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Preliminary Investigations on Preparation of Cu-Al Bi-metallic Tubes Using Swaging-Diffusion Method Qingle Hao1,a, Jingtao Han1,b , Jingjie Song1,c, Shuai Ji1,d 1 School of Materials Science and Technology, University of Science and Technology Beijing, Beijing 100083, China a qlhao0205@126.com, b hanjt@ustb.edu.cn, c songjingjie1223@163.com, d carven0910@sina.com Keywords: Bi-metallic tube, Swaging-diffusion method, Cu-Al, Formability, Failure.
These micro cracks may be caused by materials slipping at the initial stage of deformation.
Owing to inhomogeneous plasticity between oxide layer and matrix, materials in this area tend to separate.
And cupreous materials flowing towards head end are much more than aluminous materials.
Hossein-Zadeh: Materials and Design Vol. 38 (2012), p. 147-153 [6] V.

Adsorption of Cd(II) and Pb(II) from wastewater onto porous lignin beads Xianfa Li1, 2, a, Xuegang Luo1, b 1 School of Life Science and Engineering, Southwest University of Science and Technology; 2 Engineering Research Center of Biomass Materials（SWUST)，Ministry of Education alixianfa@swust.edu.cn, blxg@swust.edu.cn Keywords: Porous lignin beads (PLB), Adsorption, Desorption, Cd(II), Pb(II) Abstract.
The corresponding adsorption-desorption isotherm had a very obvious hysteresis loop which can be classified as type IV typical of mesoporous materials.
Acknowledgements Authors wish to thank Engineering Research Center of Biomass Materials（SWUST)，Ministry of Education, for the support of this research (No. 09zxbk14).
Huang: Journal of Applied Polymer Science Vol.101 (2006), p.2284–2291 [10] X.F.
LUO: Journal of Functional Materials (China) Vol. 42 (2011), p. 256–263

It is one of the important members of Nano-materials.
Nano SiO2 is a hot spot in the field of materials science and condensed matter physics, and is widely used in building materials, rubber, engineering plastics, coating, adhesive, encapsulating material and cosmetics industry [1-2].
Ratio of other raw materials for cement (kg) : fly ash (kg) : lime (kg) = 100:28.6:14.3.
[J], New building materials, 2003,2: 22-23
[6] ZhangJinSheng, Yan-Sheng Yin, Nanometer material and technology and the development of new building materials [J], China building materials and equipment, 2002,2:41-44.

Simulation Study for the Effects of Rotational Speed on Performance of Full Metal Single Screw Pump Jun fei Wu1,a,Jun bin Lan2,b,Fan guo Meng2,c, Xu ping Zhang2,d,Ying Yu2,e 1Sino-German Technology Faculty, Qingdao University of Science and Technology, Qingdao 266061, P.R.China 2College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, P.R.China ajfw_2002@sina.com.cn, btiangangliang_208@yeah.net, c813991893@qq.com, dzxp8008@163.com,eyuyingwyd@163.com Key words: full metal screw pump; finite volume method; rotational speed; lift Abstract: Rotational speed is one of the important parameters that impact lifting capacity of full-metal single screw pump .Firstly using the finite volume method to establish a full-metal single screw pump 3D model, secondly using FLUENT software to calculate outlet pressure changes with different series of rotational speed value of the pump in condition of the same inlet pressure .Lastly drawing outlet pressure
Full-metal single screw pump can avoid these shortcomings for its stator and rotor are made of metal materials and they take way of clearance fit.
Acknowledgements This work was supported by Shandong provincial natural science Foundation (ZR2012EEL03, China) and Qingdao application basic research project（12-1-4-3-(15)-jch,China）.
Chinese Journal of mechanical engineering. 2004,15 ( 16): 1462-1465.

Gear is a component made of metal materials, and it is possible for a bonding to emerge between metal materials if high temperature is caused by such two components in their meshing.
Material selection The quality of materials plays a great influence on the mechanical properties of gear, and the standards for the gears made of different materials are also different.
First, the nonmetallic materials are commonly used in the mechanical drive of small strength, and bakelite and plastic materials can be chosen for these gears.
Second, metal materials are very applicable to the spare parts of machinery equipment, and iron, steel, and aluminum are very practical materials.
Journal of Shiyan Technical Institute, 2004 (02).

The main factor which leads to this phenomenon is that the increasing mixing ratio leads to the increasing hydrate, better cement raw materials of lightweight soil and fill a greater number of pores.
:Hehai University Journal (natural science edition), 1997(5):106-105
[6] He Guojie, Ding Zhenzhou, Zheng Yingren:Journal of Underground Space and Engineering, 2009.2 (5):18-22
:Journal of Geotechnical Engineering, 2006.28(4):533-536
:Journal of Geotechnical Engineering, 2009.31(1):21-25.

A prepared mixture need to be emphasized because when the time increased, unstable mixture as low carbon concentration compound will cause decarburizing toward the materials [9].
International Journal of Materials Science and Applications, 4 (2-1), pp.11-14
Journal of Materials Engineering and Performance, pp. 383-391
Material Research, 12(4), pp.483-87
Innovative Space of Scientific Research Journals, 6(4), pp.pp. 987-994.

Sterilize and mechanically convert the waste into recyclable raw materials; 3.
The materials were classified because each material has its own physical and chemical properties, and each material is a specific type of plastic, as each type of plastic has its own melting point.
Borrelle et al., “Predicted growth in plastic waste exceeds efforts to mitigate plastic pollution,” Science, vol. 369, no. 6510, pp. 1515–1518, Sept. 2020, doi: 10.1126/science.aba3656
Ok, “COVID-19’s unsustainable waste management,” Science, vol. 368, no. 6498, pp. 1438–1438, June 2020, doi: 10.1126/science.abc7778
Song, “Development of new metal/polymer materials for rapid tooling using Fused deposition modelling,” Materials & Design, vol. 25, no. 7, pp. 587–594, Oct. 2004, doi: 10.1016/j.matdes.2004.02.009

Some of the advanced materials have to be replaced and unnecessary material can be deleted; Finally, we should avoid partly dismantled to reduce materials waste by taking the cooperation between constructors into account. 3.2 The allocation of cost savings Project owner (developer) is the organizer and investor of the project.
Here we discuss it according to different materials supplier.
Chinese Engineering Science, 1999,11 (1)
China's building materials industry press, 2006 (1)
Journal of fujian construction, 2012 (9) 27 ~ 29.

Carter: Material Science Forum Vol. 389-393 (2002), p. 23
Janzen: Material Science Forum Vol. 433-436 (2003), p. 21
Madar: Material Science Forum Vol. 433-436 (2003), p. 25
Park: Material Science Forum Vol. 389-393 (2002), p. 581
Janzen: Materials Science Forum Vol. 264-268 (1998), p. 103.