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Online since: February 2022
Authors: Wen Xun Jiang, Wen Wang
The results show that the liquid zinc has a strong corrosive effect on the material of sink roll bearing and shaft sleeve; The high temperature environment has a great influence on the properties of the material of the sink roll bearing pair.
In addition, zinc slag will be produced in the zinc bath, which not only affects the quality of zinc plating on the surface of strip steel, but also enters into the contact surface between bearing and shaft sleeve, forming abrasive wear and aggravating the failure of bearing materials [1].
Alloy A and alloy B are less affected by temperature than 316L stainless steel at high temperature (480 ℃).There is no direct correlation between friction coefficient and wear amount.
Analysis on dominant influencing factors of on-line life cycle in sink roll system and effective improved methods, 2015, J.
Symp on Zinc-CoatedSteel, Iron & Steel Society 44th Mechanical Working and Steel Pro-cessing, and 8th International Steel Rolling Conf, Orlando, FL, Sept.8–11, 2002, The Iron and Steel Society, Warrendale, PA, vol.
In addition, zinc slag will be produced in the zinc bath, which not only affects the quality of zinc plating on the surface of strip steel, but also enters into the contact surface between bearing and shaft sleeve, forming abrasive wear and aggravating the failure of bearing materials [1].
Alloy A and alloy B are less affected by temperature than 316L stainless steel at high temperature (480 ℃).There is no direct correlation between friction coefficient and wear amount.
Analysis on dominant influencing factors of on-line life cycle in sink roll system and effective improved methods, 2015, J.
Symp on Zinc-CoatedSteel, Iron & Steel Society 44th Mechanical Working and Steel Pro-cessing, and 8th International Steel Rolling Conf, Orlando, FL, Sept.8–11, 2002, The Iron and Steel Society, Warrendale, PA, vol.
Online since: April 2016
Authors: Janusz T. Cieśliński, Przemysław Kozak
It is well known that heat transfer coefficient during the forced convection in the tubes, in addition to thermal conductivity, is also affected by liquid properties such as viscosity, density and specific heat, and on the other hand, the geometry of the system, i.e. the diameter and the length of the tube, and the average velocity of the fluid.
So far obtained experience with nanofluids indicate that there are other factors than those already mentioned, the affect heat transfer coefficient during the flow in the tubes like: concentration of the nanoparticles, their size (distribution) and the material from which they are made, the method of preparation of nanoparticles and nanofluids, pH and zeta potential of nanofluids as well as the method of heating of the measuring section (electric heating can affect the migration of nanoparticles are likely to carry electrical charge).
Nanofluids were prepared by use of a two-step method with using of ultrasonic bath and mechanical mixer.
So far obtained experience with nanofluids indicate that there are other factors than those already mentioned, the affect heat transfer coefficient during the flow in the tubes like: concentration of the nanoparticles, their size (distribution) and the material from which they are made, the method of preparation of nanoparticles and nanofluids, pH and zeta potential of nanofluids as well as the method of heating of the measuring section (electric heating can affect the migration of nanoparticles are likely to carry electrical charge).
Nanofluids were prepared by use of a two-step method with using of ultrasonic bath and mechanical mixer.
The Effects of Biodegradation on the Cytocompatibility of Bioresorbable Fe-Based Scaffolds: A Review
Online since: July 2019
Authors: Daphne Anne Pollacco, Malcolm Caligari Conti
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.
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.
Online since: September 2014
Authors: Oded Rabinovitch, Dvir Elmalich
The mechanical properties of the various components are given in Fig. 1c.
(a) Elastic Properties ,, nwall=0.2, ,, n12FRP=0.3 Eadh=0.8 GPa, Gadh=0.307 GPa.
(b) Fig. 1 A strengthened but delaminated wall segment under in-plane shear: (a) geometry and cross sections (adapted from [5]); (b) Elastic properties.
Particularly, it affects the vibratory component of this response.
This multi-layered scheme would allow utilizing the improved properties of the tensed diagonal while providing some support to the compressed one and postponing its premature out-of-plane buckling.
