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Find the allowable radial feed: S = tnx , (7) where nx – the number of passes of the textured wheel per minute. 3.
Calculate the arc length of the cutting surface of the segment using the formula: b = (πd – na)/n, (11) where d – the diameter of the cutting surface of the textured wheel; n is the number of abrasive where d – the diameter of the cutting surface of the textured wheel; n – the number of abrasive segments in the wheel. 8.
The larger the D of the textured wheel, the higher the cutting speed, the smaller the volume of metal removed by a single abrasive grain, and the easier its working conditions.
With an increase in the rotation frequency of the workpiece, the volume of metal removed by a single abrasive grain increases, which leads to an increase in surface roughness.
To intensify the grinding process of bearing steel, the design of a precast textured wheel and a device for the centrifugal giving of LCL directly to the local contact areas of cutting and pressing abrasive grains with the processed material has been developed. 3.

The parameters that varied were the speed and the number of pass.
In this case constant traverse speed between 1 and 16 mm/s and also 1 until 16 number of pass were used.
In the smooth cut region, all the energy of the beam is present and all the minerals grains are cut homogeneously, in a flat surface.
Some assays were made using greater number of passes and traverse speed, which can be attain 64.
On the other hand they grow up when the number of pass is increased as can be observed in 3D Figures 3 to 6.

Causticity of nickel surface After stripped gold and palladium layer , observe and analyse by using scanning electron microscope (SEM) , require nickel surface light and smooth, grain boundary clear, grain size uniformity, have no corrosion.
SEM photos are shown in Fig .3 : Fig .3 Nickel surface microcosmic appearance after stripped Au / Pd layer The above scanning electron microscopy (SEM) analysis show that, nickel surface is light and smooth, grain boundary clear, grain size is uniformity, have no signs attacked by liquid medicine between grain boundary, this show that ENEPIG technology can effectively avoid ENIG process produced nickel layer black mat flaw.
Fig .6 TEM analysis photo of interface alloy compound layer Fig .7 Shearing force and aging time scatter plot Table 2 IMC feature points quantitative analysis result (EDS) Sn-3Ag-0.5Cu Analysis point at% P Ni Cu Pd Ag Sn 7 0.1 17.2 35.1 1.1 0.1 46.4 6 0.0 18.9 33.2 0.6 0.1 47.3 5 18.0 64.2 0.1 0.0 0.0 16.8 3 28.7 68.7 0.4 0.0 0.1 2.1 From Fig .6 and Table 2 analysis show, content of palladium atom numbers is 1% , this content can not substitute for crystal lattice element , palladium can enter into between crystal lattice unit and crystal lattice flaw, crystal lattice usually does not cause change .

A feature of the Raman spectra of the material is the scattering by the Frohlich-interaction-induced normal Raman-inactive LO-type modes, resulting in a sharp peak at wave number 348cm-1.
AFM images confirmed this opinion.There was nearly no grain on the surface of the thin film unannealed (Fig.2 (a)), and grains shape became perfect when the films were annealed under vacuum and Ar atmosphere, especially Ar atmosphere (Fig.2(b) and (c)).
The average diameter of the granular grains increased with the increasing of the partial pressure.
The increase in the grain size with the partial pressure can be interpreted as a consequence of the enhancement of the surface atomic mobility, which enables the thermodynamically favored grains to grow in size [16].

The less the grain sizes of nanocrystalline ZnO, the greater the surface area will be, and the more the numbers of oxygen vacancy and the surface effects result [4], which make nanocrystalline ZnO more easily bonded with the atoms S and H in molecules H2S to lower the surfacing energy.
The average grain size was estimated according to the Scherrer equation, XPS test is performed by USA PHI5700ESCA X ray photoelectron spectroscopy.
Results and discussion TEM results demonstrate that the primary grain sizes of nanocrystalline ZnO calcined at 260, 360, 460 and 550 °C from the precursor is 14.3，21.2，24.1 and 35.3 nm, respectively.
(O2:1.23%) b a PE Intcnsity (arb units) Binding Energy (eV) Fig.1 S2p spectra for nanocrystalline ZnO after desulfurization 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 0 200 400 600 800 1000 g f e d c b a C H2S / mg⋅m-3 Time/min a.14.3nm(o 2:1.23%); b.14.3nm(o 2:0%); c.21.2nm(o 2:0%); d.24.1nm(o 2:0%); e.35.3nm(o 2:0%); f.analysed purity ZnO(o 2:1.23%); g.analysed purity ZnO(o 2:0%) Fig.2 Desulfurizing activity of nanocrystalline ZnO Fig.2 illustrates the performance for eliminating H2S at room temperature by nanocrystalline ZnO with different grain sizes.
However, as the crystalline sizes increased, and oxygen vacancy is decreased, the performance of desulfurization becomed less effective, indicating that grain sizes and oxygen vacancy is the main factor to affect the performance of desulfurization.

