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The forming quality is the important factors to improve the performance of the gear shaft, but there are a lot of factors to influence the forming quality.
Test Factors and Level.
So choose module, number of teeth, rolling temperature and feed rate of mold as the main influence factors[6].
According to the metal material properties and process characteristics of cross wedge rolling, temperature range from 1000 ℃ to 1150 ℃.
(2) Comparison R of each factors, show that the four factors in order is B (module m), C (number of teeth z), A (temperature T), D (feed rate V)

acai2509@sohu.com , b08116297@bjtu.edu.cn Keywords: revolving sealing; influence factor; microstructure; starting friction torque Abstract.
This problem has become a key factor restricting the application of magnetic fluid rotation sealing.
The length and the deviation of the chains in the flow will therefore be determined by the equilibrium between the two torque, the magnetic one and the mechanical one, acting on the chain [4].
is a scale factor increases with the decrease of temperature because the existing of chain-like structure.
So the big particles affect largely the rheological properties of magnetic fluids. 2 When a revolving shaft starting, the chains must be destroyed, so it eventually lead to the high starting torque.

Residual stress is an important factor in quality of the welding joints[1].
Residual stresses do not only affect the corrosion, cracking and fatigue strength in the mechanical properties of the welding joint, but also greatly affect physical mechanical characteristics of the material, so the measurement and calculation to the residual stresses are always important details to be studied in high-speed train welding field.
Though laboratory test has reality, the results in the same model measured in different times can have great diversities, the results cannot avoid the influences caused by personal and environmental factors.
According to the mathematical model above,when using Sysweld to simulate welding thermal elastic-plastic finite element, we needed to take the materials’ nonlinearity into account, that means the correlation between the material properties and the temperature should be considered.
Fig. 8 shows that lateral residual stress has no obvious distribution rule, this is mainly because the factors infulencing the transverse residual stress are more, all the factors including the heterogeneity of materials, the irrationality of the component design brought by designing, the welding sequence and direction will affect the value and distribution of the lateral residual stress.

In this work it is shown how the microscopic residual stress state in 6061Al-15vol%SiCw composites can be modified by plastic strain and by isothermal annealing (the latter, affecting also the precipitation state).
They have improved mechanical properties with respect to those of the corresponding unreinforced metallic matrices and this improvement is achieved without a significant increase in weight.
Moreover, the (311) plane for fcc lattices is one of the less affected by texture between the low-indexed planes.
These results point out that the difference of CTE and the temperature drop are the most important factors determining the magnitude of the m-RS.
Since the latter are not affected by plastic deformation, the present result is expected.

Sadeghi et al. performed the Taguchi’s method of assessed several factors affecting soil erosion [5].
In case of applied material properties inside gimbal, target mass of structure is 25.1kg.
The total of case of using Table 3 and then combining applied material properties housing and gimbal Frame is 36 cases.
If Inside gimbal’s material properties were applied differentially according to circumstances, the result of simulation is regarded as not reliability.
Behnia, Soil erosion assessment and prioritization of affecting factors at plot scale, J.

The influences produced by various factors for the formation of flake fibers have been verified through testing, including the improved tool material, the wood grain, the cutting speed and the improvements for locating specimen.
Through mechanical processing method, the structure of wood fiber cells will engender an adjustment process on cell arrangement in the direction of increasing strength, and then eliminate the natural defects of timber, change the arrangement of fiber tissue affecting its strength[2].
The role frequencies of power also affect the separation production and quality of fiber.
The cutting theory of micron flake wood fiber is a purely mechanical cutting method in the best cutting direction on purely physics[16].
Ultrastructure of the cell wall of unbeaten Norway spruce pulp fibre surfaces: implication for pulp and paper properties.

Table1 show the factors and their levels employed in the experiments.
Maybe this is due to act of the eggshell particles as nucleation centers (inoculation) and therefore improved mechanical properties.
Eggshells can be used to improve the hardness properties of aluminum metal 2.
Motgi, "Study on mechanical properties of Fly ash and alumina reinforced aluminum alloy (LM25) composite", IOSR-JMCE, Vol.7, pp41-46, 2013
Eckert," Effect of Particle Size on Microstructure and Mechanical Properties of Al-Based Composite Reinforced with 10 Vol.% Mechanically Alloyed Mg-7.4%Al Particles " Technologies, 4.37, 2016

S.YUSOF2,b 1,2Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia, Batu Pahat, Johor,Malaysia.
It will be investigated here and any important parameter will be affected the printing quality will be determined.
In term of surface properties of PDMS, it can be readily modified using combination of oxygen plasma treatment and formation of Self Assembled Monolayers (SAMs) [5].
Besides that, it shrinks by a factor of -1% upon thermal curing, and it can be readily swelled by nonpolar solvents such as toluene and hexane [5].
The roller speed, adhesion factors of PDMS, friction between PDMS and roller, ink viscosity, annilox roller engraving, and subtract are important factors might be affect the performance of PDMS as a plate for flexography printing.

The testing methods must be adapted to certify the properties stated in the product data sheet.
An anisotropic behavior of the welded balls is observed when determining mechanical properties. 4.
Yildirim, Effects of welding procedures on mechanical and morphological properties of hot gas butt welded PE, PP, and PVC sheets, Polymer Engineering and Science. 48 (2008) 732-46; [22] S.
Mughal, Optimizing the weld factors affecting ultrasonic welding of thermoplastics.
Standard Test Method for Tensile Properties of Plastics; ASTM International: West Conshohocken, PA, USA, 2014; [33] S.

Now China has a lot of low-efficiency, large- pollution and small-capacity captive power plant, it is not conducive to energy conservation, also affect the power company electricity sales, so we should achieved “ordering power by heat” to limit the actual generated energy that does not belong to the generated energy based on “ordering power by heat”.
Nearly one-third generated energy of some of the captive power plant is not really belong to the generated energy that based on “ordering power by heat”, thus affecting the electricity sales of the power company.
(2) where, is main stream flow, kg/s; is turbine effective enthalpy drop, kJ/kg; andare turbine regenerative heating of extraction, and heat extraction share; andare turbine regenerative heating of extraction and insufficient heating extraction acting factor; is steam turbine regenerative heating of extraction steam flow, kg/s; the i is series of regenerative heating of extraction steam (i=1,2,…,8); the h is heating extraction [1].
We access to the import and export refrigerant temperature and pressure of all levels of the heater of the steam side and water side in steam turbine thermal test, by means of the h-s diagram or table of thermodynamic properties of water and water vapor we can get the steam water enthalpy of entrances at all levels of the heater, then we can apply the calculation of the heater conventional heat balance equation to calculate the regenerative heating of extraction steam flow in the test conditions at all levels; we use the value benchmark of deaerator inlet condensate flow measurement in the specification of Chinese GB8117-87 and the American Society of Mechanical Engineers PTC6-2004 and other thermal test to calculate the water flow through the regenerative system flow balance, then launch the main steam flow.
(6) where, is the mechanical efficiency of the turbine; is generator efficiency [2].