(a) Elastic Properties ,, nwall=0.2, ,, n12FRP=0.3 Eadh=0.8 GPa, Gadh=0.307 GPa.
(b) Fig. 1 A strengthened but delaminated wall segment under in-plane shear: (a) geometry and cross sections (adapted from [5]); (b) Elastic properties.
Particularly, it affects the vibratory component of this response.
This multi-layered scheme would allow utilizing the improved properties of the tensed diagonal while providing some support to the compressed one and postponing its premature out-of-plane buckling.
Online since: January 2016
Authors: Sergey V. Dmitriev, Julia A. Baimova
Introduction
Bulk nanocrystalline metallic materials have attracted considerable attention of researchers because of their unique mechanical properties as compared with coarse grained conventional materials.
Thus, the investigation of various loading conditions for better grain refinement and property control is of high importance.
Despite this interatomic potential cannot reproduce the properties of any particular material it was successfully used for the investigation of fcc polycrystals.
In spite of the fact, that in the real experiments such a high temperature will leads to the considerable grain growth, in atomistic simulation these two factors will be compensated and allow to produce qualitatively adequate results.
Hassani, Influence of twist extrusion process on microstructure and mechanical properties of 6063 aluminum alloy, Mater.
Thus, the investigation of various loading conditions for better grain refinement and property control is of high importance.
Despite this interatomic potential cannot reproduce the properties of any particular material it was successfully used for the investigation of fcc polycrystals.
In spite of the fact, that in the real experiments such a high temperature will leads to the considerable grain growth, in atomistic simulation these two factors will be compensated and allow to produce qualitatively adequate results.
Hassani, Influence of twist extrusion process on microstructure and mechanical properties of 6063 aluminum alloy, Mater.
Online since: March 2008
Authors: Zhen Jia Li, Yao Nan Cheng, Yong Gang Zhao, Wei Jun Sun
The stress field relating with milling force affects the
impact disrepair directly.
In order to judge the stress field, many factors must be taken into account, and some of them are difficult to be quantificational, so it is blurry.
Therefore the judgement of milling insert stress field must take into account many factors, and have the blurry synthetical judgement.
The Impact Disrepair Life Cumulating Distribution Function Mathematic Model Weibull Function Property Analysis.
Tao: Chinese Journal of Mechanical Engineering, Vol.36 (2000), pp. 42-45.
In order to judge the stress field, many factors must be taken into account, and some of them are difficult to be quantificational, so it is blurry.
Therefore the judgement of milling insert stress field must take into account many factors, and have the blurry synthetical judgement.
The Impact Disrepair Life Cumulating Distribution Function Mathematic Model Weibull Function Property Analysis.
Tao: Chinese Journal of Mechanical Engineering, Vol.36 (2000), pp. 42-45.
Online since: July 2020
Authors: Poppy Puspitasari, Retno Wulandari, Sukarni Sukarni, Aloon Eko Widiono, Ardianto Prasetiyo
As a semiconductor type metal oxide group, TiO2 has strong and stable catalytic properties.
Equation (1) becomes: dαdt = Aβ еxp -EαRT(1-α)n (3) where T is the Kelvin temperature, R is the gas constant (0.008314 kJ/mol K), Ea is the activation energy (kJ/mol), and A is the pre-exponential factor (min-1).
Changes in Ea and A revealed that the addition of metal oxide (TiO2) affected the arrangement of the bonds in the chemical structure of microalgae [10, 16].
Oda, Bioflocculation of the oceanic microalga Dunaliella salina by the bloom- forming dinoflagellate Heterocapsa circularisquama , and its effect on biodiesel properties of the biomass, Bioresour.
Ma, Study on catalytic properties of potassium carbonate during the process of sawdust pyrolysis, Int.
Equation (1) becomes: dαdt = Aβ еxp -EαRT(1-α)n (3) where T is the Kelvin temperature, R is the gas constant (0.008314 kJ/mol K), Ea is the activation energy (kJ/mol), and A is the pre-exponential factor (min-1).
