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Explore for new, high strength to weight ratio materials with better strength and toughness has guided to the improvement of a new age group of materials, while their properties may generate key challenges in machining operations.
Material that can be Machined All conducting metals and alloys Limitations Non conducting materials can’t be machined.
References [1] Che Chung Wang, Biing Hwa Yan, Blind-hole drilling of Al2O3/6061Al composite using rotary electro-discharge machining, Journal of Materials Processing Technology 102 (2000) 90-102
[2] S.Sivasankar, R.Jeyapaul, Performance study of tool materials and optimization of process parameters during EDM on zrb2-sic composite through particle swarm optimization algorithm, International Journal of Engineering Science and Technology, Vol. 5 No.01 January 2013
[3] Balbir Singh, Jatinder Kumar, Sudhir Kumar, Influences of Process Parameters on MRR Improvement in Simple and Powder Mixed EDM of AA6061/10%SiC Composite, Journal of Materials and Manufacturing Processes, December 2014, 303-312

Wang, Tailoring polyimide composites with low friction and wear at high temperatures, Journal of Applied Polymer Science, 139 (2022)
Yan, Tribological Behavior and Thermal Stability of Thermoplastic Polyimide/Poly (Ether Ether Ketone) Blends at Elevated Temperature, Journal of Macromolecular Science Part B-Physics, 60 (2020) 175-189
Wang, Effect of temperature on friction and wear behaviors of polyimide (PI)-based solid-liquid lubricating materials, Polymers for Advanced Technologies, 26 (2015) 988-993
Xiao, Enhancing recovery speed and anti-wear capability of high-temperature shape memory polymer with modified boron nitride nanoparticles, Journal of Materials Science, 55 (2020) 4292-4302
Liu, MoS2/WS2 Quantum Dots as High-Performance Lubricant Additive in Polyalkylene Glycol for Steel/Steel Contact at Elevated Temperature, Advanced Materials Interfaces, 5 (2018)1700859-1700862

Metal materials are limited in those applications due to disadvantages of electrical insulation and corrosion resistance [1].
Simulation and Experiment Model and Materials Parameters.
Materials parameters and condition are shown in Table 2.
(2) Thermal conductivity of materials doesn’t change with temperature.
[2] X W Zhao, L Ye: Journal of Applied polymer Science, Vol. 111(2)(2009), p. 759

Journal of Huazhong University of Science of Technology: Natural Science Edition, 2014, 42(6), p 22-27
Science China: Technological Sciences, 2010, 11, p 2960-2965
Journal of Huazhong University of Science of Technology: Natural Science Edition, 2015, 43(1), p 16-20
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Science China Technological Sciences, 2009, 52(2), p 273-284.

However, these materials suffer from poor mechanical properties.
Experimental Materials and Methods Methods for Creating the Moldings.
In this study, we evaluated the use of bamboo fibers and powder as raw materials and for molding purposes, respectively.
Two evaluations were conducted on the raw materials.
S., Manson, J, -A., E., Gibson, A., G., A model for the consolidation of aligned thermoplastic powder impregnated composites, Journal of Thermoplastic Composite Materials, Vol. 8, (1995), pp. 138-162

References [1] Huang-Sung Liu, 2005, “A study on the characterization of high nickel alloy micro-holes using micro-EDM and their applications”, Journal of materials processing technology, 169,418-426
[4] H.T.Lee, T.Y.Tai, 2003, “Relationship between EDM parameters and surface crack formation”, Journal of materials processing Technology, 142, 676-683
Luis, 2003, “A study on the machining parameters optimisation of electrical discharge machining”, Journal of Materials Processing Technology, 143-144, 521-526
Bleys, 2004, “Investigation of material removal mechanisms in EDM of composite ceramic material”, Journal of Materials Processing Technology, 149(1-3), 347-352
[7] R.S.Paeade, Suhas S.Joshi, P.K.Brahmankar, and M.Rahman, 2007, “An investigation of cutting forces and surface damage in high-speed turning of Inconel 718”, Journal of Materials processing technology, 192-193,139-146.

Finite Element Analysis of Contact Stress between Rolling Mill Pressure Screw-Pairs Zhengyi Wang 1, a , Lianyun Jiang 1, b and Chunjiang Zhao 1, c 1 College of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi, 030024, China a wang995845@sohu.com, b123jianglianyun@163.com, cZhaoChj75@163.com Keywords: Pressure screw, Stress concentration, Structural parameter, Material parameter, Contact stress Abstract.
The material of the pressure screw is alloy steel with high degree of hardness, and its elastic modulus is 206Gpa, and the Poisson's ratio is 0.3.
The material of the pressure mutter is wear-resisting and soft copper, and its elastic modulus is 103Gpa, and the Poisson's ratio is 0.3.
References [1] X.M.Chen, G.X.Shen and Q.X.Huang: Chinese Journal of Mechanical Engineering, Vol.43 (2007), No.4, p.168 (In Chinese)
[3] Y.P.Liang, Y.J.Zhou: Gansu Science and Technology, Vol.24 (2008), No.9, p.59 (In Chinese)

-Gutiérrez, Surface and Physicochemical Characterization of Phosphates Vivianite, Fe2(PO4)3 and Hydroxyapatite, Ca5(PO4)3OH, Journal of Minerals & Materials Characterization & Engineering, Vol. 8, No. 8, pp 591-609, 2009 [4] L.
Wei, Preparation and Characterization of Natural Hydroxyapatite from Animal Hard Tissues, Key Engineering Materials Vols. 342-343 (2007) pp. 213-216 [5] S.
Kowshik, and S.R Ramanan, Low temperature synthesis of hydroxyapatite nano-rods by a modified sol–gel technique, Materials Science and Engineering C 31 (2011) 1534–1538 [10] Sobzack-Kupiec and Z.
Wéber, Examination of Calcium-Phosphates Prepared from Eggshell, Material Science Forum Vols. 537-538 (2007) pp. 105-112 [14] T.
Park, The facile and low temperature synthesis of nanophase hydroxyapatite crystals using wet chemistry, Materials Science and Engineering C 36 (2014) 152–159 [19] U.

Materials Science in Semiconductor Processing. 42 (2016) 2-14
Journal of Hazardous Materials. 190 (2011) 222–228
Materials Science in Semiconductor Processing. 30 (2015) 321–329
Materials Science and Engineering: C. 91 (2018) 303-310
Materials Science Forum. 855 (2016) 20-32.

Materials Science and Engineering.
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