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Experiment on mechanical properties A model relating the depth of penetration to the levels of one or more welding factors is an indispensable aid in the interpretation of results from an experimental design.
The result of experiment on mechanical properties of the welding line is shown in the Table 3.
The result ofexperiment on mechanical properties of the welding line Tensile Hardness (N/mm2) Receive impact at temperature of 0°C (Jul) Average hardness value (HV) 542.61 66 156.4 4.
[2] Moeinifar, S., Kokabi, A.H., Madaah Hosseini, H.R., Role of tandem submerged arc welding thermal cycles on properties of the heat affected zone in X80 micro alloyed pipe line steel.
Simulator thermal cycles on properties of the intercritically reheated heat affected zone.

Thus, the quality requirements as well as mechanical properties of seamless pipes are increasing and becoming more stringent.
It is known that the durability of mandrels depends on their wear resistance during operation, which is one of the most crucial factors affecting the quality of manufactured pipes.
According to [12,13], it is suggested that one of the main factors affecting the service life of mandrels during billets piercing are the billets carbon equivalent and duration of processing.
The results prove that alloying elements addition and content in rolled products shall be deemed as significant factors which essentially affect working tools wear.
Comparison of metal forces affecting the mandrel shows that alloyed chromium and nickel in rolled billets significantly affect the working tools and shall be generally considered as one of the most important factors of the mandrel wear.

Periodic high-frequency serrated ship will cause fluctuations in the cutting force, which then affect the tool wear and surface integrity of workpiece and so on.
Davies and others[2][3]through experimental research, established the theoretical model of the serrated frequency and cutting speed, and proposed that the material hardness and cutting speed are the two main factors of chip morphology.
The workpiece used in this study was a Ti6Al4V bar with a diameter of 100m whose Chemical composition and mechanical properties are shown in Table 1 and Table 2.
Table 1 Chemical composition of Ti6Al4V(w%)[4] composition Al V Fe Si C O N H Others T i Wt% 5.5~6.8 3.5~4.5 0.3 0.15 0.1 0.2 0.05 0.015 0.5 remaining Table 2 Mechanical properties of Ti6Al4V Mould of elastic (E) Tensile strength σb Yield strength σs Poisson's ratio Elongation 119GPa 930MPa 855MPa 0.29 12% The chip is inlayed in a pointing machine.
A single factor experiment is completed with fixed ap and f, and variable vc.

Tensile Properties.
It demonstrated that the mechanical properties of the nanocomposites were effectively improved by incorporating MWCNTs.
It is believed that the mechanical properities of the HDPE/MWCNTs nanocomposites is affected by many factors, such as Shish-kebab structure, interfacial adhension between MWCNTs and HDPE, dispersion of MWCNTs, HDPE lamellar thickness and crystallinity, orientation of the polymer chains, orientation of MWCNTs, and crystalline phase of polymer matrix, etc..
The results showed that the mechanical properties of the HDPE/MWCNTs nanocomposites were effectively improved by incorporating MWCNTs.
Therefore, the formation of Shish-kebab structure can cause excellent mechanical properties.

The orthogonal tests consisting of three factors of melting lead temperature, continuous casting speed and inflation pressure at three different levels were designed to obtain arrangements of optimal process parameters that affected surface quality of bimetal casting rods in principle.
Introduction Clad materials have been developed very rapidly because of different demands of superior mechanical and thermal properties [1-4].
Orthogonal tests of three factors, three levels were designed to prepare lead clad tin composite rod of external diameter Φ12mm and inner diameter Φ8mm.
To explore the effect of technological parameters on the rod surface quality, the lead clad tin orthogonal tests in three factors and three levels were designed, three factors were melting lead temperature, air pressure and casting speed, three levels were set in each factor to quantify effect of test parameters on casting rod.
Tab. 1 Value of composite rod surface quality tested by orthogonal experiment Factor Test number Melting lead temperature / inflation pressure / Mpa Continuous casting speed / mm/min Score of surface quality 1 355 0.02 10 7 2 355 0.03 20 5 3 355 0.04 30 2 4 365 0.02 20 6 5 365 0.03 30 4 6 365 0.04 10 8 7 375 0.02 30 4 8 375 0.03 10 9 9 375 0.04 20 6 Score extreme difference of surface quality 1.33 0.67 4.67 It can be seen from the size of extreme difference that the main impact-factor of surface quality is continuous casting speed, followed by melting lead temperature, and the least is inflation pressure.

By eliminating the above factors, an abnormal three-stage trend of viscosity changes is observed finally.
Viscosity in both the high-temperature and supercooled liquid regions is one of the most important dynamic properties.
The thermodynamics and dynamics of the liquids are the keys to understanding the properties.
Zhang, Formation, thermal stability and mechanical properties of Cu-Zr-Al bulk glassy alloys, Mater.
Inoue, High glass-forming ability and good mechanical properties of new bulk glassy alloys in Cu–Zr–Ag ternary system, J.

This discussion focuses on input controls and testing the outputs of the process from both the perspective of interstitial content and mechanical properties.
Final property consistency (i.e. lot-to-lot chemical and mechanical properties) is critical for adherence to ASTM / AMS requirements.
Property ASTM F2885-11 Requirement Capability (Ppk) Nitrogen <0.05 5.17 Carbon <0.08 2.38 Hydrogen <0.015 2.03 Iron <0.30 2.73 Oxygen <0.20 1.40 Aluminum 5.5 - 6.75 1.87, 3.08 Vanadium 3.5 – 4.5 6.25, 6.83 Yttrium <0.005 below detection limits Titanium Balance Not required Mechanical Properties The most critical output of titanium MIM is meeting the mechanical property requirements of the medical and aerospace specifications.
Below in Table 6 are the results of long term capability of mechanical property.
Titanium powder injection moulding: A review of the current status of materials, processing, properties and applications.

Furthermore, their closed-cell geometry is attractive for energy absorption and insulating properties [2,6].
The presence of voids in any material has a significant influence on its physical and mechanical properties.
As to matrix porosity, it is generally undesirable, due to its degrading effect on the composite properties [5].
The balance between these phenomena determines the effect in terms of particle distribution, overall microstructure and FGM properties [10-11].
There are several factors affecting porosity such as pouring rates too slow, low casting temperatures, and filling mould problems among others.

It is a critical factor which affects the input of machine vision.
Because it affects the quality of input data and application affect at least 30%.
To design a good performance light system, there are four factors to be considered which is as follows: (1) The field of vision for camera This is dependent on the scope of the detecting object.
LED source has good characteristics in many factors
Journal of Mechanical Engineering.

Internationally, the research on new permeable pavement materials has led Lu G[7] and others to use recycled ceramic aggregates and bio-based polyurethane adhesives instead of natural aggregates and asphalts to obtain good mechanical properties, functional properties and environmental properties.
The study pointed out that the most critical factor affecting ceramic permeable bricks is the crystal phase type and state, and the ceramic aggregate should not penetrate too much during preparation, otherwise the permeability coefficient will increase but the compressive strength will decrease.
A large number of studies have shown that the mechanical properties of permeable bricks are inversely proportional to the water permeability, so the core factors and test methods that affect the relationship between the two are all permeable.
Separation factor method Separate the mechanical properties of the permeable bricks from the water permeability, find the corresponding optimal conditions, and then comprehensively analyze the various factors to finally obtain the optimal solution.
Preparation and properties of red mud permeable bricks [J].