Changes in Ea and A revealed that the addition of metal oxide (TiO2) affected the arrangement of the bonds in the chemical structure of microalgae [10, 16].
Oda, Bioflocculation of the oceanic microalga Dunaliella salina by the bloom- forming dinoflagellate Heterocapsa circularisquama , and its effect on biodiesel properties of the biomass, Bioresour.
Ma, Study on catalytic properties of potassium carbonate during the process of sawdust pyrolysis, Int.
Online since: May 2020
Authors: Wen Hong Liu, An Qing Fu, Qiu Rong Ma, Nai Xin Lyu, Wen Sheng Li
Generally, the design of tubing string should consider mechanical properties and sealing.
Harsh service environment often leads to premature damage of gas well, such as tubing junction failed, which seriously affects the safety of completion operation of the well.
Flow with high velocity can promote the renewal of corrosion medium, affect the formation of corrosion product film, accelerate the migration of the corrosion products and eventually accelerate corrosion [7,8].
Other factors, such as the effect of corrosion product film to the corrosion process, are not taken into account in the calculation of corrosion rate.
A simplified calculation model of gas-liquid scouring corrosion rate at threaded connections in high productivity gas wells has been established. 2) The phase distribution and flow characteristics in the groove structure of tubing threaded connection are significantly affected by the main flow velocity.
Harsh service environment often leads to premature damage of gas well, such as tubing junction failed, which seriously affects the safety of completion operation of the well.
Flow with high velocity can promote the renewal of corrosion medium, affect the formation of corrosion product film, accelerate the migration of the corrosion products and eventually accelerate corrosion [7,8].
Other factors, such as the effect of corrosion product film to the corrosion process, are not taken into account in the calculation of corrosion rate.
A simplified calculation model of gas-liquid scouring corrosion rate at threaded connections in high productivity gas wells has been established. 2) The phase distribution and flow characteristics in the groove structure of tubing threaded connection are significantly affected by the main flow velocity.
Online since: July 2003
Authors: W.Y. Zhou, P. Lin, Yu Fang Fu, R.H.C. Wong, Chun An Tang
It is found from these studies, that the strength, the orientation of the macroscopic failure plane,
the dilatancy, and other mechanical features are greatly affected by the confining pressure, friction
between surface of the pre-existing flaws and the flaw geometry.
The experimenatl specimens were made by modelling material with physical properties like sandstone.
The confinement and perpendicular distance between flaws are important factors affecting on the failure patterns for specimens containing pre-existing flaws with different size or geometry distribution.
The experimenatl specimens were made by modelling material with physical properties like sandstone.
The confinement and perpendicular distance between flaws are important factors affecting on the failure patterns for specimens containing pre-existing flaws with different size or geometry distribution.
Online since: August 2017
Authors: Alena Vagaská, Miroslav Gombár, Katarina Monkova, Jan Řehoř, Jaroslava Fulemová
The most of experts are consistent with the fact that the machined material and its properties have to be always added into the impartial definition.
The understanding all of the factors such as chip formation, actions that go along with the process, force and power (thermal) load and other, enables to take advantage of HSC machining. [3,4,5] Conditions of Experiments To be the milling cutter more effective at high speed milling technology, it is important to know the force ratios from the view of different types of contact.
Higher feed has a negative effect on the component FN, which significantly affects the component FCN.
Conversely that of component FC that shows the smallest load at low feed, but higher feed negatively affects the force at lower vC.
[8] Petru, J. et al.: Influence of cutting parameters on heat-affected zone after laser cutting.
The understanding all of the factors such as chip formation, actions that go along with the process, force and power (thermal) load and other, enables to take advantage of HSC machining. [3,4,5] Conditions of Experiments To be the milling cutter more effective at high speed milling technology, it is important to know the force ratios from the view of different types of contact.
Higher feed has a negative effect on the component FN, which significantly affects the component FCN.
Conversely that of component FC that shows the smallest load at low feed, but higher feed negatively affects the force at lower vC.
[8] Petru, J. et al.: Influence of cutting parameters on heat-affected zone after laser cutting.