007), P.79~82 [4] Jiaqi Song, Jing Hu: Ironmaking, Vol. 42 , No . 3(2006), P.56~60 [5] Feng Zhao, Wusheng Guo: High Voltage Apparatus ,Vol.6 (1999), P.19~23 [6]Hengzhi Fu, Jingjie Guo, Lin liu, et al: Directional Solidification and Processing of Advanced Materials (Science Press, China, 2008).

As high temperature insulation materials, the mentioned fibers should have a use temperatuer higher than 900˚C, low thermal shinkage under serving temperature, and easy to be prepared with melt-quenching method.
It has been known that the addition of rare earth ions in glass materials could fill in the glass network space and bolck the migration of anion clusters with large ion radius and cationic field strength, causing variations in properties, such as density, elastic modulus, thermal expansion, viscosity, and so on [3,4].
Experimental The major starting materials are wollastonite, dolomite, silica and Nd2O3 (analytical reagent).
After thoroughly mixed, the weighed batch materials were melted in a graphite crucible at 1600-1700˚C for 30-60min.
Wang, et al.: Journal of Wuhan University of Science and Technology.

The non-crystalline structure and lack of longe range order is common for all these metallic materials.
Experimental materials and methods For the experiments the amorphous alloy ribbons with the nominal composition of Zr65Cu17.5Ni10Al7.5, Cu47Ti35Zr11Ni5Si1 and Fe40Ni40B20 (at. %) prepared by melt spinning method were used.
Acknowledgment This work was supported by the Slovak Academy of Sciences- grant VEGA 2/0045/14 and by the projects Nos. 26220120021 and 26220120033 provided by the European Regional Development Fund.
Greer, Temperature rise at shear bands in metallic glasses, Nature Materials 5 (2006) 15-18.
Duhaj, Failure crack orientation at ductile shear fracture of Fe80-xNixB20, Journal of Materials Science 25 (1990) 1598.