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The mathematical model of dieless drawing control speed There are two dieless drawing models of variable section pipes as shown in fig.1.One end of a pipe is fixed, the induction heating coil was used for heating local materials to reach high temperature, then drawing another end of the pipe at a certain speed V1 while moving the induction heating coil and the cooling nozzle synchronously at certain speed V2 toward the opposite (or same) V1 direction, spraying coolant to cool quickly for the deformed part.
Experimental Study Experiment study of variable section pipe was carried out in the dieless drawing test machine, the test material was carbon steel pipe,Φ 14mm × 2.5mm.
Mujrahashi: J．Wire Journal International, VOL 12 (1991), p53 [4] X.
Di: J．Journal of Northeastern University（Natural Science）, VOL30(6) (2009), p833 [5] W.
Guifu: J．Journal of Materials Processing Technology, VOL 120 (2002), p90

More recently, intensive research has been focused on CNTs composite materials with enhanced mechanical, electrical, and thermal properties[11-12].
Experimental Materials and instrument.
Liu: European Polymer Journal Vol. 41 (2005), p. 2693-2703 [7] G.
Yu: Materials Letters Vol. 59 (2005), p. 2085-2089 [8] W.
Tseng: Journal of Applied Polymer Science Vol. 105 (2007), p. 1642-1650

Materials and Methodology Materials.
Khayat: ACI Materials Journal Vol. 96 (1999), p. 346
Tantiwitayawanich, in: Proceedings of the 4th Thailand Materials Science and Engineering, Pathumthani, Thailand (2006), p. 1
Khayat: ACI Materials Journal Vol. 97 (2000), p. 526
Shah: ACI Materials Journal Vol. 93 (1996), p. 409

The Preparation of Red Mud Lightweight Ceramsite Long Ma, GuoZhong Lia* Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, School of Materials Science and Engineering, University of Jinan, Jinan 250022, China amse_ligz@ujn.edu.cn, *correspondence author Key words: red mud, fly ash, lightweight ceramsite, pore-forming agent Abstract.
Lightweight ceramsite as a lightweight aggregate, has good thermal insulation properties, low bulk density, sound insulation, resistance of corrosion and high temperature, and can be used to produce new wall materials.
The formation process of lightweight ceramsite structure is that a series of chemical reactions of the raw materials (including the red mud, fly ash, etc.) occurd, which make green body to have a certain viscosity.
In this process, the gasses were released in raw materials, and expanded in the liquid phase to form a porous lightweight ceramsite structure[2].
Test proportion of materials was shown in Table 4.

In this paper, method of designing an Ultrasonic Tomography System due to the propagation manner of ultrasonic wave inside the various materials is investigated.
All material substances are made of atoms, which may be forced into vibration motion in their fixed positions.
The particles of material have elastic oscillations when it is not stressed in tension or compression beyond its elastic limit and internal (electrostatic) restoration forces arises when the particles of a medium are displaced from their equilibrium positions.
San,” Determination of Water and Oil Flow Composition Using Ultrasonic Tomography” Elektrika Journal, (2007), VOL. 9, NO. 1, pp. 19‐23
Waterfall, “Process Tomography- Implementation for Industrial Processes”, Measurement Science & Technology Journal, (1995)

Aksionova, Estimation of Occupation Safety Risks at Energetic Sector of Iron and Steel Works, International Journal of Engineering & Technology (UAE),  7(2.23) (2018) 216-220
Jonsson, Improved Thickness and Shape Accuracy with Advanced Pass Scheduling in Plate Rolling, Journal of Materials Processing Technology, Elsevier. 34 (1992) 255-263
[8] QI Xiang-dong, WANG Tao, XIAO Hong, Optimization of Pass Schedule in Hot Strip Rolling, Journal of Iron and Steel Research, International. 19(8) (2012) 25-28
Lenard (Ed.), Metal Forming Science and Practice 9, Elsevier Science Ltd., Chapter 11, 2002, pp. 213-226
Nguyen, The modelling of the mechanics of deformation in fiat rolling, Journal of Materials Processing Technology, 60 (1996) 87-94

Materials and Methods This paper describes a comprehensive review of common spatial criteria for landfill site selection.
Pradhan, GIS modeling for site selection of a transfer station site for residential solid waste separation and recycling, Pertanika Journal Science & Technology, 21 (2) (2013) 487-498. [4] Choong, (2001) [Online], Accessed on 24th February 2012.
Chester, Michigan Solid Waste Policy, Michigan Department of Environmental Quality Waste and Hazardous Materials Division. (2007) [9] M.R.
International Symposium on Geoinformatics for Spatial Infrastructure Development in Earth and Allied Sciences.
Ramos, Evaluation of a Municipal Landfill Site in Southern Spain with GIS-aided Technology, Journal of Hazardous Material, 160 (2008) 473-481.

ABS resin is a flammable polymer materials, the limiting oxygen index is 18% [4-7].
Experimental Materials.
TPP was purchased from Star Beida (Beijing) Chemical Materials Co., Ltd..
TGA was used to analyze the thermal stability of the flame retardant materials with 20wt% TPP addition.
Fig.2 is the DTG curve of the materials.

It is heterogeneous, but continuous, thus it is quite natural and sensible to analysis cement-soil destruction in the view of composite materials in the micro-level.
Secondly this is followed by composite materials in the phase through the interface into the overall cement in the soil.
As cement hardening cement paste of the main components of the CSH in the soil-cement materials, solid- liquid interface is important to the cement-soil strength and creep.
Bulletin of Science and Technology, Vol.19(2003), p.136~139
Journal of Fuzhou University (Natural Sciences Edtion), Vol.32 (2005), p. 223~226

With environmental awareness for constituents in building materials generally growing, the development and applications of bio-admixtures is expected to enhance [3].
Journal of Applied Polymer Science, 2007, 105: 486–491
Journal of Advanced Concrete Technology, 7(1): 5-12
Journal of Building Materials, 2008,(1): 52-57 [10] WANG Li-jiu, HUANG Feng-yuan, MA Xi-chen, ZHANG Hong.
Journal of thermal analysis. 1998, 32: 871-879.