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Brief principles of crankshaft fillet rolling Fig.1 Crankshaft Fillet Rolling Strengthening diagram As shown in Figure 1, as the crankshaft fillet rolling, the crankshaft rotates around its spindle, Rolling head and Support head are mounted on the rolling clamp body, the rolling clamp body clamps the crankshaft and pressurizes to the predetermined pressure by the pressurized cylinder, The active rotation of the crankshaft journal forms the journal friction between the rolling wheel and journal and drives the rolling wheel to rotate, rolling the crankshaft journal.
The pressure makes the surface of plastic deformed through the rolling wheel, then there will be residual compressive stress, which will exist permanently. significantly increasing the strength of the crankshaft journal, significantly improve the strength of the crankshaft journal.
Because the Q235 steel has good strength and stiffness, which could meet the materials requirements.
Conclusion From the above model improvement program and analysis results, we can see the weight of the rolling arm is significantly reduced by two optimization, the stress distribution is more reasonable when the rolling is in a clamping state, not only saves materials, makes full use of the strength characteristics of the materials, but also optimizes the lightweight of the rolling arm, provides a theoretical basis for the optimization of the single degree of freedom crankshaft fillet rolling machine clamp structure.
Science and Technology Innovation Herald(2011).

There braking systems all use break discs with a percentage of over 99% derived from metallic materials.
The second relates to the use of surface layers with special properties such as ZrO2, SiO2 or other materials.
Study of the interaction between microstructure, mechanical and tribo-performance of a commercial brake lining material, Materials and Design 59 (2014) 84–93
Istrate, Applied Surface Science. 352 (2015) 169
Cimpoeşu, Key Engineering Materials. 660 (2015) 97-102

Simulation and Optimization of Die Forging Process for High Pressure Valve Bonnet Jianlin Zhanga, Liwen Zhangb, Yang Yangc and Zhi Zhud School of Materials Science & Engineering, Dalian University of Technology, Dalian 116024, China acommat@mail.dlut.edu.cn, bzhanglw@dlut.edu.cn, cyyajxc@gmail.com, dstephen1985_chu@163.com Keywords: Valve bonnet, Die forging, Yield, FE simulation Abstract.
Oh: International Journal of Mechanical Sciences, Vol. 24 (1982) No.8, p. 479
Kim: Journal of Materials Processing Technology, Vols. 143-144 (2003), p. 729
Ohdar: Journal of Materials Processing Technology, Vol. 203 (2008) No.1-3, p. 102
Rennie: Materials and Design, Vol. 30 (2009) No.7, p. 2490

It is deemed that the Nibase alloys have the best high-temperature mechanical properties comparing with other materials [1].
In spite of the stated benefits, it has low thermal conductivity and thermal expansion [4], so it is categorized into difficult-to-cut materials.
Analysis and introduction of theories 2.1 Strengthening mechanism of Nickel base superalloy The strengthening mechanism of difficult-to-cut materials possesses a good strength and ductility in both medium and low temperature.
,Aucote,J., " Performance Sialon Cutting Tools When Machining Nickel Base Aerospace",Materials Science and Technology ,No.2,1986,pp.700-708 [7] J.Lorentzon,N.
Wang,”Behaviors of end milling Inconel 718 superalloy by cemented carbide tools ”, Journal Of Material Processing Technology,Vol.201,pp460~465,200 [12].

The effects of cutting conditions on the surface roughness in a micro-end-milling process of a mold material are described in this paper.
Furthermore, the occurrence of tool slip-over, rounded cutting edges, or the inclusion of tiny foreign materials in workpieces may greatly affect the machining accuracy because of the tight tolerance requirement in cutting conditions such as the depth of cut and the feed rate.
With this background in mind, a study was conducted on the effects of various cutting conditions on the surface roughness formed in the micro milling of mold materials with a micro-end-mill. 2.
The coolant used was a water-insoluble material, which was applied to the surface of the workpiece before machining. 3.
Liang: Effects of Ploughing Forces and Friction Coefficient in Microscale Machining, Journal of Manufacturing Science and Engineering, 129 (1971) 26.

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

Materials Characterization, 151, 151-165, 2019
Microstructure evolution associated with adiabatic shear bands and shear band failure in ballistic plug formation in Ti–6Al–4V targets.Materials Science and Engineering: A, v. 516, n. 1, p. 205-216, 2009
[12] BOAKYE-YIADOM, S., ABDUL KHALIQ KHAN, NABIL BASSIM, A Systematic Study of grain refinement during impact of 4340 steel, Elsevier, Canada, 19 march,2014, Materials Science & Engineering A 605, p. 270-285, 2014
Dynamic behavior of materials.
Materials Science and Engineering: A, 457(1-2), 205-218, 2007.

Table 1 Chemical composition of the parent glass (wt %) CaO SiO2 Al2O3 MgO 26 54 10 10 Experimental materials and method Experimental materials.
CaO-MgO-Al2O3-SiO2 system glass-ceramics was prepared by melting method in this experiment, and the BF slag and quartz sand were used as the major raw materials, added with a small amount of pure chemical reagents CaO, MgO and Al2O3.
All kinds of materials were respectively ground to smaller than 200 mesh and made into mixture according to the raw material proportion in Table 3.
References [1] D.L.Lin: Process Research and Technical Progress of Mining, Mineral Processing and Smelting for Baiyanobo Ore, edited by the Publishing House of Metallurgical Industry, Beijing, (2007) [2] X.G.Liu: Science &Technology of Baotou Steel (Group) Corporation Vol. 26 (2000), p. 35-37 [3] C.L.Yu, X.M.Guo: Science &Technology of Baotou Steel (Group) Corporation Vol. 37 (2011), p. 87-89 [4] M A.A.Francis: Journal of the European ceramic society Vol. 24 (2004), p. 2819-2824 [5] Z.W.Liu, Y.X.Sun, Z.Y.Zhong: Science &Technology of Laiwu Steel (Group) Corporation Vol. (2006), p. 49-50 [6] H.X.Lu, H.Y.Liu, L.J.Li: Brick and Tile Vol. (2008), p. 42-43 [7] G.A.
Khater: Ceramics International Vol. 28 (2002), p. 59-67 [8] H.Y.Liu, Y.Y.Sun, X.Q.Ren: Brick and Tile Vol. (2010), p. 58-61 [9] W.Zhang, S.M.Yang, X.L.Zhou: Journal of Xinjiang University (Natural Science Edition) Vol. 27 (2010), p. 209-213 [10] Z.J.Wang, W.Ni, Y.Jia: Journal of Non-Crystalline Solids Vol. 356 (2010), p. 1554-1558 [11] H.N.XIAO, Y.Liu, H.X.Shi: Science and Art of Ceramic Vol. (2003), p. 42-46

References [1] Xianlin Dong: Journal of Chinese Academy of Sciences.
Cheng: Advanced Materials Research.
[5] Jiang M, Komanduri R: Key Engineering Materials.
Yuan: Advanced Materials Research.
[10] Zihua Hu, Manke Gao, Julong Yuan and Xiangjun Yang: Advanced Materials Research.

This technology can be developed with certain materials.
Series: Materials Science and Engineering, 196, 012016 (2017)
Series:Journal of Physics: Conf.
Niewa, Materials Chemistry and Physics, 163, 416–420 (2015)
Materials Science Forum, 966, 282-289 (2019)