Search results

Because of the resistance wire (or wire rod body resistance), air convection, the temperature and other environmental factors, it is difficult to establish accurate mathematical mode.
It is general with the properties of inertia, nonlinearity and Strong coupling.
This three-step heating curve is satisfied with the gel require: made the undesirable impact which caused by the epoxy resin heating to lowest, made the temperature of stator bar to curing temperature slowly and hot insulation to solidify; analyzing from the point of view of auto-control, when set point is ramp function, the overshoot of system is greatly reduced, the environmental factors, coupling factors and so on will reduce the interference of the system.
In a coil production workshop of a power equipment factory in Jinan, the used material is epoxy glass which has large amount of glue, uniform thickness and good electrical and mechanical properties after curing.
That is about 177 ℃.Considering the above factors, the final options is the scheme which incubated 2.5 hours at 175 ℃.

Based on these experiments, influences on welding quality induced by those factors are analyzed.
Introduction Ultra-thin Titanium foil, characterized by low density, high specific strength, high corrosion resistance, non-magnetic properties, is an excellent structural material.
Work-pieces are welded using high energy dense micro-plasma arc which is affected by mechanical compression, thermal contraction and electro-magnetic compression.
Effects of those factors are discussed respectively as follows.
Amount of lap is an important factor affecting welding quality when welding heat input is constant.

However, there are a variety of factors that can affect the MFL inspection tool’s ability to detect and characterize anomalies.
There are also a number of factors that affect the results of MFL signals.
They include, but are not limited to defect geometry, MFL apparatus itself, magnetic properties and test parameters such as velocity.
However, MFL signals obtained from FEA models are different from experimental signals, which is attributed to different magnetic properties.
The contributing factors and importance on MFL signals for different defects are also shown from the results of experiments.

The main factors influencing the slective laser sintering parts precision: a)The effects of SLS system process equipment precision b)The influence of sintering temperature on the accuracy of the specimens c)The effect of laser scanning line of specimen d)Sintering thickness on the accuracy of specimen e)The effect of sintering material physical and chemical properties of specimens f)The buckling deformation in the process of sintering To solve the above factors that affect the precision of parts, the traditional control technology has not meet the requirements.
This paper using selective laser sintering method to make casting or cores, the application of fuzzy control in the artificial intelligence technology and processing factors affecting the BP neural network technology.
Existing heating, control scheme and the current instrument control effect are not ideal [3-4] : effects of powder temperature factor is more and more complex, with hysteresis control object.
References [1] Zhang Nixu ,Wenshang, Wang Wenwen.Coal mine machinery30(2009),p.3-6,(In Chinese) [2] Liu Weijun, rapid prototyping technology and its application: Mechanical industry press,2004,p.142-145.
(In Chinese) [5] Wang Peng ,Wang Xiangwei, Zheng Dayu, Mechanical engineer,8(2008),p39-40.

The properties of the components in these combinations were listed in Table 1 [12].
Combinations of components used in this study and their properties [16].
Bourgeault, Morse-type tapers: factors that may influence taper strength during total hip arthroplasty.
Freese Mechanical and Physical Properties of Titanium-12Molybdenum-6Zirconium-2Iron Beta Titanium Alloy journal of ASTM international, 2005. 2(8)
Freese., Mechanical and Physical Properties of Titanium-12Molybdenum-6Zirconium-2Iron Beta Titanium Alloy.

Proposed ranging influence research of the laser ranging LMS200 which is used in the robot navigation under the dissimilar condition, through analyzing primary factor that affect LMS200 ranging in the room and outside, and makes the experimental contrast, obtains experimental effect under environmental influencing factor, discovers reflectivity, incidence, mixed pixel and visibility and so on environmental factor which effect on practical application truly, builds the foundation for carrying on ranging application of the robot navigation.
Indoor factor considers measuring target surface properties mainly, to reduce the adverse effect which uneven intensity of reflected light brings, after LMS200 uses the binary method to dispose intensity of reflected light, although it is insensitive to the ambient light, but still received the big influence from the obstacle material and the superficial index of reflection.
Through analysis, environmental influence is mainly the target material surface properties and roughness[3,4], makes concrete from grey level, color, evenness aspects and so on considered.
Mechanical industry publisher.(1996)
Research on reflection and diffusion properties of complex background spectral radiance.

Mechanical properties of the welded joints made from different kinds of binder have been determined.
A contact of those materials with air or other corrosive factors causes deterioration of their strength properties and as a result material degradation.
Each type of welding process results in a decrease (approx. 30¸60%) in mechanical properties of welded material.
In the process of welding, the mechanical properties of those alloys in the heat-affected-zone (HAZ) are reduced to the level of the soft material.
This insulating layer of oxide must have the appropriate mechanical and physical properties.

Mechanical and Tribological Properties of the Composition “Steel - nanostructured Surface Layer of a Material with Shape Memory Effect Based TiNiCu” Zh.M.
Special tribological properties are possessed by the most well-known and wellregarded nikelid titanium, based on the intermetallic compound TiNi, which has damping properties, the ability to provide high resistance to friction sliding bearings and corrosion-erosion effects [3].
Analysis of the results of studies on the influence of operational factors on the wear resistance and fatigue characteristics of TiNi is given in [4].
Based on comprehensive research metallophysical defined mechanical properties of the surface layer TiNi (microhardness ranges Hμ = 8,2÷11,8 GPa, TiNiCu-layer within Hμ=10÷13 GPa), phase composition, which determines the functional properties (Fig. 2b) transformation temperature (TiNi: Мf=285K, Мs=359K, Аs=361K, Аf=375K; TiNiCu: Мf=298K, Мs=308K, Аs=324K, Аf=338K).
Investigation of tribological properties of NiTi.

And this method analysed the change in temperature field of mechanical seal ring and the distribution of temperature and pressure in the flow field when mechanical seal was working.
(5) The medium temperature is constant, the thermophysical properties of the material of the sealing ring is constant. 1.3 Calculation equation: FLUENT software could set the boundary conditions of the four temperature situation, i.e. the heat flow, the boundary temperature, convection, and radiation of these types of boundary.
And the calculation model, boundary conditions, materials, physical properties, operating conditions were set separately afterwards.
Therefore, the convective heat transfer coefficient between the sealing ring and the fluid is also one of the main factors to affect the temperature field.
Finite element calculation of the temperature field of the mechanical seal.

Analysis of Experiments of Cutting Force and Improvement of Surface Properties for Al2O3 Ceramics Inserts by Ion Implantation Wang Minghong a, He Fajiang b College of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China agliu222@126.com, bmikehfj@163.com Key words: Al2O3 Ceramics Inserts, Ion Implantation, Cutting Force, Modification of Surface Properties.
The problem which people are following with interest all the time is how to improve the cutting properties and natural life of cutter.
An effective, simple and convenient method for changing the surface properties of inserts is obtained.
With further researches and higher quality of ceramics inserts in the world, they have become modern ceramics inserts materials with well physical, mechanical behaviors and cutting properties [2].
Conclusions Experimental researches are taken to improvement of surface properties of cutter material for Al2O3 ceramics inserts by N+ ion implantation.