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The Research on Oil-air Lubrication in Grooved Sliding Bearing Wang Jinlia, Li Liquanb and Liu Shaogangc College of Mechanical & Electrical Engineering, Harbin Engineering University, Harbin 150001, China awangjinli@hrbeu.edu.cn, bliliquan@hrbeu.edu.cn, cliushaogang@hrbeu.edu.cn Keywords: oil-air lubrication; grooved sliding bearing; friction coefficient; temperature rise Abstract.
Many Factors affect the oil-air lubrication of sliding bearing such as oil supply, air pressure, load, bearing structure and so on.
This paper has studied the lubricating property of oil-air lubrication and oil lubrication on grooved sliding bearing, and the performance of grooved sliding bearing under different lubrication parameters and preloads is investigated by measuring the element’s temperature and friction coefficient.
Test Scheme The single factor method, which measures the grooved sliding bearing’s temperature rise and friction coefficient caused by the oil-air lubrication and oil lubrication in the same load and speed, is adopted.

The rubber roller’s deformation and ink transferring rate under different conditions are got, and factors, such as rotation velocity, deformation of rubber roller, ink layer thickness between two rollers, which affect the ink flow and transferring rate are analyzed.
Ink transferring rate is a significant factor for researching the ink flow field.
Fig. 1 Process of ink flow Fig. 2 Process of ink transferring Then the ink transferring rate is (1) It is related to materials, surface finish, peripheral speed, pressure between rollers, the property of ink, temperature and the ink layer thickness before rollers contact.
Factors that affect ink transferring rate and ink flow field are analyzed, such as the pressure and ink layer thickness between two rollers, ink rollers’ rotation velocity.
The foundation of computational fluid dynamics and its application [M].Mechanical Industry Press (2007) [5] Guangyi Pu.

When returning to the room temperature, the specimens are inspected for its structural properties.
The factors that affect the formation and morphology of the cracks include the shape of penetrator, the load, the character of the materials, etc.
And this is just the reason for the massive rectangular spalling of the coating in Fig.4 So in order to improve the adhesion properties of the coating, it’s as important to reduce the density of the radiated cracks on the substrate as to improve the deformation compatibility between the substrate and the coating.
Surely, the factors that affect the interface bonding strength also include the boundary structure of the coating/substrate and the residual stress of the system.
Materials for Mechanical Engineering, 2008,32(5):23-25.

The chemical properties of palm kernel shell ash can affect the strength of high-quality concrete [16-18].
Pozzolan Reactivity: The reactive properties of palm kernel shell ash, in its reaction with calcium hydroxide, will affect its ability to strengthen concrete.
Here are some factors that can affect the strength of high-quality concrete.
Additionally, it can act as a partial substitute for cement, reducing the need for additives and improving the mechanical properties of concrete.
Crack Risk Reduction: the compounds in coal ash can help reduce the risk of cracks in concrete by improving their mechanical and thermal properties.

Analysis of Theory and Model of Background Magnetic Field of High-spinning Projectile Keyu QI 1, a, Chao Xiang 2,3, b, Xiongzhu Bu2, c, Jing Yu2,d 1Science and Technology on Electromechanical Dynamic Control Laboratory, Xi’an, China 2 School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, China 3 Shanghai Electro-Mechanical Engineering Institute, Shanghai, China akeyu-qi@163.com, bxiangchao050726@foxmail.com, cbuxu105@mail.njust.edu.cn, dnjustyujing@126.com Keywords: Background magnetic field; Attitude measurement; Mathematical model; Error analysis Abstract.
The coefficient related to projectile material properties and structure size.
According to the material properties of one projectile and the early work [5], the projectile background magnetic field parameters are set as follows ,, The values of geomagnetic components without BMF are shown in Fig.4.
Comparing errors of different compensation, it is found that: errors affected by PMF are greater than errors affected by IMF and EMF. 
Conclusion The compensation model proposed in the paper is used to compensate the geomagnetic component measuring errors affected by background magnetic field.

The mechanical properties of martensitic boron steel, achieved through conventional press hardening processes, are well known and usually provided as product information by steel suppliers.
Due to the potential advantages of parts with tailored mechanical properties, interest in forming hot stamped boron steel with non-uniform microstructure has arisen.
With respect to this work, since boron steel with different phase states are heat treated from the same initial microstructure, and subjected to the heating rate and soaking time, variations in morphological factors can be neglected [10].
High Strain Rate Properties of Hot Formed Die Quenched Boron Steel.
Grajcar, Heat treatment and mechanical properties of low-carbon steel with dual-phase microstructure.

The results shows that the position and shape of solid-liquid interface is mainly affected by mold temperature, casting speed and cooling distance.
Any factors that affect on the heat transfer process and temperature field distribution of will let the location and shape of solid-liquid interface change.
Fig.1 The casting model and boundary conditions Table 1 Parameters of each schemes Parameter Factor 1 2 3 Mold temperature T/ K 1356 1373 1383 Casting speed / mm·min-1 80 100 120 Cooling distance L / mm 20 40 60 Mathematical Model Assumptions and Boundary Conditions.The factors of height of liquid, melt temperatures and vibration are not considered, for it is easy to control relatively.
The room temperature tensile mechanical properties test, the tensile strength of copper rod is 145.3MPa, the elongation ratio is 50.6% and the section shrinkage ratio is 56.6%.
Conclusions •The simulation and experimental results show that the position of solid-liquid interface is mainly affected by mold temperature, casting speed, cooling distance in the process of HMCC, and were moved to mold export with the improvement of mold temperature and casting speed or the reduce of cooling capacity.

Subjective evaluations include both tactile and visual evaluations [1-3], but it has been shown that factors such as subject selection and environmental conditions can affect the results obtained [4].
For this phenomenon, the theoretical formulae for the evaluation of the mechanical properties of the pile materials are extended as shown by Eqs. (2) and (3) [15,16].
Effect of mechanical properties on tactile of cotton terry cloth.
Tactility and mechanical properties of marketing towel.
Water absorption and mechanical properties of pile-knit fabrics based on conjugate N/P microfibers.

Introduction The physics of fabricating semiconductor keeps changing due to prevailing factors such as efficicency, eco-friendliness and content availability.
Zinc was selected based on recent discovery on the optical and electronic properties of zinc oxide [5-10].
The electronic properties of the samples were estimated from the UV-Vis absorbance.
Li et al., “Optical properties of single-crystalline ZnO nanowires on m-sapphire,” Applied Physics Letters, vol. 82, no. 13, pp. 2023–2025, 2003.
Medicinal Plants of East and Southeast Asia: Attributed Properties and Uses.

This research investigated the change in the mechanical properties of steel grade 11 (ASTM A335) loaded constantly at room temperature.
It is believed that steels subjected to the creep stress at elevated temperature have a tight relationship between microstructure evolution and mechanical properties of the steel [5-8].
Prediction of lifetime Testing of mechanical properties Microstructural observation Tensile test Hardness test TEM SEM Optical microscopy Fig. 1.
Mechanical properties of the specimens Normally, recovery process occurred very slowly in room temperature but faster in elevated temperature.
Shingledecker, Microstructural evolution and mechanical properties of Grades 23 and 24 creep strength enhanced ferritic steels, International materials reviews 62 (2016) 32-56