Search results

Fig. 1.
Table 1.
References [1] O.
Cleaner Pro. 34 (2012) 1-8
Nilssona, Mechanical properties of lime–hemp concrete containing shives and fibres, Biosystems Engineering, 103 (2009) 474-479

The observed changes were attributed to Mg-B-O oxygen-enriched regions Fig. 1.
Table 1.
References [1] C.
Tomsic, The effect of high-pressure synthesis on flux pinning in MgB2-based superconductors, Physica C: Superconductivity 479 (2012) 111–114
Magn. 26 1 (2013) (ISSN 1557-1939) DOI 10.1007/s10948-012-2001-7.

Kozma 2 1, 2 Budapest University of Technology and Economics, Department of Machine Design 1 bollok.peter@gszi.bme.hu, 2 kozma.mihaly@gszi.bme.hu H-1111 Budapest, Mőegyetem rkp. 3., Hungary Keywords: pin-on-disk machine, sliding friction, tribologically transformed layers, second phase, plastic-deformation, work-hardening Abstract.
It seems from the data in Figure 1 and 2, that the sliding speed has an effect on the width and depth of wear-tracks too, depending on the load and the material.
Depth of wear tracks (mild steel disks, without lubrication) 2,1 3,7 6,4 2,9 4,2 6,3 12,6 17,7 62,1 76,7 62,4 72,8 169,1 236,1 376,1 0 100 200 300 400 500 2562 1002562 1002562 1002562 1002562 100Speed [mm/s] Depth of wear track [µµµµm] 10N 300N 100N 50N 20N Load Depth of wear tracks (mild steel disks, lubricated) 8,78,8 8,4 36,8 41,7 38,5 0 5 10 15 20 25 30 35 40 45 50 25 62 10025 62 1002562 1002562 1002562 100Speed [mm/s] Depth of wear track [µµµµm] 10N 300N 100N 50N 20N Load a, b, Figure 1: The depths of wear tracks Depth of wear tracks (aluminum, without lubrication) 104,2 102,2 114,0 171,3 243,5 167,4 434,3 479,2 446,0 689,5 752,1 478,4 863,7 853,1 739,4 0 200 400 600 800 1000 25 62 100 25 62 100 25 62 100 25 62 100 25 62 100Speed [mm/s] Depth of wear track [µµµµm] 10N 300N 100N 50N 20N Load Depth of wear tracks (aluminum disks, lubricated) 21,4 23,1 22,5 62,6
On every disk we measured the hardness 5 times: 2 times on the original surface and 3 times in outermost wear marks (where the sliding speed was 0,1 m/s).
References [1] G.

Fig. 1 The Schematic illustration of the sol-gel method.
In the Fig. 4(c), the first three absorption peaks at the wave number of 479 cm-1, 615 cm-1 and 829 cm-1 are weak, but they represent the bending vibration of Ni-O bond and W-O bond.
After that there are two sharp absorption peaks, the wave numbers of 1639 cm-1 and 3415 cm-1 are caused by the water molecules in the sample.
References [1] P.
Granqvist: Materials Today: Proceedings, Vol. 3 (2016) No.1, p.2

Table 1.
References [1] R.
Section a 52,1 (2013) 57-62
Tech. 6,1 (2020) 874-878
Sci. 169-170(2001) 476–479.

As shown in Fig.1, the SEM result indicated the particle size of jarosite residue was about 1–5μm.
In all experiments, the flow rate of mixed gas is 200mL/min and the volume ration of nitrogen to hydrogen is 3:1.
As the solid/liquid ration decreased from 1:6 to 1:10, the metal recovery rate for both nickel and iron increased to near 99.5%.
References [1].
The Metallurgical Society, New York, USA, pp. 479– 492

Welding Journal, 2003, 82(1): 42-48
JLW, 2008,46:470-479
Materials Characterization, 2007, 58(1):82-86
Journal of Alloys & Compounds, 2008, 458(1):178-183
Materials Science & Engineering A, 2009, 518(1):144-149

Krishnakumar et al. conducted a synchronous optimization of clamping forces and the fixture layout using the genetic algorithm [1].
Multilayer cutting model The research object is the clockwise side milling of thin-walled parts as shown in Fig.1.
The wall thickness varied from 4 mm to 3 mm and the finishing allowance is 1 mm which is divided into 3 cutting layers.
References [1] Krishnakumar Kulankara, Srinath Satyanarayana, Shreyes N.
[6] Lionel Arnaud, Oscar Gonzalo, Sébastien Seguy et al, Simulation of low rigidity parts machining applied to thin-walled structures, International Journal of Advanced Manufacturing Technology, 54 (2011) 479-488

Table 1.
References [1] X.
A 499(1-2) (2009) 162-166
B 29(1) (1998) 163-176
Forum 475-479(2005) 65-68.

Table 1 The chemical composition of experimental steels and the chemical composition of corresponding National Standard automatic steel (wt%) Heat number of experimental steels Type of steel Chemical composition w([C]) w([Si]) w([Mn]) w([P]) w([S]) w([Sn]) w([Pb]) 1 Y20Sn 0.21 0.46 0.85 0.048 0.28 0.013 － 2 Y20Sn 0.18 0.40 0.80 0.050 0.26 0.049 － 3 Y20Sn 0.20 0.38 0.79 0.055 0.29 0.088 － 4 Y20 0.21 0.36 0.79 0.056 0.29 － － GB/T8731-88 Y15 Pb 0.10～0.18 ≦0.15 0.80～1.20 0.05～0.10 0.23～0.33 － 0.15～0.35 GB/T8731-88 Y20 0.17～0.25 0.15～0.35 0.70～1.00 ≦0.06 0.08～0.15 － － Testing Results of Mechanical Property.
Table 2 Compare of the testing result data of mechanical property of Y20Sn and the standard requirement of Y20 Heat number Steel Type Diameter (mm) Tensile strength (MPa) Extensibility (%) Reduction of area, (%) Hardness (HB) 1 Y20Sn 5.990 483 29.33 55.41 132 2 6.010 479 28.80 58.75 138 3 6.008 432 28.42 58.64 136 GB8731－88 Y20 － 450～600 20 30 ≦175 Testing Results of The Machinability.
Fig. 4 and Fig. 5 show the wear curves of cutting tool for developed steel Y20Sn #1 and compared Y20.
Fig. 2 Cuttings of developed steel Y20Sn #2 Fig. 3 Final appearance of experimental steel Y20Sn( A-#1, B and C-#2, D and E-#3) Fig. 4 Wear curve of cutting tool for developed steel Y20Sn #1 Fig. 5 Wear curves of cutting tool for compared Y20 Fig. 6 T-V curve of Y20Sn #1 and Y20 Analysis of inclusion in developed steel Y20Sn.
References [1] Yufu Yu, Minglv Ye, Zhijian Zheng: Environmental Chemistry (Fudan University Press, Shanghai 1997).