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Study on the design of a preload adjustable ultrasonic vibration extrusion system HU SJ1, a, CHEN YR1, b, HOU JB1, SHU Q2 1School of Electrical and Mechanical Engineering, Lanzhou University of Technology, Lanzhou 730050,CHINA 2School of Foreign Language, Lanzhou University of Technology, Lanzhou 730050,CHINA a731501029@qq.com, b872452076@qq.com Key words: Vibration, Ultrasonic, Extrusion processing, Impedance characteristic Abstract.
Finally its vibration performance was verified by impedance characteristic test and conformed to the processing requirement. 1 Introduction With the rapid development of mechanical processing industry, more and more attention is paid to the quality of parts by every walk of life.
Figure of vibration mode of extrusion vibrator 4 Research on impedance characteristics of ultrasonic extrusion processing vibrator The impedance characteristics of ultrasonic extrusion processing vibrator is one of its important performance parameters, the ultrasonic extrusion not only affects the sound-electricity transducing efficiency of ultrasonic extrusion processing and the stability of its working, but also indirectly reflects whether the assembly of the ultrasonic vibrator is successful.
The result shows that the resonance frequency of the vibrator which is matched with system is 26.7 kHz, the motional impedance is 42.1Ω, mechanical quality factor is 387.1, these parameters could basically satisfy the performance index of ultrasonic extrusion processing system and then achieve the goal of the design.
Admittance circular curve. 5 Conclusions Ultrasonic vibration extrusion processing system will be widely used because it has good processing properties, it is suitable for small and medium-sized lathes and easy to handle.

Oladejo3,c 1,2,3Department of Mechanical Engineering, Obafemi Awolowo University, Ile-Ife, Nigeria.
These factors have combined to propel the need for prompt investigations into the use of non-petroleum based fluids as cutting fluid.
They are cultivated and refined for specific performance properties and technical requirements.
Nair, Coconut oil as base oil for industrial lubricants – evaluation and modification of thermal, oxidative and low temperature properties.
Mahuttanyavanitch, Physical and mechanical properties of Jatropha curcas L. fruits, nuts and kernels.

Surface Electrical Property.
Fly ash particles with good dispersing properties and high mechanical strength distributed evenly in the sludge floc structure, providing a loose porous skeleton of support for sludge and improving compression resistance of sludge.
Ceramsite obtained from water and wastewater sludge and its characteristics affected by (Fe2O3+CaO+MgO)/(SiO2+Al2O3), J.
Ceramsite obtained from water and wastewater sludge and its characteristics affected by Fe2O3, CaO, and MgO, J.
Thickening properties and utilization of sewage sludge modified by shale[J].

Presently, the study on tensile properties of rocks is mainly using the experimental methods of indirect tension and direct tension.
The direct tension is regarded as the best way to study tensile properties of rocks [8], so in the light of this thought, related study was carried on by some scholars.
Then, the experiment will have to be ended and the study on tensile properties of rocks in post-peak area can not be done further.
l Spring used for a long time will be out of shape and shrinking, affecting its performance.
Using two magnets has the merits of low cost, long service life, small mechanical loss and easy installation.

The focus of the investigations was on the influence of the thermal(1) or the acidic(2) activation on the structure and properties of the materials.
Is it possible to generate materials with exploitable binder properties?
To optimize the materials properties, the addition of fine grains of metallic iron and different mineral powders to the fresh mixtures was tested.
Influence of additions on setting behaviour and materials properties.
Van Denventer: Geopolymers, Structure Processing, Properties and Industrial Applications, CRD Press, Woodhead Publ., Oxford, 2009, p. 3 [2] H.

In order to increase the performance and thereby the effectiveness of different thermoelectric modules, especially advantageous thermoelectric properties of materials and also innovative design of thermoelectric devices are now solved.
Semiconductor alloys generally have good thermoelectric properties, i.e. relatively low electrical resistivity and also a low thermal conductivity, but their material efficiency is practically reduced due to an important structural element, namely a copper bridge connecting the semiconductor columns.
Although copper has a relatively high electrical conductivity and permits good soldering, the point is that after a relatively prolonged use, copper particles diffuse from the pure copper connecting bridge to the material of the columns and so degrade the initially excellent thermoelectric properties.
Summary For the demonstrated measurements, it is possible to predict specifically such optimum operational load for every thermal battery, with respect to its material and geometric properties, to be able to provide maximum performance, in particular linearly dependent on the temperature difference occurred between its walls.
One thing, however, is the heat allowed by theory (according to anticipated resistances and material properties of ternary alloys, the heating of the warmer wall up to 200 oC may be permitted), the second thing consists in the design of the thermal battery which is not able to withstand such long-term thermal load.

The structure properties are effected by the morphology of the scaffold and also by the inherent material properties [4].
This is then combined with the properties imparted to the scaffold due to any coatings present on its surface [5].
Mechanical changes of the microstructure.
Baró, et al., "Mechanical properties, corrosion performance and cell viability studies on newly developed porous Fe-Mn-Si-Pd alloys," Journal of Alloys and Compounds, vol. 724, pp. 1046-1056, 2017
Alhussein, "Effect of annealing treatment on the microstructure, mechanical and tribological properties of chromium carbonitride coatings," Surface and Coatings Technology, vol. 359, pp. 403-413, 2019/02/15/ 2019.

Introduction The measurement of deformation fault probabilities is important to understand the mechanical properties of bulk nanograined materials as well as the structure of synthesized nanoparticles.
Here a simulation approach was employed as the level of precision and control allows for a systematic study of the many factors influencing the pattern.
Also the same atomic structure factor and polarization factor were applied to the small-angle pattern to be consistent with the Debye Function calculation.
The use of this scale parameter as well as the necessary polarization and atomic scattering factors, allows for a direct match of the PM2K modeled pattern and the Debye pattern without the use of a background function.
The variable scale factor was always found to be 1.0, which is a further verification of the normalization and analytical scale factor used.

Thanks to its excellent mechanical characteristics, Titanium rises above the others lightweight alloys [8, 9].
To well assess such an assumption, different aspects should be considered, i.e. the thermal properties of the material, the process temperature range, the microstructural evolutions.
A HSS steel punch with a diameter of 12 mm was used in order to ensure a good mechanical resistance at high temperature.
In practice, the heated surface increases by a factor 100, the specific power reduces by a factor 10.
Considerations based only on the energy consumption may lead to quick solutions that can affect the product performance in use.

This shows that the MZnONR1 sample exhibits the best electrochemical performance, which is supported by its morphological properties.
Different nanostructure has different physical properties.
The increasing Zn affects the better porosity.
This shows that the MZnONR1 sample has the best electrochemical performance supported by its morphological properties.
Eng. 202 [24] Sawitri R A, Suryanti L, Zuhri F U and Diantoro M 2019 Dielectric Properties of Dirt Sugarcane Sediment (DSS) Extract-BaTiO3 for Organic Supercapacitors IOP Conf.