Fig.1 XRD patterns of LiNi1/3Co1/3Mn1/3O2 powers sintered at different temperatures In Fig.3, all samples have narrow distributions of grain size and faceted grain morphology.
As temperature increases, the original grain size grows from 200-300nm at 700°C to 800-900nm at 1000°C and the particle morphology becomes more well-shaped.
Specific discharge capacity as a function of the cycle number for LiNi1/3Co1/3Mn1/3O2 for the first 30 cycles at 30°C in 1 M LiPF6 / EMC-DMC (1:1 v/v ) The electrochemical properties of LiNi1/3Co1/3Mn1/3O2 calcined at various temperatures are summarized in Table2 and Fig.4.
Sample with good crystallinity and optimum grain size tends to show better electrochemical performances.
With the increase of calcinition temperature, grain size tends to increase and the crystallinity is improved.

For coarse-grained soil, the assumption based on the observed experimental RI data should use coarse-grained soil at the rate of failure of the primary crusher relationship between stress ratio, but it seems overly complex and usually to not easy to get.
For triaxial compression test, given the increasing number of axial strain (),the stress state in RI - find the shear stress-strain curves corresponding, specific steps are as follows: （1） Let , , , here （2） For, solving the following equation
(10) Fig.1 The root of equation Fig.2 Stress strain curves of coarse-grained soil betweenand From formula (8) and (10) can be seen, the root is between the,,and, shown in Figure 1.
Test and verify the rationality of improved method In order to verify the feasibility and rationality of the improved method, the stress-strain curve with the RI state of a coarse-grained soil stress and strain test curve (as shown in Figure 2) should be calculated by using the imporved method, the results is shown in Figure 3 (confining pressure) and 5 (confining pressure).The parameters of the HISS model obtained from RI curve which is determined by the above method is shown in Table 1.
These efforts hope to make some useful attempts for the application and validation of coarse-grained soils disturbed state concept model.

An oil tank was set directly down to the rolls to avoid further grain growth as the as-cast strip was dipped into the oil tank as soon as it exits from the rolls.
As shown in Fig.4, the grain boundaries can still be identified clearly after immersed in 3.5% NaCl solution for 48h at 50℃ and only a very small amount of corrosion sites could be found.
Grain boundary-like cracks generated at the black areas shown in Fig.4(a) and make the sample surface appears local transgranular fracture.
Acknowledgement This work was supported by Cooperative Research and Development Center for Advanced Materials (CRDAM) funded by the Institute for Materials Research (IMR), Tohoku University (Project Number 18G0042).
Processing and mechanical properties of fine-grained magnesium alloys [J].

Their observations of the weld surface finish and plastic flow behavior showed that the stirring effect increased and number of defects decreased when the traverse speed was decreased.
AA5083 exhibited a typical globular grain structure while AA 6061 revealed an equated structure with many etch-pits, which may be sites of second precipitate particles.
The stir zone reveals mixture of fine recrystallized grains of AA5083 andAA6061 and a double basin-shaped appearance with zigzagged boundary between the two alloys.
The grain structure within the nugget zone is fine and equiaxed and the grain size significantly smaller than that in the base materials due to the higher temperature and extensive plastic deformation by the stirring action of the tool pin as shown in Figure 4.
The grain structure shows obviously at the HAZ region on Figure 4 (a), the boundary line on the weld nugget zone as in Figure 4 (b).

However, the formation of CuBi2O4 phase could restrain Cu2+entering into the lattice of BST ceramics and reduce the number of oxygen vacanies.
During sintering process, the existence of liquid phase CuBi2O4 promoted the grain growth of BST ceramics.
At the cooling phase, the CuBi2O4 crystallined and stayed at the grain boundaries.
Typical columnar grain morphology and clear grain boundaries were observed for the sample with Bi2O3 amount of 20wt% and its structure was quite dense.
It also can be seen from Fig. 4 that a great deal of glass phases distributed on the grain boundaries, which resulted in dielectric loss.