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It is a well known fact that the two-phase zone width, i.e. the temperature interval containing both molten metal and crystallized dendritic network, affects the feed of the billet, the development of segregation heterogeneity and hot cracks [6, 7].
The temperature range of solidification is conditioned by a number of factors, steel chemical composition being the major one.
It deteriorates heat removal, negatively affects crust thickness and billet macrostructure in general thus making the central zone less sound.
It allows to increase concast billet strength properties and avoid a number of defects which decrease product quality.
Li Mold Thermo-Mechanical Rigidity Criterion for Surface Quality of Continuous Casting of Steel.

Flow Field Analysis of Self-energizing Oil Screen with Dynamic Filtration Rollers Based on Gear Train Shaojie Xin1,a Qingling Li 1,2,b 1School of Mechanical, Shanghai Dianji University, Shanghai, P.R.China 2School of Mechanical and Power Engineering, East China University of Science Technology,Shanghai, P.R.China adaqxinsj@163.com, bliqingling2003@126.com Keywords: self-energizing; dynamic filtration; oil screen; gear train; flow field analysis Abstract.
In order to get symmetric model and not affect dynamic behavior of the transmission, the first level gear transmission is simplified to distribute symmetric the impeller.
Fig.2 Meshing model of flow field Mechanical Model of CFD Analysis.
Default values are assigned to relaxation factors.
Set fluid property, the density of fluid is 900kg/m3.

Harris defined the problem of the contact zone size with the help of a load distribution factor (ε).
A value for the load distribution factor is first assumed, and then the bearing deflection is calculated.
Instead, stiffness depends on the character and intensity of the external load, the elastic properties of the bearing element material, the geometry of the coupled parts of the bearing, the total number of rolling elements in the bearing, the internal radial clearance, deviations from the working surfaces of a bearing, and other factors.
The total number of rolling elements is a key structural characteristic of a rolling bearing, affecting its operational accuracy and performance.
Thesis, Faculty of Mechanical Engineering in Belgrade, 1987

Factors that affect fretting are including: material properties, fretting amplitude, fretting frequency, contact pressure and contact surface geometry morphology and so on.
The existence of the particle reduces the mechanical contact area and contact pressure, thus increasing the resistance, the contact resistance increases.

Based on the principle of mechanics of materials, can be expressed as: (1) where, is flexural resistance section factor.
It is clear that the failure of section M-N depends on Eq.2: (2) where, is the permit stress of M-N section, which is greatly affected by brazing conditions.
Therefore, the mechanical properties of diamonds reduce.
It is found that the grit protrusion height is a main factor in influencing the shearing forces of brazed diamonds.

They were kept in the grooves and thus protected against the mechanical damage.
Molds can adversely affect the surface of the structure and human health [3, 4].
Table 2 Characteristics of the used materials Material Thermal conductivity coefficientlu [W/m2 · K] Specific heat capacity cu [J/kg · K] Density ρu [kg/m3] Moisture resistance factor μu [-] Diffusion conductivity factor δu [s] Lime plaster 0.87 840 1600 6 0.031 · 10-9 Brickwork (solid burnt bricks) 0.80 900 1700 8,5 0.022 · 10-9 Cement-lime plaster 0.99 790 2000 19 0.01 · 10-9 Adhesive mortar ETICS 0.70 840 1300 40 0.0047 · 10-9 Polystyrene foam 0.04 1270 20 35 0.0053 · 10-9 Reinforcing layer ETICS 0.75 840 1000 50 0.0037 · 10-9 Silicate plaster ETICS 0.8 840 1750 50 0.0037 · 10-9 Boundary conditions can be seen in the Table 3.
Fabian, Comparison of the impact of the ventilation ducts on thermal properties of the exterior walls, J.

Usually the mechanical separation method is: washing-gravity, washing-magnetic separation, washing-gravity-magnetic separation and gravity-fine grinding-magnetic separation technology etc.
Ore properties Ore samples.
Before the grinding tests process, single-factor optimizing tests, such as the feed rate, the pulsation rate and magnetic medium size were performed with the grinding fineness of 75% below 0.074 mm.
From Fig.6 we can know that the magnetic field density affect the Fe and Mn recovery obviously.
After the single-factor optimizing tests the optimal conditions were determined, and the final recommended flowsheet was shown as Fig.7.

Introduction Because of coal anisotropy of physical and mechanical properties, as well as the presence of cleat and fissures, the integrity of coal is undermined, and coal is easily broken.
This classification standard is not applicable for coal seam with depth of a few hundreds meters, thereby the distribution of coal fracture prediction results is affected.
Because coal classification method and standard are yet been established for the current domestic to guide coal seam fracture zones forecast, internal factors and external factors of coal fracture is not comprehensive enough, and the safety requirements can not be met for coal seam drilling.
Hoek-Brown criterion can be expressed as follow [8-9]: (2) Where, are the maximum and minimum principal stress; is the uniaxial compressive strength for intact rock; is rock constant;, are the coefficient of rock properties.
[2] ZANG Xiu-ping, RUAN Han-ting and LI Ping, “Status quo and trends analysis of factors considered in rock mass classification methods,” Rock and Soil Mechanics, vol. 28, pp. 2245-2248, October 2007

Kwon et al. [12] underline the fact that form, size and specific area of fillers have a significant effect on mechanical properties of polymeric composites.
Khalil [13] draws attention to the fact that several studies indicate that smaller particles improve mechanical properties.
Nakamura et al. [14] investigated the effect of particle size (between 2 and 50μm) of silica on the mechanical properties of epoxy resins, and concluded that smaller ones with narrow grain size distribution patterns help to improve mechanical properties.
Conclusions The properties of silicas and RHAs were quite similar.
Khalil: Impact of the surface chemistry of rice hull ash on the properties of its composites with polypropylene.

This factor can prolong production time cycle and reduced productivity in semiconductor packaging industry.
The material properties is shown in Table 1.
Thermo-mechanical properties of UF8829 Glass Transition Temperature, Tg [oC] 122 Coefficient Thermal Expansion (below Tg/above Tg) [ppm/oC] 25/80 Young’s Modulus [GPa] 6.45 The test vehicle was HiCTE CBGA package composing 12 x 15 mm2 active silicon die which considered as large size of die.
Load and displacement sensing nanoindentation is used for determining mechanical properties such as hardness and elastic modulus of materials in small volumes.
The data was processed using proprietary software to produce load–displacement curves and the mechanical properties were calculated [6].